31
Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
1
0
2
3
4
bar
2.25 INITIAL LIGHTING
The boiler incorporates a fan overrun cycle which must not be
interrupted by isolation of electricity supply.
1. Check that the system has been filled and that the boiler
is not airlocked.
2.
Refit the boiler front panel.
Refer to Section
3.4
3.
Check that the drain cock is closed and that the CH and
DHW isolating valves (G,K & J) are OPEN.
4.
Press the Mode button until a cross is shown going through
both tap and radiator icons (boiler off)
5.
Switch the electrical supply OFF
6.
Check that the gas service cock (I) is OPEN.
7.
Slacken the screw in the inlet pressure test point (H) and
connect a gas pressure gauge via a flexible tube.
8.
Switch the electricity supply ON and check all external
controls are calling for heat.
CENTRAL HEATING
9.
Press the Mode Button (C) until there is no longer
a cross through the Radiator icon. Turn the Central
Heating Temperature Knob clockwise until a target of
80°C is shown. The boiler control will now go through its
ignition sequence until the burner is established.
10.
If the boiler does not light then after 5 attempts the boiler
will lock out and display fault code L2. Press the Restart
Button (F). The boiler will repeat its ignition sequence. If
Restart occurs 5 times within 15 minutes then L 0C will
be shown.
When the burner is established the flame symbol (E) will be
shown on the display and the current flow temperature will
be shown in the large digits underneath the radiator symbol.
DOMESTIC HOT WATER
11.
With the boiler firing, rotate the DHW Temp Knob (A)
clockwise until a target of 65°C is shown and fully open
a DHW tap. The boiler should continue to run and the
current DHW temperature will be shown in the large
digits underneath the tap symbol.
12.
Ensure that with the boiler operating, the dynamic gas
pressure is able to obtain maximum output.
Refer to
Table 2
IMPORTANT
The gas input to the burner is regulated by the gas valve
according to the air flow produced by the fan. It is not user-
adjustable. Any interference to sealed settings on the gas
valve will adversely affect operation and render our warranty
void.
13.
Turn off the DHW tap.
14.
Remove gas pressure gauge, tighten inlet pressure test
point and check for gas tightness.
Legend
A. Domestic Hot Water
Temperature Knob
B. Central Heating
Temperature Knob
C. Mode Button
D. Boiler Status Display
E. Burner On indicator
F. Restart Button
G. CH Flow Isolating Valve
H. Gas Inlet Pressure Test
point
I.
Gas Service cock
J. DHW Inlet Valve
K. CH Return isolating valve
L. DHW Outlet
M. Filling loop valve
N. Pressure Gauge
Refer to Gas Supply
page 10
A
D
B
C
E
N
Filling
Loop
CH Flow
DHW
Outlet
Gas
Supply
DHW
Inlet
CH
Return
G
L
I
H
M
K
J
F
CAUTION:
Do not operate the appliance before
it has been fully vented of air. If it is necessary to
operate the pump, do so with the gas service cock
turned off.
Содержание LOGIC COMBI2 C24
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