5167821-YTG-J-0518
14
Johnson Controls Ducted Systems
Physical Data
ZT037-061
Component
Models
ZT037
ZT049
ZT061
Nominal Tonnage
3.0
4.0
5.0
AHRI COOLING PERFORMANCE
Gross Capacity @ AHRI A point (MBh)
38000
51200
61600
AHRI net capacity (MBh)
37000
50000
60000
EER
13.05
14.0
13.00
SEER (208/230 & 460V)
17.0
17.5
16.3
SEER (575V)
15.95
17.5
16.3
Nominal CFM
1300
1600
1550
System power (KW)
2.82
3.57
4.62
Refrigerant type
R-410A
R-410A
R-410A
Refrigerant charge (lb-oz)
System 1 (208/230 & 460V)
10-5
13-2
12-7
System 1 (575V)
9-12
13-2
12-7
AHRI HEATING PERFORMANCE
Heating model
N06
N08
N12
N06
N08
N12
N08
N12
N16
Heat input (K Btu)
60
80
120
60
80
120
80
120
160
Heat output (K Btu)
49
65
97
49
65
97
65
97
129
Steady state efficiency (%)
81.5
81
81
81.5
81
81
81
81
80.5
No. burners
4
4
6
4
4
6
4
6
8
No. stages
2
1
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
Temperature Rise Range (ºF)
20-50°F 25-65°F 50-80°F 20-50°F 25-65°F 40-70°F 25-65°F 35-65°F 45-75°F
Gas Limit Setting (ºF)
235
200
255
235
200
255
200
245
240
Heating model Low NOx
P06
P08
P12
P06
P08
P12
P08
P12
P16
Gas Limit Setting (ºF) Low NOx
270
240
315
270
240
315
240
315
240
Gas piping connection (in.)
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
DIMENSIONS (inches)
Length
89
89
89
Width
59
59
59
Height
42
42
42
OPERATING WT. (lbs.)
922
960
968
COMPRESSORS
3
Type
2-stage scroll
2-stage scroll
2-stage scroll
Quantity
1
1
1
Unit Capacity Steps (%)
67/100
67/100
67/100
CONDENSER COIL DATA
Face area (Sq. Ft.)
12.2
12.2
12.2
Rows
1
1
1
Fins per inch
23
23
23
Tube diameter (in./MM)
.98/25
.98/25
.98/25
Circuitry Type
2-pass Microchannel
2-pass Microchannel
2-pass Microchannel
EVAPORATOR COIL DATA
Face area (Sq. Ft.)
10.56
10.56
10.56
Rows
3
4
4
Fins per inch
15
15
15
Tube diameter
0.375
0.375
0.375
Refrigerant control
TXV
TXV
TXV
