Detroit Radiant Products Company QTS Series - Manual (Page 30)

QTS Series
30
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 3.20 • Field Wiring Diagram • Multiple Line Unit on a Single 24V Control*
* 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’)
N L1
N
L1
PANEL
GROUND
120V BLACK
POWER CORD
24V YELLOW
CONTROL
CORD
Call for Heat 24VAC
BURNER BOX
PANEL
GROUND
B
W
G
W
BK
120V BLACK
POWER CORD
24V YELLOW
CONTROL
CORD
B
W
G
W
BK
EXTERNAL TRANSFORMER
REQUIRED (FIELD SUPPLIED).
A 40VA TRANSFORMER IS
SUFFICIENT TO OPERATE UP
TO TEN APPLIANCES.
SINGLE-STAGE THERMOSTAT
W (24V OUT)
RH (24V IN)
EXTERNAL
TRANSFORMER
24V
120V
120V POWER
(OBSERVE POLARITY)
BURNER BOX
Call for Heat 24VAC
24V Yellow Control Cord
White: Call for heat
Black: 24VAO
3.0 Installation • Electrical Requirements • Field Wiring
CONTROL VOLTAGE SELEC TOR 24VAC IN 24VAC OUT
INSIDE SERVICE PANEL DETAIL ‘A’
CONTROL VOLTAGE SELECTOR
24VAC
IN
24VAC
OUT