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HP Installatio
n and User Instructions R00918
-10 09/15
Page
5
Contents
Contents
0 OVERALL VIEW ...........................................................................................3
CONTENTS .......................................................................................................5
1 INTRODUCTION ........................................................................................ 10
2 SCOPE OF DELIVERY ................................................................................. 10
3 PRE-INSTALLATION ADVICE ....................................................................... 13
3.1 RISK ASSESSMENT ..................................................................................... 13
3.2 SITING CONSIDERATIONS ............................................................................. 13
3.3 COLD WATER SUPPLY .................................................................................. 14
3.4 BUILDING REGULATION G3 DISCHARGE REQUIREMENTS ......................................... 15
3.4.1 Discharge pipe D2 ........................................................................ 16
3.4.2 Worked example .......................................................................... 17
3.4.3 Termination of discharge pipe ........................................................ 18
3.5 LIMITATIONS ............................................................................................ 19
4 INSTALLATION .......................................................................................... 19
4.1 COLD WATER INLET WITH INLET CONTROL GROUP ............................................... 19
4.1.1 Correctly site the cylinder .............................................................. 19
4.1.2 Install the inlet group .................................................................... 19
4.1.3 Expansion vessel .......................................................................... 19
4.1.4 Balanced cold water supply ............................................................ 20
4.1.5 Drain valve .................................................................................. 20
4.2 HOT WATER OUTLET .................................................................................. 20
4.2.1 Thermostatic mixing valve ............................................................. 20
4.2.2 Pipe insulation .............................................................................. 20
4.3 DISCHARGE PIPES FROM SAFETY DEVICES .......................................................... 20
4.3.1 Discharge pipe D1 ........................................................................ 20
4.3.2 Discharge pipe D2 ........................................................................ 21
4.3.3 Tundish ....................................................................................... 21
4.4 IMMERSION HEATER.................................................................................... 22
4.5 COIL FLOW CONNECTIONS ............................................................................ 22
4.6 COIL RETURN CONNECTIONS ......................................................................... 22
4.7 THERMOSTAT CONNECTION AND INSTALLATION OF THE HEAT PUMP DHW TEMPERATURE
SENSOR .................................................................................................. 23
4.7.1 Heat Pump and Buffer Cylinder Schematic ....................................... 24
4.7.2 Connection of the sensor ............................................................... 25
4.8 CONNECTION OF SECONDARY RETURN .............................................................. 28
5 COMMISSIONING ...................................................................................... 29
6 MAINTENANCE .......................................................................................... 30
7 SPARE PARTS ........................................................................................... 32
8 TECHNICAL INFORMATION AND PRODUCT FICHE .......................................... 33
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