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2 H (1550) 324-1550 kW ® Floor-standing gas condensing boilers UltraGas Hoval products must be installed and commissioned by ® (125-1550) acc. to EN 15502-1/15502-2-1 are suitable specialists only. These instructions are intended exclu- and licensed for use as heat generators for hot water sively for the specialist.
TABLE OF CONTENTS Important notices System manual ..................................4 General safety instructions ..............................4 Explanation of the symbols ..............................5 1.3.1 Warnings ..................................5 1.3.2 Warning symbols................................5 1.3.3 Information ..................................6 On delivery ...................................6 Guarantee ....................................6 Regulations, standards and directives ..........................7 Technical information Description ..................................8 2.1.1 Function descriptions ................................9 2.1.1.1...
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TABLE OF CONTENTS Electrical connection .................................49 4.6.1 Safety precaution for installation in line with EMC requirements ..................50 4.6.2 Recommended cable cross-sections and maximum permitted cable lengths ..............52 Commissioning Prerequisites for trial operation ............................53 Commissioning procedure ..............................54 Checking the parameter settings ............................54 Switching the heat generator on ............................55 Checking the gas flow pressure ............................55 Functional check of pressure monitoring device......................55...
All instructions relevant to your plant can be found in the If work is carried out by non-expert persons, Hoval system manual - please keep all manuals! In ex- this can result in damage to property and ceptional cases, the instructions can be found with the personal injury.
IMPORTANT NOTICES Explanation of the symbols CAUTION 1.3.1 Warnings Sharp edges If the cladding has not yet been fitted or if DANGER parts of the cladding have been dismantled ... indicates an imminently hazardous situa- and/or the boiler door is open, there is a risk tion which, if not avoided, will result in death of cuts from sharp edges.
IMPORTANT NOTICES On delivery 1.3.3 Information Carry out a visual inspection immediately on receiving the Information: heat generator. If any damage is found, take the neces- Provides important information. sary steps as defined in the delivery contract. The respec- tive risk carrier bears the cost of repairs. Tool: Guarantee Indicates which tool you will need for the next...
IMPORTANT NOTICES Regulations, standards and directives Austria § • ÖNORM EN 12828 Heating systems in buildings - The locally applicable heating system regulations must Design of hot water heating systems be followed when planning, installing and operating the • ÖNORM EN 12831 Energy efficiency of buildings - gas heat generator: Method for calculation of the design heat load •...
TECHNICAl INFORMATION Technical information Description The UltraGas 2 corresponds with the stand- The UltraGas 2 is a low-pollution and energy-saving ® ® ards and guidelines listed in the EU declara- gas condensing boiler with the Ultraclean burner system, tion of conformity. The EU declaration of con- a gas-fired premix burner with combustion air fan.
TECHNICAl INFORMATION 2.1.1 Function descriptions 2.1.1.1 Automatic function device BIC 970 (brief description) The automatic function device BIC 970 of the UltraGas ® is only used in conjunction with the heating control TopTronic E/UltraGas 2, which means many familiar ® ®...
TECHNICAl INFORMATION 2.2.2 UltraGas 2 (125-1550) technical data ® Type (125) (150) (190) (230) • Nominal heat output at 80/60 °C, natural gas 21-114 33-139 35-177 47-219 • Nominal heat output at 50/30 °C, natural gas 25-126 35-151 38-191 51-233 •...
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TECHNICAl INFORMATION Type (300) (350) (400) (500) • Nominal heat output at 80/60 °C, natural gas 54-274 67-315 62-362 71-449 • Nominal heat output at 50/30 °C, natural gas 58-299 70-352 69-399 77-491 • Nominal heat output at 80/60 °C, propane 83-274 115-311 97-361...
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TECHNICAl INFORMATION Type (530) (620) (700) (800) • Nominal heat output at 80/60 °C, natural gas 100-497 125-580 132-653 150-743 • Nominal heat output at 50/30 °C, natural gas 110-533 136-622 146-703 166-804 • Nominal heat output at 80/60 °C, propane 137-489 168-569 174-643...
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TECHNICAl INFORMATION Type (1000) (1100) (1300) (1550) • Nominal heat output at 80/60 °C, natural gas 185-926 203-1038 241-1230 297-1447 • Nominal heat output at 50/30 °C, natural gas 205-999 229-1112 269-1320 324-1550 • Nominal heat output at 80/60 °C, propane 245-926 299-1033 362-1227...
