Related Manuals for Condair GS C Series
Summary of Contents for Condair GS C Series
- Page 1 InstallatIon, commIssIonIng and servIce InstructIons...
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Page 3: Table Of Contents
Contents Introduction 1.1 At the very beginning 1.2 Notes on the installation, commissioning and service instructions For your safety Product Overview .1 Product versions/Model designations .2 Delivery . Humidification system overview .4 Construction of the gasfired steam humidifier .5 Principle of operation Basic planning 4.1 Selecting the unit 4.2 Selecting the control system 4. Options 4.4 Accessories Mounting and installation works 5.1 Important notes on mounting and installation works 5.2 Unit fitting 5. Steam installation 5.4 Water installation 5.5 Gas installation 5.6 Flue gas installation 5.7 Installation of the air inlet line for room air-independent units (RS units) 5.8... -
Page 4: Introduction
Introduction 1.1 At the very beginning Thank you for deciding on the Condair GS C series Gasfired Steam Humidifier (abbreviated as “Condair GS”). The Condair GS incorporates the latest technical advances and satisfies the requirements of the European Gas Equipment Directive (90/396/EEC) and all known safety standards. Nevertheless, improper use may result in danger to the user or third parties and/or impairment of the installation or other material assets. To ensure a safe, proper, and economical operation of the Condair GS, please observe and comply with all information and safety instructions contained in the present installation, commissioning and service instructions as well as the instructions given in the manuals for the components used in the humidification system. If you have questions, which are not or insufficiently answered in this documentation, please contact your Condair supplier. They will be glad to assist you. 1.2 Notes on the installation, commissioning and service instructions Limitation The subject of these installation, commissioning and service instructions is the Condair GS C series Gasfired Steam Humidifier in its different versions. The various accessories are only described insofar as this is necessary for proper operation of the equipment. Further information on accessories can be obtained in the respective instructions. These installation, commissioning and service instructions is restricted to the planning, installation, commissioning, operation, servicing and trouble shooting of the gasfired steam humidifier Con- dair GS and is meant for well trained personnel being sufficiently qualified for their respective work. These installation, commissioning and service instructions are supplemented by various separate items of documentation (operating instructions for Condair GS/GS...OC - C series control, spare parts list, etc.). Where necessary, appropriate cross-references are made to these publications in the installation, commissioning and service instructions. - Page 5 Symbols used in this documentation CAUTION! The catchword “CAUTION” designates notes in this documentation that, if neglected, may cause damage and/or malfunction of the unit or other material assets. WARNING! The catchword “WARNING” used in conjunction with the general caution symbol designates safety and danger notes in this this documentation that, if neglected, may cause to injury to persons. DANGER! The catchword “DANGER” used in conjunction with the general caution symbol designates safety and danger notes in this this documentation that, if neglected, may lead to severe injury or even death of persons. Safekeeping Please safeguard these installation, commissioning and service instructions in a safe place, where they can be immediately accessed. If the equipment changes hands, the installation, commissioning and service instructions should be passed on to the new operator. If the installation, commissioning and service instructions get mislaid, please contact your Condair supplier. Language versions These installation, commissioning and service instructions are available in various languages. Please contact your Condair supplier for information. Copyright protection The present installation, commissioning and service instructions are protected under the Copyright Act. Passing-on and reproduction of the installation, commissioning and service instructions (or part thereof) as well as exploitation and communication of the contents are prohibited without writ- ten permission by the manufacturer. Violation of copyright terms is subject to legal prosecution and arises liability for indemnification. The manufacturer reserves the right to fully exploit commercial patent rights.
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Page 6: For Your Safety
For your safety General Every person working with the Condair GS must have read and understood the installation, commis- sioning and service instructions before carrying out any work. Knowing and understanding the contents of the installation, commissioning and service instructions is a basic requirement for protecting the personnel against any kind of danger, to prevent faulty op- eration, and to operate the unit safely and correctly. If the information in these installation, commissioning and service instructions is not fol- lowed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. All ideograms, signs and markings applied to the unit must be observed and kept in readable state. Qualification of personnel All actions described in the present Installation, commissioning and service instructions (commis- sioning, operation, maintenance, etc.) must be carried out only by well trained and sufficiently... - Page 7 What to do if you smell gas: do not try to light any appliance. Do not touch any electrical switch; do not use any telephone in your building. Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions. If you can not reach your gas supplier, call the fire department. DANGER! Danger of burning The water tank, the steam line and the exhaust system get very hot during operation. There is danger of burning when touching these components during or shortly after opera- tion. Prevention: Do not touch the water tank, the steam line and the exhaust system during operation. Before carrying out any work set the Condair GS out of operation as described in chapter 6. , then wait until the components has cooled down sufficiently thus preventing danger of burnin. Behaviour in case of danger If it is suspected that safe operation is no longer possible, then the Condair GS should immediately be shut down and secured against accidental power-up according to chapter 6.3. This can be the case under the following circumstances: – if you smell gas – if the Condair GS or its mains cable is damaged – if the Condair GS is no longer operating correctly – if connections and/or piping are not sealed – if components of the Condair GS humidifier are worn or badly soiled. – if the Condair GS or any components has been exposed to excess humidity. – after longtime storage under unfavorable conditions. – after transportation under unfavorable conditions. All persons working with the Condair GS must report any alterations to the unit that may affect safety to the owner without delay. Prohibited modifications to the unit No modifications must be undertaken on the Condair GS without the express written consent of the manufacturer. For the replacement of defective components use exclusively original accessories and spare parts available from your Condair supplier.
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Page 8: Product Overview
Natural gas L, ELL: Natural gas HS: G25.1 Natural gas Lw: Natural gas Ls: GZ350 Propane gas P: Room air-independent unit (with separate air intake) The humidifiers are equipped with an operating and display unit, as standard, by means of which the current operating parameters can be interrogated and the equipment can be configured for op- eration. The humidifiers are controlled via the internal PID controller or an external continuous controller. 3.2 Delivery The standard delivery includes: – Gasfired steam humidifier Condair GS compl. with unit stand (according to the model designa- tion) – Installation, commissioning and service instructions Condair GS C series – Operating instructions Condair GS control – Spare parts list – Accessories ordered according to chapter 4.4 (steam distribution pipes, steam hoses, etc.). -
Page 9: Humidification System Overview
3.3 Humidification system overview 1 Gasfired steam humidifier 1 Auxiliary drain connection 2 Electrical connections 14 Shut-off valve auxiliary drain (building side) Gas supply connection 15 Flue gas pipe 4 Shut-off valve gas supply line (building side) 16 Flue gas adapter with condensate drain 5 Gas supply line (building side) (accessory “FA...”) 6 Sediment trap (building side) 17 Air intake pipe (RS-units only) 7 Fill water connection 18 Main steam pipe (building side) 8 Filter valve (accessory “Z261”) 19 Steam hose adapter (accessory “SA...”) 9 Water supply line (building side) 20 Steam hose (accessory “DS80”) 10 Drain water connection 21 Steam distribution pipe (accessory “81–...”) 11 Drain water line 22 Condensate hose (accessory “KS10”) 12 Funnel with trap... -
Page 10: Construction Of The Gasfired Steam Humidifier
3.4 Construction of the gasfired steam humidifier 14 Ignition modules 1 Water tank 15 Burner electronic 2 Steam outlet(s) (1 to 6) 16 Combustion air blower (1 to 6) Heat exchanger (1 to ) 17 Flame sensor 4 Burner (1 to 6) 18 Igniter 5 Level unit 19 Drain pump 6 Key pad and display unit 20 Air pressure switch 7 Indication LED’s 21 Gas pressure control valve (1 to 6) green: “Steam production” 22 Auxiliary drain line yellow: “Maintenance” 2 Drain connection red: “Error” 24 Double inlet valve filling water 8 Drain key (manual draining) 25 Connection filling water 9 Unit switch... -
Page 11: Principle Of Operation
3.5 Principle of operation Combustion System The combustion system is based on a fully modulating forced draft combustion air blower, a negative pressure regulator gas valve and a 100% premix burner. On a call for humidity, the combustion air blower starts and creates a negative pressure across an orifice located at the air inlet. The blower starts for a moment to purge the system, then the hot surface ignitor is activated for 15 seconds. During this time the electronic ignition module does a diagnostic check of safety systems including the air proving switch which senses the negative pressure at the air inlet. After the function of the safety systems has been verified, the gas valve will open and the gas/air mixture is ignited by the hot surface ignitor. If flame is sensed by the flame sensor within seconds the gas valve remains open and combustion continues. If flame is not sensed, the above sequence is repeated a maximum of three times after which the ignition module will lock out and a respective error message will appear in the display. The gas valve maintains a constant ratio of air to Natural Gas or Propane independent of blower speed or external conditions. This air and fuel is thoroughly mixed in the blower and then forced through the burner ports where ignition occurs. Hot products of combustion are forced through a baffle inside the heat exchanger and then vented outside. The heat exchanger has large vertical surfaces to minimize scale build-up and promote scale shedding to the bottom of the tank. This self-cleaning action helps to maintain the efficiency of the heat exchanger while the smooth surfaces allow for easy cleaning when necessary. The GS 40 has a single combustion chamber/heat exchanger. The combustion system is duplicated on larger units with multiple chambers inside a common tank. Regulation of the water level in the tank Filling chamber Vacuum break Main fill line Pressure equalizer Double fill valve Drain outlet Level unit Drain pump Auxiliary drain Mixing pipe The level in the water tank is continuously monitored by the level unit. On initial start-up, the control unit checks the function of the level unit. During this test the tank is filled up first to level “A”, then drained to level “C” and filled up again to level “A”. As soon as level “B” is reached and the test of the level unit was successful the humidifier is ready for operation, if a humidification demand is present the combustion process starts. - Page 12 When the water level due to the evaporation process reaches level “B”, the level unit sends a signal to the control system, which opens the double inlet valve and the water tank is filled up. On reach- ing level “A”, the level unit again sends a signal to the control system and the double inlet valve is closed. If the water level goes below level “C”, the combustion will be interrupted until the water level reaches “C” again. To ensure safe operation, the control system constantly monitors the proper function of the level unit in regular intervals. Steam generation/control The steam is generated in the water tank via the heat exchanger/s. The steam production is regulated continuously by the internal PID controller or an external continuous controller. Flushing The concentration of minerals in the water in the tank increases due to the evaporation process. In order that this concentration does not exceed a specified value, an appropriate quantity of water is pumped off from the tank at a fixed time interval and replaced by fresh water. These flushing cycles are based on steam production to increase the efficiency of the humidifier. When a flushing cycle is initiated the drain pump is activated and the inlet valve opens. In the mixing pipe below the filling chamber the hot drain water is mixed with the cold cooling water and leaves the unit with a temperature approx. around 60 - 70 °C. If the lowest operating level is reached in the tank during the flushing process, the inlet valve remains open until the water level in the tank has again reached the normal operating level.
