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14
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 and return service valves are
open, remove appliance casing as described in
4.8.1, 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 1 bar 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.
5.4
INITIAL FLUSHING OF THE SYSTEM
The whole of the heating system must be flushed
both cold and hot 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
FILLING THE HOT WATER SYSTEM
Close all hot water outlets, turn appliance stop-
cock on (anti-clockwise), slowly open each outlet
until all air has been expelled and clear water is
discharged. Check pipe-work etc. for water
soundness.
5.6
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;
SECTION 5 COMMISSIONING
●
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.
5.7
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
are also calling for heat.
The appliance will now operate in the pre-heat
mode as described in 1.2. Once the pre-heat
function has been completed, the appliance will
operate in the central heating mode as described
in 1.4. Should the appliance fail to ignite, refer to
5.6 and/or section 7 (fault finding).
5.8
FINAL FLUSHING OF THE HEATING SYSTEM
The system shall be flushed in accordance with
BS 7593. If a cleanser is to be used, it shall be
from a reputable manufacturer* and shall be
administered in strict accordance with the
manufacturers instructions.
*Both Sentinel and Fernox manufacture products
that have proved suitable for use with Vokera
appliances. Vokera Ltd. cannot comment on the
suitability of any other such product with our
appliances.
5.8.1
INHIBITORS
See 3.12
5.9
OPERATING PARAMETERS
The Eclipse boiler is supplied with built-in
parameter defaults (see 2.11), the following
procedure can be used if any parameters require
to be adjusted or changed.
●
Press the MODE button until a FIXED decimal
point appears in LED 1 (see fig. 16).
●
Press the STEP button until the desired
parameter is shown in LED 1.
●
Using the +/- buttons, change the parameter
value (shown in LED 2).
●
Press the STORE button to save the new value.
●
Press the MODE button until no decimal point
is shown.
Fig. 16