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TECHNICAl INFORMATION Type H (1100) H (1550) • Nominal heat output at 80/60 °C, natural gas 203-1038 297-1447 • Nominal heat output at 50/30 °C, natural gas 229-1112 324-1550 • Nominal heat output at 80/60 °C, propane 299-1033 427-1439 • Nominal heat output at 50/30 °C, propane 316-1112 453-1550 •...
TECHNICAl INFORMATION Dimensions 2.3.1 UltraGas 2 (125-1550) dimensions ® (Dimensions in mm) Heating flow Low-temperature return Gas connection Safety flow (safety valve, air vent) High-temperature return Electrical connection on the left or right Drainage (behind the front door) Flue gas outlet left or right Control panel Condensate drain with siphon and screw connection for plastic pipe...
TECHNICAl INFORMATION 2.3.2 Overall unit dimensions Boiler without cladding and insulation (Dimensions in mm) WARNING • The boiler must only be suspended using the four points marked as the crane sus- pension option in Fig. 02. The hooks on the rear of the boiler must not be used to suspend it.
TECHNICAl INFORMATION 2.3.3 Space requirement (Dimensions in mm) For swinging out the burner, this area must re- main free (see dimension table) If the gas line is routed horizontally to the left, the minimum distance Q must be observed. Cleaning opening UltraGas ®...
TECHNICAl INFORMATION 2.3.3.1 Installation variants with reduced height requirements (Dimensions in mm) UltraGas 2 with masonry base and adjustable feet ® UltraGas ® type H minimum (125,150) 1934 (190,230) 1979 (300-500) 1937 (530-700) 2255 (800-1100) 2276 (1300,1550) 2416 H (1100) 2276 H (1550) 2416...
INSTAllATION Installation Setting up heat generator 3.2.1 Requirements for installation and setting up CAUTION • For overall unit dimensions, see chapter 2.3.2 Sharp edges • For required space, see chapter 2.3.3 If the cladding has not yet been fitted or if •...
INSTAllATION 3.2.2 Set-up of UltraGas 2 (125,150) 6. Raise the boiler with the pallet (e.g. using a lift truck). ® 7. Pre-assemble 3 boiler feet (4) (tighten screws by hand). WARNING 8. Carefully lower the boiler again (danger of tipping over) Tip hazard during set-up - The boiler remains on 3 boiler feet.
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INSTAllATION 3.2.3 Set-up of UltraGas 2 (190-1550) ® UltraGas 2 (800-1550): ® We recommend using at least two people for setting up and fastening the cladding to the boiler. 1. Remove climbing aid (1). 2. If the gas line compensator (2) is supplied loose, screw the gas line compensator (2) tightly onto the gas line, aligning it towards the rear.
INSTAllATION Installing thermal insulation 1. Place the insulation mat (1) around the UltraGas 2 boiler. ® - Start at the front of the boiler. - Make sure that the recesses are seated correctly. 2. Fit tension springs (2) to hold the ends of the insulation mat (1) together. 3.
Mounting cladding UltraGas 2 (800-1550): ® We recommend using at least two peo- ple for setting up and fastening the clad- ding to the boiler. Cladding sections UltraGas 2 (125-1100) in installation sequence ® 1.1/1.2 Cable duct Side wall bottom Terminal plate Electrical box Rear wall bottom...
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10.1 10.2 Cladding sections UltraGas 2 (1300,1550) in installation se- ® quence 1.2 1.1 1.1/1.2 Cable duct 2.1/2.2 Side wall bottom Clamping plate Electrical box Rear wall bottom 6.1/6.2 Rear wall centre Side wall top 8.1/8.2 Rear wall top Blind cover for rear wall top Side wall spacer 10.1/10.2 Cover plate Front top...
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INSTAllATION Detail C Detail A Detail B Fig. 12 1. Set up climbing aid for installation: 4. Mount terminal plate (3) of the electrical box: Adjust the supplied climbing aid to the required length - Position the slots in the terminal plate (3) on the cor- using the extension piece (0a) and set it up.
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INSTAllATION 5. Route all cables (a-h, Fig. 10/Fig. 11) and establish plug-in connections (wiring in accordance with Fig. 10 or Fig. 11). - Cables passing through one of the two cable ducts (1.1/1.2) must be inserted through the openings at the bottom of the terminal plate (3c, Fig.
