Ideal Boilers LOGIC MAX HEAT H 12, Installation & Servicing

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Installation and Servicing
SECTION 2 - INSTALLATION
2.26 INITIAL LIGHTING
THE DISPLAY
The user control has one display to inform the user about
the status of the boiler. The LCD shows the status of the
flame. If no flame is detected the flame symbol will not be
visible. When the flame is detected the flame symbol will
be visible permanently.
Below is a list with display functions in normal operation.
0 0
Standby, no demand for heat present.
ON
There is a demand for heat.
F P
Boiler is active for boiler frost protection.
Boiler is in lockout for a specific error. Display will
show a number after the “ ” to indicate which error is
detected.
F
Boiler has a fault for a specific error. Display will
show a number after the “ ” to indicate which error is
detected.
Note:
Boiler frost protection - boiler operates if the
ambient temperature is below 5ºC until it reaches 19ºC.
Legend
A. Central Heating Temperature Knob
B. Mode Knob
C. Boiler Status
D. Burner ‘on’ Indicator
E. Central Heating Economy Setting
F. RESTART Button
G. Function Button
H. Gas Inlet Pressure Test Point
J. Gas Service Cock
1.
Check that the system has been filled and that the boiler is not
airlocked.
Note.
It is important the burner is not operated before the system is fully
vented of air. If it is necessary to operate the system pump to
assist venting of the air this must be done with the gas service cock
turned off.
2. Refit the boiler front panel. Refer to Section 3.2.
3. Check that the electrical supply is OFF.
4. Check that the boiler mode knob (B) is OFF.
5. Check that the gas service cock (J) is OPEN.
6. Slacken the screw in the inlet pressure test point (H) and connect
a gas pressure gauge via a flexible tube.
7. Switch the electricity supply ON and check all external controls
are calling for heat.
CENTRAL HEATING
8. Set the CH temp knob (A) to max and turn the mode knob (B) to
“BOILER ON”. The boiler control should now go through its ignition
sequence until the burner is established.
9.
If the boiler does not light then after 5 attempts the boiler will lock
out and display fault code
L 2
.
Restart the boiler (Refer to Section 2.28). The boiler will repeat
its ignition sequence. If restart occurs 5 times within 15 minutes
then
LC
will be shown. If power is removed this will be restarted.
When the burner is established the ‘ ’ will be shown on the display
with the word ‘ON’ indicating central heating operation and the
current flow temperature shown in the 2 digit display.
10. 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.
For additional gas supply information refer to “Gas Supply” on page 12.
11. Remove gas pressure gauge, tighten inlet pressure test point
and check for gas tightness.
Note. The boiler incorporates a fan overrun cycle which
MUST NOT be prematurely interrupted by isolation of the
mains electricity supply.
ºC
ON
A E B C
D F G
MIN
e
RESTART
MAX
BOILER
OFF
BOILER
ON
Gas Supply
J
H
INST
ALLA
TION