Worcester 28i Junior Specifications download pdf (Page 13)

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NOTE: READ THIS SECTION FULLY BEFORE COMMENCING THE

INSTALLATION.

11.1 General

The appliance is only suitable for fitting to a sealed system.

The flue must be installed as specified in BS5440:1 and the

current Building Regulations, and, in Eire in accordance with the

current edition of IS813.

11.2 Unpacking

Open the carton and check the contents against the packing list.

11.3 Boiler Preparation

Lift out the wall mounting assembly.

NOTE: The wall mounting assembly can be removed from the

carton

without having to remove the boiler.

11.4 Site Preparation

Check that the correct position for the appliance has been

chosen. Refer to Section 4 and Table 8.

Check that the wall is flat and will support the weight of the

appliance. Refer to Table 4.

11.5 Fixing Holes and Flue Opening

Hold the template against the wall.

Check that the template is level and mark the position of the

upper keyhole fixing holes and the flue opening. Refer to Fig 11.

Mark the centrelines of the pipe connections to aid the pre-

plumbing of the system pipework if required.

Check the position of the fixing points and flue opening before

drilling the fixing holes 60mm deep for the No. 12 size plugs and

cutting the flue duct hole at 110mm diameter [150mm diameter

for internally fitted flues].

11.6 Wall Mounting and Manifold Assembly

Fit the plugs and insert the screws.

Check that all the service valves are closed on the manifold assembly.

Offer the assembly to the wall utilising the keyhole slots and fix

to the wall. Refer to Fig 12 and 15.

Check that the assembly is properly aligned before tightening

the screws.

11.7 Gas and Water Pipes

Fit the appropriate fitting to connect the gas cock to the gas

supply pipe. Refer Fig 13.

Pre-plumbing is not recommended if no movement in the pipes is

available. If it is necessary for any of the pipes to run up the back

of the appliance then they must be arranged to pass each side of

the expansion vessel in the channels provided. Refer to Fig 12.

Pipework must not run horizontally within the limits of the casing.

It is important that the pipes are not fixed near the appliance

using clips that put a strain on the connections.

Before the appliance is fitted to the wall thoroughly

flush the system and mains water supply.

12. Installing The Appliance

Fig. 12. Wall mounting assembly

Fig. 11. Side flue opening

All dimensions in mm

102

203

1. Wall mounting frame assembly

2. Relief valve

3. Relief valve drain connection

4. System connection

5. Manifold assembly

6. Spring clip

7. Expansion vessel

8. Expansion vessel charging point

9. Filling Loop (optional extra)

10. Channels for system pipes

11. Flexible connector from pump

( SECURE IN POSITION WITH SPRING CLIP )

12. Lower fixing screws (2)

13. O-Ring

14. Washers

IMPORTANT

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