Detroit Radiant Products Company QTD Series - Manual (Page 5)

Right Panel Left Panel
F/N: LLV3EP2
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
F/N: LLV3EP1
F/N: LLTCL013: Clearance to
Combustibles and Gas Data Label
F/N: LLLOGO11
Logo Label
F/N: LLV2EP9
Electrical Label
(Located inside service panel)
QTD Series Internal Block Wiring Diagram
V1
V2
NC
W (24V IN)
S1
S2
(24V IN) R
GND
GND
DIAGNOSTIC LIGHT
24VAC (FIELD SUPPLIED)
120V/24V TRANSFORMER
LOW FIRE RELAY
TWO-STAGE GAS VALVE SPARK IGNITORS
FLAME SENSOR
PRESSURE SWITCH
HIGH FIRE RELAY
FLAME SENSOR
LINE VOLTAGE 120VAC 60Hz NEUTRAL
Y
BK BK
BK
O
BL
O O
PR PR Y R GY
Y
Y
W
G
BK
BK
BL
W
GY
G
W
BLOWER
MOTOR
HIGH FIRE LOW FIRE
BK BK BK
+
COM NO NC COM NO NC
Circuit Board
Burner Control Box Component Label
(Located inside the service panel)
QTD - 80P
Data on this label is for the model shown on this label. If your heater has been converted,
this information is not accurate. Please contact the factory for assistance.
BURNER COMPONENTS:
For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.
Serial No.: 1001DETRXXXXXX 0001
Gas Valve:
Circuit Board:
Wire Harness:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
Ind. Lights:
Diag. Light:
Transformer:
Fan:
Alt. Fan:
Alt. Fan Usage:
Relay:
Filter:
24 Volt In:
120 Volt In:
Gas In:
Extra VL Orifice:
Production Code:
Version: Stock:
Add-On:
Internal Use Only: HEATER
TYPE: ID:
Tag:
Electric:
Special 1:
Special 2:
Gas:
Air:
C1
C1 C2 C3
None
N/A
QTD-80
3/10
VR9206Q-1028
Fenwal 35-62
Harness
IS22025051F5127
Grey (= / - )
Electrode
Beckett 3DOT
NONE
NONE
40 VA
(Specify TP-#’s)
6041
6051
6035
1254A
3055
6073
N/A
N/A
825
Bay Motor
120V - 60Hz
When Specified
HLRP
NONE
Yellow
Black Cord
7/8” FC Flare
NONE
6015
E
1215
1325
N/A
934
933
83
49
1
TP-204#
TP-3014# -
- Re-Verber-Ray
None -
-
LLWT600 Orifice Type:
QTD Series
5
1.0 Introduction • Data Labels and Their Locations