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SECTION 6
COMMISSIONING
6.1
Where the text bears identifying numbers in
brackets, refer to figs. 1 and 2 unless other-
wise instructed.
6.2
Gas Supply Installation
Inspect the entire installation including the
meter. Test for soundness and purge, all as
described in BS6891:1988.
6.3
Central Heating Systems
6.3.1
IMPORTANT DO NOT RELEASE AIR FROM
THE RED SEALED EXPANSION TANK. It is
charged with air at the factory from .75 - .80 bar
(11 - 12psig)
6.3.2
Initial filling of the System
6.3.2.1
See 3.4.3.
6.3.2.2
Open central heating flow and return valves.
Unscrew black cap on automatic air release
valve (18) one full turn. (Leave open perma-
nently).
6.3.2.3
Close all air release taps on the central heat-
ing system.
6.3.2.4
Identify the filling/inlet valve found at the base
of the appliance. See fig.6.
The filling loop may have been disconnected
from the filling/inlet valve and heating flow
valve. If so reconnect unscrewing the caps as
necessary.
The filling/inlet valve has 3 positions. (Fig. 20)
i) Vertically up - normal operating position.
ii) Turn to the left to horizontal - closed posi-
tion.
iii) Vertically down - Filling position. To fill,
slowly turn the handle of the filling/inlet
valve from the closed position towards the
filling position. Mains water will be heard to
enter the system/boiler. As the water en-
ters the system/boiler the pressure gauge
will be seen to rise. Pressurise to between
1bar & 1.5bar when the system is cold. DO
NOT OVERPRESSURISE.
Once the desired pressure is achieved
turn the filling/inlet valve back to the closed
position.
6.3.2.5
Starting with the lowest radiator open each air
release tap in turn closing it only when clear
water, free of bubbles, flows out. In the same
way release air from any high points in the
pipework.
6.3.2.6
Continue filling the system until at least 1.0 bar
registers on the gauge then turn the handle of
the filling/inlet valve back to the closed posi-
tion.
6.3.2.7
Inspect the system for water soundness and
remedy any leaks discovered.
Linea Plus AG
Supplied By www.heating spares.co Tel. 0161 620 6677
6.3.3
Initial flushing of Pipework
The whole of the heating system must be
flushed both cold and later hot as detailed in
6.10. Open all radiator or heating valves and
the appliance central heating 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 light-
ing. Refill the boiler and heating system as
described in 6.3.2
6.3.4
Setting the System Design Pressure
6.3.4.1
The design pressure should be a minimum of
1 bar and maximum 1.5 bar.
6.3.4.2
The actual reading should ideally be 1 bar plus
the equivalent height in metres to the highest
point of the system above the base of the
appliance. (Up to the maximum of 1.5 bar
total).
N.B. The safety valve is set to lift at 3bar/ 30m/
45psig.
6.3.4.3
To lower the system pressure to the required
value, pull lever on head of safety valve (14) a
quarter turn to release water until the required
figure registers on the gauge (31).
6.3.5
Filling the Hot Water System
6.3.5.1
Close all hot water draw-off taps.
6.3.5.2
Turn filling/inlet valve to the normal operating
position (vertically up). See fig. 20
6.3.5.3
Slowly open each draw-off until clear water is
discharged.
6.4
Checking Electricity Supply
6.4.1
Carry out preliminary checks for continuity,
polarity, and resistance to earth (see page
61), gaining access as required according to
5.7.2 in this manual.
6.4.2
Leave the appliance with the control fascia
closed and with the mains electricity switched
OFF
6.5
Lighting the Boiler
6.5.1
Ensure flow and return valves are open.
(6.3.2.1)
If external and/or internal controls are fitted
(e.g Timeclock and/or Room thermostat) en-
sure they 'call for heat'. The commissioning of
the appliance may be easier if the external/
internal controls are disconnected and termi-
nals TA & TA are linked. (For access proce-
dure turn off electricity and refer to 5.7.2 for
instructions).
6.5.2
Switch on the mains electricity and turn the on
/ off / mode switch (25) to
6.5.3
Set the c/h control knob (28) to the highest
setting.
6.5.4
The appliance will go through an ignition se-
quence and the burner will light.
17
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