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GAS-FIRED BOILER
PART 10: FIELD WIRING – VISION 1
Outdoor Sensor Function The user can pro-
gram the desired supply temperature based on
the heat transmitter (Baseboard, Radiant Floor,
Air Handler) that will be used in the installation.
Once the outdoor sensor (Light Green Wires) is
connected to the control board, the water tem-
perature of the boiler will adjust to run the boil-
er more efficiently and provide greater comfort
to the living space.
Connection Specification – Wire 22 AWG
maximum to 100 feet or 18 AWG up to
150 feet. Length of wire run cannot
exceed 150 feet.
Outdoor Sensor is connected on the terminal
strip in the junction box on the Munchkin Boiler.
Route wires from the Munchkin Boiler terminal
strip to your outdoor sensor, which will allow
the control to change the temperature going to
the Central Heating loop automatically. Place the
outdoor sensor preferably to the north or north-
west or to the side which will be affected by
changing weather conditions outside. NOTE: Do
not locate the sensor in the direct sunlight.
CAUTION
The wire to outdoor sensor must not be laid
closer than 6' to line voltage wiring (120/240 V)
and must never be in the same conduit.
Indirect Sensor Function: The run time on
priority function for the Super Stor Ultra Indirect
Fired Water Heater is from 0-60 minutes, and
can also be adjusted by the installer with the
control panel. The water temperature can be
adjusted when using a sensor only (not a
mechanical control). Temperature adjustments
are from 95 to 185 degrees, plus a differential of
1-18 degrees (Note: It is recommend that you
do not exceed 5 minutes on the DHW pump
post purge cycle to avoid cooling down your
DHW tank).
Indirect Sensor is connected to the terminal
strip on the Munchkin Boiler. Route wires from
the terminal strip to the sensor or to a mechani-
cal control Honeywell Part # L4080b-1395 (Not
included in Vision I Package). Install the sensor
into the control well located in the front of the
water heater. This will allow the installer to con-
trol the temperature of the indirect water heater
from the Munchkin Boiler and give the water
heater priority over the Central Heating Circuit.
Once the Water Heater is satisfied, the boiler will
then switch back to the Central Heating Circuit
only if there is a call for heat, otherwise the
Munchkin Boiler will then shut down.
Connection Specification for Pumps and
Alarms – Wire 18 AWG minimum. Length of
wire run cannot exceed 100 feet.
Indirect
Circulator
function: The indirect water heater circulator
output program function will automatically start
when the water heater sensor reads a call for
heat, the installer can program the post purge
function on the circulator. The Post purge
circulator function time ranges from 0-30
minutes.
Indirect Circulator (P2) is connected to the
terminal strip in the junction box on the
Munchkin Boiler. Run the wire from the Super
Stor Ultra Indirect circulating pump. The purple
wire will be your neutral lead and the pink wire
will be your hot. This will supply 120 volts to the
water heater circulator directly.
Fault Code Alarm Function
If there is a lockout fault present on the
Munchkin Boiler Control, a 120 volt output is
activated. This is useful when you have a remote
display that will notify you of a fault condition or
if you have auxiliary equipment that needs to
shut down in the event of a lockout.
Fault Code Alarm Function
Connect the fault annunciator or lights to the
alarm output on the Munchkin Boiler terminal
strip and the incoming neutral line in the junc-
tion box. NOTE: The annunciator or light must
be rated for 120 volt ac. To use devices with rat-
ings other than 120 volt ac a relay may be
employed.
CAUTION
Do not tie neutrals or hot wire leads to any
o t h e r w i r e s , g o d i r e c t l y f r o m t h e
Munchkin Boiler controller to the circulator.
Boiler Manual
(P2)
Program
52
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