Product Data - HVACpartners

50ZH
3-PHASE SINGLE-PACKAGED HEAT PUMPS
2-1/2 to 5 Tons
Product Data
Single-Packaged Heat Pump Units with:
• easy installation design
• corrosion-proof unit base
• redesigned aerodynamic fan blade for
reduced sound
• sloped drain for improved indoor air
quality
• scroll compressors
• through-the-top service access
• louvered panel coil protection
Features/Benefits
Compact, horizontal supply and return
unit, combining easy installation and
maintenance with efficient performance.
EASY TO INSTALL — The 50ZH
units are lightweight, compact singlepackage units that are easy to handle.
Every 50ZH unit has an identical 32 by
51-in. footprint to make jobsite planning
simple. The precise design uses less
sheet metal and makes the 50ZH units
lighter than other units. The unit can be
easily positioned on the jobsite with the
hand-holds built into the unit basepan.
Drop-in cartridge style heaters are
utilized to minimize installation time.
UNIT 50ZH
REDESIGNED AERODYNAMIC
FAN BLADE DESIGN reduces overall
sound by up to 3dB; now as low as 76dB.
TOP COVER SERVICE ACCESS —
The 50ZH units are designed to be
serviced from the top. The split-top
design allows easy access for installation
and maintenance procedures on the unit.
Routine maintenance tasks such as coil
cleaning are sped up with through-thetop access. Multiple side panels do not
need to be removed as with other units.
CORROSION PROOF UNIT
BASE— The 50ZH unit features a
tough, high-tech, single-piece,
composite material unit base with an
integrated drain. The composite material
eliminates the potential problem of rust
and premature replacement which are
common with standard metal pans. Each
50ZH unit base is sloped to eliminate
standing water. This feature minimizes
the amount of standing water inside the
unit, which limits mold and mildew
growth.
DURABLE STEEL CABINET — The
watertight construction and corrosionresistant finish of the 50ZH unit will
keep it looking like new for years. A
specialized paint treatment process
ensures quality protection against the
elements. A compact, low-profile design
utilizes a louvered coil enclosure for
maximum protection against hail
damage and vandalism.
50ZH
SCROLL COMPRESSORS — Each
50ZH unit comes standard with a high
reliability design scroll compressor.
Each scroll compressor is hermetically
sealed against contamination to help
promote longer life and dependable
operation. All scroll compressors have
internal high-pressure and overcurrent
protection.
COIL EFFICIENCY — Indoor and
outdoor coils are computer designed for
optimum heat transfer and cooling
efficiency.
CHRONOTEMP™ DEFROST
SYSTEM — The system provides time/
temperature-based defrost cycles to
maintain unit efficiency. This highly
reliable system checks for coil icing
conditions at preset intervals and
initiates a defrost cycle only if it is
required. The defrost cycle ends as soon
as defrosting is accomplished. Each
defrost board is also equipped with 5minute compressor time delay
protection.
ACCESSORY ELECTRIC
HEATERS — A variety of accessory
electric supplementary heaters are
available for the 50ZH units. Each heater
is a drop-in style cartridge type with
single-point electrical connections for
both the heater and the unit.
STARTER COLLARS — Starter
collars are provided with each unit to
provide easy connection to the structure
ductwork.
DEPENDABLE COMPONENTS —
Direct-drive multispeed, PSC
(permanent split capacitor) blower motor
is standard on all models.
Direct-drive, PSC outdoor-fan motors are
designed to help reduce energy
consumption and provide for cooling
operation down to 40° F.
Refrigerant system is designed to
provide dependability. Liquid refrigerant
strainers are used to promote clean,
unrestricted operation. Each unit leaves
the factory with a full refrigerant charge
and is fully run tested. Refrigerant
service connections make checking
operating pressure easier.
MODEL NUMBER NOMENCLATURE
50ZH
030
Model No.
50ZH — Single Packaged
--------- -Heat Pump Unit
Nominal Cooling Capacity
030 – 2-1/2 Tons
036 – 3 Tons
042 – 3-1/2 Tons
048 – 4 Tons
060 – 5 Tons
Electrical Supply
5 — 208/230-3-60
6 — 460-3-60
5
0
1
AD
Options
- - – Wire Grille
AD – Louvered Grille
BT – Wire Grille and vinyl-coated
outdoor coil fin
XT – Louvered Grille and vinyl-coated
outdoor coil fin
CC – Wire Grille, AL indoor and CU/CU
outdoor coil
CU – Wire Grille, CU/CU indoor and
outdoor coils
AC – Louvered Grille, AL indoor and
CU/CU outdoor coil
AU – Louvered Grille, CU/CU indoor and
outdoor coils
TP – Tin-Plated Indoor Coil Hairpins
(Refer to current Price Page for
additional combination of options)
Packaging
Series
Table of contents
Page
Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1, 2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5
Base Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-16
Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Typical Wiring Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23
2
ARI* capacities
COOLING CAPACITIES AND EFFICIENCIES
NOMINAL
TONS
STANDARD
CFM
NET COOLING
CAPACITIES
AT 95°F (Btuh)†
SEER†
NET HEATING
CAPACITIES
AT 47°F (Btuh)†
HSPF†
HIGH HEAT
COP
AT 47°F
SOUND
RATINGS**
(dB)
030
036
042
048
060
2.5
3.0
3.5
4.0
5.0
1000
1200
1400
1600
TT
2000
28,200
34,200
40,000
44,500
55,000
10.00
10.00
10.00
10.00
10.50
27,200
33,800
40,000
45,000
52,500
6.8
6.8
6.8
6.8
6.8
2.9
3.0
3.0
3.0
3.0
81
78
78
80
84
R Y E Q UIP M
50ZH
EN
7
TANDARD 2
5
®
TA
IS
0
2
AR
T
SOUND
RA
MANUFACTU
RE
R
0
WITH
21
R
DOO
UT
O
NDARD
OF
NG
TI
NI
UIP M E NT
STA
YING
PL
OM
EQ
RI
T
IFIED O ARI A
RT
S
C
CE
U
A
AIR
CO
Y
NING
ITIO
ND
UNIT
AR
T
IFIED O ARI A
RT
S
C
CE
YING WITH
PL
OM
LEGEND
dB
— Sound Levels (decibels)
HSPF — Heating Seasonal Performance Factor
SEER — Seasonal Energy Efficiency Ratio
COP
— Coefficient of Performance
* Air Conditioning & Refrigeration Institute.
† Rated in accordance with U.S. Government DOE (Department of
Energy) test procedures and/or ARI Standard 210/240-89.
** Rated in accordance with ARI Standard 270-84.
MANUFACTUR
ER
UNIT
50ZH
(–SERIES)
A2
3
Physical data
UNIT SIZE 50ZH
030
036
042
048
060
OPERATING WEIGHT (lb)
254
277
295
328
368
9.1
9.7
2—17
11.1
2—17
12.7
2600
1100
1/4
20
3200
1100
1/2
20
4—15
4.4
4—15
4.9
10 x 9
1600
1000-1100
2
Low
3/4
10 x 10
2000
950-1100
3
Low
1
COMPRESSOR TYPE
Scroll
REFRIGERANT
CHARGE (lb)
R-22
5.6
5.9
6.6
REFRIGERANT METERING DEVICE
Acutrol™ System
OUTDOOR COIL
Rows—Fins/in.
Face Area (sq ft)
Copper Tubes, Aluminum Plate Fins
2—17
6.7
1—17
11.1
2000
1100
1/4
20
2600
1100
1/4
20
3—15
3.1
3—15
4.0
10 x 8
1000
550-1000
3
Med
1/4
10 x 9
1200
800-1050
3
Low
1/2
2—17
9.33
OUTDOOR-FAN MOTOR
Nominal Cfm
Nominal Rpm
Motor Hp (Rpm)
Diameter (in.)
Propeller
EVAPORATOR COIL
Rows—Fins/in.
Face Area (sq ft)
2600
1100
1/4
20
Copper Tubes, Aluminum Plate fins
3—15
4.0
EVAPORATOR-FAN MOTOR
Blower Motor Size (in.)
Nominal Cfm
Rpm Range
Number of Speeds
Factory Speed Setting
Motor Hp
Direct Drive
CONNECTING DUCT SIZES
Supply Air (in.)
Return Air (in.)
