Option Floor Standing System Boiler - GAH S40/65 User Manual

5-5 Option Floor Standing System Boiler - OS60/80, OS80/95, OS90/120, OS100/150
Note
For:-
Service Access .................... see 5-1.1
Heating Connections ........... see 5-1.2
Connecting Control Panel .... see 5-1.3
Oil Connection .................... see 5-1.4
5 5 5 5 5
1. PUMP
2. PRESSURE GAUGE
3. PRESSURE RELIEF VALVE
4. PRESSURE VENT
5. EXPANSION VESSEL
6. AIR VENT
7. FILLING LOOP
Note
No other pump should be fitted to the
system.
2
3
2
40
1 3
20
1
0
0
0 4
bar psi
bar
18
5-5.1 Boiler Arrangement
2
5
5-5.2 The Heating System
AIR VENT
(NOT SUPPLIED)
2
3, 4
1 6
FLOW
5
RETURN
COLD MAINS FEED
5-5.3 Pump
The Pump is a standard 3 speed central heating circulating pump which pumps the hot
water through the system. The unique design of the Boiler enables the pump direction
to be the same for both left hand and right hand flow connection.
5-5.4 Pressure Gauge
The Pressure Gauge is provided to indicate the system pressure.
4
60
When the system is full with cold water and all radiators are full, on and vented, the
5
80
gauge will show the cold fill pressure. Set the red pointer to the cold fill pressure. If the
6
system pressure, indicated by the black pointer, falls below the cold fill pressure, it
indicates that the system requires topping up.
6
1
Fig. 5-5a Schematic Diagram of System Boiler
DOMESTIC HOT WATER
INDIRECT CYLINDER
OPTIONAL EXTRA PUMP
ON RETURN FOR
LARGER SYSTEMS
7
Fig. 5-5b Typical Sealed System
INST INST INSTALLA INST INST ALLA ALLA ALLATION ALLA TION TION
3
4
INTERNAL SEALED PIPEWORK
FOR MINIMUM HEAT LOSS AND
EASY INSTALLATION
HOT FLOW
EITHER SIDE
1. PUMP
2. PRESSURE GAUGE
3. PRESSURE RELIEF VALVE
4. P .R.V. DISCHARGE (Piped by installer)
5. EXPANSION VESSEL
6. AIR VENT
COOLED RETURN
EITHER SIDE
TION TION 5 5 5 5 5
OS80/95 SHOWN