Prv Pre-Plumbing Connection Preparation; Preparing The Service Valves; Fitting The Sealing Washers; Hanging The Appliance - Worcester Greenstar 4000 Installation And Maintenance Instructions Manual

PRV pre-plumbing connection preparation

The PRV elbow has been designed to also be SimpleSwitch to the i Junior
and Si boilers. The PRV pre-plumbing connector can be routed to the
right (approx.45°) to line up with pre-existing PRV pipework from i Junior
and Si boilers.
▶ Connect PRV pre-plumbing connector to pre-existing PRV installation
pipework
▶ Fit the PRV pre-plumbing connector [2] to the PRV locator bracket
[1] as shown in the figure 48.
– The elbow (PRV pre-plumbing connector) [2] is supplied with the
appliance.
Once the wall frame has been mounted the PRV discharge pipe can
be fitted.
▶ Connect the PRV discharge pipe [3] to the PRV pre-plumbing
connector [2].
▶ The discharge pipe [3] can be routed as required.
The PRV locator bracket [1].
▶ This bracket must be removed before the appliance is hung on the
wall frame.
2
3
2
3
Fig. 48 PRV connection preparation
5.3

Hanging the appliance

NOTICE
Transport protection covers
▶ Remove any internal transport packaging and protection covers from
the appliance where applicable.
Before hanging the appliance
▶ Install any accessories to the mounting frame before continuing.
▶ Ensure the sealing washers are fitted to the appropriate service
valves before installing the appliance onto the mounting frame.
▶ Ensure that the control panel is in its closed position before lifting the
appliance.
Greenstar 4000 – 6 720 891 162 (2020/09)
1

Preparing the service valves

The bonded washer supplied is for the Gas connection only.
▶ Fit the sealing washers to the service valves before hanging the
appliance.
1
A
Fig. 49 Fitting the sealing washers
[1] Central Heating Flow (22mm)
[2] Gas Inlet (22mm bonded washer)
[3] Central Heating Return (22mm)
[A] Position for optional integral diverter valve kit, Cylinder Flow
connection (15mm).
[B] Position for optional integral diverter valve kit, Cylinder Return
connection (15mm).
Installation
3
2
B
37