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BEFORE ATTEMPTING TO START THE HEATER,
READ THE TYPICAL SEQUENCE OF OPERATION
AS SHOWN BELOW:
Typical Sequence of Operations Note:
This
sequence is written for only the burner safety and
operating portion of the heater. Other control systems
for dampers, mixing boxes, and temperature controls
are included in the unit typical sequence of operation
and/or wiring diagram:
1. With main supply air fan(s) on, thermostat setpoint
calling for heat, and all switches and operating
controls in their normal position, the heater will go
through a pre-purge sequence. Pre-purge timing is
not adjustable and is approximately 10 seconds.
2. With pre-purge timing complete, the pilot solenoid
valve and ignition transformer are energized. The
pilot fl ame will be established and sensed by the
fl ame sensor.
3. Ignition transformer is de-energized and pilot valve
remains on.
4. Main fuel valve(s) will open. The main burner fl ame
will be established.
5. Once the thermostat is satisfi ed, the pilot and main
fuel valve(s) will be de-energized. Main supply
fan(s) will continue to run.
Check Safety Shutdown Performace
WARNING: Fire or explosion hazard. Can
cause property damage, severe injury or death.
Perform the safety shutdown test as part
of Start-Up procedure and any time work is
performed on the gas system.
NOTE: Read steps 1 through 7 before starting,
and compare to the safety sutdown or safety
lockout tests recommended for the intermittent
pilot (IP) ignition module. Where diffferent, use the
procedure recommended for the module.
1. Turn off gas supply.
2. Set thermostat or controller above room tempera-
ture to call for heat.
3. Watch for ignition spark following prepurge. See IP
module specifi cations.
4. Time the length of the spark operation. See the IP
module specifi cations.
5. After the module locks out, open the manual gas
cock and make sure no gas is fl owing to the pilot or
main burner.
6. Reset the fl ame safeguard relay (RE-02).
7. Operate system through one complete cycle to
make sure all controls operate properly.
Suggested Control Settings
(Refer to Digital Control System user manual for default settings)
TS-02 Space Temperature Sensor ...... Customer Discretion
KP-01 Keypad/Display Module ............ Customer Discretion
MP-05 Damper Control Potentiometer ... Customer Discretion
MP-15 Unit Enable Potentiometer ....... Customer Discretion
PS-04 Low Gas
Pressure
Switch
......................................... 1.0"
W.C.
PS-07 High Gas
Pressure Switch ........ 125% above burner fi ring rate
PS-12 Clogged Filter Switch ............Adjust to fi eld condition
PT-13 Building Pressure Transducer ... Adjust to fi eld condition
FL-02 High Temperature Limit (Manual) ................... 185° F
Suggested Tools and Instruments
Volt/Ohm Meter
Thermometer
Tachometer Ammeter
Manometer (0-10" W.C.)
Microammeter
Standard Hand Tools
D.C. Volt Meter
Gas Pressure Gauge (0-35 lbs.)
BACview 6
This equipment has been electrically and fi re tested
prior to shipment. However, during transit control
setpoints can change, and wiring can come loose. Do
not assume controls are defective until all associated
setpoints and wiring are checked.
If you do not have the optional BACview 6 (KP-01)
keypad display it will be diffi cult to troubleshoot
any alarm that may occur on the unit. To reset
most alarms on the I/O Zone 583 Controller (UC-01)
without a BACview 6 keypad display, simply turn
the power off and back on at the unit disconnect.
If you have a BACview 6 keypad display the alarm
can be reset remotely or at the I/O Zone 583
Controller.
