Carrier Comfort 50EZ-A, Comfort 50EZ-A24, Comfort 50EZ-A30, Comfort 50EZ-A36, Comfort 50EZ-A42 Product Data

...

Page 1

50EZ ---A Comfortt Single --- Packaged Heat Pump System with PuronR (R ---410A) Refrigerant S i n g l e --- A n d T h r e e --- P h a s e U n i t s 2to5NominalTons(Sizes24---60)

Product Data

Innovative Unit Base Design

On the inside a high--tech composite material will not rust and incorporates a sloped drain pan which improves drainage and helps inhibit mold, algae and bacterial growth. On the outside metal base rails provide added stability as well as easier handling and rigging.

Durable, dependable components Compressors are designed for high efficiency. Each compressor is hermetically sealed against contamination to help promote longer life and dependable operation. Each compressor also has vibration isolation to provide quieter operation. All compressors have internal high pressure and overcurrent protection.

Direct--drive multi--speed brushless DC blower motor is standard on all 50EZ--A models. Direct--drive, PSC (Permanent Split Capacitor)condenser--fan motors are designed to help reduce energy consumption and provide for cooling operation down to 40_F(4.4_C) outdoor temperature. MotormasterR II low ambient kit is available as a field installed accessory.

Thermostat controls designed to work as a system with Carrier’s small packaged product.

A09034

Fig. 1 -- Unit 50EZ--A

Single--Packaged Products with Energy--Saving Features and PuronR refrigerant.

S Up to 13.5 SEER S Up to 7.7 HSPF S Up to 11.5 EER at 95_FOD S Factory--Installed TXV S Multi-- Speed High Efficiency DC Blower--Standard S Dehumidification Feature

FEATURES/BENEFITS

One--piece Heat Pump unit with optional electric heater, low installation cost, dependable performance and easy maintenance.

Efficient operation High--efficiency design with SEERs (Seasonal Energy Efficiency Ratio) of up to 13.5.

Puron Environmentally Sound Refrigerant is Carrier’s unique refrigerant designed to help protect the environment. Puron is an HFC refrigerant which does not contain chlorine that can harm the ozone layer. Puron refrigerant is in service in millions of systems, proving highly reliable, environmentally sound performance.

Easy Installation

Factory--assembled package is a compact, fully self--contained, heat pump unit that is prewired, pre--piped, and pre--charged for minimum installation expense. These units are available in a variety of standard capacity ranges with voltage options to meet residential and light commercial requirements. Units are lightweight and install easily on a rooftop or at ground level. The high tech composite base eliminates rust problems associated with ground level applications.

Thermostatic Expansion Valve -- A hard shutoff, balance port TXV maintains a constant superheat at the evaporator exit (cooling cycle) resulting in higher overall system efficiency.

Refrigerant system is designed to provide dependability. Liquid filter driers are used to promote clean, unrestricted operation. Each unit leaves the factory with a full refrigerant charge. Refrigerant service connections make checking operating pressures easier.

High and Low Pressure Switches provide added reliability for the compressor.

Indoor and Outdoor coils are computer--designed for optimum heat transfer and efficiency. The indoor coil is fabricated from copper tube and aluminum fins and is located inside the unit for protection against damage. The outdoor coil is internally mounted on the top tier of the unit.

Low sound ratings ensure a quiet indoor and outdoor environment with sound ratings as low as 74dBA.

Easy to service cabinets provide easy 3--panel accessibility to serviceable components during maintenance and installation. The base with integrated drain pan provides easy ground level installation with a mounting pad. A nesting feature ensures a positive basepan to roof curb seal when the unit is roof mounted. A convenient 3/4 -- in. wide perimeter flange makes frame mounting on a rooftop easy.

Convertible duct configuration

Unit is designed for use in either downflow or horizontal applications. Each unit is converted from horizontal to downflow and includes two horizontal duct covers. Downflow operation is provided in the field to allow vertical ductwork connections. The basepan seals on the bottom openings to ensure a positive seal in the vertical airflow mode.

Cabinets are constructed of heavyduty, phosphated, zinc--coated prepainted steel capable of withstanding 500 hours in salt spray. Interior surfaces of the evaporator and electric heater compartments are insulated with cleanable semi-- rigid insulation

Page 2

board, which keeps the conditioned air from being affected by the outdoor ambient temperature and provides improved indoor air quality. (Conforms to American Society of Heating, Refrigeration and Air Conditioning Engineers No. 62P.) The sloped drain pan minimizes standing water in the drain. An external drain is provided.

Short--Cycling protection for the compressor is incorporated into our defrost control board ensuring a five minute delay (+/--2 minutes) before restarting compressor after shutdown for any reason.

50EZ -- A

MODEL NUMBER NOMENCLATURE

50EZ

--A

TABLE OF CONTENTS

FEATURES/BENEFITS 1--2.............................

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

ARI CAPACITIES 3...................................

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

OPTIONS AND ACCESSORIES 5.......................

BASE UNIT DIMENSIONS 8--9.........................

ACCESSORY DIMENSIONS 10.........................

SELECTION PROCEDURE 11..........................

PERFORMANCE DATA 12--20..........................

TYPICAL PIPING AND WIRING 20.....................

APPLICA TION DATA 21...............................

ELECTRICAL DATA 22--23............................

TYPICAL WIRING SCHEMA TICS 24--26.................

CONTROLS 27.......................................

GUIDE SPECIFICATIONS 28--29........................

--- --- ---

--- ---

Typ e of Uni t 50EZ --- Single Packaged

Heat Pump

System

N/A

Major Series

Nominal Cooling Capacity 24 --- 2.0 Tons 30 --- 2.5 Tons 36 --- 3.0 Tons 42 --- 3.5 Tons 48 --- 4.0 Tons 60 --- 5.0 Tons

N/A

Minor Series

Electrical Supply 3 --- 208/230 ---1 --- 60 5 --- 208/230 ---3 --- 60 6 --- 4 6 0 --- 3 --- 6 0

Options

TP --- B ase unit with tin plated indoor coil ha irpins

See Price Page fo r full list of factory options. Only used if ordering an option

Page 3

ARI* CAPACITIES

COOLING CAPACITIES AND EFFICIENCIES

UNIT 50EZ --A NOMINAL TONS STANDARD CFM

2 4 -- -- -- 3 0 2 800 23,800 11. 5 13.5 30-- -- --30/50 2--1/2 1000 29,000 11. 5 13.5 36-- -- --30/50 3 1200 35,000 11. 5 13.5 42-- -- --30/50 3--1/2 1400 40,000 11. 5 13.2 48-- -- --30/50 4 1600 47,000 11. 5 13.5 60-- -- --30/50 5 1850 57,000 11. 5 13.5

HEAT PUMP HEATING CAPACITIES AND EFFICIENCIES

HEATING

UNIT 50EZ ---A

2 4 -- -- -- 3 0 23,400 3.5 10,800 2.2 7.7

30-- -- --30/50 29,000 3.5 15,900 2.2 7.7

36-- -- --30/50 /60 35,000 3.4 20,400 2.3 7.7

42-- -- --30/50/60 40,000 3.4 22,000 2.2 7.7 48-- -- --30/50/60 46,500 3.6 26,200 2.3 7.7 60-- -- --30/50/60 57,000 3.5 31,000 2.3 7.7

CAPACITY (Btuh) @

47_F(8.3_C)

COP @ 47_F(8.3_C)

COOLING

CAPACITIES (Btuh)

HEATING

CAPACITY (Btuh) @

17_F ( --- 8 . 3 _C)

EER** SEER†

COP @

17_F

( --- 8 . 3 _C)

HSPF†

50EZ -- A

LEGEND

d B --- Sound Levels (decibels) db—Dry Bulb SEER—Seasonal Energy Efficiency Ratio wb—Wet Bulb COP--- Coefficient of Performance HSPF ---Heating Season Performance Factor

* Air Conditioing & 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 an d/or ARI 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 (19.4_C ) w b i n d o o r e n t e r i n g --- air temperature and 95°F(35_C)dboutdoorentering---airtemperature.

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

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PHYSICAL DATA -- UNIT 50EZ--A

UNIT SIZE 50EZ--- A24 50EZ --- A30 50EZ--- A36 50EZ --- A42 50EZ--- A48 50EZ --- A60

NOMINAL CAPACITY (ton) 2 2.5 3 3.5 4 5

SHIPPING WEIGHT} (lb)

COMPRESSOR QUANTITY 1

Refrigerant (R---410A) Quantity (lb)

Diameter Motor HP (RPM)

50EZ -- A

Nominal Cooling Airflow (CFM)

HIGH --- PRES SURE SWITCH (psig)

L O S S --- O F --- C H A R G E / L O W --- PR E S SU R E

RETURN--- AIR FILTERS*{

*Required filter sizes shown are based on the larger of the ARI (Air conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft/minute for throwaway type or 450 ft/minute for high ---capacity type. Air filter pressure drop for non --- standard filters must not exceed 0.08 IN. W.C.

