Related Manuals for Lennox eNeRGy Series
Summary of Contents for Lennox eNeRGy Series
- Page 1 eNeRGy High efficiency packaged air treatment unit Installation, Operating and Maintenance eNeRGy-IOM-2020.12-EN...
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Page 3: Table Of Contents
TABLE OF CONTENT INSTALLATION, OPERATING & MAINTENANCE MANUAL Ref : eNeRGy-IOM-2020.12-EN INTRODUCTION ....................................6 ..................................6 ANGE DESCRIPTION ..................................8 AFETY DEFINITION TRANSPORT & HANDLING ................................12 ................................. 12 IMENSIONS AND WEIGHTS ..............................14 ANDATORY HANDLING DEVICES ..................................15 IFTING THE UNIT INSTALLATION .................................... - Page 4 ELECTRICAL PREHEATER ................................. 39 GAS BURNER ....................................39 MAINTENANCE DIAGNOSTIC ................................39 WARRANTY ....................................39 MAINTENANCE PLAN ..................................39 Original version is the English one. Other versions are translations. • • eNeRGy-IOM-2020.12-EN...
- Page 5 • • eNeRGy-IOM-2020.11-EN...
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Page 6: Introduction
All the technical and technological information contained in this manual, including any drawing and technical descriptions provided by us, remain the property of LENNOX and must not be used (except in operation of this product), reproduced, issued to or made available to third parties without the prior written agreement of LENNOX. - Page 7 WARNING - All the technical and technological information contained in this manual, including any drawing and technical descriptions provided by us, remain the property of LENNOX and must not be utilised (except in operation of this product),reproduced, issued to or made available to third parties without the prior written agreement of LENNOX. The technical information and specifications contained in this manual are for reference only.
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Page 8: Safety Definition
SAFETY The safety information contained in this manual is provided as a guide for the safe handling of this installation. LENNOX does not vouch for the completeness of this information and can therefore not accept liability for any possible omissions. - Page 9 INTRODUCTION Labels The rooftop may be marked with the following warning labels to alert to potential hazards (on or near the potentially hazardous part). The rooftop may include the following labels High temperatures Electrical Voltage Rotating parts Sharp parts Wear of PPE (Personal Warning A2L: slightly flammable Don’t walk...
- Page 10 INTRODUCTION For units covered by the Pressure Equipment Directive (see EU Declaration of Conformity). Warning: Attention: The high-pressure safety switches are essential elements which guarantee the system remains within the admissible operating limits. Before switching on the installation, always ensure all electrical connections are correct on these elements which are used to isolate the electrical power supply to the compressor(s) they protect.
- Page 11 INTRODUCTION Replacing components, equipment and piping: • Replacement of components shall be carried out using spare parts, or using parts approved by LENNOX. • Only the refrigerant shown on the manufacturer’s nameplate shall be used, to the exclusion of all other products (refrigerant blends, hydrocarbons, etc.).
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Page 12: Transport & Handling
TRANSPORT & HANDLING Dimensions and weights Dimensions (mm) 3138 3138 3138 4601 4601 4601 4601 4601 4601 4601 4601 4601 4601 Base unit (frame only without air hood) Depends on configuration and options (between 450mm and 612mm). Refer to drawing. + Air hood additional length (fresh or exhaust) + Vertical extraction EC plug fan + Rotary wheel on vertical exhaust air... - Page 13 TRANSPORT & HANDLING Dimensions (mm) 4601 4601 4601 5202 4601 4601 4601 5202 5202 5202 5202 Base unit (frame only without air hood) Depends on configuration and options (between 450mm and 612mm). Refer to drawing. + Air hood additional length (fresh or exhaust) + Vertical extraction EC plug fan + Rotary wheel on vertical exhaust air + Thermodynamic heat recovery on vertical...
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Page 14: Mandatory Handling Devices
TRANSPORT & HANDLING Mandatory handling devices Handling slings to guide the unit toward the roof curb Vacuum lifting beam to position the unit • • eNeRGy-IOM-2020.12-EN... -
Page 15: Lifting The Unit
TRANSPORT & HANDLING Lifting the unit Handling of the unit with a forklift is absolutely forbidden Only lifting the unit with a crane is permitted Lifting shackles dimensions Use lifting shackles on each lifting lug located on the base frame of the unit (4 or 6 depending on the unit configuration). Maximum diameter of the shackle ring shaft = 20 mm. - Page 16 TRANSPORT & HANDLING • In case of a unit with 4 points, see picture below : • In case of a unit with 6 points, see picture below. The use of a chain hoist is mandatory. • • eNeRGy-IOM-2020.12-EN...
