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18. WIRING DIAGRAM: 24V OR 120 VOLT THERMOSTAT OPERATION
Each tube heater requires 120V, 60 HZ electrical power sized for 145VA. The heater includes
a 24V/120V relay switch . Maximum power flow for internal 24V burner components is 21VA.
The heater must be electrically grounded in accordance with the National Electrical Code.
ANSI / NFPA 70 or current Canadian Electrical code CSA C22.1.
A maximum night set-back of 9°F (5°C) is recommended for optimum economy and comfort.
To maintain satisfactory comfort levels do not turn off the heating system over night/weekends.
SINGLE HEATER PER THERMOSTAT
(Multiple Heaters per Thermostat—next page)
Maximum Power Flow = 21VA
37
STW-JZ / IW I&O Manual
IM101229
RL: 12B- BA
RD: AUG 2013
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