14
Mynute
5.1
GAS SUPPLY INSTALLATION
Inspect the entire installation including the gas
meter, test for soundness and purge. Refer to BS
6891 for specific instruction.
5.2
THE HEATING SYSTEM
The appliance contains components that may
become damaged or rendered inoperable by oils
and/or debris that are residual from the installa-
tion of the system, consequently it is essential
that the system be flushed in accordance with the
following instructions.
5.3
INITIAL FILLING OF THE SYSTEM
Ensure both flow & return service valves are
open, remove appliance casing as described in
4.7.1, identify the automatic air release valve and
loosen the dust cap by turning cap anti-clockwise
one full turn. IMPORTANT, THERE ARE NO
MANUAL AIR RELEASE VALVES LOCATED
ON THE APPLIANCE. Ensure all manual air
release valves located on the heating system are
closed. Using the method of filling as described in
fig. 5, slowly proceed to fill the system. As water
enters the system the pressure gauge will begin
to rise. Once the gauge has reached 1bar close
the filling valve and begin venting all manual air
release valves, starting at the lowest first. It may
be necessary to go back and top-up the pressure
until the entire system has been filled. Inspect the
system for water soundness, rectifying any leaks.
SECTION 5 COMMISSIONING
5.4
INITIAL FLUSHING
The whole of the heating system must be flushed as
detailed in 5.8. Open all radiator or heating valves and
the appliance flow & return service valves. Drain the
boiler and system from the lowest points. Open the
drain valve full bore to remove any installation
debris from the boiler prior to lighting. Refill the
boiler and heating system as described in 5.3.
5.5
PRE-OPERATION CHECKS
Before attempting to initial lighting of the appli-
ance, the following checks must be carried out:
●
ensure all gas service valves from the meter to
the appliance are open and the supply pipe has
been properly purged;
●
ensure the proper electrical checks have been
carried out (see 7.7), particularly continuity,
polarity and resistance to earth;
●
ensure the 3 amp fuse – supplied with the
appliance – has been fitted;
●
ensure the system has been filled, vented, and
the pressure set to 1 bar;
●
ensure the flue system has been fitted properly
and in accordance with the instructions;
●
ensure all appliance service valves are open.
5.6
INITIAL LIGHTING
Ensure the electrical supply to the appliance is
switched on. Switch the time clock or programmer
to an ‘on’ position and ensure all external controls
Fig.15
4.7.3
CONNECTING THE MAINS (230V) INPUT (see
fig. 16)
Remove the terminal block cover as described in
4.7.2. Pass the cable through the cable anchorage
(see fig. 6). On the terminal block there are 7
terminals from Right to Left, they are:
1 LIVE
2 NEUTRAL
3 230V output
4 230V input
5 (spare)
6 (spare)
7 (spare)
8 (spare)
Connect the supply cable wires (live & neutral)
to their corresponding terminals on the
appliance terminal block. Connect the EARTH
wire to the EARTH block (see fig. 16) ensuring
that it’s left slightly longer that the others, this
will prevent strain on the earth wire should the
cable become taut.
Do not remove the link wire (between 3 & 4)
unless additional external controls are to be fitted
(see section 8). Re-fit the appliance terminal
block cover.
The securing screw on the cable anchorage
should now be tightened. This must be done
before the control fascia is re-fitted in the upright
position. The appliance casing and screws can
now be re-fitted.
Fig. 16
Appliance
terminal strip
