14
e
4.6
CONNECTING THE GAS AND WATER
The appliance is supplied with a fixing jig that
includes service valves (fig. 14). The service
valves are of the compression type. The
accessories pack contains sealing washers etc,
for use with the service valves.
When connecting pipe work to the valves, tighten
the compression end first then insert the sealing
washers before tightening the valve to the
appliance.
NOTE
It will be necessary to hold the valve with one
spanner whilst tightening with another.
Fig. 14
Filling Loop
Cold water Inlet
Stopcock/filling
valve
Hot water
Outlet
Gas
Cock
Safety valve
outlet
C/H return
valve
C/H flow
valve
4.6.1
GAS (see fig. 6A & 14)
The appliance is supplied with a 15mm service
valve, connect a 15mm pipe to the inlet of the
valve and tighten both nuts.
NOTE
It will be necessary to calculate the diameter of
the gas supply pipe to ensure the appliance has
an adequate supply of gas.
4.6.2
FLOW & RETURN (see fig. 6A & 14)
The appliance is supplied with 22mm service
valves for the flow and return connections,
connect a 22mm pipe to the inlet of each valve
and tighten both nuts.
NOTE
Depending on system requirements, it may
necessary to increase the size of the flow & return
pipe work after the service valve connections.
4.6.3
COLD WATER INLET (see fig. 6A & 14)
The appliance is supplied with a 15mm combined
stopcock and double check-valve, connect a
15mm pipe to the inlet of the stopcock and tighten
both nuts.
4.6.4
HOT WATER OUTLET (see fig. 6A & 14)
The appliance is supplied with a 15mm outlet
connection, connect a 15mm pipe to the outlet
connection and tighten both nuts.
4.6.5
SAFETY VALVE (see fig. 6A & 14)
Connect the safety valve connection pipe
between the safety valve outlet and the fixing jig.
Fig. 13