45
GI-IM048En-1013
Figure 25 -
NOTE: The maximum tank temperature is 160
o
F (71
o
C), independent of all settings described above.
E. TEST MODE
This function is intended to simplify the gas valve adjustment if needed. Listed below are the recommended 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 one (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 ten (10) minutes, Test Mode stops automatically. To exit Test Mode manually, press
{S1}
and
{S2}
key together for one (1)
second.
COMBUSTION SETTINGS
HIGH FIRING RATES and LOW FIRING RATES ON ALL MODELS
NATURAL GAS
PROPANE LP
Low High Low High
Carbon Monoxide (CO%)
0 – 10 ppm
0 – 20 ppm
0 – 10 ppm
0 – 20 ppm
Carbon Dioxide (CO
2
%)
9 – 10.5%
9 – 10.5%
9.5 – 11%
9.5 – 11%
Table 11
FAN SPEEDS
BTU
IGNITION
MIN
MAX
100,000 3,000
2,000
5,700
130,000 3,000
2,000
7,300
160,000 3,000
2,000
7,450
199,000 3,000
2,000
9,100
Table 12
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 water heater burner cover in place and drywall or saw dust away from water heater.
‘‘DU’’ setting
Function 11
/ Function 9
Function 8
Function 10
Function 12
Содержание UGC120S-100
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Страница 39: ...39 GI IM048En 1013 D INTERNAL WIRING DIAGRAM Figure 21 Wiring Diagram LP ...
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