York SUNLINE PLUS D2EG 048 - Manual (Page 5)

DISCONNECT SWITCH BRACKET FOR UNITS
WITH OPTIONAL BELT-DRIVE BRACKET
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.
Install the bracket on the left hand side of the unit as shown in
Figure 9. Several existing screws at the top of the unit and one
approximately midway down from the top will be used for
mounting the bracket. Screws should be loosened only - NOT
REMOVED. Mounting holes in the bracket have elongated
keyways allowing easy installation. Re-tighten screws after
bracket is in place to ensure panels will remain leak tight.
GAS PIPING
Proper sizing of gas piping depends on the cubic feet per hour
of gas flow required, specific gravity of the gas and the length of
run. “National Fuel Gas Code” Z223.1 should be followed in all
cases unless superseded by local codes or gas company
requirements. Refer to Table 3.
The heating value of the gas may differ with locality. The value
should be checked with the local gas utility.
NOTE: There may be a local gas utility requirement specifying
a minimum diameter for gas piping. All units require a
1/2 inch pipe connection at the entrance fitting.
035-14832-003-A-0204
Unitary Products Group 5
FIG. 3 - TYPICAL FIELD WIRING
REFER TO THE ELECTRICAL
DATA TO SIZE THE DISCONNECT
SWITCH, THE WIRING AND THE
OVERCURRENT PROTECTION
REFER TO THE ELECTRICAL
DATA TO SIZE THE DISCONNECT
SWITCH, THE WIRING AND THE
OVERCURRENT PROTECTION
POWER WIRING
Length in Feet
Nominal Iron Pipe Size
1/2 in. 3/4 in. 1 in. 1-1/4 in.
10
20
30
40
50
60
70
80
90
100
132
92
73
63
56
50
46
43
40
38
278
190
152
130
115
105
96
90
84
79
520
350
285
245
215
195
180
170
160
150
1,050
730
590
500
440
400
370
350
320
305
Maximum capacity of pipe in cubic feet of gas per hour. (Based upon a pressure drop of 0.3 inch
water column and 0.6 specific gravity gas).
TABLE 3 - PIPE SIZING
CONTROL WIRING
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 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
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 . I F T H E U N I T H A S A N 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 I O 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 I Z E R . I F 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 I Z E R O N A
S E C O N D S T A G E O F C O O L I N G O R H A V E A N D E L E C T R I C H E A T A C C E S S O R Y
W I T 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 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
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 I F 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 I C 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 ( I N 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 I N G I S N O T R E Q U I R E D O N U N I T S L E S S E C O N O M I Z E R .
3 S E C O N D S T A G E H E A T I N G I S O N L Y R E Q U I R E D O N U N I T S W I T H A T W O S T A G E
E L E C T R I C 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 I N 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 I T S W I T H E C O N M I Z E R . T E R M I N A L S A 1 A N D A 2 P R O V I D 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 I Z 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 I T C H E S T O T H E S E T - B A C K P O S I T I O N .
COOLING / HEATING (ELECTRONIC THERMOSTAT)
2
3
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 I C 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 I O 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 I Z 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 I N 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