24
BOXER
combination boiler -
Installation and Servicing
INSTALLATION
34 INITIAL LIGHTING
1.
Remove the casing. Refer to frame 41.
2.
Check that the system has been filled and that the boiler is
not airlocked. Ensure the automatic air vent cap (A) is
open. To facilitate air removal from the boiler, turn the
boiler on for 20/30 seconds. After this time turn the boiler
off for 20/30 seconds. Repeating this sequence 5 times
should remove all of the air from the boiler circulating
system, thus avoiding the overheat thermostat operating.
3.
Remove the expansion vessel and vertical protection
shield/air guide utilising a screwdriver for opening the
clips and hang the expansion vessel on the side boiler
position.
4.
Check that all the drain cocks are closed and that the CH
and DHW isolating valves are OPEN.
5.
Check that the electrical supply is OFF.
6.
Check that the boiler ON/OFF switch (I) is off.
LEGEND
A.
Automatic air vent.
B.
Reset button
C.
Fault led
D.
Flame led
E.
CH mode led
F.
Mains On led
G.
CH thermostat knob
H.
DHW thermostat knob
I.
Programmer
A
Cap
5(6( 7
(17( 5
2) )
21
J.
Boiler On/Off switch
L.
Inlet pressure test point
M.
Burner pressure test
point
N.
CH flow
O.
DHW outlet
P.
Gas inlet
Q.
DHW inlet
R.
CH return
S.
Pressure gauge
Control panel
The user panel is equipped with two
regulation knobs and the CH knob
has a double function.
In the minimum position (turn all
LHS), the boiler works only in DHW
mode (summer position); between
first line and maximum position (turn
all RHS), the boiler works in DHW
and CH mode (winter position).
7.
Check that the gas service cock is OPEN.
8.
Slacken the screw in the inlet pressure test point (L) and
connect a gas pressure gauge via a flexible tube.
9.
Switch the electricity supply ON and check all external
controls are calling for heat.
10. CENTRAL HEATING
Set the boiler thermostat knob to maximum and set the
boiler ON - OFF switch to ON. The GREEN mains On and
CH leds should now be illuminated. The boiler control
should now go through its ignition sequence until the
burner is established.
11.
If the boiler does not light after 10 seconds, the RED
lockout led is illuminated. Press the reset button and the
boiler will repeat its ignition sequence. When the burner is
established the GREEN Burner On led will be
illuminated.
B
C
E
D
F
G
H
J
L
M
N
O
P
Q
R
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I
INST
ALLA
TION