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Page 13: Basic Planning
Basic planning 4.1 Selecting the unit The selection of the unit is reflected in the type description: Condair GS 80 C G20 RS 1. Required maximum steam capacity 2. Required combustion gas 3. Combustion air supply 4.1.1 Calculating the maximum required steam capacity The maximum required steam capacity is calculated from the following formulas: V • ρ • (x2 - x1) • (x2 - x1) 1000 1000 • ε : maximum steam demand in kg/h V: volume of supply air portion per hour in m /h (for indirect room humidification) or room volume to be humidified per hour in m /h (for direct room humidification) ρ: specific gravity of air in kg/m ε: specific volume of air in m : desired absolute room air humidity in g/kg : minimum absolute supply air humidity in g/kg The values for ρ, ε, x2 and x1 can be gathered from the h,x-diagram or the Carrier-Diagram for moist air respectively. - Page 14 The total amount of losses depends on the entire system and must be taken into consideration when calculating the required steam capacity. If you have any questions regarding the calculation of the steam capacity please contact your Condair supplier. – For systems where the max. required steam capacity varies extensively (e.g. for test facilities or for systems with variable air volume flow, etc.), please contact your Condair supplier. 4.1.2 Combustion gas The Condair GS can be operated with natural gas or propane. The equipment is configured ex- works for the respective combustion gas that is to be employed. If required, the equipment can be converted at a later date to work with one of the other combustion gas.
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Page 15: Selecting The Control System
4.2 Selecting the control system The various control systems – System 1: Room humidity control System 1 is suited for air conditioning systems with mainly recirculated air. The humidity sensor is preferably located in the room itself or in the exhaust air duct. A1 humidity sensor B1 ventilation interlock B2 airflow monitor B safety humidistat external continuous controller (e.g. PI controller) internal continuous controller (PID controller) input signal from A1 – System 2: Room humidity control with continuous limitation of the supply air humidity System 2 is suited for air conditioning systems with a large portion of supply air, low supply air temperature, post-humidification, or variable airflow volume. If the supply air humidity exceeds the preset value, the continuous limitation is effected prior to the room humidity control. The humidity sensor (A1) is preferably located in the exhaust air duct or in the room itself. The humidity sensor (A2) for the limitation of the supply air humidity is located in the supply air duct after the steam distribution pipe. This control system requires the internal PID controller or an external continuous controller with the option to connect a second humidity sensor. Attention! The continuous limitation of the supply air humidity is no substitute for the safety humidistat. - Page 16 B2 airflow monitor B safety humidistat external PI-controller internal continuous controller (PID controller) input signal from A1 input signal from A2 Which humidity control system for which application? Application Location of the humidity sensor Room or exhaust air duct supply air duct Air conditioning systems with: Supply air portion up to % System 1 System 1 Supply air portion up to 66% System 1 or 2 System 2 or Supply air portion up to 100% System 2 System Supply air humidity control ––– System Please contact your Condair supplier, if your application meets the following conditions: – Humidification of small rooms up to 200 m – Air conditioning systems with a high number of air exchanges – Systems with variable air volume flow – Test facilities with extreme control accuracy requirements – Rooms with a high variation in max. steam capacity – Systems with temperature fluctuations – Cold rooms and systems with dehumidification...
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Page 17: Options
Control/input signals The Condair GS is regulated via the internal PID controller or an external continuous controller (e.g. PI controller). Important! For the control systems 2 and the external controller must be equipped with two control signal inputs. The Condair GS processes the following control signals: – 0 ... 10 VDC – 2 ... 10 VDC – 0 ... 10 mADC – 2 ... 10 mADC – 0 ... 20 mADC – 4 ... 20 mADC – 0 ... 5 VDC – 1 ... 5 VDC Further information is provided in Chapter 5.9. Output signals The Condair GS provides the following output signals: – 10 VDC (max. 20 mA) – Remote operating and fault signals (4 potential-free contacts) Further information is provided in Chapter 5.9. 4.3 Options At the moment no options are needed for the Condair GS. 4.4 Accessories 4.4.1 Accessories overview Model Condair GS 40 ... 80 ... - Page 18 1800 2000…2400 81-2000 2000 2200…2600 81-200 200 2500…2900 81-2500 2500 2700…100 Material: CrNi steel Special length on request To fully exploit the overall capacity of your GS humidifier, the output of each steam outlet may be fed to more than one distribution pipe. If more than one steam distribution pipe is fed per steam outlet the steam line must be divided into multiple branches. Appropriate fittings are available on request. Note: If the humidification distance (see chapter 5..1) has to be reduced for technical reasons, the steam output of your unit must be divided between two steam distribution pipes or the OptiSorp steam distribution system must be used. If this is the case, contact your Condair supplier. OptiSorp steam distribution system The OptiSorp steam distribution system is used in ventilation ducts with a short humidification distance (for the calculation of the humidification distance refer to chapter 5..1). When ordering an OptiSorp system the duct dimension must be specified. Please consult the data in the following table. OptiSorp Number of steam Max. steam capacity Duct dimensions in kg/h connections Width in mm Height in mm System 1 45 (0) 450...4000 450...1650 System 2 90 (60) 450...4000 450...2200...
