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9
TEMP-
HEAT
®
Preliminary Start-Up Steps
•
Check for proper fuel-supply application, connections, and pressure.
•
Check that external regulator has been installed on all natural-gas installations over 4-psi.
•
External regulator must be installed on unit on all propane installations.
•
Purge gas line of air, as necessary.
•
Leak test all gas connections with a 1:3 solution of soap and water.
•
Do not operate unit if leaks are present.
•
Determine that unit is drawing 100% fresh outside air through its intake grill.
•
Check for proper electrical connections and supply voltage.
•
Check that the intake and discharge of unit are free from obstructions.
•
Reset flame-safety control by pressing reset button on control.
•
Reset motor overload.
•
Check control settings:
high-temperature limit switch: 270° F
low-temperature limit switch:
40° F
THP-400A Switch Panel
THP-550 Switch Panel
THP-500A Switch Panel
Note: Other switch panel layouts may be
used depending on application.
Содержание THP-400A
Страница 2: ...THP 400A THP 500A and THP 550 Installation and Service Manual...
Страница 11: ...11 TEMP HEAT Control Vestibule Layout THP 550 Vestibule Layout...
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