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Summary of Contents for Airwell PAC HT Series
- Page 1 Engineering Data Manual PAC HT High Temperature Air-to-Water Heat Pumps Models 12-6, 14-7 & 18-9 12.0 to 17.9 kW AN AIRWELL GROUP COMPANY...
- Page 2 Installation examples Single zone system installation (radiators) PAC HT Radiator system ambience thermostat Domestic hot water (DHW) tank Insulated underground hot water pipes Dual zone system installation (radiators and under-floor heating) PAC HT Radiator system room thermostat Low temperature zone room thermostat (under- floor heating) Domestic hot water...
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Page 3: General Characteristics
General Characteristics Introduction Air exchanger This new range of PAC HT air/water high temperature heat pumps offers the Treated with a hydrophilic coating to assist condensed water drainage. special feature of producing hot water at 65 °C at outdoor temperatures down to -20 °C, while guaranteeing a high COP . -
Page 4: Standard Equipment
General Characteristics (continued) Standard equipment Options and accessories The PAC HT is supplied with the following standard equipment : Accessories available for fitting on site : Electrical box including electrical safety devices, circuit breakers, fuses. Vibration absorbent pads. Electronic controller and its keypad screen. - Page 5 Operating Diagram - Two-stage Cycle with Economiser and Partial Injection Injection expansion valve Main expansion valve High pressure Low pressure Medium pressure COND : Condenser ECO : Economiser LP : Low pressure HP : High pressure Operating cycle Compressor operation The PAC HT operates on a two-stage compression cycle.
- Page 6 General Hydraulic Layout for a Type 1 (*) Installation Stop valve Expansion tank Buffer tank (optional) In-line heater Filter or sludge trap Bleed 3-way valve - Domestic hot water Safety valve Domestic hot water tank HW : Hot Water Safety devices CW : Cold Water Recycling circulating pump (optional) Installation components not supplied...
- Page 7 General Hydraulic Layout for a Type 2 (*) Installation Stop valve Flow regulating valve Buffer tank (optional) Expansion tank Filter or sludge trap In-line heater Relief valve Bleed 3-way valve - Domestic hot water Safety valve Domestic hot water tank HW : Hot Water Safety devices CW : Cold Water...
- Page 8 General Hydraulic Layout for a Type 3 (*) Installation Stop valve Flow regulating valve Filter or sludge trap Expansion tank Relief valve In-line heater 3-way valve - Domestic hot water Bleed Domestic hot water tank Safety valve Safety devices HW : Hot Water Recycling circulating pump (optional) CW : Cold Water Circulation pump...
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Page 9: Operating Limits
Operating Limits STAGE SINGLE STAGE Two stage – min. entering water T. Two stage – max. leaving water T. Single stage – max. leaving water T. Outdoor temperature (°C) Physical Data PAC HT MODELS 12-6 14-7 18-9 REFRIGERANT Type R407C COMPRESSORS Type 2 Scroll compressors... -
Page 10: Performance Data
Performance Data PAC HT models 12-6 14-7 18-9 Water condition 30/35 °C Heating capacity single-compressor Power input 3.84 4.00 4.12 Water condition 40/45 °C Heating capacity single-compressor outdoor air condition +7 °C / +6 °C WB Power input 3.14 3.23 3.36 Water condition 40/50 °C Heating capacity dual-compressor... - Page 11 Performance Curves - PAC HT 12-6 T out=50°C T out=55°C T out=60°C T out=65°C 2-stage operating mode T out=35°C T out=45°C Small compressor operating mode T out=50°C T out=55°C T out=60°C T out=65°C T out=60°C T out=55°C T out=50°C T out=60°C T out=55°C T out=50°C T out=45°C...
- Page 12 Performance Curves - PAC HT 14-7 T out=50°C T out=55°C T out=60°C T out=65°C 2 stage operating mode T out=35°C T out=45°C T out=50°C Small compressor operating mode T out=55°C T out=60°C T out=65°C T out=60°C T out=55°C T out=50°C T out=60°C T out=55°C T out=50°C...
- Page 13 Performance Curves - PAC HT 18-9 T out=50°C T out=55°C T out=60°C 2-stage operating mode T out=65°C T out=35°C T out=45°C Small compressor operating mode T out=50°C T out=55°C T out=60°C T out=65°C T out=60°C T out=55°C T out=50°C T out=60°C T out=55°C T out=50°C T out=45°C...
- Page 14 Pressure Drop Curves Domestic hot water tank (optional) 1000 1100 1200 1300 1400 1500 1600 1700 1800 Water flow (l/h) Domestic hot water tank 3-way valve (optional) 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 1000 1100 1200 1300 1400 1500 1600...
- Page 15 Circulation Pump Available Pressure/Water Flow Curves PAC HT 12-6 Min. flow Nominal Max. flow flow HS (3) MS (2) LS (1) 1000 1100 1200 1300 1400 1500 1600 1700 Water flow [l/h] PAC HT 14-7 Nominal Max. flow Min. flow flow HS (3) MS (2)
- Page 16 Circulation Pump Available Pressure/Water Flow Curves (continued) PAC HT 18-9 Nominal Max. flow Min. flow flow HS (3) MS (2) LS (1) 1000 1100 1200 1300 1400 1500 1600 1700 Water flow [l/h] Circulation Pump Power Input PAC HT - All sizes HS (3) MS (2) LS (1)
- Page 17 Dimensions PAC HT 1150 1192.60 1236.60 Electrical power supply Inlet water 1" gas female Outlet water 1" gas female Display Main switch Water pressure gauge High pressure tap Low pressure tap Remote control Anti-vibrations mounts...
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Page 18: Minimum Clearances
Minimum Clearances unit Domestic hot water tank (optional) 140 litre buffer tank (optional) Water inlet Water inlet... - Page 19 Notes...
- Page 20 Fax +33 (0) 01 39 44 65 17 Fax +34 91 710 91 96 www.airwell.fr www.airwell.it www.airwell.de www.airwell-iberica.es Airwell Group Airwell Group (Headquarter) 1bis, Avenue du 8 mai 1945 Saint Quentin en Yvelines 78284 GUYANCOURT France www.airwell.com AN AIRWELL GROUP COMPANY...
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