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Page 19: Mounting And Installation Works
Mounting and installation works 5.1 Important notes on mounting and installation works Qualification of personnel All mounting and installation work must be performed only by adequately qualified personnel familiar with the Condair GS. Ascertaining the qualifications is the customer‘s responsibility. General notes All the information contained in these installation, commissioning and service instructions relating to equipment assembly and to gas, flue gas, water, steam and electrical installation must be uncondi- tionally observed and complied with. The local directives and regulations for the installation of gasfired equipment (Steam humidifiers) must be unconditionally observed and complied with. All local regulations relating to the execution of gas, flue gas, water, steam and electrical installations must be observed and complied with. Safety The connection of the Condair GS to the mains electrical supply must not be made until all installa- tion work has been completed. Incorrectly executed installations can result in personal injury and/or damage to property through explosions, fires, carbon monoxide poisoning, electric shock, etc. If you require assistance, please contact a qualified installer, your local gas supplier or your Condair representative. In the installation itself, use only materials available from your Condair representative and accessories approved by him. -
Page 20: Unit Fitting
(in accordance with local building regulations). For UK only: Please refer to BS 5440: Part II or BS 6644 when installing units. We draw your at- tention especially to combustion an ventilation air supply requirements for plant rooms. Permanent low and high level openings communicating directly with the outside air shall be fitted with grilles having a total minimum free area as follows. Free area grille sizes Low level High level GS 40 14,400 mm 14,400 mm GS 80 55,800 mm 27,900 mm GS 120 70,200 mm 5,100 mm GS 160 84,600 mm 4,00 mm GS 200 89,000 mm 50,500 mm GS 240 11,400 mm 57,700 mm The room air-independent humidifiers (RS units) do not require a separate ventilation opening, since the combustion air required is provided by an air intake pipe from outside the building. CAUTION! Operation of the humidifier with unclean air can lead to safety problems and reduce the output of the unit. Impurities in the air are, for example: Halogens, ammonia, chloride, excessive dust, lime and dirt. For questions about air quality, please refer to the technical service department of your Condair distributor – The Condair GS gasfired steam humidifiers are designed for floor mounting on the unit stand (included in the delivery) fixed to the floor. – The sheet covering of the Condair GS heats up during operation (max. surface temperature approx. 60 - 70 °C). Therefore make sure that no heat-sensitive materials are placed in the immediate vicinity of the humidifier. - Page 21 – No combustible materials must be placed in the immediate vicinity of the Condair GS humidifier (Insulation materials, wooden floor coverings, etc.). Observe local regulations! – Do not mount the humidifier in a location that is endangered by heat or frost! If the humidifier must be mounted outside, it must be housed in a weatherproof and thermostatically ventilated cabinet. If necessary, please contact your Condair representative. – Do not mount the humidifier on a base that is subject to vibration. If necessary, please contact your Condair representative. – The Condair GS must be installed only in locations equipped with a water drain or with sensors that safely interrupt water supply in case of leakage. – Do not cover the air openings in the top and bottom covers of the humidifier housing otherwise the air flow may be insufficient. Furthermore, do not place the unit in a narrow niche or a closed compartment (observe minimum distances). – Position the humidifier so that the unit is easily accessible and there is sufficient space for main- tenance work. The minimum distances shown in the following illustration must be maintained. min. 1000 mm min. 1000 mm min. 1000 mm...
- Page 22 Dimensions (in mm) GS 40 GS 160 4" 1 3/4" GS 80 GS 200 Steam outlet Air intake 3" 4" (RS units only) Flue gas outlet Control signal GS 120 GS 240 3" 4" 1133 Gas supply Water supply Water drain Auxiliary water drain Power supply 1094...
- Page 23 5.2.2 Mounting the humidifier The Condair GS humidifiers must be mounted on the unit stand supplied with the unit. If mounting on the unit stand supplied is not possible in your particular case, select a method of mounting that is of similar stability. In case of doubt, please contact your Condair supplier. Mounting instructions 1. Assemble the unit stand as shown in the separate installation instructions. Hand tighten all bolts only. 2. Lift up humidifier with a lifting device approx. 900 mm above the floor. . Position unit stand below the humidifier. 4. Lower the humidifier and align with the holes of the unit stand. 5. Fasten the humidifier to the unit stand using the bolts, cup washers and nuts provided. 6. Tighten all nut and bolt pairs to 22.6 Nm (200 lb-in) or until secure. 7. Position the entire assembly to the desired location. Make sure the humidifier is stable, shimming of the floor below the support legs of the unit stand may be necessary. 8. Fix the unit stand to the floor (mandatory) via the four holes in the support plates of the unit stand.
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Page 24: Steam Installation
Relative supply air humidity prior to humidification at the lowest supply air temperature φ2 in %rh: Relative supply air humidity after the steam distribution pipe at maximum capacity Example given: φ1= 30 %rh, φ2= 70 %rh humidification distance B 1.4 m (0.6 m for steam distribution system OptiSorp) Note: If the humidification distance has to be reduced for technical reasons, the amount of steam per steam outlet must be divided between two steam distribution pipes or the steam distribution system OptiSorp must be used. If this is the case, contact your Condair supplier. - Page 25 Minimum distances to be observed To prevent the water vapor, that is emitting from the steam distribution pipe, from condensing on downstream system components, a minimum distance to the steam distribution pipe must be ob- served (depends on the humidification distance “B ”). before/after constriction after expansion before bend 0.5 x B 0.5 x B before branch before diffuser before control/temperature sensor 5 x B before/after filter/register before/after fan, zone exit 1.5 x B 5 cm * 2,5 x B before submicron particle filter Installation notes and dimensions The steam distribution pipes are designed for either horizontal installation (on the duct wall) or, with accessories, for vertical installation (in the duct floor). The outlet orifices should always point upwards and at right angles to the airflow. If possible, the steam distribution pipes should be installed on the pressure side of the duct (max. duct pressure 1700 Pa). If the steam distribution pipes are installed on the suction side of the duct, the maximum vacuum must not exceed 800 Pa. Select a location for the installation, tailored to suit your duct (see the following illustrations) and position the steam distribution pipes in the duct so that a uniform distribution of steam is achieved.
- Page 26 In positioning the steam distribution pipes, the following dimensions should be observed: g min.= 100 mm h min.= 85 mm m in H min.= 250 mm H ≥400 mm H min.= 200 mm m in H min.= 400 mm H min.= 50 mm H min.= 00 mm m in m in H min.= 600 mm H min.= 500 mm H min.= 400 mm m in m in m in H min.= 720 mm H min.= 600 mm H min.= 500 mm m in m in m in m in H min.= 840 mm H min.= 700 mm H min.= 600 mm...
- Page 27 Note: When locating the OptiSorp steam distribution system please note the instructions in the separate documentation for this product. Guidelines for dimensioning the ventilation ducts – To facilitate the installation of the steam distribution pipes and for control purposes, a sufficiently sized control opening should be planned. – Within the range of the humidification distance, the ventilation duct should be waterproofed. – Low temperature ducts below 15°C, shallow ducts, or branch ducts might require the use of a field supplied condensate drain pan below the steam distributor (see figure below). Branch duct Shallow duct Drain pan Ceiling to drain to drain Drain pan – Air ducts passing through cold rooms should be insulated to prevent the humidified air from con- densing along the duct wall. – Poor airflow conditions within the air duct (e.g. caused by obstacles, tight bends, etc.) can lead to condensation of the humidified air. – Steam distribution pipes must not be mounted to round ducts. – Exercise extreme caution when installing in fiberglass or internally lined ducts. If necessary, re- move 10-15 cm of the lining where the steam is being introduced. If you have questions relating to the dimensioning of ventilation ducts in combination with Condair steam humidifiers, contact your Condair supplier. Installing the steam distribution pipes/OptiSorp steam distribution system Detailed information on the installation of steam distribution pipes and OptiSorp steam distribution system can be found in the separate “Mounting Instructions” for this products.
- Page 28 5.3.2 Installing the main steam pipe The steam pipe between the steam outlet of the unit and the steam hose adapter (main steam pipe) must be made with solid piping. steam hoses (max. length 4 m) Main steam pipe (max. length 6 m) steam hose adapter (accessory “SA..”) The following notes must be observed: – The internal diameter of the steam outlet on the unit must be maintained over the entire length of the main steam piping. – The maximum length of the main steam pipe is 6 m. Important! Allowance must be made for a pressure loss of 10 mm water column (approx. 100 Pa) per meter length or per 90° bend. – The minimum bend radius for solid pipes is 4-5 x internal diameter. 90° bends should be avoided. Wherever possible, pipe bends with large radius should be used (e.g. produced using a pipe bending machine, or constructed from a pair of 45° bends). This reduces the performance loss due to the formation of condensate, and in addition, the static pressure in the steam line. – Use Cu pipe (for operation with untreated drinking water only) or stainless steel pipe (min. DIN 1.401) exclusively.
- Page 29 5.3.3 Installing the steam hoses between steam hose adapter and steam distributors Important! Use original Condair steam hose exclusively. Other types of steam hoses can cause undesired operational malfunctions. The following notes must be observed: min. 20 % min. 5 % – Lead the steam hose with an upslope of at least 20% or with a minimum downslope of 5% to the steam distribution pipe. – The steam hose should be kept as short as possible (ideally 2 m, max. 4 m) while observing the minimum bend radius of 300 mm. Important! Allowance must be made for a pressure loss of 10 mm water column (approx. 100 Pa) per meter steam hose. – Reductions in the cross section such as kinks should be avoided throughout the entire length of the hose. The installation of a stop cock in the steam hose is not permissible. – Steam hoses must be prevented from sagging (condensate pockets); if necessary, support with pipe clamps, rails or wall brackets. If sagging can not be prevented (e.g. when passing by obsta- cles) a condensate drain with siphon (min. hose bend Ø200 mm) must be mounted at the lowest point of the steam hose (see following illustration). min. 5 % min. 20 % min. 20 % – Important! When deciding on the length and layout of the hose, it should be noted that the steam hose may become somewhat shorter with progressive ageing.
