24
Classic
LXFF, FF
-
Installation
INST
ALLA
TION
INSTALLATION
42 COMMISSIONING AND TESTING
(a) Electrical Installation
1.
Checks to ensure electrical safety should be carried out
by a competent person.
2.
ALWAYS carry out preliminary electrical system checks,
i.e. earth continuity, polarity, resistance to earth and short
circuit using a suitable test meter.
WARNING.
Whilst effecting the required gas soundness test and purging air from the gas installation open all windows and
doors, extinguish naked lights and
DO NOT SMOKE.
(b)
Gas Installation
1.
The whole of the gas installation, including the meter,
MUST be inspected and tested for soundness, and purged
in accordance with the recommendations of BS. 6891.
2.
Purging air from the gas installation may be expedited by
loosening the union on the gas service cock on the boiler
and purging until gas is detected.
3.
Retighten the union and check for gas soundness.
TO LIGHT THE BOILER
1.
Check that all the drain cocks are closed, and any valves in
the flow and return are open.
2.
Check that the gas service cock (B) is OPEN and the boiler
mains on/off switch is OFF.
3.
If the boiler output is to be set to minimum or mid, affix the
appropriate indicator label supplied in the hardware pack to
the data badge, located on the controls support.
4. Fitting the Boiler Casing
Deluxe Model (LX)
- Lift the boiler casing up to the boiler
assembly, with the casing top angled forward. Hook the top
edge of the boiler casing into the channel on the top of the
boiler assembly. Swing the bottom of the casing down until
it is flush with the assembly. Lift the glass fascia and pull the
sliding catch out to retain the glass in the upper position.
Secure with the 2 captive screws. To improve access to the
gas valve, remove the controls casing bottom panel by
removing its 2 retaining screws. Refer to Frame 44.
Standard Model
- The boiler casing must be refitted with
the controls pod casing attached for alignment purposes.
Lift the boiler casing up to the boiler assembly, with the casing
top angled forward. Hook the top edge of the boiler casing
into the channel on the top of the boiler assembly. Swing
the bottom of the casing down and secure with the 2 captive
screws. To improve access to the gas valve, remove the
controls pod casing. Release the controls pod front fixing
screws 3 turns only. Remove the pod by pulling it forward to
43 INITIAL LIGHTING
disengage from the keyhole slots. Refer to Frame 44.
Note. Standard boiler only.
If the Sealed System Unit is
fitted remove the unit casing in order to inspect the top
casing seal.
The casing must seat correctly and compress the sealing
strip to make an airtight joint. Visually check the side
seals but, if side clearances are limited, then check that
the top and bottom edges of the casing are correctly
located.
5.
Slacken the screw in the burner pressure test point (F) and
connect a gas pressure gauge via a flexible tube.
6.
Switch the electricity supply ON and check that all external
controls are calling for heat.
7.
Set the boiler thermostat knob (D) to position 6 and the
boiler Mains on/off switch to ON. The fan will start. After
the fan has run for a few seconds the pilot solenoid valve
should open and the intermittent spark commence,
continuing until the pilot is established. The main burner
will then cross-light smoothly. If this sequence does not
occur, refer to the Fault Finding section.
8.
Test for gas soundness around ALL boiler gas components
using leak detection fluid.
9.
Operate the boiler for 10 minutes to stabilise the burner
temperature.
10.
The boiler is pre-set at the factory to its highest nominal
rating but can be range rated to suit the system design
requirements. Refer to Table 2 (page 3). Remove the silver
threaded protection cap on the top of the regulator. Adjust
the main burner pressure adjuster (E) until the required
main burner pressure is achieved.
11.
Set the boiler mains on/off switch to OFF.
12.
Remove the pressure gauge and tube. Retighten the sealing
screw in the pressure test point.
13.
Turn ON and check for gas soundness at the pressure test
point.
14. Deluxe Model (LX)
Refit the controls casing bottom panel and screws.
Standard Model
Refit the controls pod and tighten the 2 front fixing screws.
15. Deluxe Model (LX)
Lower the glass fascia to its closed position.
Standard Model
.
Close the pod door.
LEGEND
A
Sightglass.
B
Gas service cock.
C
Inlet pressure test point.
D
Thermostat knob
E
Main burner pressure adjuster.
F
Burner pressure test point.
H
Boiler mains on/off switch.
Summary of Contents for Classic FF230
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