FIELD-SUPPLIED RETURN AIR FILTER*
Throwaway (in.)
24 x 24 x 1
24 x 24 x 1
10 x 9
1400
800-1050
3
Med
1/2
Round
Square
14
14
13.9 x 13.9
13.9 x 27.8
24 x 24 x 1
24 x 30 x 1
24 x 30 x 1
* Required filter sizes shown are based on the ARI (Air Conditioning & Refrigeration Institute) rated cooling airflow at a velocity of 300 ft/minute for throwaway type or 450 ft/minute for high-capacity type. Recommended filters are 1-in. thick.
3
Accessories
ACCESSORY
MotorMaster II® Low Ambient Control allows unit to run at outdoor
temperatures down to 0°F.
Controls Upgrade Kit provides high and low pressure safety protection and
protects the unit from operating in unsuitable conditions.
Crankcase Heater provides anti-floodback protection for low load
applications.
Outdoor Thermostat
Corporate Thermostat provides heating and cooling unit control. The
thermostat provides system and fan switching.
Electric Heaters provide heat in the unit when required. Each package has a
heater module that slides into keyed mounting slots in the fan inlet. Heater
sizes range from 5.0 to 20.0 kW. The electric heater design allows the use of
a single-point power supply for the entire unit, resulting in lower installed
costs.
Outdoor Thermostat brings second stage of 2-stage electric heater on line
when the outdoor-air temperature falls below the set point.
Corporate Thermostat
Electric Heat with Single-Point Kit (5.0 to 20.0 kW)
50ZH
Accessory electric heater usage
ODS CATALOG
ORDERING NO.
NOMINAL
CAPACITY
CPHEATER029A00
CPHEATER030A00
CPHEATER032A00
CPHEATER041A00
5 kW
10 kW
15 kW
20 kW
CPHEATER034A00
CPHEATER035A00
CPHEATER036A00
CPHEATER037A00
5 kW
10 kW
15 kW
20 kW
ODS — Order Distribution System
4
030
USED WITH SIZES
036
042
ELECTRIC HEATERS (240-3-60)
X
X
X
X
X
X
X
ELECTRIC HEATERS (480-3-60)
X
X
X
X
X
X
X
048
060
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Accessories (cont)
MULTIPLICATION FACTORS
HEATER kW
RATING
240
480
VOLTAGE
DISTRIBUTION
V/3/60
200
208
230
240
440
460
480
MULTIPLICATION
FACTOR
0.69
0.75
0.92
1.00
0.84
0.92
1.00
Example: 15.0 kW (at 240 v) heater on 208 v
= 15.0 (.75 mult factor)
= 11.25 capacity at 208 v
50ZH
ODS — Order Distribution System
Balance Point Worksheet
80000
Building Heat Loss, BTUH
Unit Integrated Heating Capacity (BTUH)
70000
60000
50000
030
036
042
048
060
40000
30000
20000
10000
0
-10
0
10
20
30
40
50
60
Outdoor Air Temp (Deg F)
50ZH Balance Point Worksheet
5
Base unit dimensions—50ZH030
REQUIRED CLEARANCE TO COMBUSTIBLE MATL.
INCHES [mm]
TOP OF UNIT .........................................................................................0
DUCT SIDE OF UNIT.............................................................................0
SIDE OPPOSITE DUCTS ......................................................................0
BOTTOM OF UNIT .................................................................................0
NEC. REQUIRED CLEARANCES.
INCHES [mm]
BETWEEN UNITS, POWER ENTRY SIDE ....................................42.00 [1066.8]
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE .36.00 [914.0]
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE.........................42.00 [1066.8]
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
50ZH
INCHES [mm]
CONDENSER
.
COIL ACCESS SIDE..............................................30.00 [762.0]
POWER ENTRY SIDE....................................................................30.00 [762.0]
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................48.00 [1219.2]
SIDE OPPOSITE DUCTS ..............................................................30.00 [762.0]
LEGEND
NEC – National Electrical Code
NOTES:
1. Clearances must be maintained to prevent recirculation of air from outdoorfan discharge, with the exception of the condenser coil (36.00 in [914.0 mm]. A
removable fence or barricade requires no clearance.
2. Dimensions are in inches. Dimensions in [ ] are in millimeters.
6
UNIT WEIGHT
CENTER OF GRAVITY mm (in.)
UNIT
ELECTRICAL
CHARACTERISTICS
Lb
Kg
X
Y
Z
UNIT HEIGHT
(IN.)
50ZH030
208/230-3-60
254
116
356 (14.0)
483 (19.0)
305 (12.0)
22.1
Base unit dimensions—50ZH036-048
REQUIRED CLEARANCE TO COMBUSTIBLE MATL.
INCHES [mm]
TOP OF UNIT .........................................................................................0
DUCT SIDE OF UNIT.............................................................................0
SIDE OPPOSITE DUCTS ......................................................................0
BOTTOM OF UNIT .................................................................................0
NEC. REQUIRED CLEARANCES.
INCHES [mm]
BETWEEN UNITS, POWER ENTRY SIDE ....................................42.00 [1066.8]
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE .36.00 [914.0]
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE.........................42.00 [1066.8]
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
50ZH
INCHES [mm]
CONDENSER
.
COIL ACCESS SIDE..............................................
30.00 [762.0]
POWER ENTRY SIDE....................................................................30.00 [762.0]
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................48.00 [1219.2]
SIDE OPPOSITE DUCTS ..............................................................30.00 [762.0]
LEGEND
NEC – National Electrical Code
NOTES:
1. Clearances must be maintained to prevent recirculation of air from outdoorfan discharge, with the exception of the condenser coil (36.00 in [914.0 mm]. A
removable fence or barricade requires no clearance.
2. Dimensions are in inches. Dimensions in [ ] are in millimeters.
UNIT WEIGHT
CENTER OF GRAVITY mm (in.)
Lb
Kg
X
Y
Z
UNIT HEIGHT
(IN.)
208/230-3-60, 460-3-60
277
126
356 (14.0)
483 (19.0)
381 (15.0)
30.1
208/230-3-60, 460-3-60
277
126
356 (14.0)
483 (19.0)
381 (15.0)
30.1
208/230-3-60, 460-3-60
277
126
356 (14.0)
483 (19.0)
381 (15.0)
30.1
UNIT
ELECTRICAL
CHARACTERISTICS
50ZH036
50ZH042
50ZH048
7
Base unit dimensions—50ZH060
REQUIRED CLEARANCE TO COMBUSTIBLE MATL.
INCHES [mm]
TOP OF UNIT .........................................................................................0
DUCT SIDE OF UNIT.............................................................................0
SIDE OPPOSITE DUCTS ......................................................................0
BOTTOM OF UNIT .................................................................................0
NEC. REQUIRED CLEARANCES.
INCHES [mm]
BETWEEN UNITS, POWER ENTRY SIDE ....................................42.00 [1066.8]
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE .36.00 [914.0]
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE.........................42.00 [1066.8]
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
50ZH
INCHES [mm]
CONDENSER
.
COIL ACCESS SIDE..............................................30.00 [762.0]
POWER ENTRY SIDE....................................................................30.00 [762.0]
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .......................................................................................48.00 [1219.2]
SIDE OPPOSITE DUCTS ..............................................................30.00 [762.0]
LEGEND
NEC – National Electrical Code
NOTES:
1. Clearances must be maintained to prevent recirculation of air from outdoorfan discharge, with the exception of the condenser coil (36.00 in [914.0 mm]. A
removable fence or barricade requires no clearance.
2. Dimensions are in inches. Dimensions in [ ] are in millimeters.
8
UNIT
ELECTRICAL
CHARACTERISTICS
V-Ph-Hz
Lb
UNIT WEIGHT
Kg
X
CENTER OF GRAVITY mm (in.)
Y
Z
UNIT HEIGHT
(IN.)
50ZH060
208/230-3-60, 460-3-60
368
167
356 (14.00)
508 (20.00)
406 (16.00)
35.8
Selection Procedure
II SELECT UNIT BASED ON REQUIRED COOLING
CAPACITY.
Enter Cooling Capacities table at condenser entering
temperature of 95° F, indoor air entering at 1125 cfm and
67° F ewb (entering wet bulb). The 50ZH030 unit will
provide a total cooling capacity of 28,800 Btuh and a
sensible heat capacity of 21,700 Btuh.
