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Function
Temperature Set Point
Differential Set Point
Temp. Measurement
Water temperature over 125 degrees F. can cause severe burns
instantly, or death from scalds. Children, disabled, and elderly
are at highest risk of being scalded. See instruction manual
before setting temperature at water heater. Feel water before
bathing or showering! Temperature limiting valves are available.
F. STATUS MENU
Installers are also able to check the current status of the Munchkin parameters by pressing
key for 3 seconds. Once activated, the display will show
perature. Actual values are displayed for each function. To view the next value simply press the
key to go to the next displayed value. Listed below are the values which can be displayed. These val-
ues cannot be changed. To exit this menu, simply press
Function Value
d1/
Actual Temperature from outlet sensor
d2/
Actual Temperature from inlet sensor
d3/
N/A
d4/
N/A
d5/
N/A
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/
N/A
d9/
N/A
d10/
N/A
d11/
N/A
d12/
power on in 1,000 units
d13/
N/A
d14/
Total Running Hours in 1,000 units
d15/
Total number of ignition cycles in 1,000 units.
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
To activate the Test mode simply press the
activated, you will see in the display
combustion levels should always be taken at the highest and lowest fan speed. After 10 minutes, the
Test mode stops automatically. To exit Test Mode press
Set Point Adjustment
Display
dd
dh
t
Fahrenheit to Celcius
DANGER
100 hrs = 0.1 / 1,000 hrs = 1.0
3,000 hrs = 3.0
S1/-
or
S2/+
keys.
S2/+
Ser
and the actual fan speed. The measurement of the
START-UP PROCEDURES
Default Setting
Range of Adjustment
119° F
8° F
d1
alternating value of the actual outlet tem-
S3/Program
key to resume normal operation.
and
S3/Program
key together for 1 second. Once
S1/-
and
S2/+
95° F/185° F
1–18° F
F or C
S4/Reset
key together for 1 second.
S/4
31
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