{ If using accessory filter rack refer to the filter rack installation instructions for correct filter size and quantity. } For 460 volt units, add 14 lb (6.4 kg) to the weight.

TYPE SCROLL COMPRESSOR

REFRIGERANT R--- 410A

Quantity (kg)

METERING DEVICE ID TXV

ORIFICE OD (in.)

OUTDOOR COIL

Rows... Fins/in.

face area (sq. ft.)

OUTDOOR FAN

Nominal Airflow (CFM)

Fan Diameter (in.)

Fan Diameter (mm)

INDOOR COIL

Rows... Fins/in.

face area (sq. ft.)

INDOOR BLOWER

Size (in.)

Motor (HP)

Cutout

Reset (Auto)

SWITCH

(Liquid Line) (psig)

Cutout

Reset (Auto)

throwaway (in.)

(kg)

(mm)

327 148

9.6

4.4

0.032 (2) .81

2...21

11.9

2700

610

1/5 (810)

3...17

3.7

800

10x10

254x254

1/2

20x20x1

508x508x25

340 154

10.2

4.6

0.035 (2) .89

2...21

11.9

2700

610

1/5 (810)

3...17

3.7

1000

10x10

254x254

1/2

20x24x1

508x610x25

343 156

7.9

3.6

0.037 (2) .94

2...21

11.9

2700

610

1/5 (810)

3...17

3.7

1200

11x10

279x254

3/4

419 190

10.0

4.5

0.038 (Left OD Coil)

0.040 (Right OD Coil) .97/1.02

2...21

13.6

3100

660

1/5 (810)

3...17

4.7

1400

11x10

279x254

3/4

650±15 420±25

20±5

45±10

20±5

45±10

24x30x1

610x762x25

437 198

9.6

4.4

0.046 (2)

1.2

2...21

13.6

3100

660

1/5 (810)

3...17

4.7

1600

11x10

279x254

1.0

24x36x1

610x914x25

462 210

12.3

5.6

0.052 (2)

1.3

2...21

17.5

3100

660

1/5 (810)

3...17

5.7

1850

11x10

279x254

1.0

A-Weighted Sound Power Level (dBA)

STANDARD

MODEL 50EZ ---A

2 4 --- --- --- 30 76 57.0 65.5 72.0 71.0 67.0 62.0 53.0 3 0 --- --- --- 30 / 5 0 76 60.5 67.5 72.0 70.0 67.0 61.0 51.5 3 6 --- --- --- 30 / 5 0 77 63.0 68.0 73.0 71.0 67.0 62.0 55.0 4 2 --- --- --- 30 / 5 0 78 65.0 68.5 74.5 72.5 69.5 64.5 56.5 4 8 --- --- --- 30 / 5 0 78 62.0 68.5 74.0 72.5 70.0 64.0 56.0 6 0 --- --- --- 30 / 5 0 76 63.0 66.5 69.5 71.0 66.0 65.0 59.0

NOTE: Tested in accordance with ARI Standard 270 (not listed in ARI ).

RATING

(dBA)

TYPICAL OCTAVE BAND SPECTRUM (dBA) (without tone adjustment)

125 250 500 1000 2000 4000 8000

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OPTIONS AND ACCESSORIES

FACTORY

ITEM DESCRIPTION

Coil Options Base unit with tin plated indoor coil h airpins X

Compressor Start Kit

Corporate Thermostats

Crankcase Heater

Economizer

Electric Heaters Electric Heat Supplement X

Filter Rack

Flat Roof Curbs

Low Ambient Kit

Louver Metal Outdoor Coil Grilles

Manual Outside Air Damper

S q u a r e --- t o --- R o u n d D u c t T r a n s i t i o n K i t

Time Guard II

*Refer to Price Page for application detail.

Compressor Start Kit assists compressor start - -- up by providing additional starting torque on sing phase units only. Thermostats provide control for the system heating and cooling functions. Crankcase Heater provides anti --- floodback protection for low --load cooling application s. Horizontal Economizer with solid state controls and barometric relief dampers includes filter racks and provide outdoor air during cooling and reduce compressor operation. Vertical Economizer with solid state controls and barometric relief dampers includes filter racks and provide outdoor air during cooling and reduce compressor operation.

Filter Rack features easy in stallation, serviceability, and high--filtering performance for vertical applications. Includes 1 ---in. filter. F l a t R o o f C u r b s i n b o t h 1 1 --- i n ( 2 7 9 m m ) a n d 1 4 --- i n . ( 3 5 6 m m ) sizes are available for roof mounted applications. Low A mbi ent Kit (Motormaster II Control) allows the use of mechanical cooling down to outdoor temperatures as low as 0°F ( ---18° C) when properly installed. Louver Metal Outdoor Coil Grilles provides hail and vandalism protection. Manual Outside Air Damper includes hood and filter rack with adjustable damper blade for up to 25% outdoor air. Square---to --- Round Duct Transition Kit enable 24 ---48 size units to be fitted to 14 in. (356 mm) round ductwork. 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 o r w i t h a R T U --- M P c o n t r o l .

INSTALLED

OPTION

INSTALLED

ACCESSORY

FIELD

50EZ -- A

ELECTRIC HEATERS

NOMINAL

ORDERING NO.

CPHEATER052A00 5.0 X X X CPHEATER064A00 5.0 X X X X X X CPHEATER070A00 7.2 X X X X X X CPHEATER050A00 10.0 X X X X X X CPHEATER066A00 15.0 X X X X X CPHEATER054A00 20.0 X X X

CPHEATER055A00 5.0 X X X X X CPHEATER056A00 10.0 X X X X CPHEATER068A00 10.0 X X X X X CPHEATER058A00 15.0 X X X X X CPHEATER059A01 20.0 X X X

CPHEATER060A00 5.0 X X X X CPHEATER061A00 10.0 X X X X CPHEATER062A00 15.0 X X X X CPHEATER063A00 20.0 X X X

NOTE: Electric heaters are rated at 240v. Refer to Multiplication Factors table for other vol tages.

X = Approved combination

CAPACITY (kW

@ 240 or 480

VOLTS)

24 30 36 42 48 60

208/230 --- SINGLE PHASE --- 60 HZ

208/230 --- T HRE E PHASE --- 60 HZ

4 6 0 --- T H R E E P H A S E --- 6 0 H Z

USED WITH SIZES

Minimum Airflow for Reliable Electric Heater Operation (cfm)

SIZE 50EZ--A24 50EZ--A30 50EZ--A36 50EZ--A42 50EZ--A48 50EZ--A60

AIRFLOW (CFM) 800 1025 1250 1400 1710 1800

Page 6

BASE

ECONOMIZER

COIL

FILTER

ECONOMIZER

CAULK BOTTOM CORNER

50EZ -- A

SIDE VIEW

OF ECONOMIZER ON EACH SIDE

FLANGE ON BASE

EV APORATOR COIL

COIL

DET

FILTER RACK

BEND FLANGE AT 90° -SCREW TO

DIVIDER WITH 1-IN. (25 mm)

TOP FILTER RACK

AIL

FI LTER

SCREW

ECONOMIZER

Vertical Economizer

Horizontal Economizer

MANUAL OUTSIDE AIR DAMPER

REPLACEMENT PANEL

BOTTOM FILTER RACK

MANUAL OUTSIDE AIR HOOD

DAMPER BLADE

A09375

Page 7

UNIT DIMENSIONS -- 50EZ--A24--36

50EZ -- A

A09136

Page 8

UNIT DIMENSIONS -- 50EZ--A42--60

50EZ -- A

A09137

Page 9

ACCESSORY DIMENSIONS

HVAC unit base rails

Anchor screw

Flashing field supplied

Roofing material field supplied

Cant strip field supplied

*Provided with roofcurb

HVAC unit basepan

ROOF CURB DETAIL

Sealing Gasket

Roofcurb

Wood nailer*

Roofcurb*

Insulation (field supplied)

A09090

COMMON CURB

SUPPLY

AIR

Dashed lines show cross support location for large basepan units.

