Worcester WR325 RSF Installation And Servicing Instructions page 11

10.3 GENERAL FITTING
Check that the appliance carton contains: Appliance, installer's
instruction pack, gas and water fittings, wall plate, user's
information pack and installer's hardware pack.
Check that the position chosen for the appliance is in accordance
with the instructions given in Sections 4 and 5.
For vertical flue installation, refer to the instructions supplied
with the vertical flue kit.
Mark the position of the fixing holes and the position of the flue
hole centre line onto the wall see fig. 2.
Side Flue - Extend the horizontal flue central line from Fig. 2
along the appropriate wall. Check that it remains horizontal and
measure 180 mm upwards and mark a horizontal line. Measure
75 mm from the junction of the walls and mark a vertical line,
which will then give the position of the flue hole in the side wall.
Drill the four fixing holes 60mm deep for No. 12 size plugs. Cut
the flue duct hole at 110mm diameter (150mm dia. for internal
fitting). Ensure that the hole is horizontal through the wall.
Fix the top wall plate and check that it is horizontal before
tightening the screws.
Lift the appliance onto the top mounting plate. Make up the gas
and water connections ensuring that the face to face joint rings
are correctly located.
If the air and flue duct assembly is to be fitted from inside the
room then the ducts must be cut to length, assembled and
inserted through the wall at this stage before fitting the flue elbow
and adapters to the appliance. Refer to Section 10.4 following
for the assembly of the air and flue ducts.
10.4 AIR AND FLUE DUCT PREPARATION AND ASSEMBLY
Before starting the installation, instal the adaptor supplied with
the appliance.
5
1 - Adapter, boiler to
turret
2 - Clamping ring
3 - Fixing screws
4 - Flue locking screw
5 - Inner flue connection
Supplied By www.heating spares.co Tel. 0161 620 6677
(lowered position)
(raised position)
4
Fig. 7
Check the contents of the standard flue duct kit against the
packing list. Similarly check the extension duct kits if applicable.
Remove all the packing from the ducts and terminal assembly.
The standard flue kit is telescopic, and requires no cutting
providing that the total length of the flue assembly is 500mm
long measured from the appliance casing to the outer wall face.
See dimension L, Figs. 8 and 9. When dimension L is greater
than 500mm extension flue assemblies will be required.
It will not be necessary to cut either the ducts attached to the
turret or the terminal unless L = 500mm to 600mm.
Measure and cut the air and flue ducts to length ensuring that
the cuts are square and free from burrs. Always check the
dimensions before cutting the ducts.
All extension duct dimensions refer to the straight lengths. The
socketed ends must not be removed or included in any
measurement.
10.5 EXTERNAL FITTING OF THE DUCT ASSEMBLY
Measure distance L.
RH Side flue duct length = L + 70 mm.
LH Side flue duct length = L + 250 mm.
Rear flue duct length = L + 155 mm.
Do not cut either the turret or the terminal assembly ducts unless
L =500 to 600mm.
1) Should L = 500 to 600mm then cut the terminal assembly
ducts reducing the length of the ducts to 200mm. Then cut each
extension to 200mm (see fig 15). Assemble the flue as described
below ensuring the correct length (L + 70 mm for RH side flues,
L + 250 mm for LH side flues, or L+ 155 mm for rear flues).
Fig. 8
Fig. 9
Fig. 10
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