Technical Guide

528150-YTG-N-0912
18 Johnson Controls Unitary Products
ZH037-061 Two Stage Gas Physical Data
Component
Models
ZH037 ZH049 ZH061
Nominal Tonnage 3.0 4.0 5.0
AHRI COOLING PERFORMANCE
Gross Capacity @ AHRI A point (MBh) 37000 50000 61000
AHRI net capacity (MBh) 36000 48000 58000
EER 11.8 11.8 11.8
SEER 14 14 14
IPLV - - -
Nominal CFM 1200 1600 2000
System power (KW) 3.05 4.07 4.90
Refrigerant type R-410A R-410A R-410A
Refrigerant charge (lb-oz)
System 1 7-4 6-14 7-12
System 2 - - -
AHRI HEATING PERFORMANCE
Heating model N05 N07 N09 N05 N07 N09 N07 N09 N13
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
AFUE % - - - - - -
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°F 200°F 255°F 235°F 200°F 255°F 200°F 245°F 240°F
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.) 723 763 864
COMPRESSORS
Type Recip Recip Recip
Quantity 1 1 1
Unit Capacity Steps (%) 100 100 100
CONDENSER COIL DATA
Face area (Sq. Ft.) 11.9 18.5 21.1
Rows 1 1 1
Fins per inch 23 23 23
Tube diameter (in./MM) 1/25 .71/18 .71/18
Circuitry Type 2-pass Microchannel 2-pass Microchannel 2-pass Microchannel
EVAPORATOR COIL DATA
Face area (Sq. Ft.) 8 8 10.6
Rows 3 3 3
Fins per inch 15 15 15
Tube diameter 0.375 0.375 0.375
Refrigerant control TXV TXV TXV