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Page 17: Installation
INSTALLATION Minimum clearance around the unit installation Figures below show the required clearances and service access around the unit. Please take care that the clearances depend on the unit size (Units above 125kW need more clearance for the outdoor coils service). NOTE: Ensure the fresh air inlet does not face prevailing wind direction Units below 125kW Units above 125kW... -
Page 18: Rating Plate
If the product is damaged, exact details must be confirmed in writing by registered post to the shipping company within 48 hours of delivery (working days). A copy of the letter must be addressed to LENNOX and the supplier or distributor for information purposes. - Page 19 DELIVERY CHECKS The lockers can also be adjusted in vertical position in order to facilitate the opening/closing of all panels once the unit is definitively installed on its final position. A freedom of +/-5 mm is given to all lockers. It’s recommended to adjust the lockers position in case of difficulty by opening/closing a panel.
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Page 20: Condensate Drains
DELIVERY CHECKS Condensate drains The condensate drains are not assembled when delivered and are stored in the electrical panel with their clamping collars. To assemble them, insert them on the condensate tray outlets and use a screwdriver to tighten the collars. The drains must be installed in vertical position. - Page 21 DELIVERY CHECKS The surface must support the unit base frame which is composed of two parallel rails: The surface must support continuously the entire area of these 2 rails (no rubber pad, no spring, no block…). See bottom view of the unit: In case of installing the unit on dedicated structure (for example a specific metallic frame structure), the structure must be compliant with the unit base frame design and dimensions (width is the same for all units;...
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Page 22: Connections
DELIVERY CHECKS • Avoid installing two units side by side or close to each other as this may restrict the airflow to the condensers, and could limit the access for maintenance purposes. Before installing a packaged rooftop unit it is important to understand: •... -
Page 23: Installation On A Roofcurb
INSTALLATION ON A ROOFCURB Adjustable / Non-adjustable roofcurb Example of non-adjustable roofcurb without condensing unit Example of adjustable roofcurb without condensing unit Example of non-adjustable roofcurb with condensing unit Example of adjustable roofcurb with condensing unit WARNING : all the roofcurb must be strongly secured to the ground The contact to the ground must be realized with the entire contact area of the roofcurb (no discontinuous contact). -
Page 24: Levelling Adjustable Roofcurbs
INSTALLATION ON A ROOFCURB CAUTION: • Installation of the unit and accessibility must be compliant with the local regulations. Ensure that all access equipment allow maintenance operation in safety (electrical cabinet, main switch, panels, filter, refrigerant circuit…); this recommendation is valid for installations in general and in particular for return and curbs. -
Page 25: Curbing And Flashing
INSTALLATION ON A ROOFCURB Curbing and flashing Check that the insulation is continuous, counter flash and seal around the frame as shown. CAUTION: To be effective, the upstream must end below the drop edge. Where pipes and electrical conduits extend through the roof, flashing must conform to local codes of practice Before installing the equipment, make sure that seals are not damaged and check that the unit is secured to the mounting frame. -
Page 26: Positioning The Rooftop On Roofcurb
INSTALLATION ON A ROOFCURB Positioning the rooftop on roofcurb IMPORTANT note: Prior to put the machine, make sure to put a polyethylene gasket on the roofcurb upper flange side (must be delivered in the roofcurb package). This gasket must be put only on the external perimeter of the roofcurb and around the supply and return section During the installation of the unit on the roofcurb, it’s important to keep the unit in horizontal position or with the treatment box slightly downwards. -
Page 27: Duct Connections
DUCT CONNECTIONS Recommendations for ducts connections Some rules must be respected for the connections between ducts and unit. Whatever the supply configuration is, respect a minimal duct’s length (D) of 2m before any elbow or any duct’s diameter change Example of vertical supply: >2m <2m This rule also applies to horizontal supply configurations. - Page 28 DUCT CONNECTIONS Ducting connection details The supply and return air ducts can be secured to the flanges at the bottom of the roofcurb. Any ducting weight above 100 kg must be fixed independently to other building frames. Distance for duct connection: 150 mm •...