A09096

50EZ -- A

SMALL BASE UNIT

LARGE

RETURN

AIR

BASE UNIT

LARGE CURB

UNIT SIZE

Small or

Large

* Part Numbers CPRCURB010A00 and CPRCURB011A00 can be used on both small and large basepan units. The cross supports must be located based on whether the unit is a small basepan or a large basepan. NOTES:

1. Roof curb must be set up for unit being installed.

2. Seal strip must be applied, as required, to unit being installed.

3. Roof curb is made of 16-- gauge steel.

4. Attach ductwork to curb (flanges of duct rest on curb).

5. Insulated panels: 1 --in. (25.4 mm) thick fiberglass 1 lb. density.

CATALOG

NUMBER

CPRFCURB010A00 11 (279) CPRFCURB011A00 14 (356) CPRFCURB012A00 11 (279) CPRFCURB013A00 14 (356)

IN. (mm)

A09095

B (small base)

IN. (mm)*

B (large base)

IN. (mm)*

10 (254)

14 (356) 16 (406) 47.8 (1214)

14 (356) 43.9 (1116)

UNIT PLACEMENT ON

COMMON CURB

A09094

SMALL OR LARGE BASE UNIT

IN. (mm)DIN. (mm)EIN. (mm)FIN. (mm)

32.4 (822)

2.7 (69)

A09097

Page 10

SELECTION PROCEDURE (WITH EXAMPLE)

1. Determine cooling and heating requirements at design conditions:

Given:

Required Cooling Capacity (TC) 34,500 Btuh..........

Sensible Heat Capacity (SHC) 26,000 Btuh............

Required Heating Capacity 60,000 Btuh...............

Condenser Entering Air Temperature 95°F(35°C).......

Indoor--Air Temperature 80°F(27°C) edb 67°F(19°C) ewb

Evaporator Air Quantity 1200 CFM..................

External Static Pressure 0.200 IN.W.C.................

Electrical Characteristics 208--1--60...................

2. Select unit based on required cooling capacity.

Enter Net Cooling Capacities table at condenser entering

temperature of 95°F(35°C). Unit 036 at 1200 cfm and 67°F (19°C) ewb (entering wet bulb) will provide a total capacity of 35,000 Btuh and a SHC of 26,200 Btuh. Calculate SHC correction, if required, using Note 4 under Cooling Capacities tables.

50EZ -- A

3. Select heating capacity of unit to provide design condition requirement.

In the Heating Capacities and Efficiencies table, note that the 36 size unit will deliver 35,000 BTUH at the ARI high temp rating point. To achieve 60,000 BTUH, accessory electric heat will be required. Use the Balance Point Worksheet to plot the load line with the unit capacity. The difference between the load line and unit capacity at the design heating temperature is the amount of electric heat that will be required.

4. Determine fan speed and power requirements at design conditions.

Before entering the air delivery tables, calculate the total static pressure required. From the given example, the Wet Coil Pressure Drop Table, and the Filter Pressure Drop Table:

External Static Pressure 0.200 IN. W.C.

Filter 0.130 IN. W.C. Wet Coil Pressure Drop 0.18

Total Static Pressure 0.51 IN. W.C. Enter the table for Dry Coil Air Delivery— At 0.50 IN. W.C.

ESP (external static pressure) and MEDIUM speed the motor delivers 1209 cfm.

IN. W.C.

5. Select unit that corresponds to power source available.

The Electrical Data Table shows that the unit is designed to operate at 208/230-- 1--60.

Page 11

Sys

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Sys

Tot a l

Sys KW

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens

22.38 22.38 1.57 21.54 21.54 1.78 20.63 20.63 2.01 19.64 19.64 2.27 18.54 18.54 2.56 17.33 17.33 2.88

23.32 21.00 1.58 22.26 20.45 1.79 21.13 19.85 2.02 19.92 19.18 2.27 18.63 18.50 2.56 17.36 17.36 2.88

23.73 17.21 1.58 22.64 16.69 1.79 21.47 16.14 2.02 20.21 15.55 2.27 18.82 14.89 2.56 17.32 14.19 2.88

25.65 17.94 1.60 24.48 17.42 1.81 23.23 16.87 2.04 21.88 16.28 2.30 20.41 15.64 2.58 18.80 14.93 2.89

28.26 14.67 1.65 26.98 14.19 1.86 25.61 13.68 2.08 24.14 13.14 2.34 22.52 12.55 2.62 20.77 11.88 2.93

23.50 23.50 1.60 22.59 22.59 1.81 21.61 21.61 2.04 20.54 20.54 2.30 19.37 19.37 2.58 18.07 18.07 2.90

24.02 22.63 1.60 22.92 22.02 1.81 21.77 21.32 2.04 20.58 20.58 2.30 19.40 19.40 2.58 18.10 18.10 2.90

24.39 18.39 1.61 23.24 17.85 1.81 22.02 17.28 2.04 20.69 16.67 2.30 19.25 15.98 2.58 17.68 15.23 2.90

26.34 19.21 1.63 25.11 18.67 1.84 23.80 18.10 2.07 22.38 17.48 2.32 20.84 16.81 2.60 19.17 16.06 2.92

29.00 15.54 1.68 27.64 15.04 1.89 26.19 14.53 2.12 24.66 13.93 2.37 22.98 13.29 2.65 21.15 12.59 2.95

24.45 24.45 1.63 23.48 23.48 1.84 22.45 22.45 2.07 21.31 21.31 2.32 20.06 20.06 2.61 18.69 18.69 2.93

24.64 24.10 1.63 23.54 23.54 1.84 22.49 22.49 2.07 21.34 21.34 2.32 20.10 20.10 2.61 18.71 18.71 2.93

24.92 19.53 1.63 23.72 18.97 1.84 22.45 18.37 2.07 21.07 17.72 2.32 19.58 17.01 2.60 17.97 16.22 2.92

26.89 20.43 1.66 25.60 19.87 1.87 24.25 19.27 2.10 22.78 18.63 2.35 21.18 17.93 2.63 19.46 17.14 2.94

29.56 16.36 1.71 28.16 15.83 1.92 26.67 15.26 2.15 25.07 14.65 2.40 23.33 13.99 2.67 21.45 13.27 2.98

EWB

(13.9)

_F(_C)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( ---17.8) 10 ( ---12.2) 20 ( ---6.7) 30 ( ---1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ Tot a l Integ Tot a l Integ Tot a l Integ Tot a l Integ Tot a l Integ Tot a l Integ To t a l Integ

700 7.81 7.18 1.51 10.21 9.39 1.62 13.03 11.96 1.71 15.49 14.05 1.76 18.20 15.95 1.81 21.29 21.29 1.87 24.98 24.98 1.97 29.37 29.37 2.13

800 7.93 7.29 1.51 10.35 9.52 1.62 13.17 12.09 1.70 15.63 14.18 1.74 18.38 16.11 1.78 21.53 21.53 1.83 25.30 25.30 1.92 29.63 29.63 2.05

900 8.02 7.38 1.52 10.45 9.62 1.62 13.28 12.19 1.69 15.76 14.29 1.73 18.54 16.24 1.76 21.73 21.73 1.80 25.52 25.52 1.89 29.60 29.60 2.0270700 7.49 6.89 1.59 9.88 9.10 1.70 12.47 11.44 1.79 15.29 13.87 1.86 17.96 15.74 1.91 20.99 20.99 1.97 24.59 24.59 2.07 28.92 28.92 2.23

800 7.61 7.00 1.59 10.04 9.24 1.70 12.72 11.68 1.78 15.43 14.00 1.83 18.14 15.89 1.87 21.22 21.22 1.93 24.90 24.90 2.02 29.27 29.27 2.16

900 7.71 7.09 1.59 10.16 9.35 1.70 12.88 11.82 1.77 15.55 14.10 1.82 18.28 16.02 1.85 21.42 21.42 1.90 25.15 25.15 1.99 29.31 29.31 2.1275700 7.14 6.57 1.67 9.56 8.80 1.79 12.14 11.14 1.88 15.07 13.67 1.96 17.72 15.52 2.01 20.69 20.69 2.08 24.22 24.22 2.18 28.47 28.47 2.34

800 7.25 6.67 1.67 9.71 8.93 1.78 12.31 11.30 1.86 15.22 13.81 1.93 17.89 15.68 1.98 20.92 20.92 2.03 24.53 24.53 2.12 28.86 28.86 2.28

CFM

900 7.37 6.78 1.67 9.83 9.04 1.78 12.46 11.43 1.86 15.35 13.92 1.92 18.04 15.81 1.95 21.11 21.11 2.00 24.76 24.76 2.09 28.98 28.98 2.22

PERFORMANCE DATA

EVAPORATOR AIR

CFM /

24 Cooling Extended Performance Table

0.11

700 /

0.15

800 /

0.20

900 /

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

24 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

INDOOR AIR

EDB

(_C)

Page 12

Syst

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Tot a l

Sys KW

Syst

Tot a l

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

Capacity MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

MBtuh

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens

27.44 27.44 2.00 26.40 26.40 2.22 25.31 25.31 2.47 24.13 24.13 2.75 22.83 22.83 3.07 21.42 21.42 3.44