For indoor-air temperature other than 80° F edb (entering
dry bulb), calcualte sensible heat capacity correction, as
required, using the formula found in Note 3 following the
cooling capacities tables.
NOTE: Unit ratings are net capacities.
III SELECT ELECTRIC HEAT.
Enter the 50ZH030 Heating Capacities table at 1125 cfm.
At 70° F return indoor air and 20° F air entering outdoor
coil, the inegrated heating capacity is 15,500 Btuh. (Select
integrated heating capacity value since deductions for
outdoor-coil frost and defrosting have already been made.
No correction is required.)
The required heating capacity is 28,550 Btuh. Therefore,
13,050 Btuh (28,550 – 15,500) additional electric heat is
required.
Determine additional electric heat capacity in kW.
13,050 Btuh = 3.8 kW of heat required
3414 Btuh/kW
Enter the Accessory Electric Heater Usage table on page 4
for 208/240 v. three-phase, 50ZH030 unit. The 5-kW heater
at 240 v most closely satisfies the heating required. To
calculate kW at 230 v, multiply the heater kW by
multiplication factor 0.92 found in the Multiplication
Factors table on page 5.
5 kW x 0.92 = 4.6 kW
4.6 x 3414 = 15,704 Btuh
To calculate kW at 208 v, see Multiplication Factors table
on page 5.
Total unit heating capacity is 31,204 Btuh (15,500 +
15,704).
IV DETERMINE FAN SPEED AND POWER
REQUIREMENTS AT DESIGN CONDITIONS.
Before entering the air delivery tables, calculate the total
static pressure required. From the given, the Accessory
Electric Heat Pressure Drop table, Wet Coil Pressure Drop
table, and the Filter Pressure Drop table, find:
External static pressure
0.20 in. wg
Filter
0.09 in. wg
Electric heat
0.11 in. wg
Wet coil
0.07 in. wg
Total static pressure
0.47 in. wg
Enter the table for Dry Coil Air Delivery — Horizontal
Discharge at 1125 cfm and 230-v high speed. By
interpolation, the standard motor will deliver 0.48 in. wg
static pressure. This will adequately handle job
requirements.
9
50ZH
I DETERMINE COOLING AND HEATING
REQUIREMENTS AT DESIGN CONDITIONS:
Given:
Required Cooling Capacity (TC) . . . . . . . . . . 28,000 Btuh
Sensible Heat Capacity (SHC) . . . . . . . . . . . . 20,500 Btuh
Required Heating Capacity. . . . . . . . . . . . . . . 28,550 Btuh
Outdoor Entering-Air Temperature . . . . . . . . . . . . . . 95° F
Outdoor-Air Winter Design Temperature . . . . . . . . 20° F
Indoor-Air Winter Design Temperature. . . . . . . . . . . 70° F
Indoor Entering-Air Temperature. . . . . . . . . . . . 80° F edb,
67° F ewb
Indoor-Air Quantity . . . . . . . . . . . . . . . . . . . . . . .1125 cfm
External Static Pressure . . . . . . . . . . . . . . . . . . 0.20 in. wg
Electrical Characteristics (V-Ph-Hz) . . . . . . 208/230-3-60
edb — entering dry bulb
ewb — entering wet bulb
Performance data
COOLING CAPACITY
50ZH030 (2-1/2 TONS)
Indoor Entering Air—CFM/BF
Temp (F)
Air Ent
Outdoor
coil (edb)
85
50ZH
95
105
115
875/0.10
1000/0.11
1125/0.12
Indoor Entering Air — Ewb (F)
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
72
67
63*
62
72
67
63*
62
72
67
63*
62
31.6
15.0
2.80
30.9
15.0
3.05
29.7
14.6
3.31
28.4
14.2
3.58
29.2
19.8
2.76
28.1
19.4
3.00
26.9
19.0
3.26
25.5
18.6
3.53
27.1
19.5
2.73
26.0
19.1
2.96
24.8
18.6
3.21
23.5
18.1
3.46
26.4
23.9
2.71
25.3
23.4
2.94
24.1
22.8
3.19
22.9
22.2
3.44
32.2
15.7
2.87
31.2
15.6
3.11
30.0
15.2
3.37
28.7
14.9
3.64
29.6
20.9
2.82
28.2
20.6
3.05
27.2
20.2
3.32
25.8
19.8
3.60
27.5
20.7
2.79
26.4
20.3
3.02
25.1
19.8
3.27
23.8
19.2
3.53
26.9
25.4
2.77
25.7
24.9
3.00
24.5
24.2
3.26
23.4
23.4
3.51
31.9
15.9
2.90
31.4
16.1
3.16
30.1
15.7
3.41
28.8
15.4
3.69
29.9
22.0
2.88
28.8
21.7
3.11
27.5
21.4
3.37
26.1
20.9
3.65
27.8
21.7
2.84
26.7
21.3
3.07
25.4
20.9
3.34
24.0
20.3
3.59
27.2
26.6
2.83
26.1
26.0
3.06
25.1
25.1
3.33
24.0
24.0
3.59
See page 15 for cooling notes.
HEATING CAPACITY
50ZH030
Temp (F)
Air Ent
Indoor
Coil
Indoor
Air CFM
(Std)
875
60
1000
1125
875
70
1000
1125
875
80
1000
1125
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Air Temperature Entering Outdoor Coil (F db at 70% rh)
-10
0
10
17
20
30
40
47
50
60
9.13 8.40
2.12
9.30 8.56
2.15
9.46 8.70
2.19
8.62 7.93
2.26
8.81 8.11
2.29
8.97 8.25
2.32
7.99 7.35
2.39
8.18 7.53
2.42
8.36 7.69
2.45
11.5 10.6
2.18
11.7 10.8
2.20
11.9 10.9
2.23
11.1 10.2
2.33
11.3 10.4
2.35
11.5 10.5
2.38
10.6 9.71
2.49
10.7 9.89
2.51
10.9 10.1
2.53
14.1 13.0
2.25
14.3 13.1
2.26
14.5 13.3
2.28
13.8 12.7
2.41
14.0 12.9
2.42
14.2 13.0
2.44
13.3 12.2
2.58
13.6 12.4
2.59
13.8 12.6
2.61
16.1 14.7
2.29
16.3 14.8
2.30
16.4 15.0
2.32
15.8 14.4
2.47
16.0 14.6
2.47
16.2 14.7
2.48
15.5 14.1
2.64
15.7 14.3
2.65
15.9 14.5
2.66
17.0 15.4
2.31
17.2 15.6
2.32
17.4 15.8
2.33
16.7 15.1
2.49
16.9 15.3
2.49
17.1 15.5
2.50
16.4 14.9
2.67
16.6 15.0
2.67
16.8 15.2
2.68
20.4 17.8
2.40
20.6 18.0
2.39
20.8 18.2
2.40
20.0 17.5
2.58
20.2 17.7
2.57
20.4 17.9
2.57
19.6 17.2
2.78
19.8 17.4
2.77
20.0 17.6
2.77
24.2 24.2
2.49
24.4 24.4
2.48
24.6 24.6
2.48
23.7 23.7
2.68
23.9 23.9
2.66
24.2 24.2
2.66
23.2 23.2
2.89
23.5 23.5
2.87
23.7 23.7
2.86
27.5 27.5
2.58
27.8 27.8
2.56
28.0 28.0
2.56
26.9 26.9
2.78
27.2 27.2
2.75
27.5 27.5
2.74
26.3 26.3
2.99
26.6 26.6
2.96
26.9 26.9
2.94
28.6 28.6
2.61
28.9 28.9
2.59
29.2 29.2
2.58
28.0 28.0
2.81
28.3 28.3
2.78
28.6 28.6
2.77
27.4 27.4
3.03
27.7 27.7
2.99
28.0 28.0
2.97
33.9 33.9
2.77
34.3 34.3
2.73
34.6 34.6
2.71
33.1 33.1
2.97
33.6 33.6
2.92
33.9 33.9
2.90
32.4 32.4
3.20
32.8 32.8
3.14
33.2 33.2
3.11
LEGEND
Cap. — Heating Capacity (1000 Btuh) (Includes Indoor-Fan Motor Heat)
db — Dry Bulb
kW — Total Power Input (Includes Compressor Motor Power Input
Outdoor-Fan Motor Input, and Indoor-Fan Motor Input)
rh
— Relative Humidity
10
NOTES:
1.