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Page 29: Main Switch Connection
ELECTRICAL CONNECTIONS Main Switch Connection The details of the electrical connection are explained in the table below, depending on the main switch type (main switch type is given in the electrical file delivered with the unit): Bar or Terminal Type Reference Torque Cable max... -
Page 30: Sensor Mounting
SENSOR MOUNTING CO2 or Advanced control pack Sensor The device can be installed in dry surroundings (IP20) by screws on the wall surface or on the standard flush mounting box. The recommended installation height is 150…180 cm. The device position should be selected carefully. All the error factors that can affect to the measurements should be eliminated as well as possible. -
Page 31: Heat Recovery
HEAT RECOVERY General description Heat recovery modules have following interests: • In winter season and heating mode, the heat in the extract air is exchanged with the fresh air; • Conversely, in summer season and cooling mode, the heat of the fresh air is transferred to the extract air. There are 2 types of heat recovery modules integrated in the unit (as option): - Recovery of the heat from the extracted air through a Rotary Wheel. -
Page 32: Rotary Wheel
HEAT RECOVERY Rotary wheel Vertical return Horizontal return Thermodynamic heat recovery module (TRMO) Frigorific components access: Compressors are located in the dedicated recovery module Vertical return Horizontal return • • eNeRGy-IOM-2020.12-EN... -
Page 33: Commissioning
COMMISSIONING WARNING: all the components must be installed by a qualified engineer Operating limits Prior to any operation, please check the operation limits of the unit. These tables will give you all necessary information concerning the operating envelop of the unit. WARNING: It is very important ensure the units operate well inside these envelopes. - Page 34 COMMISSIONING Fix Speed Compressors Envelopes in °C Cooling mode operating limits given for steady state running condition with noted temperature condition Max. outdoor air temperature at indoor air temp. 27°C DB / 19°C WB Max. outdoor air temperature at Min indoor air temp.DB / 47%HR Max outdoor air temperature with unloading 49,5 51,5 51,5 52,5 49,5 49,5...
- Page 35 COMMISSIONING Option Variable Speed Compressors Envelopes in °C Cooling mode operating limits given for steady state running condition with noted temperature condition Max. outdoor air temperature at indoor air temp. 27°C DB / 19°C WB Max. outdoor air temperature at Min indoor air temp.DB / 47%HR Max outdoor air temperature with unloading Min.
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Page 36: Casing Condensation Risk
COMMISSIONING Casing Condensation Risk Depending of the ambient outdoor conditions and the supply air performance of the unit, some condensation on the outside skin of the unit casing may appear. This outside condensation doesn’t affect the good operation of the unit, but can only affect the visual aspect of the unit. -
Page 37: Before Turning On The Power
R410A Scroll The oil type depends on compressor model that depends on the unit size. Use only oil approved and recommended by Lennox Powering the unit Power up the unit by closing the isolator switch. The fans and compressors direction of rotation is checked during the end of line test. They should therefore all turn in either the right or wrong direction. -
Page 38: Climatic Configuration
COMMISSIONING CLIMATIC configuration Settings 1. Supply Air-flow adjustment (depending on customer requirements) a. 3333 = nominal air flow / pressure b. 3334 = reduced air flow / pressure c. 3332 = Manual/Automatic d. 3331 = Nominal/DeadZone/PartLoad/Pressure 2. Exhaust Air-flow adjustment (optional) a. - Page 39 COMMISSIONING Check: 1. Air-flow Vs Damper a. Test B.Nom100% : COMMISSIONING i. adjust the blower speed % (3333) to get the required air-flow ii. adjust the exhaust speed % (3864) to get the required air-flow b. Test B.Nom0%: i. adjust the damper compensation (3335) to maintain the required air-flow even with damper fully closed ii.
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Page 40: Fresh/Exhaust Air Hoods
FRESH/EXHAUST AIR HOODS Installing The fresh/exhaust air hoods have to be opened and secured during commissioning. The 3 parts of the air hood have to be assembled thanks to M5 screws delivered in the spare part box. Check the proper position of the black seal on the top of the hood cover. Wind direction The prevailing wind has to be taken into account while choosing the machine position on the building roof. - Page 41 Replace the dirty filters by clean ones (respect the airflow direction). Warning: it’s mandatory to use only filters supplied by Lennox. Only these filters are adapted to the unit, and are designed to ensure the requested filtration quality and the correct air pressure drop. Otherwise you may affect the filtration quality and/or the pressure drop, with a risk of clogging the unit and/or risk on performance of the unit.
- Page 42 Vertical return Warning: it’s mandatory to use only filters supplied by Lennox. Only these filters are adapted to the unit, and are designed to ensure the requested filtration quality and the correct air pressure drop. Otherwise you may affect the filtration quality and/or the pressure drop, with a risk of clogging the unit and/or risk on performance of the unit.
