P/N 471438
Rev. A 2-4-2000
COMMISSIONING
FILLING THE SYSTEM
1.
Ensure all power is off and all external controls are off.
2.
Open all supply and return valves.
3.
Fill heating system to minimum operating pressure.
4.
Purge air from all system pipe work recharging the system to the minimum operating pressure.
INITIAL FIRING
Before commissioning the appliance, the whole gas installation, including the meter, MUST be pre-purged and
tested for gas soundness in accordance with BS 6891:1988.
Important: Open all doors and windows, extinguish naked flames and DO NOT SMOKE whilst purging the gas
line.
Before commencing the commissioning procedure, ensure that the gas service cock is turned on, electricity supply
is isolated.
1.
Be sure that the system has been adequately vented of air and is water - tight.
2.
Connect an accurate manometer to the Gas Valve outlet connection.
3.
Open gas shut-off valve.
4.
Following appropriate lighting instructions in the users section of this manual, checking that the burner
setting pressure is as detailed on the appliance database and specification sheets of this manual.
If burner pressure requires adjustment, the adjuster location is shown for the specific appliance category,
below.
IMPORTANT NOTE
Adjustment of the setting pressure for category
I
2E+
must only be done with the main burners off
following removal of the sealing cap. Always replace the sealing cap before refiring, checking for gas
soundness with leak detection fluid.
GAS CONTROL ASSEMBLY
Installation Section / Commissioning
17
CATEGORY I
2E+
UNITS.
( ILLUSTRATION SHOWS MILLIVOLT VALVE )
( ILLUSTRATION SHOWS AUTOMATIC VALVE )
BURNER MANIFOLD
INLET PRESSURE
INLET PRESSURE
BURNER PRESSURE
ADJUSTER
GAS CONTROL
GAS PRESSURE
PILOT
KNCB
BURNER PRESSURE
GAS PRESSURE
ADJUSTER
ADJUSTER
PIPE
PILOT
2
3
2
3
E
P
B/P