- Page 30 Securing the hose The steam hose must be secured to the steam distribution pipe and humidifier steam outlet by means of hose clamps. Steam line with fixed piping For steam lines with fixed piping, the same instructions apply to the laying of the piping as already described. The following additional notes should be observed: – The minimum internal diameter of 45 mm should be applied over the whole length of the piping. – Use exclusively Cu pipe (for operation with untreated drinking water only) or stainless steel (min. DIN 1.401). – To minimize the condensate formation (=loss), the steam pipes must be insulated. – The minimum bend radius for solid pipes is 4-5 x internal diameter. 90° bends should be avoided. Wherever possible, tube bends with large radii should be used (e.g. produced using a tube bending machine, or constructed from a pair of 45° bends). This reduces the performance loss due to the formation of condensate, and in addition, the static pressure in the steam line. – Important! Allowance must be made for a pressure loss of 10 mm water column (approx. 100 Pa) per meter length or per 90° bend. – Connection of the steam pipes to the steam distribution pipe and steam humidifier is effected by means of short lengths of steam hose secured with hose clamps. 5.3.4 Installing the condensate hoses Important! Use original Condair condensate hose exclusively. Other types of hoses can cause oper- ational malfunctions. min. 20 % The individual condensate hoses of the main steam pipe (if present), the steam hose adapter (if present) and the steam distribution pipes must be led down with a minimum downslope of 20 % via a siphon (min. hose bend ø200 mm) into a discharge funnel. Important! Before putting the unit into operation, the siphon of the condensate hose must be filled with water.
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Page 31: Water Installation 1
5.4 Water installation 5.4.1 Performing the water installation Overview water installation min. 15 cm 1 Filling water connection BSP /4" (outside thread) 2 Filter valve (accessory “Z261”) Filling water supply line (min. inner Ø: 12 mm) 4 Manometer (installation recommended, building side) 5 Pressure reducing valve (compulsory for water pressures >8 bar, building side) 6 Water drain connection /4" (Ø19 mm) 7 Drain line, building side (min. inner Ø: 45 mm, min. 50 cm directed vertically downwards) 8 Funnel (building side, min. height 15 cm) 9 Siphon (min. inner Ø: >45 mm, building side) 1 0 Auxiliary water drain connection NPT 1/2" (inside thread) 1 1 Shut-off valve (installation recommended, building side) - Page 32 The water supply pipe is to be connected via the filter valve (accessory “Z261”), to the connection on the unit (see foregoing illustration). The filter valve should be installed as close to the humidifier as possible. Note: Instead of the filter valve, a shut-off valve and a water filter 5 µm ( (both essential) can be used. The following specifications must be observed: – Connections on unit: BSP 3/4" (outside thread) – Min. inner diameter of supply line: 12 mm – Admissible mains pressure 3.0 to 8.0 bar (hammer-free system) For mains pressures >8 bar, connection must be made via pressure reducing valve (adjusted to .0 bar). For mains pressures <.0 bar please contact your Condair supplier. – Supply rate: 10 l/min – Admissible supply temperature: 1…30 °C – Notes on water quality: – For the water supply of the Condair GS, use exclusively untreated drinking water or fully demineralized water. Note: The use of fully demineralized water reduces the maintenance and the cleaning of the water tank to a minimum. – The use of additives such as corrosion inhibitors, disinfectants, etc. is not allowed, since these additives may endanger health and affect proper operation. – If the Condair GS shall be operated with softened or partly softened water, please contact your Condair supplier. – The connection material must be pressure-proof and certified for use in drinking water supply systems. CAUTION! Fully demineralized water is aggressive. When making connections to a fully demineralized water system, use exclusively plastic or stainless steel installation materials (min. DIN 1.401). – Important! Before connecting the water line to the unit, the line must be flushed thoroughly.
- Page 33 Water drain The drain line should be connected to the unit drain connection using a hose coupling. The drain line should drop vertically down for a minimum of 50 cm and into an open drain funnel (min. height 15 cm). The drain line is then connected via a siphon to the building drain line. The minimum internal diameter of 45 mm must be maintained over the full length of the building drain line. Make sure that the drain line is correctly attached and easily accessible for the purpose of inspection and cleaning. The following connection data should be observed: – Connection on unit (hose connection): 3/4" (Ø19 mm) CAUTION! Use only temperature-resistant installation materials! When using fully demineralized water, only stainless steel (min. DIN 1.401) or chemically-re- sistant plastic (e.g. Polypropylene) connection components must be used. – Drainage capacity: approx. 20 l/min – Min. inner diameter of the building drain line: 45 mm – Min. downslope after siphon: 10 % Note: It is not permissible to curve the drain pipe upwards, because this can lead to the collection of deposits at the lowest point in the pipe and to the blockage of the pipe.
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Page 34: Gas Installation 4
5.5 Gas installation All installation work must be carried out in accordance with the applicable local building and in- stallation regulations. 5.5.1 Performing the gas installation Overview Gas installation 1 Gas supply connection Model Connection GS 40 BSP 1/2" GS 80 BSP /4" GS 120 and GS 160 BSP 1" GS 200 and GS 240 BSP 1 1/4" 2 Gas shut-off valve (building side) Sediment trap (Installation - building side - essential in the case of the use of steel gas pipes) Installation notes The gas supply pipe must be connected to the connection on the unit via a shut-off valve (essential requirement), which is installed in the immediate vicinity of the unit. When steel gas pipes are in use, it is essential that a sediment separator be fitted between the shut-off valve and the unit connection. The following connection data must be adhered to: – Permissible gas operating pressure: Operating pressure (mbar) Nominal Natural gas H, E, E(S) Natural gas L, ELL Natural gas HS... - Page 35 5.5.2 Leak testing After completion of the installation work, the whole gas line must be tested to a maximum pressure of 40 mbar (4.0 kPa) for natural gas or 150 mbar (15 kPa) for propane and checked for leaks us- ing a commercially available soap solution. The bubbles indicate leaks. All leaks must be eliminated before the humidifier is put into operation. DANGER! Never use an open flame to check for leaks. The presence of any leakage is a source of danger to persons and to property, due to the possibility of fire and explosion. If the gas circuit must be tested to a pressure of over 150 mbar (15 kPa), the gas supply pipe must be removed from the unit connection. After the test, the gas line must be depressurized before it is reconnected to the unit. CAUTION! Non-observance of the above instruction can lead to damage to the gas pressure regulating valve. Gas pressure valves overloaded due to high pressure are not covered by the manufacturer‘s guarantee. 5.5.3 Conversion instructions for operating the humidifier with another type of gas Ex works the appliance is equipped to operate on one type of gas. To convert an appliance for opera- tion on another type of gas, follow the directions below (see also illustration on the following page). Important: The conversion shall be carried out by a manufacturer’s authorized representative or person trained and licenced for such activities, in accordance with the requirements of the manufacturer or local authorities having jurisdiction in the area of installation. 1. Disconnect the humidifier from the electrical power supply and take precautions against inadvert- ent switching on. 2. Turn off gas supply to appliance and secure it against inadvertent opening. . Undo the screw(s) (phillips screwdriver) and remove the right side panel(s).
- Page 36 11. Attach the gas pipe connection (with mounted O-ring) and the pressure switch assembly to the gas pressure regulating valve supplied (comes with venturi manifold attached). Warning! Make sure the gas type indicated on the label of the venturi manifold corresponds to the gas you are using. Do not change the setting of sealed adjustment screw “A”. 12. Fix the new venturi manifold (don’t forget the cork gasket) together with the gas pressure regulat- ing valve with the two screws to the combustion air blower. 1. Reconnect the flexible gas pipe to the gas pressure regulating valve and tighten the coupling. 14. Fix the inlet elbow with the hose clamp to the venturi manifold. 15. Reconnect the hose from the air pressure switch and if present from the air inlet manifold (on RS units only) to the inlet elbow. 16. Reconnect the electrical cables to the gas pressure regulating valve and the air pressure switch. 17. On multiple burner units repeat steps 4 to 16 for each gas valve assembly. Hose to air inlet manifold (RS units only) Hose to pressure switch Inlet elbow Hose clamp Venturi manifold Pressure switch Gas pressure regulating valve Flexible gas pipe Cork gasket gas pipe connection O-ring Combustion air blower 18. Carry out a leakage test (Refer to instructions in 5.5.2).