28.39 25.49 2.00 27.09 24.83 2.22 25.75 24.11 2.47 24.34 23.30 2.75 22.88 22.88 3.07 21.45 21.45 3.44

28.86 20.79 2.00 27.53 20.17 2.22 26.13 19.52 2.47 24.63 18.84 2.75 23.00 18.09 3.07 21.25 17.29 3.44

31.27 21.73 2.02 29.83 21.10 2.24 28.33 20.46 2.49 26.73 19.77 2.76 25.00 19.04 3.08 23.14 18.24 3.45

34.57 17.68 2.04 32.97 17.10 2.26 31.32 16.50 2.51 29.56 15.87 2.79 27.68 15.20 3.10 25.66 14.44 3.46

28.78 28.78 2.04 27.67 27.67 2.26 26.49 26.49 2.50 25.23 25.23 2.78 23.84 23.84 3.11 22.33 22.33 3.47

29.25 27.45 2.04 27.91 26.71 2.26 26.55 26.55 2.50 25.27 25.27 2.79 23.88 23.88 3.11 22.37 22.37 3.47

29.64 22.24 2.04 28.24 21.59 2.26 26.76 20.92 2.51 25.20 20.20 2.78 23.51 19.42 3.10 21.69 18.56 3.47

32.09 23.29 2.05 30.58 22.64 2.28 29.00 21.96 2.52 27.32 21.25 2.80 25.54 20.48 3.12 23.60 19.64 3.48

35.47 18.74 2.08 33.78 18.14 2.30 32.02 17.52 2.55 30.20 16.83 2.82 28.25 16.11 3.14 26.14 15.32 3.49

29.95 29.95 2.07 28.75 28.75 2.29 27.50 27.50 2.54 26.15 26.15 2.82 24.69 24.69 3.14 23.10 23.10 3.51

30.03 30.03 2.07 28.81 28.81 2.30 27.55 27.55 2.54 26.20 26.20 2.82 24.73 24.73 3.14 23.14 23.14 3.51

30.27 23.63 2.07 28.80 22.96 2.29 27.27 22.26 2.54 25.65 21.50 2.82 23.91 20.68 3.14 22.05 19.77 3.50

32.74 24.80 2.09 31.17 24.11 2.31 29.54 23.41 2.56 27.80 22.67 2.83 25.95 21.86 3.15 23.97 20.96 3.51

36.13 19.76 2.11 34.40 19.10 2.34 32.60 18.43 2.58 30.70 17.73 2.86 28.69 16.98 3.17 26.51 16.17 3.53

EWB

(13.9)

_F(_C)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( ---17.8) 10 ( ---12.2) 20 ( ---6.7) 30 ( ---1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ Tot a l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ Tot a l Integ To t a l Integ

875 8.58 7.89 1.91 11.60 10.67 1.98 14.83 13.61 2.04 18.37 16.66 2.12 22.35 19.58 2.21 26.08 26.08 2.29 30.29 30.29 2.39 35.28 35.28 2.52

875 8.06 7.42 1.98 11.12 10.23 2.06 14.37 13.19 2.13 17.90 16.23 2.21 22.07 19.33 2.31 25.74 25.74 2.40 29.87 29.87 2.50 34.73 34.73 2.64

CFM

1000 8.75 8.05 1.92 11.81 10.87 1.99 15.07 13.83 2.05 18.71 16.97 2.11 22.60 19.80 2.19 26.39 26.39 2.26 30.70 30.70 2.35 35.83 35.83 2.47

1125 8.92 8.20 1.95 11.99 11.04 2.00 15.28 14.02 2.06 19.32 17.52 2.12 22.81 19.98 2.18 26.65 26.65 2.24 31.04 31.04 2.32 36.29 36.29 2.43

875 7.50 6.90 2.06 10.60 9.76 2.15 13.88 12.74 2.22 17.41 15.79 2.31 21.72 19.03 2.42 25.38 25.38 2.51 29.46 29.46 2.62 34.18 34.18 2.75

1000 8.24 7.58 2.00 11.33 10.42 2.07 14.62 13.42 2.14 18.19 16.49 2.20 22.30 19.54 2.29 26.03 26.03 2.36 30.27 30.27 2.46 35.27 35.27 2.58

1125 8.40 7.73 2.02 11.51 10.59 2.09 14.83 13.61 2.15 18.43 16.71 2.21 22.51 19.72 2.28 26.29 26.29 2.35 30.57 30.57 2.43 35.70 35.70 2.54

1000 7.68 7.06 2.08 10.81 9.95 2.16 14.13 12.97 2.23 17.69 16.05 2.30 21.99 19.27 2.40 25.68 25.68 2.48 29.83 29.83 2.57 34.70 34.70 2.69

1125 7.84 7.21 2.11 11.00 10.12 2.18 14.34 13.16 2.24 17.94 16.27 2.30 22.21 19.46 2.39 25.93 25.93 2.46 30.13 30.13 2.54 35.14 35.14 2.66

PERFORMANCE DATA (CONT)

30 Cooling Extended Performance Table

EVAPORATOR AIR

CFM /

0.13

875 /

0.17

1000 /

0.21

1125 /

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

30 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

INDOOR AIR

(_C)

EDB

Page 13

Sys

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Sys

Tot a l

Sys KW

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens

33.59 33.59 2.41 32.25 32.25 2.67 30.82 30.82 2.96 29.24 29.24 3.28 27.50 27.50 3.66 25.58 25.58 4.08

34.77 30.70 2.42 33.10 29.87 2.67 31.33 28.94 2.96 29.46 27.90 3.29 27.56 27.56 3.66 25.62 25.62 4.08

35.34 25.01 2.42 33.64 24.23 2.68 31.81 23.40 2.96 29.83 22.52 3.29 27.67 21.55 3.66 25.33 20.50 4.08

38.13 26.06 2.44 36.31 25.28 2.70 34.33 24.46 2.99 32.20 23.57 3.31 29.86 22.59 3.68 27.36 21.54 4.10

41.96 21.04 2.47 39.94 20.31 2.74 37.75 19.54 3.03 35.39 18.70 3.35 32.82 17.81 3.71 30.05 16.85 4.12

35.11 35.11 2.47 33.69 33.69 2.73 32.14 32.14 3.02 30.45 30.45 3.34 28.57 28.57 3.71 26.49 26.49 4.14

35.71 33.01 2.47 33.97 32.07 2.73 32.20 32.20 3.02 30.50 30.50 3.34 28.61 28.61 3.71 26.53 26.53 4.14

36.21 26.69 2.47 34.40 25.89 2.73 32.47 25.03 3.02 30.40 24.10 3.34 28.14 23.09 3.71 25.72 21.97 4.13

38.99 27.86 2.50 37.07 27.06 2.76 35.00 26.20 3.04 32.76 25.27 3.37 30.32 24.25 3.73 27.71 23.14 4.15

42.86 22.23 2.53 40.74 21.48 2.79 38.42 20.68 3.08 35.93 19.82 3.40 33.26 18.85 3.76 30.40 17.82 4.17

36.41 36.41 2.52 34.89 34.89 2.78 33.23 33.23 3.07 31.42 31.42 3.40 29.41 29.41 3.77 27.22 27.22 4.19

36.54 36.49 2.53 34.95 34.95 2.79 33.28 33.28 3.07 31.47 31.47 3.40 29.45 29.45 3.77 27.25 27.25 4.19

36.85 28.29 2.53 34.96 27.46 2.78 32.97 26.58 3.07 30.82 25.61 3.39 28.48 24.53 3.76 26.00 23.34 4.18

39.63 29.59 2.55 37.64 28.75 2.81 35.49 27.86 3.10 33.16 26.89 3.42 30.65 25.82 3.78 27.98 24.63 4.20

43.50 23.36 2.58 41.27 22.59 2.85 38.89 21.74 3.13 36.32 20.81 3.45 33.56 19.82 3.82 30.62 18.76 4.22

EWB

(13.9)

_F(_C)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( ---17.8) 10 ( ---12.2) 20 ( ---6.7) 30 ( ---1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ Tot a l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ Tot a l Integ To t a l Integ

CFM

1050 12.15 11.18 2.30 15.31 14.08 2.39 19.19 17.61 2.49 22.68 20.57 2.58 26.68 23.38 2.68 31.28 31.28 2.80 36.70 36.70 2.96 42.99 42.99 3.16

1200 12.38 11.39 2.32 15.57 14.32 2.40 19.41 17.82 2.50 22.96 20.82 2.58 27.01 23.66 2.67 31.68 31.68 2.78 37.20 37.20 2.94 43.06 43.06 3.12

