5.9
For filling the Heating Circuit for the radiators or UFH, the filling
valves and connecting pipes are integral to the HIU.
This may be removed while pipe work and isolation valves are made
good. Refit when commissioning.
On completion of filling the Heating Circuit the temporary connection
pipe between cold Water supply should be removed. Place safely
inside the unit for future filling operations.
Wras approval number 1804045
SECTION 5
-
Installation
Page 9
Cold water filter
Electrical connections cable glands.
Safety valve
discharge
connection
Accessory option
-
stand off brackets (SOB)
5.10
Stand off brackets create a space behind the
HIU that can be used to run pipes in.
The stand off brackets are 40mm off the wall allow-
ing for 13mm pipe insulation thickness.
First attach the brackets using 4 x fixing screws to
the back of the HIU in the matching fixing holes pro-
vided.
Fit the wall bracket as in 5.6 and per 5.1
Then hang the HIU as in diagram 5.6, but this time
using the outer wall bracket hooks.
Use outer bracket hooks.
5.11
Safety valve discharge pipe.
The safety valve has a
1/2”
F threaded connection for 15mm pipe to
be connected to (15mm x
1/2”
M compression coupling to be provid-
ed by the installer).
The discharge pipe should have a continuous fall and conform to
BS6798.
Where the pipe empties into a drain then that area must be frost free,
and consideration as to a trap being include as well as a tundish to
maintain any discharge is fully visible.
Discharge connection
06/21 E&OE
Temporary connection
to remove after filling.
