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HL2
Series
Figure 3.36
•
Alternative Wiring Diagrams
A. Micro 60U-24 Ladder Diagram - With Relay Board
L1
120VAC
1
STAGE
2-STAGE T'STAT
(FIELD SUPPLIED)
24VAC
120VAC
120/24VAC
TRANSFORMER
(FIELD SUPPLIED)
B. Micro 60U-24 Block Diagram - With Relay Board
24V
1
2
STAGE
2-STAGE T'STAT
(FIELD SUPPLIED)
R
W
STATUS
LIGHT
120/24VAC
TRANSFORMER
(FIELD SUPPLIED)
L1
120VAC
N
BK
RELAY BOARD
O
Y
R
THERMOSTAT
PRESSURE
TERMINAL
SWITCH
R
APS
2
LIGHT
BK
GY
LIGHT
BK
BK
BK
G
GAS VALVE
Y
O
R
T'STAT
TERMINAL
RELAY
BOARD
O
BL
G
G
G
MICRO 60U-24
IGNITION MODULE
BK
W
120VAC
TRANSFORMER
BL
24VAC
O
BL
PR
PR
PK
PK
G
G
R
G
W
G
STATUS
LIGHT
(FIELD SUPPLIED)
R
PR
PR
PRESSURE SWITCH
APS (N.O.)
PK
PK
BK
Y
BL
G
TRANSFORMER
W
W
BK
BK
BK
W
BK
BK
BLOWER
(FIELD SUPPLIED)
49
3.0
Installation
BK
W
Y
IGNITOR
G
W
BK
BLOWER
BK
BK
W
W
BK
MICRO 60U-24
IGNITION
MODULE
GY
BK
FLAME
ROD
HI
M
C
C
IGNITOR
GAS VALVE
•
Wiring
N
FLAME
ROD
BK
INDICATOR
LIGHTS
BK
BK
BK
G
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