2.18 CONNECTIONS & FILLING
CAUTION:
Heating the isolation valves may damage
the fibre seals
Refer to Gas Supply
1.9
Refer to Section
1.14
CAUTION:
The gas service cock is sealed with a
non-metallic blue fibre washer, which must not be
overheated when making capillary connections.
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.
25
Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
Filling
Loop
CH Flow
DHW
Outlet
Gas
Supply
DHW
Inlet
CH
Return
Fit each union with the fibre seals provided.
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.
IMPORTANT
Install the Keston system filter according
to system filter installation and maintenance guide. Failure to
install the system filter correctly will affect boiler warranty.
WATER CONNECTIONS DHW
1. Fit the DHW inlet service valve (blue handle) and copper
tail to the threaded boss connection ensuring the seal
provided is correctly located.
2. Fit the DHW outlet pipe tail to DHW outlet connection,
ensuring the seal provided is correctly located.
3. Fit the filling loop provided between the DHW inlet valve
and the CH return valve.
GAS CONNECTION
For details of the position of the gas connection:
PRV
Drain Connection
15 mm Fitting
(not supplied)
PRV
Drain Pipe (supplied)
A purpose made PRV drain pipe is provided with the
boiler to allow safe discharge through a wall to the
outside of the building. This is particularly relevant
to ‘high rise’ installations but can be used for all
installations.
PRV DRAIN
The PRV connection, located at the bottom right-hand
side of the boiler comprises an open ended 15 mm pipe.
A 15 mm compression coupling is supplied to assist in
removal of pipework if required.
The domestic hot water flow rate is automatically
regulated to a maximum:
kW
L/m
g/m
30
12.4
2.8
35
14.5
3.2
