Mounting Orientation - Emerson White-Rodgers 50D50-801 Instructions D'installation

INSTALLATION
Mounting and Wiring
NOTE
All wiring should be installed according to local and national
electrical codes and ordinaces.
1. Disconnect electrical power and gas supply to unit
2. Remove unit access panel
3. Mark and disconnect all wires from the existing control
4. Remove existing control
5. Insert the B key
6. Refer to Table 1 for final mounting orientation of new control
7. Follow steps in Table 2 to mount new bracket and control
8. Refer to the wiring diagrams to connect new control to unit
Table 1
Replacing Robertshaw Ignition
G20/G20R
Replacing JCI Ignition
G20/G23
G26
Replacing a Robertshaw Ignition control
735L (18G91) or 745 (97H04) Lennox G20/G20R
M V
V A
L
3/16" 3/16"
Spade Spade
Main Main Valve/
Valve
Pilot Valve
Furnace Gas Valve
2

Mounting Orientation

Terminals to the left
Mounting Orientation
Terminals to the left
Terminals to the bottom
50D50
P T
V R
3/16" 1/4"
Spade Spade
vent switch
*G20/G20R furnace
units only
Pilot
Valve
Pin # 7
J20/P20*
*J20/P20 not available on G20R furnace
Table 2
Lennox G23 & G26-75
Remove the existing
mounting bracket and
install New Mounting
Bracket
Install 50D50-801 Control
Lennox G20
Install Mounting Bracket to
existing unit bracket
Install 50D50-801 Control
Lennox G26
(except G26-75)
Install New Mounting
Bracket to existing unit
bracket
Install 50D50-801 Control
C
-
801
T G F L
L E
H N
Y A
D
D
1/4" 1/4" 1/4"
Spade Spade Spade
1/4"
FLAME
Spade
Furnace
blocked
Flame
Sensor
Ground wire
assembly
Figure 1 Mounting Holes
C-C1
D-D1
Figure 1 Mounting Holes
B-B1
D-D1
Figure 1 Mounting Holes
A-A1
E-E1
E
1
D
1
B
1
A
1
C
1
E
D
A B
Figure 1
S
P
A
R
K
1/4"
Spade
Spark Electrode
Use Screws
2x 1/2 in.
2x 3/4 in.
Use Screws
2x 1/2 in.
2x 3/4 in.
Use Screws
2x 1/2in
2x 3/4 in
WIRING