36
INSTALLATION
ESPRIT 2 -
Installation and Servicing
43 INITIAL LIGHTING
1.
Check that the system has been filled and that the boiler is
not airlocked. Ensure the automatic air vent cap (K) is open.
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 sealing panel. Refer to Frame 50.
3.
Check that the drain cock is closed and that the CH and DHW
isolating valves (N,P and R) are OPEN.
4.
Check that the electrical supply is OFF.
5.
Check that the boiler on/off switch (A) is off.
6.
Carefully align the user control and push gently into place.
Secure with the single screw located underneath.
7.
Check that the gas service cock (F) is OPEN.
8.
Slacken the screw in the inlet pressure test point (E) and
connect a gas pressure gauge via a flexible tube.
9.
Swing the control box to the working position and secure with
the clamp.
10.
Connect the low voltage electrical lead from the user control
to the control box (refer to Frame 51).
11.
Screw the control into position.
12.
Switch the electricity supply ON and check all external controls
are calling for heat.
13. CENTRAL HEATING
Switch the boiler on/off switch (A) to ON. The boiler
control should now go through its ignition sequence until
the burner is established.
14.
If the boiler does not light after 3 attempts the fault code
“LF” will be displayed, Press the select button (C) and
the boiler will repeat its ignition sequence.
When the burner is established the flame 'Burner On'
indicator will be illuminated, the LED display will show
the radiator status symbol.
LEGEND
A.
Boiler On/Off switch
B.
LED display
C.
Select (reset) button
D.
Injector pressure test point
E.
Inlet pressure test point
F.
Gas service cock
G.
Casing pressure test point
H.
Overheat thermostat
J.
Control thermistor (flow)
K.
Automatic air vent
M.
Pressure gauge
N.
CH Flow isolating valve
P.
CH Return isolating valve
Q.
DHW outlet
R.
DHW inlet
S.
Spark generator
The itime programmer display
The LCD display has a number of indicators to show the
operation of the boiler. In stand-by mode there are no
additional indicators other than the time of day. Each
channel, CH and DHW, status is shown as OFF, ON,
TIMED or ADVANCE (see users guide). In a timed on
period the status of the boiler is:
Radiator symbol indicates CH demand.
Tap symbol indicates DHW or preheat demand.
Flame symbol indicates burner status.
In error conditions the following indicates the error:
Blocking error is proceeded by “H” on the LCD display.
Locking out error is proceeded by a “L” on the LCD display.
Control Box Servicing Position. See Frame 51.
INST
ALLA
TION
206091-1.pmd
26/05/2010, 16:08
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