Commissioning; Pre-Commissioning Checks; Filling The System - Worcester Greenstar FS 30CDi Installation, Commissioning And Servicing Instructions

COMMISSIONING

External diverter valve(s) and all other 230V parts are
not supplied with the boiler.
Refer to manufacturers instructions when connecting external parts to
the wiring centre.
Worcester, Bosch Group cannot be held responsible for wiring errors.
Do not
remove link
ST8
A
F
1
ST19
2
4
B
B
F F N L
R S P P
High level
sensor
Condensate
pump
3.
EARTH =
E
LIVE =
NEUTRAL =
SWITCHED LIVE =
2.
EXTERNAL CONTROLS WIRING CENTRE
CONNECTION TO THE BOILER
ST10
L N N L L
S S R
E
Fig. 28 PCB connections
5 COMMISSIONING
5.1

Pre-commissioning checks

CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE
STARTING ANY WORK AND OBSERVE ALL RELEVANT
SAFETY PRECAUTIONS.
Check that the service and water pipes are connected to the correct
valve on the manifold;
A - CH flow (28mm)
B - Gas inlet (22mm)
C - CH return (28mm)
Check all system and boiler drain points [1] are closed.
Check the gas type specified on the identification plate matches that
of the gas supply:
– Turn on the main gas supply and purge the gas supply [2] to the
boiler ensuring that the room is well ventilated.
– Test the gas supply for tightness as described in
BS 6891.
Check the condensate pipe work [3] is correctly fitted and
connected.
24
ST8
ST10
ST6
ST25
1.
230V
ST10
L N N L L
S S R
L
E
N
CIRCULATING
PUMP
ST25
E
L
N
Wiring centre
M M
15 20 25
10 30
L N
E
Boiler demand
Check the flue [4] is correctly fitted and the connections are secure.
Refit inner combustion cover [5] and secure with four screws [6].
NOTICE: If the boiler is not to be commissioned
immediately then:
after successfully completing all of the checks and any
rectification work, shut off the gas supply and
electrically isolate the boiler.
Complete the installation part of the Guarantee
Registration Card.
6
5
3
2
A B
28mm 22mm
Fig. 29 Pre-commissioning checks
5.2

Filling the system

Open all the system and radiator valves.
Turn on the water main stop cock.
Open vented system only
Turn on the water to the system header tank and allow the system to
fill.
Sealed System
Locate the pressure gauge externally on the system;
Fill the system to 1 bar pressure via a WRAS approved filling link.
Vent all radiators, retighten when completed.
Check the system and rectify any leaks.
Greenstar FS CDi
4
1
C
28mm
ErP
6720818079 (2016/04)