34
Installation and Servicing
Section 2 - Installation
INST
ALLA
TION
2.30 INITIAL LIGHTING
IMPORTANT
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.
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 valve is closed.
4. Press the Mode button (B) until Off is shown at the
bottom of the screen (boiler off)
5. Switch the electrical supply OFF
6. Check that the gas service cock (J) 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.
9. Press the Mode button (B) until Off is not shown at the
bottom or the screen. Turn the Temperature Knob until
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 L 02.
11. Press the Restart Button (E). The boiler will repeat its
ignition sequence. If Restart occurs 5 times within 15
minutes then L 0C will be shown. If power is removed
this will be restarted.
12. When the burner is established the flame symbol
(D) will be shown on the display and the current flow
temperature will be shown in large digits.
13. Ensure that with the burner on, the dynamic
gas pressure is able to obtain maximum output.
Refer to Table 2.
14. Replace the screw in the inlet pressure test point and
check for gas soundness.
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.
Refer to Gas Supply
page 10
Legend
A. Temperature Knob
B. Mode Button
C. Boiler Status Display
D. Burner On indicator
E. Restart Button
H. Gas Inlet Pressure Test
Point
J. Gas Service Cock
Note.
The boiler incorporates a fan overrun cycle which MUST NOT be prematurely interrupted by isolation of the mains
electricity supply.
C
A
B
D
N
E
Gas Supply
J
H
Содержание LOGIC HEAT2 H12
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