Technical data

12
Important:
- If this procedure is not carried out properly, the boiler
will go into safety lock-out until all of the air has been
purged.
- When venting air from boiler, do not touch the
schrader valve on the expansion vessel, it is NOT a
vent.
- Before starting the boiler, turn the pump impellor to
make sure it is free to move.
• Unscrew black cap on front of pump.
• Using screwdriver, push in pump spindle and turn
pump impellor 3 to 4 times. DO NOT HIT SPINDLE. Re-
place black cap.
Starting the boiler
Before starting the boiler check that:
- The gas meter tap is open. If using Butane or Pro-
pane, check that valve on storage cylinder or tank is
open.
- You have removed the two fan transit clips from fan.
The commissioning and first firing of the boiler must
only be done by a competent person.
Gas installation
It is recommended that any air is purged from the
supply at the gas inlet test point on the left hand
side of the gas valve, see diagram 14.
- The boiler gas service cock is open.
- The boiler is connected to the electrical supply and
switched on.
- The front casing is fitted.
First starting up
• Following the instructions given in the 'User Instruc-
tions' set boiler to run in central heating mode.
• Set boiler thermostat for maximum temperature
ensure timeclock is "ON" and check that any exter-
nal controls, if fitted, are calling for heat.
• Allow the temperature to rise to the maximum
value, with all radiator valves open.
The temperature rise will cause release of the gases
contained in the water of central heating system.
- Gases driven towards the boiler will be automati-
cally released through the automatic air vents.
- Gases trapped at the highest point of the system
must be released by bleeding the radiators.
Diagram 14
Filling the system
Open isolating coks to boiler
(see diagram 7a)
Sec 058
6
Sec 058
Make sure that
pressure gauge
reads between 1 and
2 bar. Re-pressurise
system as necessary.
5
Open various
hot water taps to
bleed system.
Ins 062
Ins 061
4
Bleed each radia
tor until a continu-
ous jet of water is ob-
tained.
2
3
Open the tap on the sys-
tem filling loop and fill the
system until the pressure
indicated on the display
is between 1 and 2 bar.
Undo, but do not
remove, cap on
automatic air
vent on top of
pump. Do not re-
tighten cap.
Reg
008
mec 117
1
COMMISSIONING
INSTALLATION INSTRUCTIONS