Boiler Water Connections - Keston HEAT 2 45 Installation & Servicing

Figure 3 - Connection of a Condensate Pump Typical
Method (see manufacturers detailed instructions)
Boiler
with 75mm
sealed
condensate
trap
Min Ø 19mm
Internal pipe
Figure 5 - Connection of a Condensate Drainage Pipe to an
External Rainwater Downpipe (only combined foul/rainwater
drain)
Boiler
with 75mm
sealed
condensate
trap
Min Ø 19mm
Internal pipe
Min Ø 30mm
Internal pipe
Terminated
minimum
and cut at 45º
gradient
1:19
43mm 90º male/
female bend

2.16 BOILER WATER CONNECTIONS

The boiler flow and return pipes are terminated with a 1
male taper connection located at the bottom of the appliance.
Note. This appliance is NOT suitable for use with a direct hot
water cylinder.
Plastic plugs if fitted into the open ends of the flow and return
pipes must be removed before connecting the system pipework.
Upon installation a tee connection, isolation valve and safety
relief valve/drain point must be fitted to the boiler flow/return
connection respectively. (See image opposite). This hardware
is provided within the boiler carton. This allows isolation for the
water connections in the event of servicing the water circulation
pump fitted within the boiler casing.
IMPORTANT: Correct fitment of the safety pressure relief valve
must be made to protect the boiler in the event of inadvertent
operation when isolated.
26
SECTION 2 - INSTALLATION
Visible air break
minimum
gradient
1:19
Condensate pump
(Install in accordance with
manufacturers instructions)
≤ 3000
Water/
weather proof
combined foul/
insulation
rain water drain
External air
break
Air gap
68mm Ø PVCU
Strap on fitting
1
/
4
Figure 4 - Connection of condensate Drainage Pipe to
External Soil & Vent Stack
Boiler
with 75mm
sealed
condensate
trap
Min Ø 19mm
Internal pipe
Boilers without 75mm sealed
condensate trap must be fitted with
a 75mm trap and visible air break
Figure 6 - Connection of a Condensate Drainage Pipe to an
External Purpose Made Soak Away.
Boiler
minimum
with 75mm
gradient
sealed
1:19
condensate
trap
Min Ø 19mm
Internal pipe
Boilers without 75mm sealed
condensate trap must be fitted with
a 75mm trap and visible air break
2 rows of three Ø12mm holes
25mm centres, 50mm from
the bottom of the tube, facing
away from the house
" BSP
Tee
(supplied)
Isolation Safety
Valve Valve
(supplied) (supplied)
Water/weather
proof insulation
Min Ø 30mm
Internal pipe
minimum
gradient
1:19
Minimum
connection
height up to 3
storeys
Min Ø 30mm
Water/Weather
Internal pipe
proof insulation
Max 3m external
pipework
Limestone
chippings
≥ 500 ≤ 3000
Tee
(supplied)
Drain Isolation
Point Valve
(supplied) (supplied)
Installation & Servicing