Supplied By www.heating spares.co Tel. 0161 620 6677
15
UNICA BHE
Fig. 15
4.6
CONNECTING THE GAS AND WATER
IMPORTANT - REAR SPACER KIT
If you intend to run the pipe-work vertically behind
the appliance, it will be necessary to use the rear
spacer kit (part code 435). It will also be necessary
to adjust the pitch of the fixing jig to compensate
for the increase in the depth of the appliance.
The appliance is supplied with a fixing jig that
includes service valves (fig. 14). The service
valves are of the compression type. The accesso-
ries 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 appli-
ance.
NOTE
It will be necessary to hold the valve with one
spanner whilst tightening with another.
4.6.1
GAS (fig. 16)
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 (fig. 16)
The appliance is supplied with 22mm service
valves for the flow and return connections, con-
nect a 22mm pipe to the inlet of each valve and
tighten both nuts.
NOTE
Depending on system requirements, it may nec-
essary to increase the size of the flow & return
pipe work after the service valve connections.
4.6.3
COLD WATER INLET (fig. 16)
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 (fig. 16)
The appliance is supplied with a 15mm outlet con-
nection, connect a 15mm pipe to the outlet con-
nection and tighten both nuts.
C/H return
valve
C/H flow
valve
Gas
cock
Hot water
outlet
Cold water inlet
stopcock/filling
valve
Fig. 16
Fig. 14