1350 12.59 11.58 2.35 15.79 14.53 2.43 19.62 18.01 2.52 23.19 21.03 2.59 27.29 23.91 2.67 32.01 32.01 2.78 37.51 37.51 2.93 42.82 42.82 3.10701050 11.71 10.77 2.41 14.88 13.69 2.50 18.76 17.22 2.61 22.39 20.31 2.70 26.32 23.06 2.80 30.81 30.81 2.93 36.14 36.14 3.09 42.42 42.42 3.31

1200 11.94 10.99 2.44 15.13 13.93 2.52 19.13 17.55 2.62 22.65 20.54 2.70 26.63 23.34 2.79 31.21 31.21 2.91 36.62 36.62 3.06 42.62 42.62 3.25

1350 12.15 11.18 2.47 15.37 14.14 2.54 19.35 17.76 2.64 22.88 20.75 2.71 26.91 23.58 2.80 31.54 31.54 2.91 37.00 37.00 3.06 42.49 42.49 3.24751050 11.23 10.33 2.53 14.42 13.27 2.62 18.01 16.53 2.72 22.09 20.03 2.84 25.96 22.75 2.94 30.36 30.36 3.06 35.58 35.58 3.23 41.77 41.77 3.46

1200 11.46 10.55 2.56 14.68 13.51 2.64 18.31 16.81 2.73 22.36 20.27 2.83 26.27 23.02 2.92 30.74 30.74 3.04 36.04 36.04 3.19 42.15 42.15 3.40

1350 11.67 10.74 2.59 14.91 13.72 2.67 18.61 17.08 2.75 22.59 20.48 2.84 26.53 23.24 2.93 31.07 31.07 3.03 36.43 36.43 3.19 42.11 42.11 3.38

PERFORMANCE DATA (CONT)

36 Cooling Extended Performance Table

EVAPORATOR AIR

CFM /

0.12

1050 /

0.18

1200 /

0.24

1350 /

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

36 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

INDOOR AIR

EDB

(_C)

Page 14

Sys

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Tot a l

Sys KW

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

Capacity MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens To t a l Sens To t a l Sens

38.29 38.29 2.70 36.78 36.78 3.00 35.17 35.17 3.35 33.43 33.43 3.76 31.55 31.55 4.23 29.53 29.53 4.78

39.60 35.26 2.71 37.74 34.27 3.01 35.79 33.19 3.36 33.74 32.00 3.76 31.62 31.62 4.24 29.58 29.58 4.78

40.17 28.70 2.72 38.23 27.80 3.02 36.20 26.84 3.37 34.04 25.81 3.77 31.75 24.73 4.24 29.30 23.57 4.77

43.43 29.99 2.76 41.34 29.07 3.07 39.13 28.10 3.42 36.80 27.07 3.83 34.33 25.98 4.30 31.69 24.82 4.85

47.71 24.52 2.83 45.36 23.64 3.14 42.91 22.69 3.50 40.34 21.70 3.91 37.63 20.65 4.40 34.75 19.54 4.95

40.11 40.11 2.76 38.48 38.48 3.06 36.73 36.73 3.42 34.85 34.85 3.83 32.83 32.83 4.31 30.65 30.65 4.86

40.77 37.93 2.77 38.83 36.81 3.07 36.82 36.82 3.42 34.91 34.91 3.83 32.88 32.88 4.31 30.69 30.69 4.86

41.23 30.65 2.77 39.19 29.70 3.07 37.04 28.70 3.42 34.77 27.63 3.83 32.38 26.48 4.29 29.83 25.25 4.83

44.54 32.09 2.82 42.33 31.12 3.12 40.00 30.10 3.48 37.55 29.02 3.89 34.97 27.89 4.37 32.23 26.64 4.91

48.87 25.87 2.89 46.39 24.92 3.20 43.82 23.93 3.56 41.13 22.89 3.98 38.30 21.80 4.46 35.30 20.64 5.02

41.67 41.67 2.82 39.92 39.92 3.13 38.04 38.04 3.48 36.04 36.04 3.90 33.89 33.89 4.38 31.57 31.57 4.93

41.78 41.78 2.82 40.00 40.00 3.13 38.10 38.10 3.49 36.09 36.09 3.90 33.94 33.94 4.38 31.61 31.61 4.94

42.07 32.53 2.83 39.93 31.53 3.13 37.70 30.48 3.48 35.35 29.35 3.88 32.87 28.13 4.35 30.26 26.81 4.89

45.42 34.11 2.87 43.10 33.11 3.18 40.66 32.04 3.53 38.14 30.89 3.95 35.47 29.68 4.43 32.65 28.36 4.97

49.79 27.12 2.95 47.20 26.14 3.26 44.53 25.11 3.62 41.74 24.03 4.04 38.81 22.90 4.53 35.71 21.70 5.08

EWB

(13.9)

_F(_C)

63*

(16.7)

(19.4)

(17.2)

(13.9)

63*

(16.7)

(19.4)

(17.2)

(13.9)

63*

(16.7)

(19.4)

(17.2)

(13.9)

MBtuh

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( ---17.8) 10 ( ---12.2) 20 ( ---6.7) 30 ( ---1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ Tot a l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ Tot a l Integ To t a l Integ

EVAPORATOR AIR

PERFORMANCE DATA (CONT)

42 Cooling Extended Performance Table

CFM / BF

1225 / 0.14

1400 / 0.17

1575 / 0.19

CFM

1225 13.54 12.46 2.47 17.47 16.08 2.63 21.96 20.15 2.78 25.98 23.56 2.88 30.54 26.76 2.98 35.78 35.78 3.11 42.01 42.01 3.30 48.77 48.77 3.53

1400 13.72 12.62 2.48 17.68 16.26 2.64 22.14 20.32 2.77 26.21 23.77 2.86 30.85 27.03 2.95 36.18 36.18 3.07 42.43 42.43 3.24 48.15 48.15 3.46

1575 13.88 12.77 2.50 17.85 16.43 2.65 22.30 20.47 2.78 26.41 23.95 2.86 31.10 27.25 2.95 36.50 36.50 3.07 42.12 42.12 3.22 47.19 47.19 3.42701225 13.21 12.15 2.61 17.11 15.75 2.77 21.74 19.96 2.92 25.70 23.30 3.02 30.15 26.42 3.12 35.27 35.27 3.25 41.37 41.37 3.44 48.32 48.32 3.70

1400 13.40 12.33 2.62 17.33 15.95 2.78 21.94 20.14 2.91 25.93 23.52 3.00 30.45 26.68 3.10 35.67 35.67 3.22 41.86 41.86 3.40 47.84 47.84 3.62

1575 13.57 12.48 2.64 17.52 16.12 2.79 22.13 20.31 2.92 26.14 23.71 3.00 30.72 26.91 3.09 35.97 35.97 3.21 41.84 41.84 3.37 47.03 47.03 3.59751225 12.79 11.77 2.75 16.70 15.37 2.91 21.03 19.31 3.05 25.41 23.05 3.17 29.76 26.07 3.27 34.76 34.76 3.41 40.75 40.75 3.61 47.80 47.80 3.89

1400 12.99 11.95 2.76 16.93 15.58 2.92 21.59 19.82 3.05 25.64 23.25 3.15 30.06 26.34 3.24 35.15 35.15 3.37 41.24 41.24 3.56 47.49 47.49 3.80

1575 13.17 12.12 2.79 17.13 15.76 2.93 21.86 20.07 3.06 25.85 23.44 3.15 30.31 26.56 3.23 35.46 35.46 3.35 41.48 41.48 3.53 46.79 46.79 3.76

INDOOR AIR

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

42 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

EDB

(_C)

Page 15

Sys

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Sys

Tot a l

Sys KW

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens

45.56 45.56 3.20 43.64 43.64 3.58 41.62 41.62 3.98 39.47 39.47 4.41 37.15 37.15 4.90 34.64 34.64 5.46

47.12 41.32 3.21 44.75 40.06 3.59 42.33 38.74 3.99 39.81 37.27 4.42 37.23 37.23 4.91 34.69 34.69 5.46

47.82 33.66 3.21 45.36 32.52 3.59 42.84 31.34 3.99 40.19 30.11 4.42 37.38 28.81 4.91 34.39 27.41 5.46

51.57 35.10 3.22 48.88 33.93 3.62 46.13 32.74 4.02 43.25 31.49 4.46 40.21 30.17 4.95 36.94 28.75 5.49

56.55 28.57 3.23 53.52 27.50 3.64 50.45 26.34 4.06 47.26 25.12 4.51 43.85 23.83 4.99 40.27 22.48 5.53

47.60 47.60 3.26 45.50 45.50 3.65 43.31 43.31 4.05 40.98 40.98 4.49 38.48 38.48 4.98 35.76 35.76 5.53

48.40 44.34 3.26 45.91 42.93 3.65 43.41 43.41 4.05 41.04 41.04 4.49 38.53 38.53 4.98 35.81 35.81 5.53