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Page 37: Flue Gas Installation 7
5.6 Flue gas installation Important: Since the regulations for the installation of flueing systems differ from country to country, the relevant local regulations must be adhered to without reservation. In any case, please consult your Condair representative. This applies in particular to the room air-independent steam air humidifiers (RS units). Please note that flueing must be designed for overpressure or underpressure, depending on local regulations. All work concerning the flue pipe installation must be performed only by adequately qualified person- nel. Ascertaining the qualifications is the customers responsibility. 5.6.1 Performing flue gas installation Overview GS 40 ø80 mm GS 80 ø100 mm GS 120 / GS 160 ø10 mm GS 200 / GS 240 ø160 mm ø15 mm 1 Flue gas connection on the unit – GS 40: ø76 mm (") – GS 80: ø101 mm (4") – GS 120/GS 160: ø127 mm (5") – GS 200/GS 240: ø152 mm (6") 2 Flue gas adapter with condensate drain (accessory “FA...”) – GS 40:... - Page 38 Flue arrangement There are different types of applicable flue systems for the Condair GS depending on the unit type (room air-dependent or room air independent units). The following flue gas diagrams are for guidance only, and must be read in accordance with the local country codes for flue gas systems. Applicable flue systems for room air-dependent units Type B23 Rain cap (by client) min. 1.5 m > 2.5 m ≤ 2.5 m flue gas terminal (according local regulations) max. flue length for type B2 flue systems: 30 m (see installation notes) Applicable flue systems for room air-independent units – RS units Type C33 min. 1.5 m Rain cap (by client) correct Reference part number for flue terminal/adapter from Muelink&Grol GS 40: 82420 GS 80: 82421 GS 120/GS 160: 82422 GS 200/GS 240: 8242 not correct...
- Page 39 Type C53 Rain cap (by client) min. 1.5 m > 2.5 m ≤ 2.5 m air inlet terminal (according local regulations) flue gas and air inlet terminals (according local r egulations) max. flue length for type C5 flue systems: 21 m (see installation notes) Type C63x Note: Where local regulations permit, the RS units can be installed as C6x appliances. As a C6x appliance, the Condair GS can be connected to a separately approved and maketed system for the supply of combustion air and discharge of flue gases. For such applications, refer to the applicable local regulations and the separate Installation Instructions “Installation as a C6 appliance” available from your Condair dealer.
- Page 40 ø76 mm (") – GS 80: ø101 mm (4") – GS 120/GS 160: ø127 mm (5") – GS 200/GS 240: ø152 mm (6") – Horizontal pipe sections should have a minimum upward slope of 21 mm/m and should be sup- ported every 1.5 m and additionally supported at every pipe bend. – For any flue lengths over 7 m long, use insulated pipes. – When the flue pipe is lead through nearby rooms the pipe must be equipped with an F90-type insulation. – Provide a fire-proof screen or barrier (at a minimum distance of 50 mm to flue gas pipe) to prevent personal injury in areas where inadvertent personnel contact with flue pipe can occur or where heat-sensitive products are stored. – Secure the flue pipe (e.g. by means of beading the pipe, see overview) to prevent it from slipping into the flue connector of the unit. – A condensate discharge point should be installed at an appropriate position in the GS humidifier flue gas system (see overview). A siphon with a minimum 00 mm head of water must be installed in the condensate discharge line, so that no flue gases can escape via the discharge pipe. Before operating the humidifier, make sure that the siphon in the condensate discharge is filled with water and the condensate outlet is in accordance with the applicable local regulations for sanitary installations. Flueing with overpressure When flueing with overpressure the maximum admissible length of the flue pipe equals 0 meters for room air-dependent units and 21 meters for room air-independent RS unit (assuming same diameter as connector on Condair GS) where each 90° elbow is equal to m and each 45° elbow is equal to 1.5 m of straight pipe. Three elbows outside the humidifier casing is a recommended maximum for flueing systems. We recommend 0 m or 21 m respectively flue length maximum to ensure that output is maintained. For lengths over 0 m or 21 m respectively, please consult your Condair supplier.
- Page 41 Flueing with underpressure If local regulations require flueing with underpressure, the underpressure must be within -0.2 and -0.62 mbar. The applicable local regulations for the layout of flue gas pipes for underpressure must be observed and complied with. Additional requirements when flueing through a sidewall Attention! Some countries prohibit leading the flue pipe through a side wall. Observe local regulations and contact the local authorities and/or the chimney-sweep. Position the humidifier as near as possible to the wall through which the flue pipe is to be taken. Locate the flue terminal at least 1 m above any forced air inlet located within m; or at least 1 m below, 1 m horizontally from, or 0.5 m above any door, window, or gravity air inlet into any building. A minimum horizontal clearance of 1 m from electric meters, gas meters, regulator and relief equip- ment is required. Locate the flue terminal at least 2.5 m above grade when it is adjacent to public walkways. Locate the bottom of the flue terminal at least 45 cm above grade or ground, or normally expected snow accumulation level. The snow level may be higher on walls exposed to prevailing winds. Avoid areas where local experience indicates that condensate drippage may cause problems such as above planters, patios, or over public walkways, or over an area where condensate or vapor could create a nuisance or hazard, or could be detrimental to the operation of regulators, relief valves, or other equipment. Refer to the flue manufacturer’s installation instructions. Additional requirements for flue gas systems of RS units The RS units are certified as C and C5 appliances. Where local regulations permit, the RS units can be installed as C6 appliances. For such applications, refer to the separate Installation Instruc- tions “Installation as a C6 appliance” available from your Condair dealer. Please observe the following additional requirements for the flue gas installation of RS units: – Only use installation material in accordance with the local regulations. – The flue gas pipe and the air inlet pipe must have the same length (min. 2.1 m, max. 21 m (C: max. 15 m)). – Observe the requirements regarding terminal locations in section 5.7.
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Page 42: Installation Of The Air Inlet Line For Room Air-Independent Units (Rs Units)
5.7 Installation of the air inlet line for room air-independent units (RS units) Important: Since the regulations for the installation of air supply systems for gasfired appliances differ from country to country, the relevant local regulations must be adhered to without reservation. In any case, please consult your Condair representative. Installation of the air supply line must only be carried out by adequately qualified personnel. 5.7.1 Performing air supply installation Overview 1 Air supply connection on RS units – GS 40: ø76 mm (") – GS 80: ø101 mm (4") – GS 120/GS 160: ø127 mm (5") – GS 200/GS 240: ø152 mm (6") 2 Connection hose (building side) Hose clamps (building side) 4 Air supply line, hose or rigid pipe (building side) - Page 43 Air supply arrangement Installation notes – Max. admissible supply air temperature is 0 °C. Make sure the air supply line is not heated up by the flue gas line. – The maximum pipe length for the air supply line is equivalent to 21 meters. The minimum diam- eter (see above) must be maintained over the entire length of the line. In this estimate, each 90° bend is equal to m of straight pipe length and each 45° bend is equal to 1.5 m of straight pipe length. Not more than pipe bends must be built into the air supply line. The air supply line should be approximately as long as the flue gas line and must be supported at least every 1.5 m of its length and additionally supported at every pipe bend. – The air supply line can be provided either as a fixed tube or as a hose. The minimum internal diameter must be observed over the entire length. – GS 40: ø76 mm (") – GS 80: ø101 mm (4") – GS 120/GS 160: ø127 mm (5") – GS 200/GS 240: ø152 mm (6") – All connections on the air supply line must be positively sealed with a silicone sealant to ensure proper sealing of the air supply line. – The air supply line must be installed with the supplied air intake wall terminal (see illustration above and refer to section “Terminal locations”). – At low temperatures (under 18 °C), water of condensation can form on the outside of the air sup- ply line. To prevent this, we recommend that air supply lines that are situated in cold rooms are insulated.
