Commissioning; Pre-Commissioning Checks - Worcester 41-311-67 Installation, Commissioning And Servicing Instructions

5

COMMISSIONING

5.1

PRE-COMMISSIONING CHECKS

CAUTION: ISOLATE THE MAINS
ELECTRICITY SUPPLY BEFORE STARTING
ANY WORK AND OBSERVE ALL RELEVANT
SAFETY PRECAUTIONS.
Check that the service and water pipes are connected to
the correct position on the manifold.
1.
2.
Fig. 55 Pipe fittings
Ensure that the washers have been fitted to the water
connections and the bonded washer to the gas
connection on the manifold.
1. - CH Flow (22mm)
2. - Gas inlet (22mm)
3. - CH Return (22mm)
B Check the gas type specified on the identification
plate (1), on the inside of the flap, matches that of the
gas supply.
Fig. 56 Identification plate
6 720 644 743a (2010/10)
B Turn on the main gas supply, check the gas pipe work,
B Check that the condensate pipe (1) has been
3.
Fig. 57 Syphon connection
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B Referring to figure 58, check pressure relief drain
Fig. 58 Pressure relief drain pipe
1
connections and rectify any leaks.
connected to the syphon.
pipe (1) is correctly fitted and securely tightened.
NOTICE: If the boiler is not to be
commissioned immediately then, after
successfully completing all of the checks
and any rectification work:
B Close the gas valve
B Close the water shut off valve
B Isolate the gas supply
B Isolate the electricity supply
B Label appropriately
COMMISSIONING
1
4
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