Worcester Highflow 400 RSF Installation And Servicing Instructions page 44

Fig. 47. Water to water heat exchanger.
Note: Screw Nos. 1 2 , 5 6 7 8 , 11 12
unscrew two full turns Ð Do not remove.
Screw Nos. 3 4 (Refer to Fig. 31) 9 10,
13 14 15 remove and retain.
6
7
9
Ease heating return
pipe downwards 10mm
into slip-joint in bottom
manifold. Ease pipe to
the left to clear top
manifold. Ease pipe
upwards 10mm approx.
to clear top manifold
and remove
6
7
9
2
10
1
13
10
8
Water filter primary system
12
11 14
Bottom
manifold
Warning: There will be a small quantity of
water remaining in the pipework and water-
to-water heat exchanger.
Ease top manifold downwards
10mm approx. to clear
pipework
8
Top manifold
Support
bracket
9
ÒOÓ ring
seal
5
13
11
Front view of water to water heat exchanger
with manifolds in position and fixing screws
numbered
44
Unscrew flat face union securing top
manifold to inner casing pipework.
Remove sealing washer.
Slip
joint
6 7 8
Water-to-
water heat
exchanger
15
12 14
10
2
ÒOÓ ring
seal
Heating
return
pipe
Slip joint
1
5
Drain pipe
securing
clip