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Mersey Super - Installation & Service Instructions
NO OR LOW WATER
FLOW RATE
HIGH WATER FLOW
RATE
HIGH WATER
TEMPERATURE
Page 19
FAULT FINDING - Page 20
SYMPTOM
LOW WATER
TEMPERATURE
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
4. Automatic gas valve push rod
jammed. May also cause a high
water rate.
5. Slow ignition screw incorrectly
set. Will also cause a high water
rate.
1. Blocked water filter.
2. Heat exchanger blocked with
lime.
3. Loss of service water main
pressure.
See LOW WATER
TEMPERATURE
1. Automatic gas valve push rod
sticking. Water rate will be normal.
POSSIBLE CAUSE
1. Gas pressure too low.
2. Faulty diaphragm. Will also
cause a high water rate.
Page 31 of 35
10/17572.
4. Dismantle clean and
regrease using Dow Corning
111 silicone grease. Handle
the push rod with care, do
not bend.
5. See
Fig. 16 for the
position of the screw.
Turning the screw clockwise
delays the ignition, anti-
clockwise advances the
ignition. The screw should
be set 2 full turns out (anti
clockwise) from the fully in
position. When correct the
burner ignition should be
smooth and quiet when a
water outlet is opened.
1. Clean the debris from the
filter.
2. Descale or replace - Part
No 10/17558.
3. Contact your Local Water
Authority.
1. Dismantle clean and
regrease using Dow Corning
111 silicone grease. Handle
the push rod with care, do
not bend.
SOLUTION
1. Check and clean gas
filter, also check gas inlet
pressure.
2. Replace the Diaphragm
Assembly - Part No
10/17572.
09/12/2009
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