Filter
Top Products
10. To check that the damper blades move smoothly without
binding, carefully turn the minimum position adjusting
screw fully clockwise and then energize and de-energize
terminals “R” to “G”. With terminals “R” to “G” energized,
turn the minimum position screwcounterclockwise until the
desired minimum position has been attained.
11. Replace the filter section access panel.
DISCONNECT SWITCH BRACKET
FOR UNITS WITH OPTIONAL BELT-DRIVE BLOWER
A special bracket for mounting a field-supplied disconnect
switch is provided in each unit ordered with an optional belt-
drive supply air blower. The bracket is shipped inside the
blower compartment taped to the top of the blower housing.
035-12046-003-A-0204
6 Unitary Products Group
FIG. 4 - TYPICAL FIELD WIRING
CONTROL WIRING
REFER TO THE APPROPRIATE
ELECTRICAL DATATABLE TO
SIZE THE DISCONNECT SWITCH,
OVERCURRENT PROTECTION
AND WIRING.
POWER WIRING
RV
YC
GF
R
Y1
B
Y2
COOLING ONLY (24 VOLT THERMOSTAT)
R C
Y
R
Y 1
Y 2
W 1
W
W 2
G
B
G
R H
T H E R M O S T A T
1
T E R M I N A L S
U N IT T E R M IN A L
S T R I P T B 1
2 4 V O L T
T R A N S F O R M E R
C O O L I N G / H E A T I N G ( 2 4 V O L T T H E R M O S T A T )
1
2 4 V O L T T H E R M O S T A T 2 T H 0 7 7 0 1 0 2 4 . IF T H E U N IT H A S A N E C O N O M IZ E R ,
R E M O V E J U M P E R J 1 F R O M T E R M IN A L S 8 A N D
1 0 O N T H E R E L A Y B O A R D
T O P R E V E N T S IM U L T A N E O U S O P E R A T IO N O F T H E C O M P R E S S O R A N D
T H E E C O N O M IZ E R . IF Y O U W
A N T T O C O N T R O L T H E R E C O N O M IZ E R O N A
S E C O N D S T A G E O F C O O L IN G O R H A V E A N D E L E C T R IC H E A T A C C E S S O R Y
W IT H T W O S T A G E S O F H E A T , U S E T H E R M O S T A T 2 T H 0 4 7 1 0 2 4
A D D
J U M P E R
COOLING / HEATING (24 VOLT THERMOSTAT)
R C
R H
Y 1
Y 2
W 1
W 2
G
L E D 1
L E D 2
C O M
A 1
A 2
T
T
B
R
Y 1
Y 2
G
B
X
N
W 2
W 1
T H E R M O S T A T
1
T E R M IN A L S
U N IT T E R M IN A L
S T R IP T B 1
2 4 V O L T
T R A N S F O R M E R
T O R E M O T E S E N S O R
2 T H 0 4 0 7 0 2 2 2 4 IF U S E D
N O T
U S E D
A D D
J U M P E R
A D D
J U M P E R
4
4
3
2
1
E L E C T R O N IC P R O G R A M M A B L E T H E R M O S T A T 2 E T 0 4 7 0 0 2 2 4 ( IN C L U D E S S U B B A S E )
2
S E C O N D S T A G E C O O L IN G IS N O T R E Q U IR E D O N U N IT S L E S S E C O N O M IZ E R .
3
S E C O N D S T A G E H E A T IN G IS O N L Y R E Q U IR E D O N U N IT S W IT H A T W O S T A G E
E L E C T R IC H E A T E R .
4
R E M O V E J U M B E R J 2 F R O M T E R M IN A L S 4 A N D 9 O N J U M P E R P L U G C O N N E C T O R
P 6 O N U N IT S W IT H E C O N M IZ E R . T E R M I
N A L S A 1 A N D A 2 P R O V ID E A R E L A Y
O U T -P U T T O C L O S E T H E O U T D O O R E C O N O M IZ E R D A M P E R S W H E N T H E
T H E R M O S T A T
S W IT C H E S T O T H E S E T -B A C K P O S IT IO N .
2
3
4
COOLING / HEATING (ELECTRONIC THERMOSTAT)
R H
R C
Y
W
G
R
Y 1
W 1
B
G
A D D
J U M P E R
T H E R M O S T A T
1
T E R M I N A L S
U N I T T E R M I N A L
S T R I P T B 1
2 4 V O L T
T R A N S F O R M E R
1
E L E C T R O N IC P R O G R A M M A B L E T H E R M O S T A T 2 E T 0 7 7 0 1 0 2 4 (I N C L U D E S S U B B A S E ) .
I F T H I S U N I T H A S A N D E C O N O M I Z E R , R
E M O V E J U M P E R J 1 F R O M T E R M I N A L S 8 A N D
1 0 O N T H E R E L A Y B O A R D T O P R E V E N T S I M U L T A N E O U S O P E R A T IO N O F T H E
C
O M P R E S S O R A N D T H E E C O N O M IZ E R . I F Y O U W A N T T O C O N T R O L T H E
E C O N O M I Z E R O N A S E C O N D S T A G E O F C O O L IN G , U S
E T H E R M O S T A T 2 E T 0 4 7 0 0 2 2 4 .
C O O L I N G / H E A T I N G ( E L E C T R O N I C T H E R M O S T A T )
S I N G L E S T A G E
COOLING / HEATING (ELECTRONIC THERMOSTAT)