Layout & Components - Worcester GREENSTAR 25Si Instruction Manual

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 25Si/30Si
8 716 115 165a (06/2008)
LAYOUT & COMPONENTS
The diagram opposite shows the controls in the
servicing position and excludes the outer case.
1 AIR / GAS MANIFOLD
2 SENSOR - BOILER FLOW
3 IGNITION AND FLAME SENSE ELECTRODES
4 OVERHEAT THERMOSTAT
5 RETAINING BRACKET
6 EXPANSION VESSEL
7 REMOVABLE PANEL FOR SERVICING
8 SILICONE TUBE (HEAT EXCHANGER
AIR VENT)
9 SECURING NUT, AIR / GAS MANIFOLD
CLAMP
10 FAN DRIP GUARD
11 HEAT EXCHANGER
12 WALL MOUNTING FRAME
13 FLUE OVERHEAT THERMOSTAT
14 SYSTEM PRESSURE GAUGE
15 PUMP
16 DRAIN POINT
17 CH RETURN
18 CONTROL PANEL IN SERVICE POSITION
19 MAINS COLD WATER IN
20 COVER FOR EXTERNAL WIRING
CONNECTIONS
21 GAS INLET CONNECTION 22mm
COMPRESSION
22 DHW OUT
23 ACCESS COVER FOR TRANSFORMER
& PCB
24 CH FLOW
25 SYPHON OUTLET CONNECTION
(22mm PLASTIC PIPE)
26 PLATE TO PLATE DHW HEAT
EXCHANGER
27 ACCESS POINT FOR CLEANING
HEAT EXCHANGER/SUMP
28 GAS VALVE
29 FAN
30 MANUAL VENT POINT
31 FAN PRESSURE TEST POINT
32 F LU E AI R P R ES S U R E
CONNECTION (BLANKED OFF ON THIS
APPLIANCE)
LAYOUT & COMPONENTS
SWITC H
7