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