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INSTAllATION - Position the slots (6b) in the rear wall section (6.2) - In heat generator cascades: on the corresponding screw heads of the rear wall Ensure that the components for the combustion air section (6.1) and then fix the two sections together supply are fitted to the boiler.
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INSTAllATION - UltraGas 2 (1300,1550): 14. Hang the climbing aid on the previously installed wall ® First put on the rear cover plate (10.1), then the bracket (see Fig. 10 and Fig. 11). front cover plate (10.2) so that: 15. Installing the base cladding: - the large tab on the cover plate section points to the front.
INSTAllATION Removing the cladding for mainte- 4. Remove cover plate (4 or 4.1/4.2): - UltraGas 2 (125-1100): ® nance and service work Fig. 26 - UltraGas 2 (1300,1550): ® Fig. 24 1. Removing front cover (1): - Pull front cover away at the top (1a). - Unhook front cover at the bottom (1b).
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INSTAllATION 6. Removing 3-section upper rear wall (6.1/6.2/6.3): 8. Opening the electrical box (8): - Remove blind cover (6.1). - Remove screw (8a). - Remove screws (6a). - Lift the electrical box (8) and fold it out. - Lift the rear wall section (6.2) slightly and pull it away. - Lift the rear wall section (6.3) slightly and pull it away.
INSTAllATION Installation 4.1.1 Room air dependent installation The locally applicable regulations must be complied with. CAUTION Sharp edges 4.1.2 Room air independent installation If the cladding has not yet been fitted or if parts of the cladding have been dismantled In the case of room-air-independent installation with sep- and/or the boiler door is open, there is a risk arate combustion air line to the heat generator (using the...
INSTAllATION Flue gas connection, flue gas line Calculation of the flue gas line dimensions • The cross sections and the maximum lengths are cal- The following directives must be complied culated with reference to software or tables. with regarding the flue gas evacuation: §...
INSTAllATION 4.2.1 Standard values for flue gas line dimensions Standard values for the flue gas line dimensions can be The first 2 m of the flue gas line must be con- found in the following table. figured with the same dimension as the flue gas connector, after which the size of the flue Table with bases for calculation gas system can be selected according to the...
INSTAllATION 4.2.2 Combustion air/flue gas ducting Design variants Combustion air taken from the surrounding environment B23, B23 P Flue gas outlet into the chimney, suction of air from the surrounding environment. End piece of the flue gas outlet above the roof Air intake and flue gas outlet outside in areas with different pressure.
INSTAllATION Condensate drain NOTICE 4.3.1 Condensate drain engineering guidelines Condensate with corrosive effect The condensate should be led from the condensate drip Depending on the sewer system (materials tray of the heat generator to a siphon and from there via used and waste water in the sewer system), a hose or fixed pipework for condensate drainage to the the acid condensate from the heat generator...
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INSTAllATION Before commissioning of the heat generator NOTICE WARNING Flue gas accumulation in the heat Flue gas outlet generator If there is insufficient water in the siphon (the If the condensate cannot drain away, this will level is below the necessary minimum height lead to a condensate build-up in the conden- of the water dam in the siphon), then flue gas sate drip tray.
– condensate pump After installation, before operation of the heat - 0.5 m hose is included with the condensate pump generator, the following must be carried out: purchased at Hoval. • Check condensate flow (no condensate - Hose connection (5) blockage).
- A hose is included with the condensate pump pur- chased at Hoval for the hydraulic connection. 4. Install the neutralisation unit and condensate pump After installation, before operation of the heat in accordance with the corresponding installation and generator, the following must be carried out: operating instructions.
INSTAllATION Gas connection Gas connection Route gas connection straight to the rear. DANGER Poisoning and explosion hazard due to Gas connection leaking gas If the gas line is mounted exposed to stress or installed improperly, gas can escape and there is a risk of poisoning and explosion. •...
INSTAllATION 4.4.1 Venting the gas pipe Construction of a recommended gas connection: Comply with the necessary regulations when venting the gas pipe. § Legend Manual gas shut-off device (gas shut-off valve) 1. Open the gas shut-off valve on the heat generator. 2.
High-temperature return HT • Additional safety fittings (if required by the system (e.g. fan group or calorifier) configuration) Safety-related components available from Hoval as accessories Safety armature set: Low-temperature return LT - Pressure gauge (e.g. underfloor heating)
- Safety temperature limiter UltraGas 2 UltraGas 2 Diaphragm pressure expansion tank Fig. 37 Refer to the Hoval system technology to find Diaphragm pressure expansion tank diagrams of sample applications. An adequately dimensioned diaphragm pressure expan- 17.08.2020 Achtung ! Für die Installation muss das anlagenbezo Verbindungshinweise / Hydr.
