Hamworthy Wessex 100 M100 Installation, Commissioning And Servicing Instructions page 8

Figure 1.1 Boiler Installation (Typical)
Expansion pipe
Float
valve
Mains water
Feed &
expansion
tank
T
Feed
pipe
VENTED SYSTEM: Primary loop, Hamworthy recommended system.
Mains water
Lockshield
valve
Lockshield
Lockshield
valve
UNVENTED SYSTEM: Primary loop, Hamworthy recommended system.
Expansion pipe
Float
Valve
valve
Mains water Feed &
expansion
tank
Feed
pipe
VENTED SYSTEM: Single pipe header
Mains water
Lockshield
valve
Lockshield
Lockshield
valve
UNVENTED SYSTEM: Single pipe header
HAMWORTHY HEATING LTD
Pressure &
Temperature
Drain
gauges
T
P
Safety
valve
Module Module Module
1 2 3
Hamworthy Modular Boilers
Circulation pump
(Primary loop)
Automatic
Air Vent
Expansion
vessel
Drain
valve
valve
Double
Temporary
check
fill line
valve
Drain
Safety
valve
Module Module Module
1 2
Hamworthy Modular Boilers
Circulation pump
(Primary loop)
Automatic
Air Vent
Expansion
vessel
Drain
valve
valve
Double
Temporary
check
fill line
valve
Valve
Circulation pump
(System)
Valve
Drain
valve
Drain
Safety
valve
Valve
Module Module Module
1 2
Hamworthy Modular Boilers
T
Circulation pump
(Primary loop)
Pressure &
Temperature
P T
Gauges
Valve
Circulation pump
(System)
3
Drain
Safety
valve
Module Module
1 2
Hamworthy Modular Boilers
Circulation pump
(Primary loop)
2
WESSEX 100 M
Pressure &
Temperature
T
P
gauges
Valve
Circulation pump
3
(System)
Valve
Drain
valve
Pressure &
Temperature
gauges
P T
Valve
Circulation pump
(System)
Module
3
Valve
Drain
valve
Automatic
Air Vent
Heating load
Automatic
Air Vent
Heating load
Automatic
Air Vent
Heating load
Automatic
Air Vent
Heating load
500001080/F