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Page 43: Refrigerant Circuit
REFRIGERANT CIRCUIT Generic refrigerant sketch Depending on the unit size, the number of compressors can change (Single or Tandem), the number of filter dryer can change (1 or 2 in parallel), the liquid receiver can be present or not. Some connection valve (Schrader type) are available to load/unload the circuit. UNITS E014AH055FM2M E014AH065FM2M... - Page 44 REFRIGERANT CIRCUIT Preheating of the crankcase heaters It’s important to avoid starting the compressors without preheating of the crankcase heaters. WARNING: In case of extended shutdown of the unit (> 6 hours), it is mandatory to power on the unit 8 hours minimum before to start the compressors equipped with crankcase heaters.
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Page 45: Hot And Cold Water Coils
HOT AND COLD WATER COILS Hot (and cold) water coils The hot (and cold) water coil is fitted with a three way proportional valve. Two spanners must be used to tighten the connections. One spanner must maintain the valve body when connecting the pipe. Failure to do so may damage the pipes joints and invalidates the warranty. -
Page 46: Recovery Water Coil
RECOVERY WATER COIL eRecovery eRecovery water coil is delivered with 3 ways valve included It is placed just before the standard coil of the unit. The freeze protection is made via fresh damper safeties nevertheless a full freezing protection has to be done using glycol. Water pipes connection Water pipes of the hot (and cold) water coil &... -
Page 47: Electrical Heater
ELECTRICAL HEATER WARNING: electrical heater is connected to main power – risk of electrical shock – switch off the unit prior GAS BURNER to open this section The electrical heaters are placed after the coil. It is protected as standard against overheat via a high temperature overload protection. There are three sizes available for each size of unit: S: Standard heat M: Medium heat... -
Page 48: Electrical Preheater
ELECTRICAL PREHEATER Electrical preheater GAS BURNER WARNING: electrical pre-heater is connected to main power – risk of electrical Shock – switch off the unit prior to open this section The electrical preheaters are placed before the coil. Pre-heater is running only with high fresh air rate under low outdoor ambient temperature (see setpoint in control section). It is protected as standard, against overheat via a high temperature overload protection set at 98°C. - Page 49 GAS BURNER Preliminary checks before start-up GAS BURNER Note: Any work on the gas system must be carried out by qualified personnel. This unit must be installed in accordance with local safety codes and regulations and can only be used in planed installation conditions for outdoor.
- Page 50 GAS BURNER Product range GAS BURNER Unit Description Model Capacity Standard PCH 80 16-82 Kw E14-E19 High PCH 105 18-100 Kw Standard PCH 105 18-100 Kw E22-E27 High PCH 210 18-200 Kw PCH080 PCH105 PCH210 MODEL Chimney loss -burner ON (hi) Chimney loss -burner OFF (hi) <0,1 <0,1...
- Page 51 GAS BURNER General introduction of the PCH • Premix burner (venturi, gas fan, pilot group, head) gas valve GAS BURNER • Electronic controls with display • Combustion chamber in stainless steel AISI 430 (AISI 441 in the next future) • Exchanger bundle in stainless steel AISI 441 •...
- Page 52 GAS BURNER Connections GAS BURNER • 1 or 2 gas Supply modules • Single-phase power supply 230Vac with neutral • ON/OFF: ok signal to ALL the PCH connected; safety devices must be connected in series to this (fire dampers, fan control, temperature alarms...) in order to protect the system by stopping the burner.
- Page 53 GAS BURNER It is strictly prohibited to supply gas to the circuit with pressure higher than 60mbar. Such pressures could cause the valve to break. If pressure are higher than 60mbar, a pressure reducer must be installed at least 10 m away and no pressure stabiliser must be fitted between the pressure reducer and the heater, but leaving the gas filter.
- Page 54 GAS BURNER Starting for the first time The PCH heater unit is supplied with settings entered and tested for the gas specified on the nameplate. Before turning on the PCH unit, check the following: GAS BURNER • Make sure the gas in the mains corresponds to that for which the PCH is controlled; •...
- Page 55 GAS BURNER Interface panel Status: rdy the unit is waiting for the ON control and/or the heat demand from the room thermostat (ready GAS BURNER - no flame) ON burner flame or ignition OFF unit off by a command from the display panel, any heat demands will be ignored Fxx Fault detected.
- Page 56 GAS BURNER See below the relation between signal from Climatic and PCH GAS BURNER v signal from CLIMATIC CLIMATIC capacity factor 1st gas burner 2nd gas burner Third level menus • PAR to read and set parameters for the burner and for the configuration of operation •...
