
ETL File 3028821
34
Rev. A 2002
WIRING DIAGRAM CONT’D
CB-3
CB-2
CB-1
R1
R2
R3
1
3
5
2
6
4
CONTACTOR # 1
CONTROLS ELEMENTS
1,2 & 3
LANG MODEL LRO 1E
HEATER CIRCUIT
CB-6
CB-5
CB-4
R4
R5
R6
7
9
11
8
12
10
CONTACTOR # 2
CONTROLS ELEMENTS
4,5 & 6
CB-9
CB-8
CB-7
R7
R8
R9
13
15
17
14
18
16
CONTACTOR # 3
CONTROLS ELEMENTS
7,8 & 9
MR2
MOTOR RELAY
NORMALY OPEN
NEUTRAL
120 VAC
MR-7
Heat Call
from
Circuit Board
49
45
Air
Switch
High
Limit