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Page 44: Installation Of Control And Monitoring Devices
Terminal locations When locating the air intake and the flue gas terminals the following requirements must be ob- served: – All terminal must terminate at an outside location. – Location of air intake and flue gas terminal must comply with all local and national regulations. – Air intake and flue gas terminal can be installed in different pressure zones. – Air intake and flue gas terminal cannot be installed on opposite walls of the building. – A minimum distance of 1.2 m must be maintained between the air intake and the flue gas terminal to prevent recirculation of flue gases (see figure above). – When the flue gas or air intake terminal is located less than 2.75 m from the ground or can be accessed by personnel a guard must be installed at a minimum distance of 50 mm to the terminal to prevent personal injury. 5.8 Installation of control and monitoring devices – Install the room humidity sensor and the safety humidistat at the same height as thermostats and in a location where the measured humidity corresponds to that of the room. Under no cir- cumstances should the humidity sensors be positioned in the vicinity of the air flow from ventila- tor units or air intake grids. Do not mount humidity sensors on an outer wall, where temperature fluctuations can affect the control behavior. -
Page 45: Electrical Installation
5.9 Electrical Installation Wiring diagram 0…10 VDC 0…10 mADC 2…10 VDC 2…20 mADC 0…5 VDC 0…20 mADC 1…5 VDC 4…20 mADC JP3: 5 Vdc, max. 500 mA JP4: 24 Vdc, max.150 mA 1 2 3 4 5 6 7 8 Control Board J10-Modul J13-Feedback 24VAC... - Page 46 Primary wiring Humidifiers require field wiring to primary voltage terminal blocks. Power requirement is 220…240V/50…60Hz, 10 A slow-acting fused (“F1”) circuit, single phase. Wiring is fed through a 22 mm hole in the bottom of the control compartment. Installation of external service switch “Q” (all pole disconnecting device with a minimum contact opening of mm) is mandatory. When installed, the appliance must be electrically grounded in accordance with local codes, if an external electrical source is utilized. Connect ground wire to cabinet ground clamp. External wiring sizes must be in accordance with existing local electrical codes and by-laws. Remote operation and fault indication (H1) The Remote operation and fault indication board is equipped with 4 relays for remote operation and fault indication. – “On”: this relay closes after the humidifier has been powered up – “Steam”: this relay closes as soon as steam is produced – “Service”: this relay closes when the set maintenance interval has expired – “Error”: this relay closes when an error occurs External safety circuit (K1) To guarantee the safety of the humidification system, monitoring the operation by means of a safety circuit is an absolute requirement. To accomplish this, the potential-free contacts (250V/2A) of external monitoring devices (B1: safety high limit humidistat, B2: airflow monitor, B: ventilation interlock, etc.) are connected in series to terminals 1 and 2. Control or sensor signal The control signal (signal Y) is connected to terminals and 4. The air supply limit signal (signal Z) is con- nected to terminals and 5. By default the Condair GS is configured for a 0…10 VDC control signals. The control signal type can be modified via the software (see menu “user settings”, in the operating instructions for the Condair GS control). The configuration whether the Condair GS is controlled via the internal or via an external controller is also done via the software. Output A3 This output is available for custom purposes. The lines are connected to terminals 6 and 7. The output signal type is configured by setting the jumper on JP (5 Vdc max. 500 mA) or on JP4 (24Vdc max. 150 mA). Full tank blow down 24 VAC (S1) This input signal can be used for remote triggering a full tank blowdown. If a 24 VAC signal is present for more than 60 seconds the tank blows down. The signal line is connected to terminals 8 and 7.
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Page 47: Inspecting The Installations (Check List)
Inspecting the installations (Check list) Before the Condair GS is operated for the first time, the responsible personnel must inspect all installations for correct execution (observing of local regulations) and check that the unit is correctly configured. All deficiencies must be corrected by specialist action before commissioning takes place. Use the following check list to ascertain that the installations were performed correctly: – Unit installation Is the unit in the correct place (see chapter 5.2.1)? Is the unit correctly aligned vertically and horizontally? Is steam humidifier properly secured (unit stand fixed to the floor)? – Steam installation – Steam distribution pipe Steam distribution pipe correctly positioned and secured (screws tightened)? Are the outlet orifices at right angles to the air flow direction? – Steam pipe between steam outlet on unit and steam hose adapter (main steam pipe) Maximum length of 6 m? Minimum bend radius of 4-5 x internal diameter of solid steam pipe? Is the pipe properly insulated? Is the correct installation material used? Is the minimum internal diameter maintained over the entire pipe length? – Steam hose between steam hose adapter and steam distributor Maximum length of 4 m? Minimum bend radius of 00 mm (4-5 x internal diameter with fixed piping)? Have the instructions for hose positioning been followed? Steam hose: no sagging (condensate pocket)? Rigid steam lines: properly insulated? Correct installation material used? Minimum internal diameter maintained? Steam hose securely attached with clamps? Heat expansion during operation and shortening of the hose with ageing taken into con- sideration? – Condensate hoses Downslope of at least 20 %? Siphons existing and filled with water? Condensate hoses correctly fixed? – Water installation... - Page 48 Have condensate discharge outlets been incorporated where necessary and provided with a siphon and is the siphon filled with water? Is the flue gas pipe sealed and has the permitted sealing material been used? Have all heat-sensitive and easily flammable materials been removed from the vicinity of the flue gas pipe? Is the flue gas pipe insulated at all the necessary positions? Is the flue gas outlet terminal outside the building correctly located? Have the permitted sealing materials been used? – Air supply system for room air-independent units (RS units) Does the air supply system comply with the local regulations? Does air supply line length comply with the maximum recommended (see 5.7)? Is the minimum pipe cross-section (corresponding to the internal diameter at the unit connec- tion) maintained over the entire length of the air supply line? Is the air supply line correctly sealed and has the permitted sealing material been used? Is the inlet terminal outside the building correctly located? – Electrical installation Does the electrical installation comply with the local regulations? Do the mains voltages applied correspond to the supply voltage stated on the rating plate of the unit? Is the voltage supply correctly fused? Is the service switch “Q” installed in the supply cable? Are all components correctly connected in accordance with the wiring diagram? Are all connection cables fixed? Are the connecting cables free of tension (fitted through cable glands/secured with cable clamps?) Is the Condair GS correctly configured?
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Page 49: Operation
Operation 7.1 Important notes on operation Qualification of personnel The Condair GS must only be commissioned and operated by persons who are familiar with equip- ment and adequately qualified to undertake this work. Monitoring such qualification is a matter for the customer. Initial commissioning must only be undertaken by the Condair service technician or by the customer‘s own specially trained personnel. Safety Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Should overheating occur, or the gas fail to shut off, shut off the manual gas valve to the appliance before shutting off the electrical supply. Do not operate this appliance if any part has been exposed to excess humidity. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water. An open unit must not be operated. Before putting the Condair GS humidifier into operation make sure all doors are closed and locked with the screw. For safe operation of the Condair GS humidifier, make sure the ambient conditions meet the respec- tive specifications defined in this documentation. To prevent excess humidification the operation of the Condair GS must be monitored by a high limit on/off humidistat (see chapter 5). -
Page 50: Function Of The Display And Operating Elements
7.2 Function of the display and operating elements Display and control unit Function: Configuration of the Condair GS. Indication of operating parameters. Reset of maintenance counter. red LED “Fault” Function: The LED flashes in case of a temporary malfunction of the unit (Warning status). Fur- ther operation of the unit is still possible.The warning message is shown in the display. The LED lights in case of a severe malfunction of the unit (Fault status). Further operation is not possible any longer. The fault message is shown in the display. The LED flashes alternately with the green LED if the external safety chain (ventilation interlock has triggered) is open. As soon as the safety chain is closed again, the indica- tion disappears. yellow LED “Maintenance” Function: The LED lights if the maintenance is due. green LED “Humidification” Function: The LED lights if the unit produces steam. The LED flashes alternately with the red LED if the external safety chain (ventilation interlock has triggered) is open. As soon... -
Page 51: Commissioning
7.3 Commissioning Before the Condair GS is operated for the first time, the responsible personnel must inspect all installations for correct execution and check that the unit is correctly configured (see check list in chapter 6). All deficiencies must be corrected by specialist action before commissioning takes place. The humidifier is operated as follows: 1. Examine the humidifier and all installations for possible damage. CAUTION! Damaged units and units with damaged installations must not be operated! 2. Check the cleanliness of the outer cabinet: The panels may be cleaned with a damp cloth and warm soapy water. CAUTION! Make sure no water is dripping into the cabinet through the ventilation openings in the unit housing. . Fill the water tank: • Close the shut-off valve in the gas supply line. • Open the shut-off valve in the water supply pipe. • Set humidity controller to maximum humidity demand. • Switch-on the service switch in the electrical supply circuit. • Switch-on the humidifier at the unit switch. • The filling valve opens and the water tank fills (filling time: approx. 0 minutes for the largest model, for smaller units the filling time is shorter). At the end of the filling cycle the control unit checks the function of the water level unit. If the control unit has verified the proper function of the water level unit the ignition sequence starts. After three attempts at ignition the auto ignition switches off. The red LED lights and a corresponding error message is shown in the display. Now switch the humidifier Off. 4. Check ignition: The regulator is still set to maximum humidity demand and the shut-off valve in the gas line is closed. - Page 52 Repeat this sequence minimum 2 times in order to make sure no air is left in the gas sy- stem. • Switch-off the humidifier at the unit switch. • Reconnect all ignitors to the ignition modules. 6. Start the humidifier: • Open the shut-off valve in the water supply pipe. • Open the shut-off valve in the gas supply pipe. • Switch on the external service switch. • Switch the humidifier On at the unit switch. The Condair GS carries out a system and level test, during which all the Condair GS 240 LEDs light up. START UP If a failure occurs on the system test, a corresponding error message is shown in the display. After the system test the unit is in normal operation mode. The display shows Condair GS 240 the standard operating display (first page of the indication level). Standby Note: The contents of the standard operating display depends on the actual 03.03.2009 12.00.00...
