Supplied By www.heating spares.co Tel. 0161 620 6677
18
5.2
COMMISSIONING THE APPLIANCE
Refer to Fig. 25
Note:
If, at any time during the commissioning procedure, it is required
to prevent the boiler from modulating, set the CH temperature control
knob to the Service position.
a)
Check that the gas supply is tur
ned ON and the gas service cock is
OPEN.
b)
Slacken the scr
ew in the burner pressure test point and connect a
suitable manometer. Refer to Fig. 30.
c)
Set the DHW and CH temperatur
e control knobs fully anti-
clockwise to the standby positions.
d)
T
urn on the electrical supply and set the ON/OFF switch to ON (I).
The
Reset
LED will briefly show r
ed, then blue, then extinguish.
The fan will start briefly and then stop.
The LEDs 1-4 (yellow) will illuminate briefly.
e)
T
urn the DHW temperature control knob to the desired temperature
position and fully open any DHW tap. LED 1 will show yellow
(
Economy
mode). The ignition sequence will commence and
when flame is detected the
Reset
LED will show blue.
If the burner fails to light after five attempts, ignition lock-out occurs.
In this event the
Reset
LED will show RED.
To re-set the appliance and initiate a further ignition sequence,
press the
Reset
button.
Note:
If the
Reset
LED show RED, to establish the cause press and hold
the
Reset
button for three seconds.
The
Reset
LED will flash RED and
the error code will be displayed via the LED’s 1-4.
f)
After ignition, allow the boiler to r
un for at least 10 minutes and
check that the burner pressure is as stated on the data badge ±10 %.
(Nat. gas 15.5 mbar 39.6 kW or 135115 Btu/h gross heat input,
Propane 23.4 mbar or 120068 Btu/h). The DHW burner pressure
is factory set and should not require adjusting. If the burner pressure
is low, check that the appliance has not started to modulate (This will
occur if the DHW flow rate is low. If modulation is suspected, open
all DHW taps to maximise the flow and re-check the burner
pressure). If it is necessary to adjust the burner pressure the method
is described in section 9.5 ‘Gas valve replacement’.
Note:
T
o select
Comfor
t
DHW control, ie with pre-heat, turn the
DHW temperature control knob fully clockwise and then back to the
desired temperature setting. LED 2 will then illuminate and LED 1
extinguish.
g)
Close the DHW tap and ensur
e that the burner goes out (BLUE
light off) and the pump stops after an over-run period of 5 minutes.
h)
Ensur
e that the room thermostat (if fitted) is calling for heat.
Turn the clock override switch to the ‘I’ position Turn the CH
temperature control knob to the ‘+’ position.
The boiler will perform a series of self-checks, light and then
go to minimum rate burner pressure(Nat. gas 3 mbar, propane
5.8 mbar). After ignition, the burner pressure will remain at this
for about ten minutes, before ramping up to the factory set burner
pressure, or to a modulated value if the system is hot.
The
Reset
LED will show BLUE and LEDs 3 and 4 will show
YELLOW.
i)
Set the clock to the desir
ed times by setting the tabs.
j)
Slide the clock over
ride switch to the 'timed' position
and
check the operation of the clock and room thermostat (If fitted)
Caution:
W
ith the CH temperature control knob in the Service position,
the boiler will fire continuously at full output and LEDs 3 and 4 will flash.
This setting is for the convenience of the Service Engineer ONLY.
Mains ON/OFF
Switch
CH Error Code
Indicator (3&4)
CH Temp.
Control
DHW Economy/
Comfort Switch
Economy/Comfort
Error Code LED (1&2)
Service Function
24hr Clock
•
•
BURNER (Blue)
LOCK-OUT (Red)
LED and
Reset Button
•
•
•
•
Pr
essure
Gauge
DHW
Temperature
Control
•
ARROW
INDICATES
CURRENT TIME
•
T
ABS OUT
=
ON
PERIOD
•
T
ABS IN
=
OFF
PERIOD
•
CLOCK OVERRIDE
SWITCH (Heating only)
= Continuous ON
= Timed
= OFF
27
F
ASCIA PANEL AND CONTROLS
•
• •
•
5.3
DOMESTIC HOT WATER FLOWRATE
A flow r
egulator is supplied factory fitted to the appliance to ensure that
no adjustment is necessary. Should the mains flow rate be below the
minimum required, it is possible to remove the flow regulator from the
appliance as instructed in section 9. The nominal pre-adjusted flow rate
may vary by ± 5 % due to factory tolerances and mains water pressure
fluctuation.
5.4
FINAL CHECKS
a)
T
urn both the DHW and CH temperature control knobs to standby.
b)
T
urn the appliance on/off switch to the off (o) position, remove
the manometer and tighten the burner pressure test point screw.
Re-light the burner and test for gas tightness.
c)
Fit the boiler casing as described and illustrated in Figur
e 28: Fit each
side panel with two screws at the top and bottom of each panel. Position
and fit controls cover in place using screws provided. Ensure it hinges
correctly. Fit the front panel in position using locating studs and ensure
correctly seated by pressing.
d)
Set the heating and hot water contr
ols to the required settings.
Ensure that the clock override switch is in the timed position and check
that the time clock is set at the desired time periods. Set the room
thermostat (if fitted) to the required setting.
