Technical Guide

333491-YTG-G-0211
8 Johnson Controls Unitary Products
DNZ024-060 Two Stage Gas Heat
Component
Models
DNZ024 DNZ030 DNZ036 DNZ042 DNZ048 DNZ060
Nominal Tonnage 2.0 2.5 3.0 3.5 4.0 5.0
ARI COOLING PERFORMANCE
Gross Capacity @ ARI A point (MBh) 24.7 30.8 35.6 43.0 50.0 59.5
ARI net capacity (MBh) 24.0 30.0 34.2 41.5 48.0 57.5
EER 11.6 11.5 11.1 11.6 11.6 10.9
SEER 13.2 13.2 13.2 13.4 13.4 13.0
Nominal CFM 850 940 1200 1300 1540 1600
System power (KW) 2.1 2.7 3.2 3.6 4.4 5.3
Refrigerant type R-410A R-410A R-410A R-410A R-410A R-410A
Refrigerant charge (lb-oz) 3-10 4-0 4-0 4-14 4-4 5-2
ARI HEATING PERFORMANCE
Heating model D056 D056 D056 D072 D090 D090 D110 D090 D110
Heat input (K Btu) 70/45.5 70/45.5 70/45.5 90/58.5 108/70.2 108/70.2 135/87.8 108/70.2 135/87.8
Heat output (K Btu) 56/36.4 56/36.4 56/36.4 72/46.8 87/56.2 87/56.2 108/70.2 87/56.2 108/70.2
AFUE % 80.0 80.0 80.0 80.0 80.0 80.0 80.0 80.0 80.0
Steady state efficiency (%) 80 80 80 80 80 80 80 80 80
No. burners 3 3 34 4 4545
No. stages 2 2 22 2 2222
Temperature Rise Range (ºF) 30-60 30-60 25-55 30-60 45-75 35-65 45-75 35-65 45-75
Gas Limit Setting (ºF) 160 160 160 160 175 175 170 175 170
Gas piping connection (in.) 1/2 1/2 1/2 1/2 1/2 1/2
DIMENSIONS (inches)
Length 49 1/8 49 1/8 49 1/8 49 1/8 49 1/8 49 1/8
Width 47 1/4 47 1/4 47 1/4 47 1/4 47 1/4 47 1/4
Height 33 1/2 33 1/2 33 1/2 41 1/2 41 1/2 41 1/2
OPERATING WT. (lbs.) 378 398 402 460 465 480
COMPRESSORS
Type Recip 1-spd Recip 1-spd Recip 1-spd Recip 1-spd Scroll 1-spd Scroll 1-spd
Quantity 111111
CONDENSER COIL DATA
Face area (Sq. Ft.) 11.9 11.9 11.9 15 15 15
Rows 111111
Fins per inch 23 23 23 23 23 23
Tube diameter (in.) 0.71/18 0.71/18 0.71/18 0.71/18 0.71/18 0.71/18
Circuitry Type 2-pass Micro-Channel
EVAPORATOR COIL DATA
Face area (Sq. Ft.) 3.4 3.4 3.4 4.4 4.4 4.4
Rows 233334
Fins per inch 15 13 13 16 16 13
Tube diameter 3/8 3/8 3/8 3/8 3/8 3/8
Circuitry Type Interlaced Interlaced Interlaced Interlaced Interlaced Interlaced
Refrigerant control Orifice Orifice Orifice Orifice TXV TXV
CONDENSER FAN DATA
Quantity 111111
Fan diameter (Inch) 22 22 22 22 22 22
Type Prop Prop Prop Prop Prop Prop
Drive type Direct Direct Direct Direct Direct Direct
No. speeds 111111
Number of motors 111111
Motor HP each 1/4 1/4 1/4 1/3 1/3 1/2
RPM 1100 1100 1100 1100 1100 1090
Nominal total CFM 2400 2400 2400 3200 3200 3200
DIRECT DRIVE EVAP FAN DATA
Quantity 111111
Fan Size (Inch) 10 x 8 10 x 8 11 x 10 11 x 10 11 x 10 11 x 10
Type Centrifugal Centrifugal Centrifugal Centrifugal Centrifugal Centrifugal
Motor HP each 1/2 3/4 3/4 3/4 1 1
RPM Variable Variable Variable Variable Variable Variable
Frame size 48 48 48 48 48 48
FILTERS
Quantity - Size 1 - 20 x 20 x 1 1 - 20 x 20 x 1 1 - 20 x 20 x 1 2 - 20 x 12 x 1 2 - 20 x 12 x 1 2 - 20 x 12 x 1