Bryant-Carrier 50ZHC User Manual

50ZHC
14 SEER Single P ackaged Heat Pump System
with Puronr (R---410A) Refrigerant
Single Phase
2 to 5 Nominal Tons (024 ---060)

Product Data

Single--Packaged Heat Pump Units with:

S Easy installation design

S Corrosion--proof unit base

S Class leading sound ratings

S Sloped drain for improved indoor air quality

S Scroll compressors

S Front and side service access

S Louvered panel coil protection

S Certified to leak 2% or less of nominal air conditioning CFM

delivered when pressurized to 1--in. W.C with all present air

inlets, air outlets, and condensate drain port(s) sealed.

This unit is a packaged heat pump for manufactured housing,
residential, and light commercial applications. Factory assembled
package is a compact, horizontal supply and return unit, combining
easy installation and maintenance with efficient performance.

EASY TO INSTALL—The units are lightweight, compact single

A10165

024--048 Size

A150067

060 Size

Fig. 1 -- Unit 50ZHC

package units that are easy to handle. Every size unit has an
identical 32 by 51--in. (813 by 1295 mm) footprint to make job
site planning simple. The efficient design uses less sheet metal and
makes the 50ZHC units lighter than competitive units. The unit can
be easily positioned on the job site with the hand-- holds built into
the unit basepan.

AERODYNAMIC FAN BLADE DESIGN reduces overall sound
by up to 3dBA; low as 73dBA.

SERVICE ACCESS—The units are designed to be serviced from
both front and side. Routine maintenance tasks, such as coil
cleaning, are sped up with the multiple side panels design.

CORROSION PROOF UNIT BASE—The 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 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 corrosion--resistant finish 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.

SCROLL COMPRESSORS—Each unit comes standard with a
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.

DEFROST SYSTEM—The system provides time/
temperature--based defrost cycles to maintain unit efficiency. This

1

FEATURES/BENEFITS

highly reliable system monitors coil temperature and initiates a
defrost cycle only if it is required. The defrost cycle ends as soon as
defrosting is complete.

ACCESSORY ELECTRIC HEATERS —A variety of accessory
electric heaters are available for these units. These heaters are
comprised of a separate heater module mounted on the blower inlet
and remote mounted controls located in the unit control box.
Single point electrical connections are provided for powering both
the heater and the unit.

START COLLARS—Start collars are provided with each unit to
provide easy connection to the structure ductwork.

MODEL NUMBER NOMENCLATURE

DEPENDABLE COMPONENTS—Direct--drive, multi--speed

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(4.4C). It’s high efficiency design
ensures high performance with most duct systems.

REFRIGERANT SYSTEM is designed to provide dependability.
Liquid refrigerant filter driers 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.

50ZHC

Typ e o f Un i t
50ZHC ---Single Packaged He at

50ZHC

Pump System

Nominal Cooling Capacity
024 --- 2.0 Tons
030 --- 2.5 Tons
036 --- 3.0 Tons
042 --- 3.5 Tons
048 --- 4.0 Tons
060 --- 5.0 Tons

N/A

024

--- --- ---

3

Electrical Supply
3 --- 208/230 --- 1 ---60

0

--- ---

Options

TP --- Base unit with tin plated indoor coi l hairpins

Only used if ordering an option

Series

TABLE OF CONTENTS

FEATURES/BENEFITS 1.........................................................................................

MODEL NUMBER NOMENCLATURE 2...........................................................................

AHRI CAPACITY RATINGS 3....................................................................................

PHYSICAL DATA 4.............................................................................................

ACCESSORIES 5...............................................................................................

DIMENSIONAL DRAWINGS 6...................................................................................

SELECTION PROCEDURE 9.....................................................................................

PERFORMANCE DATA 11.......................................................................................

TYPICAL WIRING SCHEMATICS 21..............................................................................

CONTROLS 23.................................................................................................

APPLICATION DAT A 23.........................................................................................

GUIDE SPECIFICATIONS 24.....................................................................................

