Commissioning; Pre-Commissioning Checks - Worcester Greenstar Ri Compact ErP Installation, Commissioning And Servicing Instructions

COMMISSIONING

Greenstar wiring centre connection
This method is particularly suited to replacing existing boilers where
additional wiring would otherwise be required to a standard system
wiring centre, existing wiring can be used to make the BUS connection.
The BUS is a low voltage communication cable and must not be run
alongside 230V cables in order to avoid interference.
The connection to the mains power, pump and valves may differ
depending on the system installed. The following description is a
suggestion on how to carry out the electrical connection of the module.
DANGER: Risk of electric shock
If the heating system is wired in such a way that the
Greenstar wiring centre and the boiler have separate
points of isolation, then:
▶ Attach a warning label to each point of isolation. This
label has to advise that this is not the sole point of
isolation and also has to identify the location of the
other point of isolation.
▶ Electrically isolate the boiler and system
components. Secure against unintentional re-
connection and ensure that the power supply is
disconnected.
4
20
15 25
10 30
M
1
5
2
BUS
120/230VAC
. . . . .
1 2
N L
Fig. 42 Example Greenstar wiring centre
[1] Fused spurs
[2] Greenstar wiring centre
[3] Greenstar boiler
[4] External controls
[5] External devices
NOTICE: External devices
▶ External diverter valve(s) and all other 230V parts
are not supplied with the boiler.
▶ Refer to manufacturer's instructions when
connecting external parts to the wiring centre.
▶ Worcester, Bosch Group cannot be held responsible
for wiring errors.
30
3
1
BUS
120/230VAC
. . . . .
1 2 N L
6 COMMISSIONING
6.1

Pre-commissioning checks

WARNING: ELECTRIC SHOCK
▶ ISOLATE THE MAINS SUPPLIES BEFORE STARTING
ANY WORK AND OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS
▶ Check that the gas service pipe and water pipes are connected to the
correct position on the manifold.
1. Gas inlet (22mm)
2. Flow (22mm)
3. Return (22mm)
1
Fig. 43
▶ Check the gas type specified on the identification plate matches that
of the gas supply.
▶ Turn on the main gas supply, check the gas pipe work, connections
and rectify any leaks.
NOTICE: Do not use solvents, adhesive or lubricant
when pushing the pipe onto the rubber connector.
▶ Check that the condensate pipe has been connected to the siphon.
▶ Ensure that the condensate pipe has been inserted at least 25mm
into the elbow
Fig. 44 Condensate connection
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 and water supply and
electrically isolate the boiler.
Greenstar Ri Compact
2 3
25mm
ErP 6720813282 (2015/07)