Detroit Radiant Products Company QTD Series - Manual (Page 31)

QTD Series
31
Figure 3.22 • Alternate Field Wiring Diagram • Single Unit operation on a Single 24V Control*
3.0 Installation • Electrical Requirements • Field Wiring
* NOTE: In order for the unit to operate with this configuration, the Dual Pole, Dual Throw Switch must be
toggled to the 24VAC OUT position. (See Detail ‘A’)
24V Yellow Control Cord
Green: Common
White: Low Fire
Black: High Fire
N
L1
PANEL
GROUND
120V BLACK
POWER CORD
24V YELLOW
CONTROL
CORD
Low Fire Common High Fire
G
W
BK
G
W
BK
NOTE: STAGE 1 IS THE
HIGHER TEMPERATURE
SETPOINT AND STAGE TWO
IS THE LOWER TEMPERA-
TURE SETPOINT
24V OUT - STAGE 1
(LOW FIRE)
24V OUT - STAGE 2
(HIGH FIRE)
24V IN
BURNER BOX
INSIDE SERVICE PANEL DETAIL ‘A’
CONTROL VOLTAGE SELEC TOR 24VAC IN 24VAC OUT
CONTROL VOLTAGE SELECTOR
24VAC
IN
24VAC
OUT