Section 10: Wiring; Line Voltage Thermostat Wiring; Low Voltage Thermostat With One Burner - Roberts Gorden NDUSTRIA NHE Series Installation, Operation & Service Manual

NHE-S I , O
ERIES NSTALLATION PERATION AND

SECTION 10: WIRING

DANGER
Electrical Shock Hazard
Disconnect electric before service.
Heater must be properly earthed.
Failure to follow these instructions can result
in death or electrical shock.
Heaters can be controlled using several methods.
Normally thermostats are used to control the heaters
but they can also be controlled by an Energy

10.1 Line Voltage Thermostat Wiring

120 V-60 Hz
Supply Circuit
L1
L2
Gnd.

10.2 Low Voltage Thermostat with One Burner

120 V-60 Hz
Supply Circuit
L1
L2
Gnd.
56
S M
ERVICE ANUAL
Line Voltage
Thermostat
T
NOTE: Yellow and Purple wires provide 24 VAC to power thermostat
H
Management System. Section 10.1 below illustrates
the connection for heaters controlled by a line voltage
thermostat. NOTE: In order to use line voltage ther-
mostats, the low voltage terminal located at the back
of each burner must be connected as shown in the
detail. For a single heater on a low voltage thermo-
stat, See Section 10.2 below. To control multiple
heaters on one low voltage thermostat, See Page 57 ,
Section 10.3. NOTE: In order to control multiple heat-
ers on one low voltage thermostat, the low voltage
terminals on each heater must be connected as
shown in detail. Heater must be grounded in accor-
dance with applicable codes: United States: refer to
National Electrical Code
Canada: refer to Canadian Electrical Code, CSA
C22.1 Part I - latest revision.If any of the original
internal wiring must be replaced, it must be replaced
with wiring materials having a temperature rating of at
least 105° C and 600 V.
Gnd.
H N H
N
Gnd.
Low voltage terminal detail:
Thermostat: R to Purple wire;
W to Blue wire; C to Yellow wire
NFPA 70 - latest revision
®
Gnd.
N
Low voltage black jumper
wire connected inside all
burners between Purple and
Blue wire; Yellow not used.