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GAS-FIRED BOILER Boiler Manual
PART 12. START-UP PROCEDURE
(CONTINUED)
A. OPERATING INSTRUCTIONS
Remove boiler cover. If you smell gas, STOP.
Follow listed safety instructions. If you do not
smell gas, follow the next steps.
1. Turn on all electric power to appliance.
2. Adjust the temperature setpoint of the
Munchkin Boiler if desired. The factory
default setting is 180°. If changes are
ncessary follow “Adjusting The Munchkin
Setpoint” in this section.
3. Set the thermostat to the desired setting.
4. If the appliance fails to start, refer to the
Troubleshooting section in the back of this
manual.
B. ADJUSTING THE SETPOINT
1. Before you can change the temperature from
the factory setting of 180 degrees. You must
make sure that none of the thermostats are call-
ing for heat. The controller will not memorize a
program setting while in a heating cycle. To
adjust the temperature to the Munchkin simply
press in the {S3/Program} key for three seconds
until you see a flashing (C) then an alternate
value of (180). This number is the factory set
point of the unit, which is 180 degrees. To
change the temperature, simply push either the
{S1/
-
} or {S2/+} on the display. The {S1/
-
} button
will decrease the temperature while the {S2/+}
will increase the temperature of the Munchkin.
The temperature of the boiler can be set as low
as 50 Degrees and as high 180 Degrees. These
ranges are your maximum and minimum ranges
of the boiler. In addition to changing the tem-
perature you are also allowed to change three
more settings in this model (1. Munchkin differ-
ential – 2. Indirect setting (with Vision System)
– 3. Celsius to Fahrenheit measurement. Simply
press in the {S3/Program} key to get to next value,
the Munchkin Boiler differential setting will
appear in the display ch and alternating value of
30. This allows the installer to adjust the activa-
tion of the burner based on the differential tem-
perature setting of the Munchkin. The burner
will not start until the outlet water temperature
reaches a temperature that is equal to the tem-
perature setting for the Munchkin Boiler, minus
the differential EX: The Boiler is set to heat at
180° F degrees and the differential is set at 30° F.
The burner will not start until the outlet temper-
ature of the system reaches 149° F degrees (180°
– 30° F = 150° F). To adjust, press either {S1/
-
}
(Decrease Value) or {S2/+} (Increase Value)
Ranges 5° F to 30° F. Press the {S3/Program} key
again and you will see the Indirect Setting de
and an alternative value
of 119
(with Vision
Systems) To adjust, press either {S1/
-
} Decrease
Value) or {S2/+} (Increase Value).
The final adjustment in this mode is the Fahrenheit
to Celcius measurement. Press the {S3/Program}
key again and you will see t and alternating value
of F
. To change value press the {S1/
-
} or {S2/+} to
choose the correct measurement.
C. STATUS MENU
Installers are also able to check the current status
of the Munchkin Boiler parameters by pressing
{S4/RESET} key for 3 seconds. Once activated, the
display will show |d1| alternating value of the actu-
al outlet temperature. Actual values are displayed
for each function. To view the next value simply
press the {S/4} key to go to the next displayed
value. Listed below are the values which can be
displayed. These values cannot be changed. To
exit this menu, simply press {S3/Program} key to
resume normal operation.
Function Value
d1 — Actual Temperature from outlet sensor
d2 — Actual Temperature from inlet sensor
d3 — If using a standard mechanical control,
the control will display |1 | for closed |0|
for open
If the sensor is connected to the
SuperStor Indirect Fired Water Heater
it will measure the actual temperature.
(Vision option.)
d4 — Not used
DANGER
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.