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Do not operate heater at voltages in excess of that stamped on
the heater since excess voltage will shorten heater life.
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do
so could result in personal injury or property dam-
age. Heater must be installed by a qualified person
in accordance with the National Electrical Code,
NFPA 70.
ADH-005, ADHT-005, ADH-010, ADHT-010,
ADH-015, ADHT-015, ADH-020, ADHT-020,
ADH-025, ADHT-025, ADH-030, ADHT-030,
ADH-035, ADHT-035 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
ADH-040, ADHT-040, ADH-045, ADHT-045,
ADH-050, ADHT-050, ADH-060, ADHT-060,
ADH-080, ADHT-080, ADH-090, ADHT-090,
ADH-100, ADHT-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ADH-005, ADHT-005
1 Circuit, 3 Elements per Heater
AL1
AL2
AL3
Circuit A
ADH-020, ADHT-020
1 Circuit, 12 Elements per Heater
Circuit A
ADH-030, ADHT-030
1 Circuit, 18 Elements per Heater
Circuit A
OPERATION
MAINTENANCE
WIRING DIAGRAMS
ADH-010, ADHT-010
1 Circuit, 6 Elements per Heater
AL2
Circuit A
AL1
AL2
AL3
AL1
AL2
AL3
4
1. Periodically clean terminals and terminal covers of dust and corro-
sion to maintain good electrical connections and to permit rapid
heat dissipation. Use airblast, and be careful to avoid damage to
mica insulation.
2. Check for loose terminal connections. Tighten as necessary.
ADHT-120, ADH-144, ADHT-160, ADH-162,
ADHT-180, ADH-216F, ADHT-240F, ADH-270F,
ADH-300F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
AL1
AL3
Circuit A
ADH-025, ADHT-025
1 Circuit, 15 Elements per Heater
Circuit A
ADH-035, ADHT-035
1 Circuit, 21 Elements per Heater
ADH-015, ADHT-015
1 Circuit, 9 Elements per Heater
AL1
AL2
AL3
AL1
AL2
AL3
AL1
AL2
AL3
Circuit A
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