Applied Air IOMDFCDFM-1, Руководство по эксплуатации

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Honeywell Flame Safeguard Control
A keyboard display module (Honeywell #S7800A1142)
is recommended to read the fl ame signal, and is a
good troubleshooting device. A V.O.M. can also be
used on the DC voltage test jacks marked “+” and “-”
on fl ame amplifi er.
Open pilot and fi rst main gas shut-off valves slowly .
Last main gas shut-off valve before burner must
remain closed at this time. Reset high-low gas pres-
sure switches (if applicable). Check pilot and main gas
lines for leaks using soap solution.
Heat is Enabled By The Following:
MDT And MRT Standard:
To enable the heat, rotate the “Temperature
Setpoint” knob (MP-15) clockwise to the desired
setpoint above the actual air temperature. The
allowable temperature range is 55
o to 90 o F.
MRT-PRO With Smart Room Sensor:
To enable the heat, press the “Warmer” or “Cooler”
button on the face of the remote MRT-Pro room sensor
(TS-02) to the desired room setpoint. Each push of the
button changes the temperature setpoint by 1
o
F. The
setpoint can be changed a maximum of + 10 o F from
the default of 65 o F. Changing the heating setpoint
also changes the cooling setpoint.
MRT Expert or MDT Expert With A BACview (KP-01):
To enable the heat, scroll through the “Setpoints” menu
in the BACview and enter the desired room Heating
Occupied and Unoccupied Setpoints.
Energy Savings Modes:
There are 3 Energy Savings Modes that could
disable the burner.
NOTE: A BACview or PC is required to change
Setpoints. For a more detailed control sequence,
see the Digital Control System Users Manual.
Enable the fans and burner, then reset burner relay
(RE-02).
Unit will run for 10 seconds before ignition trial, if all
safety and limits are made.
NOTE: Do not leave the Run/Test switch on the
fl ame safeguard relay (RE-02) in the test position
during (PFEP) for more than 60 seconds. This will
cause the control program to go into a Burner
Status Alarm. This alarm can be reset by recycling
power to the unit.
CAUTION: You will have approximately three (3)
minutes before the unit shuts down on Freezestat
(Low Discharge Temperature), if you have
disconnected plug wires TS-01 and TS-03. Referred
to in Section X.
NOTE: 3 OR 4 TRIALS MAY BE NEEDED TO
PURGE AIR FROM PILOT LINE. IF BURNER HAS
MAIN FLAME ROD OR SCANNER, YOU WILL NEED
TO DISABLE TIMER CIRCUIT (RE-75).
NOTE: Pilot regulator adjustment may be needed if
the adjustment of the needle valve does not yield
the required reading. Typical adjustment of the
needle valve is 1-1/2 to 2 turns open. Watch D.C.
voltmeter carefully. The reading should be steady
and between 2.0 to 5.0 volts D.C. If the reading is
too low, slowly turn the needle valve in or out until
satisfactory readings are obtained.
When pilot is adjusted, shut the burner off by disabling
the fans and heat.
Setting Main Flame
Reconnect power to main fl ame sensor (RE-75) if
applicable. Install manometer at test port on the last
tee of the burner manifold, or MR valve test port. Make
sure the Run/Test switch on (RE-02) is in the run
position.
Slowly open all manual gas shut-off valves.
Enable fan and heat. After “pilot proven”, main gas
valve opens and burner lights.
Adjust high fi re pressure reading (from manometer) to
match Normal Manifold Pressure fi ring rate shown on
unit rating plate. Take care not to damage optional lube
lines.
Refer to Valve Adjustment instructions in Section X
for setting high and low fi re gas pressure settings.
The high fi re setting must be made before adjusting
low fi re. Adjust the high fi re setting according to the
Maxitrol Valve Adjustment instructions in Section X.
The high fi re setting
must not exceed the pressure
stated on the rating plate.
When adjusting low fi re, there should be a
continuous fl ame along the entire burner length
without any blowout spots.
Main burner fl ame
sensor must be activated, if applicable. Burner must
hold in low fi re for approximately 10 seconds before
modulating up.
Check fl ame signal with burner cycling through full fi ring
range and burner profi le damper operation (if applicable).
Cycle pilot and burner several times to insure smooth
light off.
There should be a continuous spark for ten (10)
seconds with pilot gas supply turned off.
Check pilot and main gas lines for leaks.
Main fl ame is now set. Make sure burner modulates
and turn thermostat to the desired setting.