45
E. TEST MODE
This function is intended to simplify the gas valve adjustment if needed. Listed below are the recom-
mended limits on each heater and the combustion settings. Automatic modulation does not take place
when the controller is in Test mode, only temperature limitation based on the heater set point. The user
will be allowed to increase or decrease the fan speed by pressing in either the {S1} or {S2} keys.
To activate the Test Mode simply press the {S2} and {S3} key together for 1 second. Once activated, you
will see in the display {Ser} and the actual fan speed. The measurement of the combustion levels should
always be taken at the highest and lowest fan speed. When in Test Mode, the heater’s limit will shut down
the burner if temperature limit is exceeded. It is recommended to draw water out of the tank to lower
temperature so tests can be performed.
After 10 minutes, Test Mode stops automatically. To exit Test Mode manually, press {S1} and {S2} key
together for 1 second.
COMBUSTION SETTINGS
HIGH FIRING RATES and LOW FIRING RATES ON ALL MODELS
0 – 10 ppm 0 – 20 ppm 0 – 10 ppm 0 – 20 ppm
9 – 10.5% 9 – 10.5% 9.5 – 11% 9.5 – 11%
Table 9
Table 10
F. MAINTENANCE
The control system requires no periodic maintenance under normal conditions. However, in unusually
dirty or dusty conditions, periodic vacuuming of the cover to maintain visibility of the display and indicators
is recommended. In dirty environments, such as construction sites, care must be taken to keep the
appliance burner cover in place and drywall or saw dust away from appliance.
In unusually dirty or dusty conditions, care must be taken to keep appliance burner door in place.
Failure
to do so VOIDS WARRANTY!
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