Instruction manual

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 position on the
manifold.
A - Flow (22mm)
B - Return (22mm)
C - Gas inlet (22mm)
2 Check the gas type specified on the
identification plate (F) matches that of the
gas supply. Turn on the main gas supply,
check the gas pipework connections and
rectify any leaks.
NOTE: Do not use solvents, adhesive or
lubricant when pushing the pipe
onto the rubber connector.
3 Check that the condensate pipe has been
connected to the preplumbing manifold
connector.
4 Check pressure relief drain pipe (H) is
correctly fitted and securely tightened.
IMPORTANT: If the boiler is not to be
commissioned immediately then:
after successfully completing all of the
checks and any rectification work,
close the gas and water valves, shut off
the gas supply, electrically isolate the
boiler and label appropriately.
C
2
3
F
22mm 22mm 22mm
A C B
H
PRE-COMMISSIONING
CHECKS
A
B
1
A
B
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 12i/24i System
8 716 115 167b (03/2009)
31
PRE-COMMISSIONING CHECKS
Condensate pipe
Preplumbing manifold
connector
H
COMMISSIONING