indicates integrated ratings
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
Performance data (cont)
COOLING CAPACITY
50ZH036 (3 TONS)
Evaporator Air—CFM/BF
Temp (F)
Air Ent
Outdoor
coil (edb)
95
105
115
1200/0.11
1350/0.12
Evaporator Air — Ewb (F)
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
72
67
63*
62
72
67
63*
62
72
67
63*
62
39.9
19.1
3.49
28.5
18.7
3.80
36.9
18.2
4.15
35.2
17.6
4.51
35.8
24.2
3.37
34.5
23.7
3.67
33.0
23.2
4.01
31.4
22.6
4.36
33.1
23.4
3.29
31.8
22.9
3.58
30.4
22.4
3.91
28.9
21.8
4.26
32.3
29.0
3.27
31.0
28.4
3.56
29.6
27.8
3.89
28.2
27.1
4.24
40.5
19.9
3.57
39.1
19.5
3.88
37.5
19.0
4.23
35.7
18.5
4.60
36.4
25.7
3.45
34.2
25.2
3.75
33.5
24.7
4.08
31.9
24.1
4.44
33.7
24.8
3.36
32.3
24.3
3.66
30.9
23.8
3.99
29.3
23.2
4.34
32.9
30.8
3.35
31.6
30.3
3.64
30.1
29.6
3.97
28.7
28.7
4.33
40.9
20.7
3.64
39.4
20.4
3.95
37.9
19.9
4.30
36.1
19.3
4.68
36.8
27.0
3.52
35.4
26.6
3.82
33.8
26.1
4.16
32.1
25.5
4.52
34.0
26.0
3.43
32.7
25.6
3.73
31.2
25.1
4.06
29.6
24.5
4.14
33.3
32.4
3.42
32.0
31.8
3.72
30.8
30.8
4.05
29.6
29.5
4.42
50ZH
85
1050/0.09
See page 15 for cooling notes.
HEATING CAPACITY
50ZH036
Temp (F)
Air Ent
Indoor
Coil
Indoor
Air CFM
(Std)
1050
60
1200
1350
1050
70
1200
1350
1050
80
1200
1350
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Air Temperature Entering Outdoor Coil (F db at 70% rh)
-10
0
10
17
20
30
40
47
50
60
11.4 10.5
2.48
11.6 10.7
2.51
11.8 10.9
2.55
10.8 9.96
2.66
11.1 10.2
2.69
11.3 10.4
2.73
10.1 9.29
2.84
10.3 9.52
2.87
10.6 9.72
2.91
14.4 13.2
2.56
14.6 13.4
2.58
14.8 13.6
2.61
13.9 12.8
2.76
14.1 13.0
2.78
14.3 13.2
2.81
13.3 12.3
2.97
13.6 12.5
2.99
13.8 12.7
3.02
17.6 16.2
2.65
17.9 16.4
2.66
18.1 16.6
2.68
17.3 15.8
2.86
17.5 16.1
2.87
17.7 16.2
2.89
16.8 15.5
3.10
17.1 15.7
3.10
17.3 15.9
3.12
20.1 18.3
2.71
20.3 18.5
2.71
20.5 18.7
2.73
19.8 18.1
2.94
20.0 18.2
2.93
20.2 18.4
2.94
19.5 17.8
3.19
19.8 18.0
3.18
20.0 18.2
3.19
21.2 19.2
2.74
21.4 19.4
2.74
21.6 19.6
2.75
20.9 19.0
2.97
21.1 19.2
2.96
21.3 19.3
2.97
20.7 18.8
3.23
21.0 19.1
3.22
21.3 19.3
3.22
25.3 22.2
2.85
25.6 22.4
2.84
25.8 22.6
2.84
25.0 21.9
3.09
25.2 22.1
3.07
25.4 22.3
3.07
24.9 21.8
3.37
25.2 22.0
3.35
25.4 22.3
3.34
30.1 30.1
2.98
30.4 30.4
2.95
30.6 30.6
2.94
29.7 29.7
3.23
29.9 29.9
3.19
30.2 30.2
3.18
29.4 29.4
3.53
29.7 29.7
3.48
29.9 29.9
3.46
34.0 34.0
3.09
34.3 34.3
3.05
34.6 34.6
3.03
33.5 33.5
3.35
33.8 33.8
3.30
34.1 34.1
3.27
33.4 33.4
3.67
33.8 33.8
3.61
34.1 34.1
3.57
35.4 35.4
3.12
35.8 35.8
3.08
36.0 36.0
3.06
34.9 34.9
3.39
35.2 35.2
3.34
35.5 35.5
3.31
34.7 34.7
3.71
35.1 35.1
3.64
35.4 35.4
3.61
41.9 41.9
3.31
42.2 42.2
3.24
42.4 42.4
3.19
41.2 41.2
3.59
41.7 41.7
3.52
42.0 42.0
3.47
40.8 40.8
3.91
41.3 41.3
3.82
41.5 41.5
3.75
LEGEND
Cap. — Heating Capacity (1000 Btuh) (Includes Indoor-Fan Motor Heat)
db — Dry Bulb
kW — Total Power Input (Includes Compressor Motor Power Input,
Outdoor-Fan Motor Input, and Indoor-Fan Motor Input)
rh
— Relative Humidity
NOTES:
1.
indicates integrated ratings.
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
11
Performance data (cont)
COOLING CAPACITY
50ZH042 (3-1/2 TONS)
Indoor Entering — CFM/BF
Temp (F)
Air Ent
Outdoor
coil (edb)
85
95
50ZH
105
115
1225/0.11
1400/0.13
1575/0.14
Indoor Entering — Ewb (F)
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
72
67
63*
62
72
67
63*
62
72
67
63*
62
45.9
22.1
4.28
43.9
21.5
4.65
41.8
20.8
5.00
39.7
20.1
5.44
41.1
28.0
4.15
39.2
27.3
4.51
37.2
26.6
4.90
35.2
25.8
5.32
38.0
27.1
4.06
36.2
26.4
4.42
34.3
25.6
4.80
32.4
24.8
5.21
37.0
33.5
4.04
35.2
32.7
4.39
33.4
31.8
4.78
31.5
30.8
5.19
46.6
23.2
4.37
44.6
22.5
4.74
42.5
21.8
5.09
40.2
21.1
5.53
41.8
29.8
4.24
40.0
29.1
4.60
37.8
28.3
4.99
35.7
27.5
5.41
38.6
28.7
4.15
36.8
28.0
4.50
34.8
27.2
4.89
32.8
26.4
5.30
37.6
35.6
4.13
35.8
34.7
4.48
34.0
33.7
4.87
32.3
32.3
5.29
47.2
24.2
4.45
45.2
23.5
4.82
42.9
22.8
5.17
40.7
22.1
5.61
42.3
31.5
4.32
40.3
30.8
4.68
38.2
30.0
5.07
36.0
29.2
5.50
39.1
30.3
4.23
37.2
29.6
4.58
35.2
28.8
4.97
33.1
27.9
5.40
38.2
37.5
4.21
36.4
36.4
4.56
34.9
34.9
4.97
33.3
33.3
5.40
See page 15 for cooling notes.
