Temp-Heat THP-400A, Инструкция по установке и обслуживанию

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TEMP- HEAT ®
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5
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15
9
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10
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13
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12 10
When the main safety switch, SW-01 is turned ON, power is supplied:
— to the line side of the motor starter, ST-01,
— to the primary side of the power transformer, TR-01, and
— from the secondary side of the power transformer to the FU-02 control fuse, located
on the transformer.
Terminal 1 receives 120-V power from the FU-02 control fuse.
Terminal 2 is neutral.
Terminal 3 receives power from Terminal 1 through the blower switch, SW-07.
Terminal 5 receives power from Terminal 3 through the low-temperature limit
control, TS-07.
Note: The low-temperature limit control is a timed thermostat that allows the heater
to run for 3-min. If the discharge sensor bulb, located in the discharge-air stream,
does not meet the 40° F minimum temperature setting of the control, the unit shuts
down, and the amber low-temperature alarm light, LI-01, glows.
To Reset: Turn blower switch OFF, wait 45 seconds, and turn back ON.
Terminal 6 receives power from Terminal 5 through Tip Over Switch
Terminal 7 receives power through the burner switch, SW-06.
Terminal 8 receives power from Terminal 7 through the supply-fan motor starter.
With proper airflow through unit, Terminal 8 supplies power to Terminal 9 through
the airflow switch, PS-01.
Terminal 15 receives power from Terminal 9 through the high-temperature limit
switch, TS-04.
Terminal 10 receives power from Terminal 15 through the cabinet high-temperature
switch, TS-08.
Terminal 10 supplies power to Terminal 6 within the flame safety control,
RE-07. Internal circuitry energizes Terminals 4, 8, 9, and 10 within the control.
Terminal 8 of the flame safety control supplies power to Terminal 13, energizing the
pilot-gas valve, VA-03, and the main-gas valve, VA-01.
Note: If pilot flame is not present, the flame safety control locks out, illuminates the
red flame light, and the control must be reset.
Terminal 10 of the flame safety control supplies power to Terminal 12, energizing the
ignition transformer, TR-03.
Terminal 9 of the flame safety control supplies power to Terminal 11, energizing the
second-main gas valve, VA-02
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3
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1 3
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11 9
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8
THP-500A Sequence of Operation
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