
Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si
Page 4 of 28
ST0109 – C 05/09
WATER
1 Contents
0 OVERALL VIEW 2
1 CONTENTS 4
2 BEFORE YOU START 5
G
ENERAL 5
C
OMPETENCE 5
H
EALTH AND SAFETY 5
R
ISK ASSESSMENT 6
3 SCOPE OF DELIVERY 6
4 PRODUCT FEATURES AND DESCRIPTIONS 7
5 INSTALLATION 9
5.1
GENERAL ADVICE 9
5.2
SITING CONSIDERATIONS 10
5.3
COLD WATER SUPPLY AND DISCHARGE PIPE WORK 10
5.4
HOT WATER OUTLET 12
5.5
IMMERSION HEATER 12
5.6
INDIRECT HEATING LOOP 13
5.7
SOLAR LOOP 14
5.8
SECONDARY RETURN 15
5.10
INSTALLATION EXPANSION VESSEL 15
5.11
WIRING SCHEMATIC AUXILIARY LOOP 16
5.12
WIRING SCHEMATIC SOLAR LOOP 19
5.13
SOLAR SENSOR INSTALLATION 19
6 COMMISSIONING 21
6.1
SCXN … D/I RANGE 21
6.2
SCXN … SD/SI RANGE 21
7 OPERATION 22
7.1
WATER TEMPERATURE DIRECT ELECTRIC HEATING 22
7.2
WATER TEMPERATURE AUXILIARY HEATING 23
8 MAINTENANCE 23
9 TROUBLESHOOTING 24
10 TECHNICAL DATA 25
10.1
SCXN … D/I 25
10.2
SCXN … SD/SI 26
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