HEATING CAPACITY
50ZH042
Temp (F)
Air Ent
Indoor
Coil
Indoor
Air CFM
(Std)
1225
60
1400
1575
1225
70
1400
1575
1225
80
1400
1575
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Air Temperature Entering Outdoor Coil (F db at 70% rh)
-10
0
10
17
20
30
40
47
50
60
13.4 12.4
2.87
13.4 12.3
2.90
13.3 12.3
2.95
12.5 11.5
3.06
12.5 11.5
3.09
12.4 11.4
3.14
11.4 10.5
3.25
11.4 10.5
3.29
11.4 10.4
3.33
16.9 15.5
2.98
16.8 15.4
3.00
17.0 15.6
3.04
16.1 14.8
3.19
16.0 14.7
3.21
16.2 14.9
3.25
15.1 13.9
3.41
15.0 13.8
3.44
15.2 14.0
3.47
20.7 19.0
3.09
20.9 19.2
3.10
21.1 19.4
3.13
20.0 18.3
3.32
20.2 18.5
3.34
20.5 18.8
3.36
19.1 17.5
3.57
19.3 17.8
3.59
19.7 18.0
3.61
23.7 21.6
3.17
23.9 21.8
3.18
24.2 22.1
3.20
23.1 21.1
3.43
23.4 21.3
3.43
23.7 21.6
3.45
22.4 20.4
3.69
22.7 20.7
3.70
23.0 21.0
3.71
25.2 22.9
3.22
25.3 23.0
3.22
25.6 23.2
3.23
24.6 22.4
3.47
24.8 22.5
3.47
25.1 22.7
3.48
24.0 21.7
3.75
24.2 21.9
3.74
24.5 22.2
3.75
29.8 26.1
3.35
30.2 26.5
3.34
30.5 26.8
3.35
29.2 25.6
3.63
29.6 25.9
3.61
29.9 26.2
3.61
28.6 25.1
3.93
29.0 25.4
3.91
29.3 25.7
3.90
35.2 35.2
3.51
35.6 35.6
3.48
36.0 36.0
3.48
34.5 34.6
3.80
34.9 34.9
3.76
35.3 35.3
3.75
33.8 33.8
4.13
34.2 34.2
4.08
34.6 34.6
4.06
40.3 40.3
3.66
40.8 40.8
3.62
41.2 41.2
3.61
39.5 39.5
3.97
40.0 40.0
3.92
40.4 40.4
3.89
38.7 38.7
3.31
39.2 39.2
4.25
39.6 39.6
4.21
42.4 42.4
3.73
42.7 42.7
3.67
43.0 43.0
3.65
41.6 41.6
4.04
41.8 41.8
3.97
42.2 42.2
3.94
40.8 40.8
4.38
41.0 41.0
4.30
41.1 41.4
4.26
49.7 49.7
3.97
50.4 50.4
3.90
50.9 50.9
3.86
48.7 48.7
4.30
49.3 49.3
4.21
49.9 49.9
4.16
47.7 47.7
4.66
48.3 48.3
4.56
48.9 48.9
4.50
LEGEND
Cap. — Heating Capacity (1000 Btuh) (Includes Indoor-Fan Motor Heat)
db — Dry Bulb
kW — Total Power Input (Includes Compressor Motor Power Input
Outdoor-Fan Motor Input, and Indoor-Fan Motor Input)
rh
— Relative Humidity
12
NOTES:
1.
indicates integrated ratings
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
Performance data (cont)
COOLING CAPACITY
50ZH048 (4 TONS)
Indoor Entering—CFM/BF
Temp (F)
Air Ent
Outdoor
coil (edb)
95
105
115
1600/0.05
1800/0.06
Indoor Entering Air — Ewb (F)
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
72
67
63*
62
72
67
63*
62
72
67
63*
62
46.5
23.8
4.2
46.8
24.5
4.6
46.2
24.6
5.0
45.2
24.4
5.4
44.8
32.1
4.2
44.6
32.6
4.6
43.9
33.0
5.0
42.6
33.0
5.4
43.3
31.9
4.1
43.2
33.0
4.5
42.5
33.2
4.9
41.2
40.6
5.3
42.9
40.4
4.1
42.8
41.5
4.5
42.2
41.5
4.9
40.9
40.6
5.3
46.2
23.9
4.4
46.4
24.7
4.8
45.9
25.1
5.2
44.8
24.9
5.7
44.5
32.8
4.4
44.3
33.9
4.8
43.6
34.4
5.2
42.3
34.7
5.6
43.2
32.8
4.3
43.3
34.1
4.7
42.9
33.6
5.1
41.9
39.9
5.5
42.9
41.6
4.3
43.0
42.1
4.7
42.8
41.0
5.1
41.9
40.3
5.5
45.5
23.7
4.7
45.8
24.8
5.1
45.4
25.3
5.5
44.3
25.3
5.9
43.9
33.4
4.6
43.8
34.9
5.0
43.0
35.6
5.4
41.9
35.8
5.8
43.0
34.0
4.5
43.0
34.5
4.9
42.5
35.3
5.3
41.7
40.2
5.7
42.8
42.5
4.5
42.8
42.1
4.9
42.4
42.1
5.3
41.7
40.2
5.7
50ZH
85
1400/0.04
See page 15 for cooling notes.
HEATING CAPACITY
50ZH048
Temp (F)
Air Ent
Indoor
Coil
Indoor
Air CFM
(Std)
1400
60
1600
1800
1400
70
1600
1800
1400
80
1600
1800
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Air Temperature Entering Outdoor Coil (F db at 70% rh)
-10
0
10
17
20
30
40
47
50
60
12.48 11.54 17.03 15.67 21.59 19.52 27.90 25.44 26.72 24.24 33.72 29.54 41.10 41.10 47.00 47.00 48.69 48.69 54.21 54.21
3.29
3.35
4.00
4.09
3.01
3.11
3.22
3.56
3.81
4.00
16.54 16.30 20.32 18.70 24.10 22.12 26.74 24.38 28.49 26.84 34.30 30.05 41.61 41.61 46.91 46.91 48.39 48.39 51.91 51.91
3.27
3.33
3.40
3.45
3.50
3.67
3.91
4.02
4.04
4.11
20.40 18.87 23.41 21.54 26.43 24.26 28.53 26.02 30.09 27.29 34.92 30.60 41.87 41.87 46.62 46.62 47.44 47.44 49.85 49.85
3.49
3.54
3.59
3.62
3.67
3.84
4.02
4.15
4.16
4.21
11.27 10.43 16.06 14.78 20.85 19.14 24.20 22.07 26.21 23.77 33.59 29.43 40.95 40.95 46.91 46.91 48.85 48.85 54.94 54.94
3.55
3.62
4.40
4.48
3.20
3.33
3.46
3.86
4.13
4.34
14.02 12.97 18.33 16.87 22.64 20.78 25.66 23.39 27.55 24.98 34.21 29.98 41.55 41.55 47.35 47.35 48.77 48.77 53.87 53.87
3.45
3.55
3.64
3.71
3.77
3.98
4.24
4.41
4.42
4.50
17.86 16.51 21.48 19.78 25.10 23.03 27.63 25.19 29.35 26.62 34.98 30.65 42.23 42.23 47.48 47.48 48.95 48.95 52.05 52.05
3.75
3.81
3.87
3.92
3.98
4.15
4.41
4.53
4.55
4.60
11.01 10.18 15.83 14.57 20.65 18.96 24.03 21.91 26.04 23.52 33.47 29.33 41.01 41.01 46.64 46.64 48.62 48.62 55.07 55.07
3.84
3.92
4.77
4.89
3.45
3.59
3.73
4.19
4.49
4.71
13.02 12.04 17.53 16.13 22.05 20.24 25.21 22.99 27.16 24.63 34.11 29.89 41.61 41.61 47.34 47.34 49.04 49.04 54.55 54.55
3.70
3.81
3.93
4.00
4.08
4.31
4.60
4.81
4.83
4.91
15.84 14.65 19.89 18.30 23.94 21.98 26.78 24.42 28.61 25.95 34.92 30.59 42.30 42.30 47.74 47.74 49.37 49.37 53.66 53.66
3.99
4.07
4.16
4.22
4.29
4.50
4.78
4.95
4.97
5.02
LEGEND
Cap. — Heating Capacity (1000 Btuh) (Includes Indoor-Fan Motor Heat)
db — Dry Bulb
kW — Total Power Input (Includes Compressor Motor Power Input,
Outdoor-Fan Motor Input, and Indoor-Fan Motor Input)
rh
— Relative Humidity
NOTES:
1.
indicates integrated ratings
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
13
Performance data (cont)
COOLING CAPACITY
50ZH060 (5 TONS)
Evaporator Air—CFM/BF
Temp (F)
Air Ent
Outdoor
coil (edb)
85
95
50ZH
105
115
1750/0.08
2000/0.08
2250/0.09
Evaporator Air — Ewb (F)
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
TC
SHC
kW
72
67
63*
62
72
67
63*
62
72
67
63*
62
65.7
33.7
5.55
63.1
32.9
5.94
60.2
31.9
6.37
57.3
30.9
6.80
59.9
43.4
5.45
55.0
41.9
5.85
53.6
40.8
6.28
51.2
40.1
6.71
55.5
50.8
5.35
52.8
49.6
5.74
49.9
48.3
6.18
47.1
47.0
6.61
54.4
52.5
5.33
51.8
51.1
5.72
49.3
49.3
6.16
46.7
46.7
6.60
66.4
35.2
5.67
64.1
34.5
6.08
61.0
33.6
6.50
58.0
32.7
6.92
60.8
46.5
5.58
58.1
45.4
5.98
54.9
44.3
6.40
51.8
43.1
6.83
56.5
54.4
5.48
53.7
53.1
5.87
51.2
51.1
6.32
48.7
48.7
6.77
55.7
55.7
5.47
53.5
53.4
5.88
51.1
51.1
6.33
48.7
48.7
6.78
67.3
36.8
5.82
64.7
36.3
6.21
61.7
35.3
6.64
58.6
34.3
7.07
61.7
49.4
5.71
58.8
48.3
6.09
55.7
47.2
6.52
52.6
46.1
6.95
57.4
57.3
5.61
55.3
55.2
6.02
52.7
52.7
6.47
50.1
50.1
6.92
57.4
57.4
5.62
55.0
55.0
6.03
52.6
52.6
6.48
50.2
50.1
6.93
See page 15 for cooling notes.
