Chromalox PK477 دليل المستخدم

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Installation Instructions 4WT
(Supersedes PK477) PK477
161-506096-001
JUNE, 1995
Type WT Room Thermostat
2.86" 2.14"
(73) (54)
4.72"
(110)
Front View Side View
Specifications — Table A
Temp Maximum Rating
Range Contacts
Model
(°F) 128V AC 208V AC 240V AC 277V AC Pilot Duty
125V AC
WT-121 45-75 SPST 22 amps 22 amps 22 amps 18 amps (use with
or 2640 or 4575 or 5280 or 5000 AC
WT-122 45-75 DPST total watts total watts total watts total watts contactor)
GENERAL
Note: Type WT thermostats are designe

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INSTALLATION 1. Cut lead wires protruding from outlet box approximately 4” 5. Mount the thermostat to the outlet box using the screws pro- 1 from wall surface and strip end insulation /2”. vided. Take care not to push or damage the bimetal sensing ele- 2. Always test the heater circuit for electrical shorts before con- ment during installation. necting the thermostat. 6. Replace the thermostat front cover and knob. 3. Remove thermostat knob and front cover. WARNING: Any knob temperature setting