Please observe the notes in the engineering Calorifier documents of the responsible Hoval sales If a calorifier is connected, all heating groups must be company with respect to the appropriate hy- provided with a mixer.
Water quality in heating systems Germany and Austria Filling and replacement water, heating water Additional notices • Hoval heat generators are suitable for heating systems without signifi cant oxygen intake (system type I in ac- The following applies: cordance with EN 14868.) •...
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INSTAllATION Switzerland Additional notices Filling and replacement water, heating water • Hoval heat generators are suitable for heating systems The following applies: without signifi cant oxygen intake (system type I in ac- cordance with EN 14868.) • Directive SWKI BT 102-01 “Water quality for building services systems”...
• If frost protection agent is being used, a separate engineering sheet is available from Hoval. ÖNORM H5195, European Standard EN 14868 and VDI Guideline 2035 must be §...
INSTAllATION Electrical connection • A licensed electrical company must install the electrical supply to the equipment. • The connection diagram is located in the electrical box of the heat generator; the cir- cuit diagram is supplied separately. • The country-specific regulations must be adhered to.
INSTAllATION 4.6.1 Safety precaution for installation in line • Measures must be taken in the building and on electri- cal equipment to protect the units against overvoltage with EMC requirements caused by lightning strikes. • The mains connection for the heating system must be •...
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INSTAllATION In the case of star-shaped data bus networks, double To ensure correct electrical installation, unit connec- tion and equipotential bonding (energy supply com- earthing is not permitted. The earthing must be carried out on one side at the star point. pany and building installation), all applicable laws, regulations and standards must be complied with;...
INSTAllATION 4.6.2 Recommended cable cross-sections and maximum permitted cable lengths Line type Cross-section Length Electrical supply of the heat generator • 230 V (UltraGas min. 2.5 mm unlimited m ® (125-1550)) with 16 A fuse • 400 V (UltraGas min. 2.5 mm unlimited m ®...
• Safety valve is installed (system sealed). a heating specialist (only by trained spe- • Heating control is operating (on the electrical mains). cialist personnel or a Hoval customer ser- • The following are filled with water: vice technician). - Heating system •...
COMMISSIONING Commissioning procedure WARNING 1. Performing an installation inspection: Damaged gas valve The combustion air must be filtered if there is If the gas flow pressure is too high, the gas a heavy build-up of building dust. We recom- valve can be damaged. There is a risk of poi- mend using the optionally available connec- soning and explosion.
3. Set the blocking switch on the control panel to “I” in The settings are only allowed to be changed order to release the burner. by a specialist trained by Hoval or a Hoval 4. Set the heating control to the desired basic program customer service technician.
- Set lower value (Q ulation must only be made by a specialist - Check lower value (Q trained by Hoval or by a Hoval customer max. - Repeat the whole procedure until both service technician. values are correct.
- Set upper value (Q max. trained by Hoval or by a Hoval customer ser- - Check lower value (Q vice technician. min. - If the lower value (Q ) is not correct: min.
Changing to a different type of gas • Make sure that all safety devices and covers that were removed are re-installed. Changing to propane only on request. Please contact your Hoval customer service technician. 5.10 Heat generator handed over to the operator...
MAINTENANCE Maintenance CAUTION Sharp edges NOTICE If the cladding has not yet been fitted or if Damage to the system can result from failure parts of the cladding have been dismantled to perform cleaning and maintenance or in- and/or the boiler door is open, there is a risk correct cleaning and maintenance.
MAINTENANCE Bleeding the heating system Replenishing replacement water 1. Open all radiator valves and/or all underfloor heating ÖNORM H5195, European Standard EN 14868 circuits. and VDI Guideline 2035 must be complied with § 2. Heat up the heating system for at least half a day with (see chapter 4.5.2).
MAINTENANCE Information for fire inspector / chimney sweep regarding emission and manual operation settings This chapter is exclusively intended to describe the function of emissions and manual operation settings for the fi ring monitoring technician / chimney sweep. All operating elements are described in the operating instructions. CAUTION Danger of scalding with hot water, since the hot water temperature can exceed the target setpoint temperature.