48.97 35.87 3.27 46.36 34.67 3.65 43.69 33.44 4.05 40.92 32.15 4.49 37.98 30.76 4.97 34.88 29.27 5.52

52.75 37.49 3.27 49.90 36.26 3.68 47.00 35.00 4.09 43.98 33.69 4.52 40.79 32.28 5.01 37.41 30.77 5.55

57.75 30.14 3.28 54.58 28.93 3.70 51.36 27.71 4.13 48.01 26.44 4.57 44.45 25.09 5.06 40.74 23.69 5.59

49.32 49.32 3.32 47.06 47.06 3.71 44.71 44.71 4.12 42.23 42.23 4.56 39.55 39.55 5.05 36.65 36.65 5.59

49.55 49.16 3.32 47.14 47.14 3.71 44.77 44.77 4.12 42.28 42.28 4.56 39.60 39.60 5.05 36.70 36.70 5.59

49.85 38.00 3.32 47.12 36.74 3.71 44.35 35.44 4.11 41.47 34.07 4.55 38.44 32.60 5.03 35.24 30.98 5.57

53.64 39.78 3.32 50.67 38.49 3.73 47.66 37.17 4.15 44.52 35.78 4.59 41.22 34.28 5.07 37.75 32.65 5.60

58.69 31.53 3.33 55.39 30.29 3.76 52.04 29.02 4.18 48.54 27.70 4.63 44.88 26.31 5.12 41.06 24.85 5.65

EWB

(13.9)

_F(_C)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( - -- 17.8) 10 (--- 12.2) 20 (---6.7) 30 (---1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ To t a l Integ Tot a l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ

CFM

1400 15.76 14.50 2.95 20.36 18.74 3.07 25.22 23.15 3.20 31.05 28.16 3.36 36.22 31.73 3.50 41.94 41.94 3.65 48.55 48.55 3.83 56.41 56.41 4.05

1600 16.01 14.73 2.98 20.64 18.99 3.09 25.55 23.46 3.21 31.36 28.44 3.35 36.59 32.06 3.48 42.42 42.42 3.61 49.17 49.17 3.77 57.12 57.12 3.95

1800 16.24 14.94 3.02 20.90 19.23 3.12 25.85 23.73 3.23 31.63 28.69 3.37 36.92 32.35 3.48 42.84 42.84 3.60 49.72 49.72 3.74 57.48 57.48 3.90

1400 15.26 14.04 3.08 19.85 18.27 3.20 24.68 22.65 3.33 30.13 27.32 3.48 35.80 31.37 3.65 41.40 41.40 3.81 47.87 47.87 4.00 55.58 55.58 4.24

1600 15.52 14.28 3.11 20.14 18.53 3.22 25.04 22.98 3.34 30.99 28.11 3.50 36.16 31.68 3.63 41.87 41.87 3.78 48.48 48.48 3.94 56.38 56.38 4.15

1800 15.76 14.50 3.15 20.41 18.78 3.25 25.33 23.25 3.36 31.28 28.37 3.51 36.49 31.97 3.63 42.28 42.28 3.76 49.01 49.01 3.91 56.82 56.82 4.09

1400 14.68 13.51 3.22 19.29 17.74 3.34 24.12 22.14 3.47 29.34 26.61 3.63 35.38 31.00 3.82 40.85 40.85 3.98 47.21 47.21 4.18 54.77 54.77 4.43

1600 14.95 13.76 3.25 19.59 18.03 3.36 24.47 22.46 3.48 29.76 26.99 3.62 35.73 31.31 3.79 41.31 41.31 3.94 47.80 47.80 4.12 55.56 55.56 4.35

1800 15.19 13.98 3.29 19.85 18.27 3.39 24.78 22.74 3.51 30.19 27.38 3.63 36.07 31.60 3.79 41.72 41.72 3.93 48.30 48.30 4.09 56.12 56.12 4.28

PERFORMANCE DATA (CONT)

48 Cooling Extended Performance Table

EVAPORATOR AIR

CFM /

0.15

1400 /

0.18

1600 /

0.21

1800 /

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

48 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

INDOOR AIR

EDB

(_C)

(18.3)

(21.1)

(23.9)

Page 16

Sys

Tot a l

Sys KW

Tot a l

MBtuh

Capacity

Capacity MBtuh

Tot a l

Sys KW

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

50EZ -- A

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

Capacity MBtuh

Tot a l

Sys KW

Tot a l

Sys KW

MBtuh

CONDEN SER ENTERING AIR TEMPERATURES _F(_C)

Capacity MBtuh

Tot a l

Sys KW

Capacity MBtuh

Tot a l

Sys KW

75 (23.9) 85 (29.4) 95 (35) 105 (40.5) 115 (46.1) 125 (51.7)

Capacity MBtuh

Tot a l Sens Tot a l Sens Tot a l Sens Tot a l Sens To t a l Sens To t a l Sens

56.42 56.42 3.97 54.09 54.09 4.39 51.60 51.60 4.86 48.89 48.89 5.40 45.87 45.87 6.01 42.60 42.60 6.70

58.00 51.82 3.99 55.15 50.34 4.40 52.19 48.67 4.87 49.10 48.72 5.40 45.94 45.94 6.01 42.66 42.66 6.70

58.78 42.05 4.00 55.87 40.69 4.41 52.77 39.25 4.88 49.45 37.72 5.41 45.84 36.06 6.01 42.01 34.26 6.69

63.34 43.86 4.05 60.17 42.48 4.47 56.78 41.02 4.94 53.14 39.45 5.46 49.23 37.77 6.06 45.09 35.96 6.74

69.39 35.42 4.13 65.81 34.15 4.55 62.02 32.72 5.02 57.99 31.19 5.54 53.69 29.56 6.13 49.14 27.85 6.80

56.94 56.94 3.99 54.57 54.57 4.41 52.03 52.03 4.88 49.27 49.27 5.42 46.23 46.23 6.03 42.88 42.88 6.72

58.33 52.61 4.01 55.44 51.08 4.42 52.47 49.35 4.89 49.36 49.36 5.42 46.30 46.30 6.03 42.94 42.94 6.72

59.07 42.62 4.02 56.12 41.24 4.43 53.00 39.80 4.90 49.63 38.25 5.42 45.98 36.56 6.03 42.13 34.74 6.71

63.63 44.47 4.08 60.42 43.08 4.49 57.00 41.60 4.96 53.31 40.02 5.48 49.37 38.31 6.08 45.20 36.48 6.75

69.68 35.83 4.15 66.07 34.51 4.57 62.25 33.07 5.04 58.17 31.52 5.56 53.84 29.88 6.15 49.25 28.16 6.82

60.87 60.87 4.19 58.14 58.14 4.61 55.23 55.23 5.08 52.05 52.05 5.62 48.61 48.61 6.22 44.88 44.88 6.90

60.95 60.95 4.19 58.23 58.23 4.61 55.31 55.31 5.08 52.12 52.12 5.62 48.67 48.67 6.22 44.93 44.93 6.90

61.07 47.50 4.19 57.83 46.01 4.61 54.45 44.43 5.07 50.81 42.69 5.60 46.95 40.79 6.19 42.89 38.69 6.87

65.61 49.74 4.25 62.14 48.23 4.67 58.42 46.60 5.13 54.47 44.84 5.66 50.28 42.93 6.25 45.90 40.82 6.92

71.73 39.07 4.33 67.82 37.60 4.75 63.70 36.05 5.21 59.34 34.41 5.74 54.72 32.67 6.32 49.88 30.83 6.98

EWB

(13.9)

_F(_C)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

63*

(16.7)

(17.2)

(19.4)

(13.9)

Capacity

OUTDOOR COIL ENTERING AIR TEMPERATURES _F(_C)

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

MBtuh

Capacity

Sys

Tot a l

---10 ( - -- 23.3) 0 ( ---17.8) 10 ( ---12.2) 20 (---6.7) 30 (--- 1.1) 40 (4.4) 50 (10) 60 (15.6) MBtuh

Capacity

Tot a l Integ Tota l Integ Tota l Integ Tota l Integ To t a l Integ To t a l Integ To t a l Integ To t a l Integ

CFM

1750 19.26 17.72 3.62 24.88 22.89 3.77 30.79 28.26 3.91 37.20 33.74 4.06 44.98 39.41 4.26 51.96 51.96 4.43 60.02 60.02 4.64 69.62 69.62 4.91

1800 19.34 17.79 3.63 24.98 22.98 3.78 30.90 28.37 3.92 37.33 33.85 4.07 45.09 39.50 4.26 52.09 52.09 4.42 60.19 60.19 4.62 69.84 69.84 4.89