HEATING CAPACITY
50ZH060
Temp (F)
Air Ent
Indoor
Coil
Indoor
Air CFM
(Std)
1800
60
2000
2250
1800
70
2000
2250
1800
80
2000
2250
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Cap.
kW
Air Temperature Entering Outdoor Coil (F db at 70% rh)
-10
0
10
17
20
30
40
47
50
60
15.1 13.9
3.48
15.1 13.9
3.53
15.1 13.9
3.60
14.4 13.2
3.71
14.3 13.2
3.76
14.3 13.2
3.83
13.5 12.4
3.97
13.5 12.4
4.02
13.5 12.4
4.08
19.4 17.8
3.64
19.4 17.8
3.69
19.8 18.2
3.76
18.7 17.2
3.90
18.7 17.2
3.94
19.0 17.5
4.01
17.8 16.4
4.18
17.8 16.4
4.22
18.1 16.7
4.28
24.3 22.3
3.82
24.6 22.6
3.87
25.2 23.1
3.94
23.7 21.8
4.10
24.0 22.0
4.14
24.2 22.2
4.19
22.9 21.1
4.40
23.2 21.3
4.43
23.6 21.7
4.49
28.6 26.1
3.97
28.8 26.3
4.01
29.3 26.8
4.08
28.0 25.5
4.25
28.3 25.8
4.29
28.7 26.2
4.34
27.2 24.8
4.57
27.5 25.1
4.60
27.9 25.5
4.64
30.8 27.9
4.05
30.9 28.1
4.08
31.5 28.5
4.14
30.2 27.4
4.33
30.4 27.5
4.36
30.8 28.0
4.42
29.3 26.6
4.65
29.6 26.8
4.67
30.0 27.2
4.72
37.7 33.0
4.28
38.0 33.3
4.31
28.7 33.9l
4.36
37.0 32.4
4.59
37.3 32.7
4.61
37.9 33.2
4.66
36.2 31.7
4.93
36.6 32.0
4.94
37.1 32.5
4.98
45.8 45.8
4.56
46.3 46.3
4.57
47.1 47.1
4.62
44.9 44.9
4.88
45.3 45.3
4.89
46.1 46.1
4.92
43.9 43.9
5.24
44.4 44.4
5.24
44.9 44.9
5.26
53.5 53.5
4.79
53.9 53.9
4.80
54.7 54.7
4.83
52.5 52.5
5.13
52.8 52.8
5.12
53.6 53.6
5.15
51.4 51.4
5.51
51.8 51.8
5.49
52.4 52.4
5.50
56.3 56.3
4.88
56.5 56.5
4.88
57.3 57.3
4.91
55.2 55.2
5.23
55.4 55.4
5.21
56.1 56.1
5.23
54.2 54.2
5.62
54.4 54.4
5.59
54.9 54.9
5.59
68.1 68.1
5.26
68.7 68.7
5.24
69.8 69.8
5.26
66.7 66.7
5.63
67.3 67.3
5.60
68.3 68.3
5.60
65.3 65.3
6.04
65.9 65.9
5.99
66.7 66.7
5.98
LEGEND
Cap. — Heating Capacity (1000 Btuh) (Includes Indoor-Fan Motor Heat)
db — Dry Bulb
kW — Total Power Input (Includes Compressor Motor Power Input
Outdoor-Fan Motor Input, and Indoor-Fan Motor Input)
rh
— Relative Humidity
14
NOTES:
1.
indicates integrated ratings
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
BF
edb
Ewb
kW
Idb
Iwb
SHC
TC
—
—
—
—
—
—
—
—
tlwb = Wet-bulb temperature corresponding to enthalpy of leaving
indoor coil (hlwb)
LEGEND
Bypass Factor
Entering Dry-Bulb
Entering Wet-Bulb
Total Unit Power Input
Leaving Dry-Bulb
Leaving Wet-Bulb
Sensible Heat Capacity (1000 Btuh) Net
Total Capacity (1000 Btuh) Net
hlwb = hewb –
total capacity (Btuh)
4.5 x cfm
Where: hewb = Enthalpy of air entering evaporator coil
3. The sensible heat capacity is based on 80°F edb temperature of air
entering indoor coil.
Below 80°F edb, subtract (corr factor x cfm) from the sensible heat
capacity.
Above 80°F edb, add (corr factor x cfm) to the sensible heat capacity.
Correction Factor = 1.10 x (1–BF) x (edb – 80).
*At 75°F entering dry bulb (Tennessee Valley Authority [TVA] rating
conditions); all others at 80°F entering dry bulb.
tldb = tedb –
50ZH
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
1.10 x cfm
WET COIL PRESSURE DROP
UNIT SIZE
50ZH
030
036
042
048
060
AIRFLOW
(cfm)
PRESSURE DROP
(in. wg)
900
1000
1200
1000
1200
1400
1600
1000
1200
1400
1600
1400
1600
1800
1700
1800
2100
2300
0.06
0.06
0.08
0.04
0.05
0.07
0.08
0.04
0.06
0.08
0.09
0.07
0.08
0.09
0.07
0.08
0.09
0.10
FILTER PRESSURE DROP (in. wg)
UNIT
SIZE
50ZH
FILTER
SIZE
(in.)
CFM
500
600
700
800
900
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
030-042
048, 060
24 x 24
24 x 30
0.06
—
0.07
—
0.08
—
0.08
—
0.09
—
0.09
—
0.09
—
0.10
—
0.11
0.08
0.12
0.09
0.14
0.10
0.15
0.11
—
0.12
—
0.13
—
0.14
—
0.15
—
0.16
—
0.17
—
0.18
ACCESSORY ELECTRIC HEAT PRESSURE DROP (in. wg)
CFM
HEATER
kW
600
800
1000 1200 1400 1600 1800 2000 2200
5-20
0.06
0.08
0.10
0.13
0.15
0.18
0.20
0.23
0.25
15
Performance data (cont)
DRY COIL AIR DELIVERY* — HORIZONTAL DISCHARGE
(Deduct 10% for 208 Volt Operation)
230 AND 460 VOLT HORIZONTAL DISCHARGE
Unit
50ZH
Motor
Speed
Low
030
Med
50ZH
High
Low
036
Med
High
Low
042
Med
High
Low
048
High
Low
060†
Med
High
External Static Pressure (in.wg)
Air
Delivery
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Watts
288
285
282
279
274
268
261
—
—
CFM
875
820
802
734
668
582
478
—
—
Watts
390
383
378
369
360
350
340
—
—
CFM
1131
1090
1038
978
917
830
721
—
—
Watts
528
520
510
495
480
460
450
—
—
CFM
1891
1338
1285
1200
1115
1018
920
—
—
Watts
450
435
420
400
380
335
326
311
—
CFM
1231
1218
1204
1120
1008
950
863
751
—
Watts
470
450
445
410
388
359
338
321
—
CFM
1302
1264
1205
1163
1081
940
873
783
—
Watts
660
635
610
575
540
505
485
460
—
CFM
1700
1660
1581
1450
1297
1190
1095
989
—
Watts
478
458
440
411
378
350
327
317
—
CFM
1303
1270
1224
1179
1126
1022
911
816
—
Watts
481
468
450
438
404
370
338
320
—
CFM
1310
1280
1241
1181
1110
1022
943
811
—
Watts
—
798
678
647
618
578
540
500
460
CFM
—
1736
1688
1618
1510
1421
1309
1187
1060
Watts
—
—
801
760
730
688
650
600
570
CFM
—
—
1898
1841
1757
1682
1564
1429
1333
Watts
—
—
870
842
818
782
696
632
628
CFM
—
—
2000
1903
1799
1718
1625
1446
1365
422
Watts
890
850
810
790
735
680
580
480
CFM
1834
1820
1791
1762
1703
1640
1415
1159
950
Watts
1040
1018
1000
950
890
835
7990
650
580
CFM
2230
2102
2025
1960
1901
1855
1752
1468
1121
Watts
1073
1038
1001
958
896
840
800
691
575
CFM
2230
2202
2160
2122
2052
1926
1791
1588
1202
*Air delivery values are based on operating voltage of 230 v or 460 v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure
drops to obtain static pressure available for ducting.
