55
GAS-FIRED BOILER Boiler Manual
PART 12. START-UP PROCEDURE (CONTINUED)
PART 13: START-UP PROCEDURES WITH THE VISION 1
Function Value
d5 — Actual Temperature from the outdoor
sensor. (Vision option.)
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 — Actual Status of the Central Heating
Circulator Off = |0|, On = |1|. (Vision
option.)
d9 — Actual Status of the Indirect Fired
Circulator Off = |0|, On = |1|. (Vision
option.)
d10 — Actual Status bus communication
|co| = connected, |no| = not connected
d11 — Central Heating Set Point
d12 — Power On Hours in units
d13 — Total Central Heat Hours
d14 — Total Indirect/dhw Hours
d15 — Passed Ignition Attempts
D. TEST MODE
This function is intended to simplify the gas valve
adjustment if needed. Listed below are the rec-
ommended limits on each Munchkin Boiler and
the Combustion Settings. Automatic modulation
does not take place when the controller is in Test
mode, only temperature limitation based on the
Munchkin Boiler Central Heating 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/Program} key together for 1 second. Once
activated, you will see in the display {Ser}and the
actual fan speed. The measurement of the com-
bustion levels should always be taken at the high-
est and lowest fan speed. After 10 minutes, the
Test mode stops automatically. To exit Test Mode
press {S1/
-
}and {S2/+} key together for 1 second.

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The Vision I option allows the user to have one
temperature for central heating and another
temperature for the Super Stor Ultra Indirect
Fired Water Heater. This allows the user to
increase the temperature supplied to the Super
Stor Ultra indirect water heater to get a fast
recovery by prioritizing the flow at a higher tem-
perature than may be needed for the Central
Heating Circuits (this will require two separate
circulators). Once the Super Stor Ultra Indirect is
satisfied, the Vision I system will switch back to
the Central Heating Circuit to continue to heat
the living space at a temperature based on out-
side temperature. This gives you a higher com-
fort level and further increases the efficiency of
the Munchkin Boiler.
A. PROGRAMMING THE VISION I OPTION
The Vision I allows the installer to set system
limits and the heat curve for the Munchkin
Boiler. These system limits should not be
changed by the user. It is important to document
your settings within this manual after you pro-
gram the sytem parameters so this will be
recorded for future reference.
B. VISION 1 PROGRAM ACCESS
To start, press down and hold the {S/3} and {S/4}
simultaneously for three seconds. You will notice
that the display will change to |000|. Then, with
your {S1/-}key on the display press down until you
see |925|. This is the pass code. To confirm that
Fig. 12-1