2250 20.06 18.45 3.75 25.74 23.69 3.88 31.75 29.14 4.00 38.31 34.75 4.12 45.93 40.25 4.28 53.12 53.12 4.41 61.48 61.48 4.58 71.51 71.51 4.81701750 18.37 16.90 3.77 24.01 22.09 3.92 30.00 27.54 4.08 36.36 32.98 4.24 44.47 38.96 4.46 51.32 51.32 4.63 59.22 59.22 4.85 68.63 68.63 5.12

1800 18.45 16.97 3.78 24.11 22.18 3.93 30.11 27.64 4.09 36.49 33.09 4.24 44.58 39.06 4.45 51.43 51.43 4.63 59.39 59.39 4.83 68.85 68.85 5.10

2250 19.15 17.62 3.90 24.92 22.93 4.04 30.96 28.41 4.17 37.44 33.95 4.30 45.42 39.80 4.47 52.45 52.45 4.61 60.65 60.65 4.79 70.47 70.47 5.02751750 17.44 16.04 3.93 23.12 21.27 4.09 29.18 26.78 4.26 35.57 32.26 4.43 43.08 37.74 4.63 50.66 50.66 4.85 58.44 58.44 5.07 67.67 67.67 5.35

1800 17.52 16.12 3.94 23.22 21.36 4.10 29.28 26.88 4.27 35.70 32.37 4.43 43.34 37.97 4.64 50.78 50.78 4.84 58.60 58.60 5.05 67.87 67.87 5.33

2250 18.19 16.73 4.06 23.99 22.07 4.21 30.13 27.65 4.35 36.62 33.21 4.48 44.87 39.31 4.68 51.79 51.79 4.82 59.83 59.83 5.00 69.45 69.45 5.24

PERFORMANCE DATA (CONT)

60 Cooling Extended Performance Table

EVAPORATOR AIR

CFM /

0.19

1750 /

0.20

1850 /

0.27

2250 /

*At 75_F (23.9 _C) entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80_F (26.7 _C) entering dry bulb. See Legend and Notes.

60 Heating Extended Performance Table --10--60 (--23.3--15.6_C)

INDOOR AIR

EDB

(_C)

Page 17

50EZ -- A

4.5 x cfm

total capacity (Btuh)

e w b ---

lwb =

(Btuh)

1.10 x cfm

Sensible capacity

---

Wet---bulb temperature corresponding to enthalpy

edb

ldb =

LEGEND

BF — Bypass Factor

e d b — E n t e r i n g D r y --- B u l b

Ewb — Entering Wet---Bulb

kW — Total Unit Power Input

SHC — Sensible Heat Capacity (1000 Btuh)

TC — Total Capacity (1000 Btuh) (net)

rh —Relative Humidity

COOLING NOTES:

1. Ratings are net; they account for the effects of the evaporator---fan motor power and heat.

2. Direct interpolation is permissible. Do not extrapolate.

3. The following formulas may be used:

lwb =

lwb)

ewb = Enthalpy of air entering evaporator coil

air leaving evaporator coil (

4. Th e SHC is based on 80_F (26.7 _C) edb temperature of air entering evaporator coil. Below 80_F (26.7_C) edb, subtract (corr factor x cfm) from SHC. Above 80_F (26.7_C) edb, add (corr factor x cfm) to SHC.

Where:

Correction Factor = 1.10 x (1 + BF) x (edb + 80).

5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.

Correction Factor = 1.10 x (1 + BF) x (edb + 80).

5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.

Page 18

PERFORMANCE DATA (CONT)

Wet Coil Air Delivery (CFM)-- Downflow -- High Speed with 1--in. (25 mm) Filter and Economizer

UNIT SIZE

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 36 1333 1289 1256 1214 1152 1118 1076 1035 997 950 42 1612 1569 1527 1481 1451 1393 1351 1317 1278 1242 48 2166 2085 2002 1919 1798 1709 1582 1467 1270 988 60 2298 2239 2180 2110 2044 1951 1862 1777 1697 1591

Economizer 1--in. Filter Pressure Drop (in. wc)

UNIT50EZ -- A PRESSURE DROP

24--36 0.20 42--60 0.25

Multiplication Factors

HEATER kW RATING VOLTAGE DISTRIBUTION MUL TIPLICATION FACTOR

50EZ -- A

Electric Heat Pressure Drop Table (in. W.C.)

240

480

Small Cabinet: 24--36 cfm

HEATER

CAPACITY

5kw 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07

7.5 kw 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03 0.05 0.07 0.08 0.09 10 kw 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 0.09 0.10 0.11 15 kw 0.00 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 20 kw 0.00 0.00 0.02 0.04 0.06 0.08 0.09 0.11 0.13 0.15 0.17 0.19

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600

EXTERNAL STATIC PRESSURE (in. W.C.)

200 208 230 240 460

STANDARD C FM (S.C.F.M)

0.69

0.75

0.92

1.00

0.92

Large Cabinet 042--060 cfm

HEATER

CAPACITY

5kw 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12

7.5 kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 10 kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 15 kw 0.00 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 20 kw 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16

1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

STANDARD C FM (S.C.F.M)

50EZ--A Horizontal Wet Coil Pressure Drop (in. W.C.)

UNIT SIZE

24 0.06 0.07 0.08 0.09 0.1 30 0.12 0.15 0.19 0.23 0.27 36 0.07 0.11 0.18 0.26 0.35 42 0.04 0.07 0.1 0.15 0.21 48 0.11 0.14 0.17 0.22 0.28 60 0.1 0.17 0.23 0.31 0.36

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

STANDARD C FM (S.C.F.M)

Horizontal Filter Pressure Drop Table (IN. W.C.)

FILTER SIZE

in. (mm)

20X20X1

(508X508X25)

20X24X1

(508X610x25)

24X30X1

(610X762x25)

24X36X1

(610X914X25)

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300

0.05 0.07 0.08 0.1 0.12 0.13 0.14 0.15 — — — — — — — — — — —

— — — .09 .10 .11 .13 .14 .15 .16 — — — — — — — — —

— — — 0.04 0.05 0.06 0.07 0.07 0.08 0.09 0.1 — — — — — — — —

— — — — — — — 0.06 0.07 0.07 0.08 0.09 0.09 0.10 0.11 0.12 0.13 0.14 0.14

STANDARD CFM (S.C.F.M)

Page 19

Dry Coil Air Delivery* -- Horizontal and Downflow Discharge -- Unit 50EZ--A24--60

UNIT

50EZ---A24

50EZ---A30

50EZ---A36

50EZ---A42

50EZ---A48

50EZ---A60

* Air delivery values are without air filter and are for dry coil (See 50EZ - -- A Horizontal Wet Coil Pressure Drop Table).

Factory--- shipped cooling speed

NOTE: For horizontal applications deduct field - -- supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting. For downflow applications see Wet Coil Air Delivery T able for available static in cluding wet coil, 1---in. (25 mm) filter and economizer.

Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed.

MOTOR

SPEED

Low Blue CFM 754 650 538 429 --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

M e d --- L o w Pink CFM 851 777 675 591 475 --- --- --- --- --- --- --- --- --- --- --- ---

Medium

M e d --- H i g h Orange CFM 1009 917 840 759 667 577 447 --- --- --- --- --- ---

High Black CFM 1241 1167 1111 1036 969 881 818 731 640

Low Blue CFM 741 638 547 415 --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---

M e d --- L o w Pink CFM 973 887 823 733 665 538 451 --- --- --- --- --- ---

Medium Red CFM 1088 1023 954 881 800 723 658 563 461

M e d --- H i g h

M e d --- L o w Pink CFM 1290 1223 1154 1090 1027 977 894 828 762

M e d --- H i g h Orange CFM 1606 1546 1489 1430 1371 1316 1258 1208 1140

M e d --- L o w Pink CFM 1345 1282 1235 1194 1140 1095 1027 974 921

M e d --- H i g h

M e d --- L o w Pink CFM 1457 1404 1367 1318 1284 1233 1197 1144 1104

M e d --- H i g h Orange CFM 2149 2111 2062 2026 1980 1945 1905 1864 1793

M e d --- L o w Pink CFM 1678 1635 1602 1558 1513 1474 1438 1404 1349

M e d --- H i g h Orange CFM 2131 2088 2065 2013 1982 1941 1888 1860 1785

High Black CFM 1202 1140 1082 1015 961 881 810 732 631

Low Blue CFM 1234 1168 1093 1021 961 894 825 759 687

Medium

High Black CFM 1630 1580 1517 1463 1407 1339 1277 1210 1131

Low Blue CFM 1295 1234 1182 1126 1075 1016 955 898 857

Medium Red CFM 1505 1452 1413 1358 1323 1282 1234 1169 1130

High Black CFM 1705 1643 1607 1568 1518 1483 1448 1404 1360

Low Blue CFM 1402 1351 1311 1263 1224 1172 1136 1080 1041

Medium

High Black CFM 2344 2306 2259 2203 2141 2070 1991 1902 1803

Low Blue CFM 1445 1389 1341 1281 1236 1189 1139 1072 1027

Medium

High Black CFM 2461 2409 2339 2286 2192 2140 2062 1968 1874

WIRE

COLOR

Red CFM 941 851 774 684 576 479 --- --- --- --- --- --- --- --- ---

Orange CFM 1140 1064 996 915 840 758 687 564 480

Red CFM 1354 1290 1226 1158 1102 1046 981 918 843

Orange CFM 1545 1492 1449 1411 1362 1313 1278 1231 1188

Red CFM 1736 1695 1642 1601 1553 1512 1465 1427 1381

Red CFM 1927 1893 1858 1824 1791 1759 1720 1689 1640

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

EXTERNAL STATIC PRESSURE (in. W.C.)

