QTD
Series
30
3.0
Installation
•
Electrical Requirements
•
Field Wiring
WARNING
!
Electric Shock
Field wiring to the radiant tube heater must be connected and grounded in accordance
with national, state, provincial and/or local codes. In the United States refer to the most
current revisions to the ANSI/NFPA 70 Standard and in Canada refer to the most current
revisions to the CSA C22.1 Part I Standard.
Wiring
Figure 3.21
•
Field Wiring Diagram
•
Multiple Unit operation on a Single 24V Control*
N
L1
N
L1
P
D
0
P
D
T
D
P
D
0
P
D
T
D
T
T
Q
D
0
T
T T
P
T
P T
T
PP
NOTE: T
T
T
P
T
TP
T
D
T
T
T
T
P
T
TP
T
24V OUT - STAGE 1
LOW FIRE
24V OUT - STAGE 2
HIGH FIRE
24V IN
24V Yellow Control Cord
Green: Common
White: Low Fire
Black: High Fire
*
NOTE
: In order for the unit to operate with this configuration, the
Dual Pole, Dual Throw Switch must be toggled to the 24VAC IN
position. (See Detail ‘A’)
C
ONT
R
OL
V
OL
T
A
G
E
S
E
L
E
C
T
OR
24V
A
C
IN
24V
A
C
OUT
INSIDE SERVICE PANEL
DETAIL ‘A’
CONTROL VOLTAGE SELECTOR
24VAC
IN
24VAC
OUT
