The tube heater must be electrically grounded in accordance with the following codes:
United States:
Refer to National Electrical Code
®
, ANSI/NFPA 70 (latest edition). Wiring must
conform to the latest edition of National Electrical Code
®
, local ordinances, and any
special diagrams furnished.
Canada:
Refer to Canadian Electrical Code CSA C22.1 Part 1 (latest edition).
33
3.0
Installation
•
Electrical Requirements
Electrical Requirements
LS
Series
NOTICE
The LS Series comes standard requiring a 120V connection to the thermostat. An optional 24V internal
relay (24VAO) may be factory installed if the heater is to be controlled via a 24V thermostat. A 40VA
transformer is necessary when using the 24VAO option. The burner control box is equipped with either a
round terminal strip that accepts three (3) 1/4” insulated female spade terminals or a 36” yellow 24V
control wire. Do not supply 120V to the 24V connection.
The 120V supply connection is factory wried with a three-prong pig tail. Refer to LS Series field wiring
diagram (Figure 3.1).
NOTE
: A relay transformer may be used in lieu of the factory installed 24VAO option.
• 120 Volt - 60 Hz GRD, 3-wire.
• 120V or 24V thermostat connection with optional 24VAO.
• Starting current 4.8 amps
• Running current 1.1 amps
WARNING
!
!
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury or death. Read and understand, the installation, operating and
maintenance instructions thoroughly before installing or servicing this equipment. Only
trained, qualified gas installation and service personnel may install or service this
equipment.
Thermostat
NOTE:
Different thermostats operate according to their particular features. Refer to thermostat
specifications for details.