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Page 53: Notes On Operation
The service warning message is shown in the display “Steam demand” Steam demand/ Green LED lights. Steam production The standard operating display is shown. “Unit on” Unit switched on Unit switch lights. The standard operating display is shown. 7.4.2 Inspections during operation During operation the Condair GS and the humidification system have to be inspected weekly. On this occasion check the following: • the water, gas and steam installation for any leakage. • the humidifier and the other system components for correct fixing and any damage. • the electric installation for any damage. If the inspection reveals any irregularities (e.g. leakage, error indication) or any damaged compo- nents take the Condair GS out of operation as described in chapter 7.5. Then, contact your Condair representative. 7.5 Taking the unit out of operation If the humidifier must be taken out of operation, e.g. for maintenance work, proceed as follows: 1. Close the shut-off valve in the gas supply pipe. 2. Close the shut-off valve in the water supply pipe. . Press the drain switch. The gas pressure regulation valve/s close/s and the tank empties. Important! If drain pump is defective, drain tank manually via the auxiliary drain. 4. Wait until the water tank empties. Now switch off the humidifier at the unit switch. 5. Isolate the humidifier from the electrical power supply: Switch off the external service switch in the power supply circuit and secure the switch in the Off position to safeguard against unintentional switch-on. -
Page 54: Maintenance
Maintenance 8.1 Important notes on maintenance Qualification of personnel All maintenance work must be carried out only by well qualified and trained personnel authorised by the owner. Maintenance and repair of the electrical installation of the Condair GS must be carried out only by qualified personnel (e.g. electrician) being aware of possible danger and implications. It is the owner’s responsibility to verify proper qualification of the personnel. General notes The instructions and details for maintenance work must be followed and upheld. Only the maintenance work described in this documentation may be carried out. Only use original Condair spare parts to replace faulty parts. Safety Before maintenance is initiated, the Condair GS must be taken out of operation in accordance with instructions in chapter 7.5 and protected against unintentional switching on. 8.2 Maintenance instructions To maintain operating reliability, the Condair GS must be serviced at regular intervals. Here, a distinction is made between the first service after 500 hours of operation (I), the minor service every time the maintenance alarm appears (II) and the annual maintenance (III). Important! Depending on the hardness of the water and the average steam output, under certain circumstances it may be necessary to reduce the service interval for the minor maintenance work. If the lime residues deposited on the floor of the tank exceed a height of 5 cm the interval must be reduced. If the height is less than 5 cm the interval can be extended. Important: Every service action must be documented in the “Maintenance” report sheet (a copy of this document is provided in these installation, commissioning and service instructions). Warranty is void if the specified maintenance intervals are not observed and the maintenance work are not carried out according the instructions. The following is an overview of the work to be carried out at each of the service stages. Components Interval Work required Water tank Drain the tank, then open it and measure the height of the lime residues on the tank floor (max. 5 cm). Remove the lime from the tank. Check all pipe connections to the tank (specially the level unit passages). Clean if necessary. Water outlet pipes, including Press the drain switch and check for free drainage. - Page 55 Components Interval Work required Water installation Check all water hoses in the unit for cracks and correct fixing, replace defective hoses. Check supply pipes for sealing, seal if necessary. Clean the filter valve (or water filter). Check correct function of level unit. Clean or replace if necessary. Unit inner chamber Check the inner chamber for dirt and deposits and clean if necessary. Steam installation Inspect the steam and condensate hoses for cracks and correct fixing, replace defective hoses. Electrical installation Check all cables in the unit for secure fixing and condition and check the insulation. Air supply pipe (RS units) Check for sealing, seal if necessary. Check screen in air intake terminal, clean if necessary. Flue gas temperature sensor Visual check that sensor is intact, wired and attached to the exhaust. Flue gas system Check flue gas system for sealing and remove all traces of condensate. Check screen in flue gas terminal, clean if necessary. If specified, have the flue gas system inspected by an appropriate specialist. Igniter and flame sensor Every year or every 2000 hours (which is reached first).
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Page 56: Dismantling Work For Maintenance And The Replacement Of Components
8.3 Dismantling work for maintenance and the replacement of components Prepare water tank for cleaning Gasket Torque: 5.7 Nm (50 in-Lb) 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Unlock and remove the left front panel. Then, unscrew the nuts of the side tank cover and remove the cover. . On GS 120 ... 240 only: unlock and remove the left top panel. Then, unscrew the nuts of the top tank cover and remove the cover. The re-assembly of the water tank takes place in the reverse sequence. Make sure that the seals of the tank covers are not damaged (replace if necessary). Important! Tighten the nuts of the tank cover(s) with a torque wrench (torque: 5.7 Nm). Do not overtighten the nuts. Cleaning the water tank WARNING! Danger of combustion! The water and all lime deposits in the tank can be extremely hot and may lead to burning on contact. - Page 57 Removal and installation of the combustion air blower 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). . Disconnect cables to combustion air blower, gas pressure regulating valve and pressure switch (note assignment of the connections). 4. On RS units only: Undo the hose clamp and remove the air supply hose from the inlet elbow. Also disconnect the small air hose from the inlet elbow. 5. Undo the coupling of the corresponding flexible gas pipe and disconnect the gas pipe. 6. Undo the two screws of the venturi manifold and lift up the manifold together with the gas pressure re- gulating valve. 7. Undo the two screws of the electronic board (if present) and remove electronic board. 8. Undo the nuts on the outlet side of the blower and remove the blower unit. Reinstallation is achieved by following the reverse sequence. Replace defective seals with new ones. Make sure that all seals are inserted correctly and all cables are connected correctly. DANGER! Danger of explosion! Following maintenance work on the gas system, a leakage test must always be undertaken in accordance with chapter 5.5.2.
- Page 58 Removal and installation of the burner Hold burner only on metal pipe Ceramic matting, do not touch! 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). . Remove the combustion air blower (see the section “Removal and installation of the combustion air blower” above). 4. Disconnect the cables to the igniter and to the flame monitoring unit and remove the components (see the section on “Removal and installation of the igniter and the flame sensor”). 5. Unscrew the four nuts in the burner flange and carefully remove the burner unit . Make sure that the burner is not damaged. Note: Grease, dirt and dust at the ceramic matting can affect the performance of the burner. Re-installation is achieved by following the reverse sequence. Renew the flange seal and replace igniter and flame sensor if necessary. Tight the nuts of the burner flange with a torque wrench (torque: 10 Nm). Make sure all cables are connected correctly. DANGER! Danger of explosion! Following maintenance work on the gas system, a leakage test must always be undertaken in accordance with chapter 5.5.2. Cleaning the burner elements Carefully blow out the burner element mats (ceramic fibre material) from outside with compressed air. Severely soiled burner elements should be replaced. Cleaning the blower/burner chamber of the unit Carefully clean the blower and the burner chamber by freeing any kind of soiling and accumula- tions. CAUTION! Wet cleaning of the blower and the burner chamber is not permitted!
- Page 59 Removal and installation of the gas pressure regulating valve 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). . On RS units only: Undo the hose clamp and remove the air supply hose from the inlet elbow. Also disconnect the small air hose from the inlet elbow. 4. Disconnect electrical wiring to the gas pressure regulating valve and the pressure switch (note the connection layout). 5. Undo the coupling of the corresponding flexible gas pipe and disconnect the gas pipe. 6. Undo the two screws of the venturi manifold and lift up the manifold together with the gas pressure re- gulating valve. 7. Undo the four screws and remove the gas pipe connection of the gas pressure regulating valve. 8. Pull off the hose connected to the pressure switch (note the connection layout). Then, undo the three screws of the pressure switch support and remove pressure switch assembly from the gas regulating valve. 9. Undo the three screws fixing the gas pressure regulating valve to the venturi manifold then, remove the gas pressure regulating valve from the venturi manifold.