- Page 57 GAS BURNER List of faults GAS BURNER To reset an alarm trip, press simultaneously both arrow keys during a few second • • eNeRGy-IOM-2020.11-EN...
- Page 58 GAS BURNER Maintenance operations To keep the machine in efficient condition and guarantee a long lifetime of the heater, it is advisable to run some inspections every year, before turning it on for the season: MAINTENANCE DIAGNOSTICGAS BURNER 1. check the status of the start-up electrodes, detection electrodes and pilot flame; 2.
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Page 59: Maintenance Diagnostic
MAINTENANCE DIAGNOSTIC REFRIGERATION MAINTENANCE DIAGNOSTIC FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION Measure the superheat and sub-cooling Good if 5°C<SC<10°C and 5°C<SH<10°C Bad if Refrigerant charge too low SC>10°C and SH too low Check superheat adjustment and charge unit (a leak check must be carried out) In Heat Pump Mode the temperature difference between T outdoor and Tevap. - Page 60 MAINTENANCE DIAGNOSTIC REFRIGERATION FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION MAINTENANCE DIAGNOSTIC Heat pump mode: Check the filter before the indoor coil measure and estimate the airflow rate increase the Incorrect airflow rates speed of the fan Cooling mode: Check the condenser fan Summer operation Several hours after the unit has stopped, check Moisture or contaminants in the system...
- Page 61 MAINTENANCE DIAGNOSTIC INDOOR FAN BLOWER MAINTENANCE DIAGNOSTIC FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION Reduce the rotation speed of the fan Pressure drop in the ducting installation too Measure and estimate the airflow and pressure High amps on action Fan motor low.
- Page 62 MAINTENANCE DIAGNOSTIC WATER INFILTRATION FAULT POSSIBLE CAUSE AND SYMPTOMS SOLUTION WARRANTYMAINTENANCE DIAGNOSTIC Cooling mode: Water carried away from the coil Check the air flow rate and reduce it if because of excessive airflow and speed necessary on the coil. Low air pressure in the compartment Water found in the Check filter due to a high airflow rate or a high...
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Page 63: Warranty
The above warranty is liable if the start-up and periodic maintenance agreement is contracted by a Lennox company or any company accredited by Lennox and if the coils are subject to a visual inspection every other week. In case of appearance of salt flower a hard treatment should be carried. - Page 64 WARRANTY Lifetime of the equipment MAINTENANCE PLANWARRANTY The refrigerating system is designed for a lifetime of at least 10 years if the safety and maintenance instructions are strictly respected. The lifetime of the equipment may be renewed if the periodic requalification certificate is validated by the expert (authorized body or DREAL in France (Directions Régionales de l'Environnement, de l'Aménagement et du Logement) Disposal of the equipment Equipment shut-down and recuperation of oil and coolant must be carried out by qualified personnel conform to the...
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Page 65: Maintenance Plan
It is recommended to keep a minimum stock of common replacement parts in order to be able to carry out regular maintenance operations (i.e. filters). You can contact your local Lennox representative which can assist you in establishing a parts list for each type of equipment. - Page 66 Replace filters with new ones if disposable. Vacuum clean or blow the dirt. Wash and dry carefully. Replace Clean or replace filters: filter if necessary by an original Lennox filter. • Disposable, or metal Blocked filter will reduce the performance of the unit.
- Page 67 MAINTENANCE PLAN Task Operating mode Monthly Half Quarterly MAINTENANCE PLAN Yearly Increase room set-point 10°C above the actual room Check three-way valve on temperature. Check operation of the piston. It must HWC (If applicable) move away from the valve head. Reset the control. Check the position of the Check the well fixation of the crankcase heaters, if it is crankcase heaters (around...
- Page 68 MAINTENANCE PLAN Task Operating mode Monthly Half Quarterly MAINTENANCE PLAN Yearly Check all fixings and transmission. Stop the unit using the control. The fresh air damper must close. Start the Check economizer unit, the fresh air damper should open. actuator operation Make a forced opening and closure of the motorized dampers.
- Page 69 MAINTENANCE PLAN Task Operating mode Monthly Half Quarterly MAINTENANCE PLAN Yearly Gas supply pressures Refer to Gas burner section in the IOM for details / connections checks Check the gas regulation Refer to Gas burner section in the IOM for details valve settings Check gas burner safety Refer to Gas burner section in the IOM for details...
- Page 70 Due to LENNOX EMEA ongoing commitment to quality, the specifications, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury. Installation and service must be performed by a qualified installer and servicing agency.