Commissioning; Pre-Commissioning Checks; Filling The System - Worcester 29CDi GC 47-406-34 Installation, Commissioning And Servicing Instructions

COMMISSIONING

5 COMMISSIONING
5.1

PRE-COMMISSIONING 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
position on the manifold.
A - CH flow (22mm)
B - CH return (22mm)
C - Gas inlet (22mm)
D - DHW outlet (15mm)
E - Cold water inlet (15mm)
1.
A D C
22mm 15mm 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 pipe
work, connections and rectify any leaks.
2.
F
30
E B
15mm 22mm
3. Check that the pressure relief connector, located on the right hand
side at the bottom of the wall frame, is in the up position.
3.
Stop in
locked
position
4. Check that the condensate pipe has been connected to the adaptor.
4.
NOTICE: 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 and electrically
isolate the boiler.
5.2

FILLING THE SYSTEM

1. Ensure all system and boiler drain points are closed.
2. Remove the bottom panel (if fitted).
3. Ensure that the white plastic control tap (C) on the charging link is
turned fully into its closed position.
4. Open the isolating valves on both the cold water inlet and CH return
connections.
5. Insert the charging key (D) (situated in its storage position (E) on the
bottom cover of the boiler) initially aligning the arrow on the key with
the "unlock" symbol on the charging link body. Ensure that the key is
inserted fully and turn to the "lock" position. Check that the key is
secure.
6. To fill the system from the cold water inlet turn the white plastic
control tap (C) on the charging link to the fully out position.
7. Once the system has been filled to a pressure of 1bar turn the white
control tap (C) to its closed position.
8. Vent all radiators, retighten when completed and check the system
and correct any leaks.
• The boiler integral expansion vessel is precharged to 0.75 bar (equal
to a static head of 7.5 meters [22ft]). A Schraeder type valve is fitted
to the expansion vessel to allow for pressure adjustment if required.
• If an extra expansion vessel is fitted to the central heating return,
adjust to the same pressure as the appliance internal expansion
vessel, refer to separate instructions with the extra expansion vessel.
6720647361-20.2Wo
6 720 803 599 (2012/06)