Initial Lighting - Keston 30C Installation And Servicing Instructions

40 INITIAL LIGHTING

Legend
A. Pre-heat On/off
B. DHW temperature control
C. CH temperature control
D. Off/Summer/Winter/Reset Control
E. Boiler Status
F . Burner 'on' indicator
G . CH Flow Isolating Valve
H. Pressure Gauge
J. Gas Inlet Pressure Test Point
K. Gas Service Cock
L. DHW Inlet Valve
M. CH Return Isolating Valve
N. DHW Outlet
1. Check that the system has been filled and that the boiler is
not airlocked. Ensure the automatic air vent cap is open.
Refer to Frame 30.
Note.
It is important the burner is not operated before the system is
fully vented of air. If it is necessary to operate the appliance
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 Frame 44.
3. Check that the drain cock is closed and that the CH and
DHW isolating valves (M, L and G) are OPEN.
4. Check that the electrical supply is OFF.
5. Check that the boiler mode control knob (D) is off.
6. Check that the gas service cock (K) is OPEN.
7. Slacken the screw in the inlet pressure test point (J) 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. Set the CH temp control (C) to max and turn the mode
control knob (D) to
The boiler control will now go through its ignition sequence
until the burner is established.
10. If the boiler does not light the following messages will be
displayed in rotation "Ignition Lockout" - "1 Check other
gas appliances" -
installer" .
After 5 attempts the boiler will lock out and
carry on displaying the messages. Reset the boiler (refer
to Frame 40B). The boiler will repeat its ignition sequence.
If reset occurs 5 times within 15 minutes then "Too many
resets" will be shown. If power is removed this will be
reset.
When the burner is established the BLUE 'Burner On' neon
(F) will be illuminated, the LCD will display "Central
Heating" and "Radiator Temp XX
Keston 30C -
Installation and Servicing
INSTALLATION
H
, ensure the timer/room stat are on.
"2 Reset boiler" - "3 Contact
o
C" .
A B E
G
N
K
J
DOMESTIC HOT WATER
11. With the boiler firing, set the DHW Temp Control knob
(B) to maximum and fully open a DHW tap.
The boiler will continue to run and the display (E) will
show "Hot Water" - "Temperature XX
Efficiency" .
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.
For additional gas supply information refer to "Gas Supply"
on page 8
13. Turn off the DHW tap.
Note. The temperature displayed "XXºC" is that
measured at that moment, not the set temperature.
Note. The boiler incorporates a fan overrun cycle
which MUST NOT be prematurely interrupted by
isolation of the mains electricity supply.
F C D
L
M
3G9863
o
C" - "High
continued. . . . .
39