Condensing Boiler
10
19/11/03
Continue running for 15 minutes, venting every 5
minutes.
The Pilot is factory set.
The Main gas valve, GV2, gradually raises the
pressure to the set point. Allow at least 60 seconds
for the final pressure to stabilise.
IMPORTANT. It is essential when setting
the burner pressure that the inlet pressure
is at least 20 mbar (NG), 37 mbar (LPG)
with the boiler and any other connected
appliances running.
Set the burner pressure to the correct pressure by
using a manometer connected to the control and
adjusting the regulator to the desired input. (see the
charts below and Fig.1)
Where a bypass is fitted check its operation with the
system hot, the minimum flow rate through the
boiler should be as shown in the Technical Data on
Page1.
Set the pump speed to the highest setting that does
not provoke unreasonable operational noise within
the system.
Sealed Systems only:
re-pressurise to required
pressure and set the gauge indicator
With the system hot, check again for water sound-
ness. Refit the case to the boiler. Add remainder of
corrosion inhibitor. Balance the system in the
normal way to obtain even heating of all radiators.
If fitted set the cylinder thermostat to 60oC, or lower
if preferred.
Complete the Logbook and pass to the user when
explaining and demonstrating the operation of the
system. Their instructions are located under the
Electrical Tray.
Rating Table
(1040 Btu/ft
³)
(38.8 MJ/m
³
)
kW
Btu/h
sec/ft
³
m
³
/2 mins
10
34120
109.7
0.0309
12
40944
91.4
0.0371
14
47768
78.4
0.0433
16
54592
68.6
0.0495
18
61416
61.0
0.0557
20
68240
54.9
0.0619
22
75064
49.9
0.0680
24
81888
45.7
0.0742
26
88712
42.2
0.0804
Note: The boiler is fitted with a syphon
trap that includes a blocked drain device.
This is to safeguard the boiler and help
defer the effects from the possible freez-
ing of the condensate pipework in ex-
treme weather.
The user should be made aware of this
feature and, that in the event of blocked
condensate pipework, for example frozen
condensate pipework, the boiler will au-
tomatically stop functioning. It will start
again as soon as the blockage has
cleared.
For Commission check list see next page.
