
C
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INSTALLATION & SERVICING INSTRUCTIONS
27
PRE-COMMISIONING CHECKS
6-720-611-730b (12.05)
PRE-COMMISIONING CHECKS
CAUTION: ISOLATE THE MAINS SUPPLIES
BEFORE STARTING ANY WORK AND
OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
1 Check that the service and water pipes are
connected to the correct valve on the manifold;
A - CH flow (22mm)
B - DHW flow (15mm)
C - Gas inlet (22mm)
D - Mains water inlet (15mm)
E - CH return (22mm)
2 Check the gas type specified on the
identification plate matches that of the gas supply.
Turn on the main gas supply, check the gas
pipework, connections and rectify any leaks.
3 Check the flue is correctly fitted and the
connections are secure.
4 Check the condensate pipework is correctly
fitted and connected.
5 Check the CH circulating pump is set to 3.
Note: The CH circulating heating pump is preset
to number '3' and should not be altered. The
diagram opposite shows the pump output.
IMPORTANT: If the boiler is not to be
commissioned immediately then:
after successfully completing all of the
checks and any rectification work, close the
water valves, shut off the gas supply and
electrically isolate the boiler.
Complete the installation part of the
Guarantee Registration Card.
1
3
4
5
200
0
0
Bar
Litres per hour
0.6
0.5
0.4
0.3
0.2
0.1
400
600 800 1000 1200 1400 1600
2
A
B
C
D
E
22mm 15mm 22mm 15mm 22mm