Commissioning; Pre-Commissioning Checks; Condensate Connection; Filling The System - Bosch Worcester GREENSTAR CDi CLASSIC REGULAR ErP Series Installation, Commissioning And Servicing Instructions

5

COMMISSIONING

5.1

Pre-commissioning checks

CAUTION: Isolate the mains gas supply 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)
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.
3. Check that the condensate pipe has been connected to the adapter
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

Condensate connection

Never terminate or discharge into any open source, including; sink,
bath, shower, bidet, toilet etc.
Any external condensate pipe work of excessive runs
should be protected with weather resistant insulation to
help prevent freezing.
▶ Ensure that the condensate drain is 22mm diameter plastic pipe. It
must fall at least 52mm per metre towards the outlet
A 22mm adaptor pipe is contained in the fitting pack.
Refer to figure 44, condensate connection:
1. Align the installation side plastic pipework through the pre-plumbing
manifold.
2. Connect the installation side plastic pipework to the end of the
condensate hose.
3. Push the plastic pipework inside the condensate hose at least
25mm.
Fig. 44 Condensate connection
6 720 815 723 (2015/05)
5.3

Filling the system

1. Ensure all system and boiler drain points are closed.
2. For sealed systems fill the system using a WRAS approved filling loop
to a pressure of 1 bar.
3. Vent all radiators and primary side of the hot water cylinder.
4. Refill the system up to 1 bar.
GAS SUPPLY
▶ Open gas cock on the boiler and purge the gas supply to the boiler
ensuring that the room is well ventilated.
▶ Test gas supply for soundness as described in BS 6891.
6 720 812 174-17.1O
COMMISSIONING
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