- Page 60 Removal and installation of the igniter and the flame sensor CAUTION! When replacing the igniter and the flame sensor, use only the set of spares “burner spare parts subject to wear” available from your Condair supplier, since otherwise the humidifier could be damaged. 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). . Disconnect the wiring connection to the igniter and to the flame sensor. 4. Unscrew the fixing nuts for the igniter and the flame sensor. Now carefully remove the igniter and flame sensor. CAUTION! The silicon carbide igniter is breakable. Therefore handle it with great care to avoid damage. Reinstallation is achieved by following the reverse sequence. Inspect gaskets and replace if defective. Make sure that all gaskets are inserted correctly and all cables are connected correctly.
- Page 61 Replacement of the ignition module 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw (phillips screwdriver) and remove the right front panel. . Note the cable assignment, then remove all connection cables to the ignition module. 4. Unscrew the two fixing screws securing the ignition module and then remove ignition module. Re-installation follows in the reverse sequence. Make sure the connecting cables are connected correctly. Replacement of the air pressure switch 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). . Pull off the hose connected to the pressure switch (note the connection layout). 4. Remove the connection cable to the pressure switch (note assignment before removal). 5. Unscrew the two fixing screws and remove the air pressure switch. Re-installation follows in the reverse sequence. Make sure the cables and the hose are connected correctly.
- Page 62 Replacing the transformer 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw (phillips screwdriver) and remove the right front panel. . Remove the connection cables to the transformer, if necessary labeling the cables before removal. 4. Unscrew the two nuts and remove he transformer. Re-installation is carried out in the reverse sequence. Make sure the cables are connected cor- rectly. Replacing the drain pump 1. Take the humidifier out of operation, as described in chapter 7.5. Important! If drain pump is defective, drain tank manually via the auxiliary drain. 2. Undo the screw (phillips screwdriver) and remove the right side panel. . Remove the connection cables to the drain pump (note assignment before removal). 4. Remove hose clamps on the drain pump connections and pull off the hoses, then remove the drain pump. Re-installation is carried out in the reverse sequence. Make sure the hoses are correctly secured with the hose clamps and the cables are connected correctly.
- Page 63 Replacing the fill valve 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw (phillips screwdriver) and remove the right side panel. . Remove the connection cables to the fill valve (note assignment before removal). 4. Remove hose clamps on the fill valve connections and pull off the hoses. 5. Undo the two screws fixing the fill valve to the housing, then remove the fill valve. Re-installation is carried out in the reverse sequence. Make sure the hoses are correctly secured with the hose clamps and the cables are connected correctly. Replacing the water level unit 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw (phillips screwdriver) and remove the left front panel. . Remove the connection cable to the level unit. 4. Remove hose clamps on the level unit connections and pull off the hoses. 5 Squeeze both sides of the mounting bracket to release it from the slots in the support bracket behind the water level unit, then remove the level unit. Re-installation is carried out in the reverse sequence. Make sure the hose are correctly secured with the hose clamps and the cable is connected correctly.
- Page 64 Replacing the filling chamber 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Undo the screw (phillips screwdriver) and remove the right side panel. . Remove hose clamps on the filling chamber connections and pull off the hoses. 4 Undo the two nuts securing the filling chamber to the face of the tank, then remove the filling chamber. Re-installation is carried out in the reverse sequence. Make sure the hose are correctly secured with the hose clamps.
- Page 65 Removal of the heat exchanger (see following illustration) 1. Take the humidifier out of operation, as described in chapter 7.5. 2. Disconnect the gas supply pipe from the connection on the humidifier and close off the pipe. . Undo the screw(s) (phillips screwdriver) and remove the right side panel(s). 4. On RS units only: Remove the hoses from air intake manifold and air inlet elbows. Then, dis- mount air supply pipe at the air supply connection. 5. Dismount flue gas pipe at the flue gas outlet connection. 6. Undo the screw(s) (phillips screwdriver) and remove the left and the right top panels. 7. Free all cable connections to the components (combustion blower, ignition module, air pressure switch, etc.) of the respective heat exchanger. Important! Note the connector assignment. 8. Undo the coupling of the respective flexible gas pipe and remove the flexible gas pipe. 9. Dismount the burner with the air blower and the gas pressure regulating valve of the respective heat exchanger. 10. Unscrew the nuts and remove the flue gas manifold from the heat exchanger. 11. Unscrew the nuts on the heat exchanger and pull out the heat exchanger from the tank. Re-installation is carried out in the reverse sequence. Replace all seals with new ones. Make sure all cables are connected correctly. DANGER! Danger of explosion! Following maintenance work on the gas system, a leakage test must always be undertaken in accordance with chapter 5.5.2.
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Page 66: Notes On Cleaning Agents
8.4 Notes on cleaning agents The information and specifications relating to the cleaning agents to be used must be strictly observed. In particular: Information on personal protection, environmental protection and all restrictions in the use of cleaning agents. The use of disinfectants is only permitted if they deposit no poisonous residues. In all cases, the components that have been cleaned in this way are to be rinsed with water. CAUTION! Do not use solvents for cleaning purposes, nor aromatized or halogenized hydrocarbons or other aggressive substances. Follow local environmental protection regulations without reservation. 8.5 Resetting the maintenance reminder After completing maintenance work, the maintenance reminder message must be reset via the re- set function in menu mode of the control (see chapter 5.6 in the separate operating instructions for Condair GS control). -
Page 67: Troubleshooting
Troubleshooting 9.1 Important notes on troubleshooting Qualification of personnel Have faults eliminated by adequately qualified and trained personnel only. Malfunctions caused by the electrical installation must be repaired by authorized personnel (e.g. electrician) only. Safety When eliminating faults, the Condair GS must be taken out of operation, as described in chapter 7.5, and prevented from further inadvertent operation. Make sure the power supply to the unit is cut off (test with voltage tester) and that the stop valves in the water and gas supply line are closed. General note Most operational malfunctions are not caused by faulty equipment but rather by improper installa- tion or disregarding of planning guidelines. Therefore, a complete fault diagnosis always involves a thorough examination of the entire system. Often, the steam hose connection has not been properly executed, or the fault lies with the humidity control system. 9.2 Error indication Malfunctions during operation are indicated by a corresponding warning message (operation still pos- sible, red LED flashes) or a fault message (operation not possible any longer, red LED lights) in the display of the operating and control unit. Detailed information thereto can be found in the separate operating instructions for Condair GS control. 9.3 Resetting the error indication To reset the error indication: Disconnect the Condair GS from the mains for approx. 5 seconds, then reconnect again. Note: If the fault has not been eliminated, the error indication reappears after a short while. -
Page 68: Specifications
Specifications 10.1 Technical Data Condair GS Type Steam output room air-dependent kg/h 10…40 10…80 10…120 10…160 10…200 10…240 room air-independent (RS units) kg/h 10…40 10…80 10…120 10…160 10…200 10…240 Energy consumption 6.5 7.0 109.5 146.0 182.5 219.0 Gasous fuel Natural gas (G20, G25, G25.1, G27, GZ50) or Propane gas (G1) Electric connections power supply 20V/50…60Hz/1Phase power consumption 1150 180 1610 power supply fuse 10 A, slow acting... -
Page 69: Flue Gas Specifications
10.2 Flue gas specifications Natural gas G20 Natural gas G25 full load part load full load part load Condair GS 40 energy consumption 6.5 10.5 6.5 10.5 kg/h 0.68 .04 0.87 gas consumption .478 0.8695 4.044 1.0111 exhaust temperature °C exhaust mass flow kg/s 0.015 0.004 0.017 0.0058 -content flue gas pressure exhaust diameter Condair GS 80 energy consumption 10.5 10.5 kg/h 4.72 0.68... - Page 71 © Walter meier (climate International) ltd. 2009, Printed in switzerland technical modifications reserved...
- Page 72 consultIng, sales and servIce: solutions for Indoor climate reg.no. 40002-2 manufacturer: Walter meier (climate International) ltd. talstr. 35-37, P.o. Box, cH-8808 Pfäffikon (switzerland) Phone +41 55 416 61 11, Fax +41 55 416 62 62 www.waltermeier.com, international.climate@waltermeier.com...
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