NOTES:
1. Do not operate the unit at a cooling ariflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may
occur at airflows below this point.
2. Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended.
† 460-v motors have 2 speeds (060 only).
16
Electrical data
NOMINAL
V-PH-Hz
030
208/230-3-60
IFM
TYPE
VOLTAGE
RANGE
COMPRESSOR
OFM
FLA
IFM
FLA
Min
Max
RLA
LRA
Std
187
254
10.0
63.0
1.5
2.8
208/230-3-60
Std
187
254
11.4
77.0
1.5
2.8
460-3-60
Std
414
508
5.7
39.0
0.8
1.5
208/230-3-60
Std
187
254
13.9
88.0
1.5
2.8
460-3-60
Std
414
508
6.8
44.0
0.8
1.5
208/230-3-60
Std
187
254
12.8
93.0
1.5
4.2
460-3-60
Std
414
508
6.4
46.5
0.8
2.1
208/230-3-60
Std
187
254
15.9
124.0
3.1
6.2
460-3-60
Std
414
508
8.0
59.6
1.5
3.2
036
042
048
060
ELECTRIC HEAT
Nominal kW*
—/—
3.8/5.0
7.5/10.0
11.3/15.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
—/—
5.0
10.0
15.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
—/—
5.0
10.0
15.0
20.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
—/—
5.0
10.0
15.0
20.0
—/—
3.8/5.0
7.5/10.0
11.3/15.0
14.9/19.9
—/—
5.0
10.0
15.0
20.0
FLA
—/—
10.5/12.0
20.8/24.1
31.4/36.1
—/—
10.5/12.0
20.8/24.1
31.4/36.1
—/—
6.0
12.0
18.0
—/—
10.5/12.0
20.8/24.1
31.4/36.1
41.4/47.9
—/—
6.0
12.0
18.0
24.1
—/—
18.3/20.8
36.1/41.7
54.3/62.5
72.1/83.3
—/—
6.0
12.0
18.0
24.1
—/—
10.5/12.0
20.8/24.1
31.4/36.1
41.4/47.9
—/—
6.0
12.0
18.0
24.1
POWER SUPPLY
MCA
16.8/16.8
29.9/31.8
42.8/46.9
56.1/61.9
18.6/18.6
31.1/23.6
44.6/48.7
57.8/63.7
9.9
16.9
24.4
31.9
21.7/21.7
34.8/36.7
47.7/51.8
60.9/66.8
73.4/81.6
10.8
18.3
25.8
33.3
40.9
21.7/21.7
34.8/36.7
47.7/51.8
61.0/66.8
73.7/81.8
10.9
18.4
25.9
33.4
41.0
29.2/29.2
42.3/44.2
55.2/59.3
68.4/74.3
81.2/89.3
14.7
22.2
29.7
37.2
44.8
MAX FUSE
OR CKT. BKR.
20/20
30/35
45/50
—/—
25/25
35/35
45/50
60/—
15
20
25
35
30/30
35/40
50/50
—
—
15
20
30
35
45
25/25
35/40
50/60
—
—
15
20
30
35
45
35/35
45/45
60/60
—
—
20
25
30
40
45
MOCP
—
—
—
60/70
—
—
—
—/70
—
—
—
—
—
—
—
70/70
80/90
—
—
—
—
—
—
—
—
70/70
80/90
—
—
—
—
—
—
—
—
70/80
90/90
—
—
—
—
—
50ZH
UNIT
SIZE
50ZH
(–SERIES)
17
Typical wiring schematic — 208/230-3-60
50ZH
18
50ZH
Typical wiring schematic — 460-3-60
19
Typical wiring schematic (cont)
BRN (COMMON)
C
W1
W1
TO
UNIT POWER
WIRING
VIO (STEP 2)
WHT ( STEP 1)
CONTACTOR 2
BRN
BLK
YEL
YEL
YEL
50ZH
FUSE BLOCK
F3 YEL
CONTACTOR 1
BRN
EL 1
AUTO-LIMIT
BLK
L2
F4
YEL
YEL
YEL
EL 2
BLK
L1
F1
BLK
YEL
YEL
EL 3
BLK
F2
BLK
Electric Heater Wiring
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
LEGEND
FLA
LRA
MCA
MOCP
RLA
—
—
—
—
—
Full Load Amps
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
Rated Load Amps
®
*Heater capacity (KW) based on heater voltage of 208v, 240v, & 480v.
If power distribution voltage to unit varies from rated heater voltage,
heater KW will vary accordingly.
NOTES:
1. In compliance with NEC (National Electrical Code) requirements
for multimotor and combination load equipment (refer to NEC
Articles 430 and 440), the overcurrent protective device for the
unit shall be Power Supply fuse . The CGA (Canadian Gas
Association) units may be fuse or circuit breaker.
2. Minimum wire size is based on 60 C copper wire. If other than
60 C wire is used, or if length exceeds wire length in table,
determine size from NEC.
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percentage of voltage imbalance.
% Voltage imbalance
max voltage deviation from average voltage
= 100 x
average voltage
20
Average Voltage = 452 + 464 + 455
3
1371
=
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 452 = 5 v
(BC) 464 457 = 7 v
(AC) 457 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
Controls
Sequence of operation
When compressor time delay (5 ± 2 minutes) is completed,
a circuit is made to C, starting COMP and OFM. Circuit RG also is completed, energizing IFR and starting IFM after a
1-second delay.
When power is supplied to unit, the transformer (TRAN) is
energized.
Cooling — With the thermostat subbase in the cooling
position, and when the space temperature comes within 2°F
of the cooling set point, the thermostat makes circuit R-O.
This energizes the reversing valve solenoid (RVS) and places
the unit in standby condition for cooling.
As the space temperature continues to rise, the second stage
of the thermostat makes, closoing circuit R-Y. When
compressor time delay (5 ± 2 minutes) is completed, a circuit
is made to contactor (C), starting the compressor (COMP)
and outdoor-fan motor (OFM). Circuit R-G is made at the
same time, energizing the indoor-fan relay (IFR) and starting
the indoor-fan motor (IFM) after a 1-second delay.
Defrost — Defrost board (DB) is a time and temperature
control, which includes a field-selectable time period
between checks for defrost (30, 50, and 90 minutes).
Electronic timer and defrost cycle start only when contactor
is energized and defrost thermostat (DFT) is closed.
When the thermostat is satisfied, contacts open, deenergizing
C. The COMP and OFM stop, and the IFM stops after a 30
second time delay.
Defrost mode is identical to cooling mode, except outdoorfan motor stops and a bank of optional electric heat turns on
to warm air supplying the conditioned space.
Heating — On a call for heat, thermostat makes circuits
R-Y and R-G.
Typical Installation
INDOOR
THERMOSTAT
RETURN
AIR
FROM
POWER
SOURCE
TOP COVER
POWER AND
LOW-VOLTAGE
ENTRY
COMPOSITE
RUST-PROOF
BASEPAN
Power Wiring
CONDENSATE
DRAIN
CONNECTION
Control Wiring
Condenser Airflow
Evaporator Airflow
DISCONNECT
PER NEC*
(UNIT AND
ELECTRIC
HEATER)
*Separate disconnect per NEC
(National Electrical Code) required
for electric heater when singlepoint conection is not used.
