E93.1001EN.C Manual CD
+
101
14.2
Adjusting in case of a new water heater, or after maintenance (case A)
G
ENERAL REMARK
For all adjusting steps under
A
the measured CO
2
values shall be according table 1 or figures
C
HECKING AND ADJUSTING AT MAXIMUM LOAD
Adjust at maximum load by carrying out procedure 1 on p.103
C
HECKING AND ADJUSTING AT MINIMUM LOAD
Adjust at minimum load by carrying out procedure 2 on p.103
14.3
Adjusting in case of valve replacement or gas conversion (case B)
Maximum fan speed has to be reduced to convert the water heater into a propane or B/P appliance.
Setting parameter P4BD.
G
ENERAL REMARKS
In case
B
, a distinction is made between the setting of water heaters containing a single valve (CD+80-CD+100)
and water heaters with a double valve (CD+120-CD+180).
All adjustments must result in CO
2
according table 1 or figures.
Checking and adjusting at maximum load CD+80 / CD+100
The water heaters CD80 and CD100 all have single gas valves, see the drawings on page 103.
•
First, turn setting screw [2] of the gas valve clockwise until you feel resistance. This means that the valve is
closed,
do not try to tighten the screw any further
.
•
Now turn screw [2] counter clockwise (open), according to the number of turns in table 2 or 3 for the used
water heater and gas type.
After this, adjust at maximum load by carrying out procedure 1 on page 103.
If the burner doesn’t start up in service mode, turn screw [2] a quarter turn counter clockwise open, and try again.
C
HECKING AND ADJUSTING AT MINIMUM LOAD
CD+80
/
CD+100
Adjust at minimum load by carrying out procedure 2 on page 103.
IMPORTANT: Toggle between high fire and low fire to make fine-tuning adjustments (adjusting the minimum set-
ting affects the maximum setting and contrariwise).
In case of gas conversion, paste the corresponding
sticker at the appropriate position in the water
heater and mark the square for the used gas type.
Also mark the square, indicating that the correct
value has been set for parameter P4BD.
(In the example on the right, ‘propane’ and ‘P4BD =
1’ have been marked).
For adjusting double gas valves CD
+
120 / CD
+
150 / CD
+
180 see next page
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