PAGE

2

AHRI* CAPACITIES

Cooling Capacities and Efficiencies

UNIT SIZE NOMINAL TONS

024 2 800 24,000 11.50 14.50
030 2.5 1000 29,800 11.50 14.50
036 3 1200 36,000 11.50 14.50
042 3.5 1400 42,000 11.50 14.50
048 4 1600 46,500 11.50 14.00
060 5 1700 55,000 11.00 14.00

STANDARD

CFM

Heat Pump Heating Capacities and Efficiencies

NET HEATING

UNIT SIZE

024 23,400 3.7 13,400 2.4 8.0
030 28,600 3.7 15,600 2.4 8.0
036 34,400 3.5 20,200 2.4 8.0
042 40,000 3.5 23,400 2.4 8.0
048 45,000 3.5 26,600 2.3 8.0
060 56,000 3.5 34,000 2.4 8.0

LEGEND
dB---Sound Levels (decibels)
db—Dry Bulb
SEER—Seasonal Energy Efficiency Ratio
wb—Wet Bulb
COP---Coefficient of Performance
* Air Conditioning Heating & Refrigeration Institute
† At "A" conditions--80°F (26.7°C) indoor db/67°F (19.4°C) indoor wb & 95°F (35°C) outdoor db.
** Rated in accordance with U.S. Government DOE Department of Energy) test procedures and/or AHRI Standards 210/240.
Notes:

1. Ratings are net values, reflecting the effects of circulating fan heat.
Ratings are based on:
Cooling Standard: 80°F (26.7°C) db, 67°F wb (19.4°C) indoor entering---air temperature and 95°F db (35°C) outdoor entering---air temperature.

2. Before purchasing this appliance, read important energy cost and efficiency information available from your retailer.

CAPACITY AT 47° F

(8.3° C) (Btuh)

COP @ 47° F

(8.3° C)

NET COOLING CAPA-

CITY AT 95° F (35° C)

(Btuh)

NET HEATING

CAPACITY AT 17° F

(-8.3° C) (Btuh)

EER† SEER**

COP @ 17° F

(-8.3° C)

HSPF**

50ZHC

Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.

A--Weighted Sound Power Level (dBA)

UNIT
SIZE

STANDARD RATING

(dBA)

24 73 54.4 54.9 58.8 67.5 53.7 48.5 39.4
30 75 55.4 63.9 62.8 59.0 54.7 45.5 37.9
36 74 60.4 58.9 62.8 63.0 58.7 52.5 45.4
42 79.5 59.9 64.4 69.3 68.0 65.2 63.0 60.4
48 75.6 59.9 64.4 64.8 65.0 59.7 55.5 48.9
60 79.0 67.6 65.7 68.6 70.5 65.3 59.8 50.0

TYPICAL OCTAVE BAND SPECTRUM (dBA without tone adjustment)

125 250 500 1000 2000 4000 8000

3

PHYSICAL DATA

UNIT SIZE 024 030 036 042 048 060

NOMINAL CAPACITY (ton) 2 2.5 3 3.5 4 5

SHIPPING WEIGHT (lb)

COMPRESSOR TYPE SCROLL

REFRIGERANT R-410A

REFRIGERANT QUANTITIY (lb)

OUTDOOR METERING DEVICE TXV Piston TXV Piston

ORIFICE ID (in.)

OUTDOOR COIL

ROWS...FINS/in.

FACE A REA ( sq . f t)

OUTDOOR FAN

NOMINAL AIRFLOW (cfm)

DIAMETER (in.)

DIAMETER (mm)

MOTOR HP (RPM)

50ZHC

*Required filter sizes shown are based on the AHRI (Air Conditionin g, Heating & Refrigeration Institute) rated airflow at a velocity of 300 ft/min (91 m) for throw­away type or 450 ft/min (137 m) for high capacity type. Recommended filters are 1 --- in. (25 mm) thick.

INDOOR METERING DEVICE Piston TXV TXV

ORIFICE ID (in.)

INDOOR COIL

ROWS...FINS/in.

FACE A REA ( sq . f t)

NOMINAL COOLING AIRFLOW (cfm)

INDOOR BLOWER

NOMINAL SIZE D x L (in.)