C00008
Application data
Condensate trap — A 2-in. condensate trap must be field
supplied.
1” MIN.
TRAP
OUTLET
2” MIN.
Maximum cooling airflow — To minimize the possibility
of condensate blow-off from the evaporator, airflow through
the units should not exceed 450 cfm/ton.
Minimum cooling airflow — The minimum cooling airflow
is 350 cfm/ton.
Minimum cooling operating outdoor air temperature —
All standard units have a minimum ambient operating
temperature of 40°F. With accessory low ambient temperature
kit, units can operate at temperatures down to 0°F.
Maximum operating outdoor air temperature — Maximum
outdoor operating air temperature for cooling is 125°F.
21
50ZH
Should room temperature continue to fall, circuit R-W is
made through second-stage thermostat bulb. If optional
electric heat package is used, a relay is energized, bringing
on first bank of supplemental electric heat. When thermostat
is satisfied, contacts open, deenergizing contactor and relay;
motors and heaters deenergize. The IFM may be controlled
by a time-delay relay that keeps the fan on for 30 seconds.
Guide specifications
SMALL PACKAGE PRODUCT AIR-TO-AIR HEAT PUMP
CONSTANT VOLUME APPLICATION
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 2-1/2 TO 5 TONS, NOMINAL (COOLING)
21,800 TO 52,500 BTUH, NOMINAL
(HEATING)
50ZH
MODEL NUMBER: 50ZH
PART I - GENERAL
1.01 SYSTEM DESCRIPTION
Outdoor package, electrically controlled, air-to-air heat
pump utilizing a scroll compressor for heating and
cooling duty. Unit shall discharge supply air horizontally
as shown on contract drawings.
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standards 210/
240-89, and 270-84. Designed in accordance with UL
Standard 1995.
B. Unit shall be designed to conform to ASHRAE 15.
C. Unit shall be UL listed as a total package for safety
requirements.
D. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be stored and handled per manufacturer’s
recommendations.
PART 2- PRODUCTS
2.01 EQUIPMENT
A. General:
Factory-assembled, single piece, air-to-air heat pump.
Contained within the unit enclosure shall be all factory
wiring, piping, controls, and refrigerant charge (R-22).
B. Unit Cabinet:
1. Unit cabinet shall be constructed of phosphated,
bonderized, zinc-coated, prepainted steel.
2. Basepan shall be made of a single-piece non-corrosive,
composite material.
3. Indoor fan compartment cabinet surfaces shall be insulated with a minimum 1/2 in. thick, flexible insulation,
coated on the air side, with aluminum foil-faced
insulation.
4. Cabinet panels shall be easily removable for servicing.
5. Unit shall have a factory-installed, sloped, noncorrosive, condensate drain.
6. Unit insulation conforms to ASHRAE 62P.
C. Fans:
1. Indoor Blower (Indoor Fan):
a. Fan shall be 2- or 3-speed, direct drive as shown on
the equipment drawings.
b. Fan wheel shall be made from steel, be double-inlet
type. It shall have forward-curved blades with a
corrosion-resistant finish and shall be dynamically
balanced.
2. Outdoor fan shall be of the direct-driven propeller type
with aluminum blades, riveted to corrosion-resistant
steel spiders. It shall be dynamically balanced, and shall
discharge air upwards.
22
D. Compressor:
Fully hermetic scroll, type with internal and external vibration isolation.
E. Coils:
1. Indoor and outdoor coils shall have aluminum-plate fins
mechanically bonded to seamless copper tubes with all
joints brazed.
2. Tube sheet openings shall be bellied to prevent tube
wear.
3. Outdoor coil shall be protected by metal louvered
panels.
F. Refrigerant Components:
1. Fixed orifice feed system.
2. Service gage connections on suction, discharge and
liquid lines.
3. Equipped with liquid line strainers.
4. Equipped with liquid line loss of charge switch.
G. Controls and Safeties:
1. Unit Controls:
a. Unit shall be complete with self-contained lowvoltage control circuit.
b. Defrost board is equipped with 5 minute compressor
time delay protection.
c. Unit shall incorporate an outdoor-coil defrost system
to prevent excessive frost accumulation during
heating duty, and shall be controlled as follows:
1) Defrost shall be initiated on the basis of time and
coil temperature.
2) A 30/50/90 minute timer shall activate defrost
cycle only if coil temperature is low enough to
indicate a heavy frost condition.
3) Defrost cycle shall terminate when defrost
thermostat is satisfied or shall have a positive
termination time of 10 minutes.
2. Safeties:
Compressor, overtemperature, overcurrent.
H. Operating Characteristics:
1. Unit shall be capable of starting and running at 115°F
ambient outdoor temperature per maximum load criteria
of ARI Standard 240-89.
2. Compressor with standard controls shall be capable of
operation down to 40° F ambient outdoor temperature in
cooling duty.
3. Compressor shall be capable of operation in heating
duty down to –20° F ambient outdoor-air temperature.
4. Unit shall be capable of simultaneous heating duty and
defrost cycle operation when using electric heaters
indicated in Section K, Special Features.
5. Compressors will be prevented from restarting for a
minimum of 5 minutes after shutdown.
I. Electrical Requirements:
All unit power wiring shall enter unit cabinet at a single
location.
J. Motors:
1. Compressor motors shall be of the refrigerant-cooled
type with line break thermal and current overload
protection.
2. All fan motors shall have permanently lubricated bearings and inherent automatic-reset thermal overload
protection.
3. Outdoor-fan motor shall be totally enclosed.
K. Special Features:
1. Electric Resistance Heaters:
a. Open-wire nichrome elements with all necessary
safety and operating controls.
b. Heaters are UL listed as indicated on basic unit informative plate.
c. Each heater assembly shall include the following
safety features:
1) Automatic-reset switches
2) Heat limiters for primary and secondary, overcurrent, and thermal protection.
d. Available with power single-point connections.
2. Outdoor Thermostat Kit:
Thermostat allows for staging of electric heaters based
on outdoor-air temperature.
3. Thermostat and Subbase:
Provides staged cooling and heating automatic (or
manual) changeover, fan control.
4. Electronic Programmable Thermostat:
Thermostat provides 2-stage heating and 2-stage cooling
control with remote communication ability.
L. Grille
1. Louvered Grille:
Louvered grille shall be standard on all units.
M. Special Features Available
1. Coil Options:
Shall include factory-installed optional copper/copper and vinyl-coated refrigerant coils.
2. Economizer:
a. Economizer controls capable of providing free
cooling using outside air.
b. Equipped with low leakage dampers not to exceed
3% leakage, at 1.0 in. wg pressure differential.
c. Spring return motor shuts off outdoor damper on
power failure.
3. Flat Roof Curb:
4.
5.
6.
7.
8.
9.
10.
11.
Curbs shall have seal strip and a wood nailer for flashing and shall be installed per manufacturer’s instructions.
Manual Outdoor Air Damper:
Package shall consist of damper, birdscreen, and rainhood which can be preset to admit outdoor air for yearround ventilation.
Thermostat:
To provide for one-stage heating and cooling in addition manual or automatic changeover and indoor fan
control.
Low Ambient Package:
Shall consist of a solid-state control and outdoor coil
temperature sensor for controlling outdoor fan motor operation, which shall allow unit to operate
down to 0° F outdoor ambient temperature in cooling.
Filter Rack Kit:
Shall provide filter mounting for downflow applications.
Square-To-Round Duct Transitions:
Shall have the ability to convert the supply and return
openings from rectangular to round. (030-048 only)
Crankcase Heater:
Shall provide anti-floodback protection for low-load
cooling applications. (Standard on 042-060 sizes)
Electric heaters:
a. Electric heater shall be available as a field-installed
option.
b. Heater elements shall be open wire type, adequately
supported and insulated with ceramic bushings.
c. Electric heater packages must provide single point
power connection capability.
Compressor Hard start kit:
Shall be available to give a boost to the compressor
motor at each start-up.
23
50ZH
Guide specifications (cont)
Copyright 2006 Carrier Corp. • 7310 W. Morris St. • Indianapolis, IN 46231
Printed in U.S.A.
Manufacturer reserves the right to change, at any time, specifications or designs without notice and obligations
edition date: 3/06
Catalog No: 50ZH-5PD
Replaces: 50ZH-4PD