HAMWORTHY HEATING LTD
WARMWELL
500001091/F
Tighten screws ensuring ‘U’ clamp threads do not
damage insulation. It may be necessary to remove
the bottom thread of the ‘U’ clamp with the bracket in
lower position as it may foul the draught hood.
Ensure no undue stress is placed on the gas pipe/
manifold and ensure pipe is vertical/horizontal before
clamping in position.
10.4 Connection of Boilers to the Flue System
.
Notes on the recommendation for design of the flue
system are given in
Section 6:FLUE SYSTEM
(p9).
It is recommended that each individual condensing
boiler have its own flue if possible. Due consideration
should be given to obtain constant draught conditions
if possible at the boiler discharge.
Flueways must be designed with continuous falls to
low points where a suitable condensation trap should
be fitted. All joints in the flue should be fitted such
that condense drains into the preceding flue pipe
without leakage.
Some of the flue may be under slight positive
pressure therefore escaping vapour may condense
on the outer skin of the flue. Again, all joints should
therefore be suitably sealed against leakage.
Flues must be constructed with suitable materials to
resist corrosion against the acidic nature of the flue
gases. Materials used in the joints must also resist
attack.
It is important, for service requirements, that the flue
system is fully self-supporting. Check the flue and
chimney are clear from obstruction.
10.5
Gas Connection
The Warmwell boiler is supplied with a gas pipe
which exits the casing at the rear after installation,
see Figure 2.1 (p3) for position. The incoming mains
gas supply must be capable of supplying gas to the
boiler at the required pressure, under all firing
conditions. For sizing information see Figure 5.3
(p8). An approved isolating valve & union should be
installed for each boiler in a convenient and safe
position and be clearly marked.
10.6
Water Connections
See Figure 2.1 (p3) for position of water connections
(flow and return). An R½ BS21 plug is fitted local to
the return connection for the fitting of a drain valve
(not HHL supply). Care must be taken when
installing water system pipework that undue stress is
avoided on the boiler flow and return connections.
The return connection is fitted to the copper header
on the heat exchanger.
WHEN ATTACHING
PIPEWORK TO THIS HEADER IT IS IMPERATIVE
THAT NO UNDUE STRESS IS PLACED ON THE
Rc2 BS21 CONNECTIONS.
10.3 Gas Pipe Fitting Instructions
Refer to Figure 10.3a - Remove half union and gas
valve from gas train. Ensure gas valve/manifold
bracket does not suffer undue stress/movement.
Affix half union and gas valve assembly to gas pipe
as shown using proprietary sealing compound.
Ensure gas valve lever is correctly orientated. Offer
gas pipe to boiler as shown. Bracket should be
mounted as shown. Bracket position will be
dependent on boiler size.
Figure 10.3b shows the pipe clamp fitted to
Warmwell 95, 120 and 140kW boilers.
Figure 10.3c shows the pipe clamp fitted to
Warmwell 60kW boilers.
Figure 10.3a
Figure 10.3b
Figure 10.3c
18
Содержание Warmwell 120
Страница 50: ...HAMWORTHY HEATING LTD WARMWELL 500001091 F NOTES 44...
Страница 51: ...Notes...
