Grant QR Range User Manual

1 INTRODUCTION 4
1.1 General 4
1.2 Installation requirements 4
1.3 Water supply requirements 4
1.4 Location 4
1.5 Storage and handling 4
1.6 About your cylinder 4
1.7 Primary circuit pipework 4
connections
1.8 Secondary circuit pipework 5
connections
1.9 Taps and ttings 5
1.10 Hard water scaling 5
1.11 Insulation 5
1.12 Health and Safety 5
2 TECHNICAL DATA 6
2.1 Cylinder technical data 6
2.2 Product contents 7
2.3 Dimensions 8
2.4 Cylinder components 9
3 PRIMARY CIRCUIT INSTALLATION 10
3.1 Grant QR integrated indirect heat 10
pump cylinder
3.2 Primary connections 10
3.3 Hard water areas 11
3.4 The 2-Port valve 11
3.5 Primary circuit expansion vessel 11
3.6 Automatic system bypass 11
3.7 Fill & ush valve 11
4 SECONDARY CIRCUIT INSTALLATION 12
4.1 General 12
4.2 Cold water inlet manifold 12
4.3 Installation 12
4.4 Secondary circuit expansion vessel 13
4.5 Temperature and pressure relief 13
valve
4.6 Hot water supply 13
4.7 Prevention of scalding 13
4.8 Secondary return 13
4.9 Tundish 14
4.10 Discharge pipe 14
4.11 Discharge pipe sizing 14
4.12 Worked example 14
4.13 Discharge pipe arrangement 15
5 ELECTRICAL 16
5.1 Immersion heater 16
5.2 Immersion heater wiring instructions 16
5.3 Immersion heater safety cut-out 16
5.4 Digital dual thermostat 17
5.5 2-port valves 17
5.6 Cylinder wiring 17
5.7 Greenbrook T205-C timer 17
5.8 Grant EP001 wiring centre 17
5.9 Wiring diagrams 18
Contents Page 3
6 COMMISSIONING, DRAINING DOWN 20
AND SAFETY
6.1 Filling the cylinder 20
6.2 Draining down 20
6.3 Immersion heater safety cut-out 20
6.4 Cold water discharge from tundish 21
6.5 Hot water discharge from tundish 21
6.6 Potable hot water expansion vessel 21
6.7 Fill & ush valve 21
6.8 Balancing the primary circuit 22
6.9 Customer handover 22
7 MAINTENANCE 23
7.1 Servicing and maintenance 23
7.2 Inlet manifold assembly 23
7.3 Expansion relief valve cartridge 23
7.4 Expansion vessel servicing 24
8 FAULT FINDING 25
8.1 Intermittent water discharge 25
8.2 Constant water discharge 25
8.3 No ow from hot water taps 26
8.4 Cold water ow from hot water taps 26
8.5 Excessive hot water from taps 27
9 SPARE PARTS 28
10 PRODUCT FICHE 29
11 END OF LIFE INFORMATION 29
12 USER INSTRUCTIONS 30
13 GUARANTEE 31
A DIGITAL DUAL THERMOSTAT 33
B GREENBROOK T205-C FUSED TIMER 36
SPUR SWITCH
C INSTALLATION, COMMISSIONING AND 39
SERVICE RECORD LOG BOOK
NOTES 43
CONTENTS

Grant QR Range Specifications

General

Brand	Grant
Model	QR Range
Category	Heat Pump
Language	English