25
Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
WATER CONNECTIONS CH
1. Connect the CH flow service valve (black handle) and
copper tail provided in the hardware pack to the threaded
boss connection provided at the lower rear of the boiler.
2. Connect the CH return. valve (black handle) and copper tail.
GAS CONNECTION
For details of the position of the gas connection:
PRV DRAIN
The PRV connection, located at the bottom left-hand side of
the boiler, comprises an open ended grommet.
IMPORTANT
The grommet is designed for 15 mm Ø copper pipe.
If possible, preassemble and solder the pipework before
Installing.
If this is not possible the soldering must be more than
100 mm away from the grommet. Make sure the grommet is
not damaged by the heat.
Install the condensate pipe as follows:
1. Make sure that the 15 mm Ø copper pipe
is cut perpendicular to the pipe.
2. Make sure that the pipe is not damaged,
and clean and free from burs.
3. Using pliers put the clip over the
grommet. Continue to hold the clip open.
Note.
Do not release the clip until step 5 (see below).
4. Push the copper pipe into the grommet (minimum of 15
mm). Make sure that the pipe is parallel with the grommet.
5. Below the stop mark on the grommet open the pliers to
release the clip.
6. Make sure that the clip and pipe are attached correctly.
7. Make sure that the PRV discharge pipe is correctly
attached. Make sure that the angle of the pipe run is
sufficient to remove discharged water.
WARNING:
Make sure that the water or
steam (from the boiler) is
discharged safely. Hot water
or steam is dangerous and
can cause serious injury, and
damage to electrical systems.
PRV Drain
Connection
15 mm elbow
or fittings
(not supplied)
PRV Drain Pipe
(not supplied)
FILLING
IMPORTANT
- when filling:
A. Ensure the dust cap on air vent located at the rear of the
pump chamber is slightly unscrewed.
B. When filling, there may be a slight water leak from
the air vent therefore electrical connections should be
protected.
1. Ensure that the CH isolating handles are open.
2. Fill and vent the system.
3.
Check for water soundness.
Remove all boss blanking plugs before connecting the
hardware.
Fit each union with the fibre seals provided.
SCAN
for video
Yellow
Handle
Black
Handle
Black
Handle
CH Flow
Gas
Supply
CH Return
PRV
Outlet
Dust Cap
CAUTION:
The gas service cock is sealed with a
non-metallic blue fibre washer, which must not be
overheated when making capillary connections.
Stop
point
Clip
15 mm
SCAN
for video
CAUTION:
Heating the isolation valves may damage
the fibre seals
2.17 CONNECTIONS & FILLING