Slant/Fin Prodigy 21 KC-45, Instruction Manual

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PART 3: OPERATION PROCEDURES
INDICATOR LIGHT PANEL
STEP 1: SET UP MEASURING EQUIPMENT
BOILER STATUS
POWER DIAGNOSTIC FULL REDUCED
FUEL UTILIZATION RATE
Figure 17: Indicator Lights Identification
LED indicator lights provide important information about
boiler operation at a glance. When the CAL/OP selec-
tor switch (see Step 1 below) is UP in the OP position,
the lights indicate as follows:
Power Indicator (RED): Steady ON means there is elec-
trical power to the boiler. Light will come on when power
is provided to boiler.
Diagnostic Indicator (RED): Steady ON or intermittent
flashing indicates a system operation problem.
Full Rate Indicator (AMBER): Steady ON means boiler is running in high-fire mode. Light will come on when
the boiler starts up; will go off when boiler switches to
low-fire mode or shuts off.
Reduced Rate Indicator (GREEN): Steady ON means
the boiler is running in low-fire mode. Light will come on
when boiler automatically switches to low-fire mode; will
go off when boiler returns to high-fire mode or shuts off.
Note: When the CAL/OP selector switch is DOWN in the
CAL position, the amber and green lights indicate pres-
sure switch closure at high and low blower speeds.
A differential pressure gage is necessary to calibrate
the blower speed and the gas valve to assure the prop-
er air-gas ratio when the boiler is operating.
CALIBRATION EQUIPMENT:
Pressure measurement fittings: There are 3 service
fittings with caps provided on this boiler for convenient
calibration of the air/gas ratio and input in the field.
See Figure 18 for the location of each.
Pressure measurement gage: Magnehelic or Incline
differential pressure gage with 0 - 1.0" w.c. range and
0.02" increments recommended.
Available from Slant/Fin is a calibration gage kit (part
number 665185) that has a gage mounted on a stand
with a “toggling” feature which allows the user to switch
between the blower and gas valve calibration without
moving the tubing connections.
Tubing and connectors for gage: Need 2 lengths of
3/16" I.D. plastic tubing with female adapters which
mate to the service fittings.
• Mount gage securely, within reach of all tubing. Make
sure it’s level so the meter indicates “zero” or can be
adjusted to do so. HI/LO sides marked on the gage.
• Calibration also requires using boiler Operation
Selector Switches and Blower Speed Adjustment
Pots, located on the Electronic Boiler Control Board
(see Figure 19).
Figure 18: Locations of Pressure Measurement Fittings
LO
HI
FT1 FT2 T1 T2 A1 A2
A
U
T
O
/M
A
N
C
A
L
/O
P
L
O
/H
I
Operation Selector Switches
Blower Speed Adjustment Pots
Figure 19: Electronic Boiler Control Board
Switch # Position Operation Description
1 Down AUTO Automatic Boiler Operation
1 Up MAN Manual Boiler Operation
2 Down CAL Calibration Procedures -
Blower Runs Gas Valve
WILL NOT OPEN
2 UP OP Normal Boiler Operation
3 Down LO Low Fire Operation
3 Up HI High Fire Operation
Operation Selector Switches