MOTOR (HP)

HIGH-PRESSURE SWITCH (psig)

LOW-PRESSURE SWITCH (psig)

CUTOUT

RESET (AUTO)

CUTOUT

RESET (AUTO)

RETURN-AIR FILTERS

THR OWAWAY (in.)

(kg)

QUANTITY (kg)

(mm)

(mm)

(mm)

(mm)

312
142

7.00

3.18

---

---

2...20

9.1

2000

20

508

1/8 (825)

0.059

1.499

3...12

4.3

800

10 x 8

254 x 203

1/3

20x20x1

508x508x25

333
151

7.20

3.27

0.049

1.245

2...20

10.2

2000

20

508

1/8 (825)

0.059

1.499

3...14

4.3

1000

11 x 9

279 x 229

1/3

610x762x25

24x30x1

334
152

6.30

2.86

0.057

1.448

2...20

10.2

2800

20

508

1/4 (1100)

0.067

1.702

3...12

4.9

1200

11 x 9

279 x 229

1/2

650 +/- 15
420 +/- 25

20 +/- 5

45 +/- 10

388
177

9.10

4.13

0.059

1.499

2...20

13.0

3100

20

508

1/4 (1100)

0.076

1.9304

3...14

4.9

1400

11 x 9

279 x 229

1/2

407
185

7.70

3.49

---

---

2...20

15.5

3100

20

508

1/4 (1100)

---

---

3...14

4.9

1600

11 x 9

279 x 229

3/4

24x36x1

610x914x25

475
215

11.5

5.22

0.070

1.778

2...20

15.5

3300

20

508

1/3 (1100)

---

---

3...14

4.9

1700

12 x 11

305 x 279

1

4

OPTIONS AND ACCESSORIES

FACTOR Y

ITEM DESCRIPTION

Coil Options Base u nit with tin plated indoor coil hairpins X

Compressor Start Kit

Corporate Thermostats

Crankcase Heater

Electric Heaters Electric Heat Supplement X

Low Ambient Kit

Time Guard II

Refer to Price Pages for available accessories.

Compressor Start K it assists compressor start ---up by providing
additional starting torque.

Thermostats provide control for the system heating and cooling
functions.

Crankcase Heater provides anti ---floodback protection for low --­load coolin g applications.

Low Ambient Kit (Motormaster II Control) allows the use of mech­anical cooling down to outdoor temperatures as low as 0°F
( --- 18° C) when properly installed.

Automatically prevents the compressor from restarting for at least
4 minutes and 45 seconds after shutdown of the compressor. Not
required when a corporate programmable thermostat is applied.

INSTALLED

OPTION

Accessory Electric Heater Usage

CATALOG

ORDERING NO.

NOMINAL

CAPACITY (kW)

CIRCUIT

BREAKER

(Yes/No)

STAGES

024 030 036 042 048 060

CPHEATER125A0* 3.8 / 5.0 No 1    
CPHEATER126A0* 3.8 / 5.0 Yes 1      
CPHEATER127A0* 5.6 / 7.5 No 2 
CPHEATER128A0* 5.6 / 7.5 Yes 2      
CPHEATER129A0* 7.5 / 10.0 No 2 NONE
CPHEATER130A0* 7.5 / 10.0 Ye s 2      
CPHEATER131A0* 11.3 / 15.0 Yes 2    
CPHEATER132A0* 15.0 / 20.0 Yes 2  

 Approved combination

USED WITH SIZES

FIELD

INSTALLED

ACCESSORY

X

X

X*

X

X

50ZHC

Multiplication Factors

HEATER kW RATING VOLTAGE DISTRIBUTION MULTIPLICATION FACTOR

200 .69

240

Example: 15.0 kW (at 240v) heater on 208v

=15.0(.75multfactor)
= 11.25 capacity at 208v

208 .75

230 .92

240 1.00

5

BASE UNIT DIMENSIONS—024--036

50ZHC

A14554

6

BASE UNIT DIMENSIONS—042--048

50ZHC

A14555

7

BASE UNIT DIMENSIONS—060

50ZHC

A150071

8