The heat generator is only allowed to be cleaned and maintained by a licensed spe- Unscrew hexagon nut cialist or Hoval customer service technician. Brace hexagon nut The heat generator must be cleaned and serviced at least once a year.
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MAINTENANCE 9. Check burner cylinder web. Burner cylinder - The burner cylinder must be cleaned if visible con- tamination exists (such as deposits, e.g. builder’s dust). - If the burner cylinder web is damaged or there are cracks in the welds, the burner cylinder must be replaced.
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MAINTENANCE - Fasten the earth wire (Fig. 47) on the burner CAUTION cylinder. - Swivel the burner upwards, with the boiler door Danger of chemical burns from cleansing (Fig. 46) agents. 11. Clean and adjust ignition and ionisation devices. • Wear safety gloves and protective goggles - Sand ignition and ionisation devices with fine sand- when using cleansing agents.
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MAINTENANCE - If deposits on the heating surfaces occur despite of an- 14. Clean condensate drip tray. nual cleaning according to the steps above: - Spray the heating surfaces with chloride-free, phos- NOTICE phoric cleansing agent (e.g. Desoxin) (Fig. 54), allow Flue gas accumulation in the heat to act and flush with a jet of water of a high-pressure generator...
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MAINTENANCE 16. If a neutralisation unit is present, maintain it accord- ing to the manufacturer’s operating instructions: Cleaning opening NOTICE cover Reduction in the neutralisation effect The neutralising agent in the neutralisation unit is subject to degradation. The pH-neu- Cleaning opening tralising effect diminishes over time.
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MAINTENANCE 23. Replace the seal on the gas connection and connect 30. Check seat of the screw connections between pres- the gas connection to gas valves, e.g. using two pipe sure switch B18 and the burner cover: grips. Seal on gas Position 4 connection Position 3...
MAINTENANCE Setting the gas quantity, - Tightness at the intermediate flange (Fig. 63) 33. Carry out flue gas measurement according to chapter measuring the O ) and 5.7. NOx/CO content in the flue gas - If necessary, adjust the setting. - Make a record of the measurement.
MAINTENANCE Servicing motorised combustion air 1. Switch off all heat generators in the heat generator cascade: damper (option) - Set the blocking switch to “0” and disconnect the heat generator from the mains (e.g. main switch, WARNING fuses). Flue gas outlet via open combustion air - Close the gas shut-off valve.
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MAINTENANCE 4. UltraGas 2 (125,150), UltraGas 2 D (250,300): - Spray the oil strongly past the rotor into the lower ® ® Screw the locking lever onto the motorised combus- bearings several times as can be seen in the photo. tion air dampers (Fig.
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MAINTENANCE 9. Install motorised combustion air dampers in the heat 10. Distribute the lubricant optimally in the bearing: generators and connect them electrically: - Energise the heat generator (main switch, fuses) - Mount the motorised combustion air damper on the and set blocking switch to “I”.
MAINTENANCE Renewing fuse Monitoring work before handover to the operator WARNING Before the heat generator is handed over to the operator, all commissioning or maintenance work must have been Electrical installations are only allowed to be completed and the plant checked. carried out by an electrician.
BIC 970 automatic function device parameter list WARNING Changes to the BIC are only allowed to be made by authorised Hoval customer service technicians. The following table is intended solely to provide information for the Hoval customer service technician! 7.1.1 Automatic function device UltraGas ®...
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Description Tree 37390 Heat gen. frost protection OFF Heat gen. sensor °C 37633 Function flue gas sensor Flue gas sensor 0=OFF 1=Flue gas sensor (AGF) 37639 Blocking temperature AGF Flue gas sensor °C 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 37641 Locking temperature AGF Flue gas sensor °C...
APPENDIx Activate screed function NOTICE The activation of the screed function must only be made by a specialist trained by Hoval or by Hoval cus- tomer service technician. Description of function The control module of the TopTronic E contains a functional sequence used for drying out screed fl oors. To start the ®...
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APPENDIx Settings in the TopTronic E control module ® Can only be set in the corresponding user level. Settings under Start screen > Main menu > Service > H-GEN > Heating circuit > Heating circuit 1, 2, 3* > Screen > 04-060 to 04-064.
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COPY FOR PLANT USER Confirmation The user (owner) of the system herewith confi rms that • he has received adequate instruction in the operating and maintenance of the installation, • received and taken note of the operating and maintenance instructions and, where applicable other documents con- cerning the installation and any further components.
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