Tamarack Industries Thawzall HEATZONE TCH250, Руководство оператора

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OPERATING STATES, cont.:
IGNITION CARRYOVER
Once flame is established, the igniter remains on for 10 additional seconds to ensure flame stability
before shutting off
RUN
The flame is sustained until the call for heat is satisfied or safety limit shuts down burner
MOTOR-OFF DELAY (post-time)
•
If applicable, the oil solenoid valve is de-energized and the motor continues to run for the preset
motor-off delay time. Cools the nozzle to prevent after drip, and expels fumes and combustion
•
If the cad cell detects flame in the Motor-Off Delay mode, the control goes into the standby mode.
This is to prevent a failed fuel valve from keeping the flame burning
LOCKOUT—the control has shut down the burner for one of the following safety reasons:
•
Trial for ignition (lockout) time expires without flame being established
•
Cad cell detects flame at the end of valve-on delay
•
Recycle time budget expires
•
Relay check failure
•
You can
NOT
reset the control by interrupting line voltage
RECYCLE
If the flame is lost while the burner is firing, the control shuts down the burner, enters a 60 second
recycle delay, and repeats the ignition sequence. The control will continue to recycle each time the
flame is lost, until it reaches a preset cumulative trial for ignition time allotment. The control will
then go into Hard Lockout instead of recycle. This feature prevents excessive accumulation of oil in
the appliance firing chamber.
PUMP PRIME
•
Enter Pump Prime mode by holding down the reset button while in the trial for ignition until the
control powers down the equipment. Then oppress the reset button again to enter Pump Prime
mode
•
The igniter and motor are on 4 minutes, and the cad cell is disregarded. This allows the technician
to prime the pump without having to jumper the cad cell
•
Terminate the call for heat and the control will exit the pump prime mode and resume normal
operation.
•
You can remove the control from the Pump Prime mode by holding the reset button for 1 second. The
control will return to Standby mode.
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