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Function Value
d1/
Actual Temperature from outlet sensor
d2/
Actual Temperature from inlet sensor
If using a standard mechanical control, the control will display |0| for closed and | 1 | for
d3/
open. If the tank sensor is connected to the SuperStor storage tank, it will measure the
actual temperature
d4/
307 (Not used)
d5/
NC (Not used)
d6/
Actual Fan speed multiplied by 10 (example: If fan speed displayed is
410 RPM x 10 = 4100 actual fan speed)
d7/
Actual Ionization current read from Flame Rectification probe
d8/
0 (Not used)
|0| or | 1 | (Not used)
d9/
d10/
NC (Not used)
d11/
32 (Not used)
d12/
Power on in thousands (display will not read until 100 hrs.)
Example : Display x 1000 = Power on Hours
d13/
NA
d14/
Total running hours in thousands
(display will not read until 100 hrs)
d15/
Passed ignition attempts in thousands (display will not read until 100 ignition attempts)
Example: Display x 1000 = Ignition attempts
Example:
12.3 x 1000 = 12300 Ignition attempts
G. TEST MODE
This function is intended to simplify the gas valve adjustment if needed. Listed below are the
recommended limits on each Munchkin Heater and the Combustion Settings. Automatic modulation
does not take place when the controller is in Test mode, only temperature limitation based on the
Munchkin Central Heating set point. The user will be allowed to increase or decrease the fan speed
by pressing in either the { | S 1/-| } or { | S 2/+| } keys.
To activate the test mode, press and hold the { S 2/+} and the { S 3/Program} Key simultaneously. The dis-
play will show the control alternating between { S er} and the fan speed (shown in a multiple of 10).
The measurement of the combustion level should always be taken at the highest fan speed and the
lowest fan speed. Press and hold { S 2} until it reaches the maximum fan speed and take your meas-
urement. Then press and hold { S 1} until it reaches minimum fan speed and take your measurement.
The control will automatically exit test mode in several minutes, if you wish to exit test mode soon-
er, press { S 1/-} and { S 2/+} simultaneously for 1 second.
Carbon CO ppm
Monoxide
Carbon CO
%
2
Dioxide
Fig. 6-1
COMBUSTION SETTINGS — 199 VHW / 399VWH
HIGH FIRING RATES and LOW FIRING RATES ON ALL MODELS
Natural Gas
low
0–20 ppm
70 ppm–135 ppm
8-1/2% – 9-1/2%
8-1/2% – 9-1/2%
START-UP PROCEDURES
high
low
0–20 ppm
9-1/2% – 10-1/2%
Propane LP
high
80–150 ppm
9-1/2% – 10-1/2%
33
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