50EZ -- A

Page 20

TYPICAL PIPING AND WIRING

ROOF-MOUNTING CURB

SUPPLY-AIR FLEXIBLE DUCT

50EZ -- A

ROOF

RETURN-AIR FLEXIBLE DUCT

CONCENTRIC DIFFUSER BOX (FIELD-SUPPLIED)

TOP COVER

CEILING

A09230

INDOOR THERMOSTAT

RETURN AIR

FROM POWER SOURCE

DISCONNECT PER NEC

POWER ENTRY

CONTROL ENTRY

A09240

Page 21

APPLICATION DATA

Condensate trap — A 2-- in. (51 mm) condensate trap must be

field supplied. Ductwork — Secure downflow discharge ductwork to roof curb.

For horizontal discharge applications, attach ductwork to unit with flanges.

To convert a unit to downflow discharge — Units are equipped with factory--installed inserts in the downflow openings. Removal of the inserts is similar to removing an electrical knock -- out. Units installed in horizontal discharge orientation do not require duct covers.

BALANCE POINT WORKSHEET

Maximum cooling airflow — To minimize the possibility of condensate blow--off from the evaporator, airflow through the units should not exceed 450 cfm per ton.

Minimum cooling airflow — Minimum cooling airflow is 350 cfm per ton in cooling mode. Airlow can be lower in certain modes when humidity removal is an issue.

Minimum ambient cooling operation temperature —All standard units have a minimum ambient cooling operating temperature of 40_F(4.4_C). With accessory low ambient temperature kit, units can operate at temperatures down to 0_F (17.8_C).

Maximum operating outdoor air temperature for cooling is 125_F (51.7_C).

HEATING CAPACITY, MBTUH

BUILDING HEAT LOSS, UNIT INTEGRATED

BASED ON INDOOR ENT. AIR AT 70 ºF AND AT RATED CFM

-20-100 10203040506070

OUTDOOR TEMPERATURE, ºF

50EZ -- A

A09269

Page 22

ELECTRICAL DATA

VOLTAGE

UNIT

50EZ-A24---30-- 208/230-1-60 197 253 13.5 58.3 20.0 1.2 4.1

50EZ-A30---30-- 208/230-1-60 197 253 16 73 22.0 1.2 4.1

50EZ-A30---50-- 208/230-3-60 197 253 10.9 58 13.9 1.2 4.1

50EZ-A36---30-- 208/230-1-60 197 253 19.3

50EZ -- A

50EZ-A36---50-- 208/230-3-60 197 253 13 73 16.3 1.2 6.0

50EZ-A36---60-- 460-3-60 414 506 6 38 9.0 0.5 3.0

50EZ-A42---30-- 208/230-1-60 197 253 20.9 112 28.0 1.2 6.0

50EZ-A42---50-- 208/230-3-60 197 253 13.5 88 21.1 1.2 6.0

50EZ-A42---60-- 460-3-60 414 506 6.2 44 9.3 0.5 3.0

50EZ-A48---30-- 208/230-1-60 197 253 23.5 117 34.0 1.2 7.6

50EZ-A48---50-- 208/230-3-60 197 253 14.8 83.1 21.4 1.2 7.6

50EZ-A48---60-- 460-3-60 414 506 6.5 41 9.7 0.5 3.8

NOMINAL

V-P H -HZ

RANGE

MIN MAX RLA LRA MCC FLA FLA

COMPRESSOR OFM IFM ELECTRIC HEAT POWER SUPPLY

26.0 1.2 6.0

NOMINAL

-/- -/- 22.2 30

3.8/5 18.1/20.8 44.8/ 48.2 45/50

5.4/7.2 25.9/30 54.6/ 59.7 60/60

7.5/10 36.1/41.7 67.3/74.3 70/80

-/- -/- 25.3 40

3.8/5 18.1/20.8 47.9/ 51.3 50/60

5.4/7.2 25.9/30 57.7/ 62.8 60/70

7.5/10 36.1/41.7 70.4/77.4 80/80

11.3/15 54.2/62.5 93.1/103.4 100/110

-/- -/- 18.9 25

3.8/5 10.4/12 31.9/33.9 35/35

7.5/10 20.8/24.1 44.9/49.1 45/50

11.3/15 31.2/36.1 57.9/64.1 60/70

-/- -/- 31.3 45

3.8/5 18.1/20.8 54/ 57.3 60/60

5.4/7.2 25.9/30 63.7/ 68.8 70/70

7.5/10 36.1/41.7 76.5/83.5 80/90

11.3/15 54.2/62.5 99.1/109.5 100/110

-/- -/- 23.5 30

3.8/5 10.4/12 36.5/38.5 40/40

7.5/10 20.8/24.1 49.5/53.6 50/60

11.3/15 31.2/36.1 62.5/68.6 70/70

-/- -/- 11 15

3.8/5 6 18.5/ 18.5 20

7.5/10 12 26/26 30

11.3/15 18 33.5/33.5 35

-/- -/- 33.3 50

3.8/5 18.1/20.8 56/ 59.3 60/60

5.4/7.2 25.9/30 65.7/ 70.8 70/80

7.5/10 36.1/41.7 78.5/85.5 80/90

11.3/15 54.2/62.5 101.1/111.5 110/125 15/20 72.2/83.3 123.6/137.5 125/150

-/- -/- 24.1 35

3.8/5 10.4/12 37.1/39.1 40/40

7.5/10 20.8/24.1 50.1/54.2 60/60

11.3/15 31.2/36.1 63.1/69.2 70/70 15/20 41.4/47.9 75.8/84 80/90

-/- -/- 11.3 15

3.8/5 6 18.8/ 18.8 20

7.5/10 12 26.3/26.3 30

11.3/15 18 33.8/33.8 35 15/20 24.1 41.4/41.4 45

-/- -/- 38.2 50

3.8/5 18.1/20.8 60.8/ 64.2 70/70

5.4/7.2 25.9/30 70.6/ 75.7 80/80

7.5/10 36.1/41.7 83.3/90.3 90/100

11.3/15 54.2/62.5 105.9/116.3 110/125 15/20 72.2/83.3 128.4/142.3 150/150

-/- -/- 27.3 40

3.8/5 10.4/12 40.3/42.3 45/45

7.5/10 20.8/24.1 53.3/57.4 60/60

11.3/15 31.2/36.1 66.3/72.4 70/80

15/19.91 41.4/47.9 79.1/87.2 80/ 90

-/- -/- 12.4 15

3.8/5 6 19.9/ 19.9 20

7.5/10 12 27.4/27.4 30

11.3/15 18 34.9/34.9 35 15/20 24.1 42.6/42.6 45

FLA MCA MOCP

Page 23

ELECTRICAL DATA (CONT)

VOLTAGE

UNIT

50EZ-A60---30-- 208/230-1-60 197 253 27.4 134 41.2 1.2 7.6

50EZ-A60---50-- 208/230-3-60 197 253 18.4 110 24.9 1.2 7.6

50EZ-A60---60-- 460-3-60 414 506 8 52 12.1 0.5 3.8

See Legend and Notes below.

NOMINAL

V-P H -HZ

RANGE

MIN MAX RLA LRA MCC FLA FLA

COMPRESSOR OFM IFM ELECTRIC HEAT POWER SUPPLY

NOMINAL

-/- -/- 43.1 60

3.8/5 18.1/20.8 65.7/ 69.1 70/70

5.4/7.2 25.9/30 75.4/ 80.6 80/90

7.5/10 36.1/41.7 88.2/95.2 90/100

11.3/15 54.2/62.5 110.8/121.2 125/125 15/20 72.2/83.3 133.3/147.2 150/150

-/- -/- 31.8 45

3.8/5 10.4/12 44.8/46.8 45/50

7.5/10 20.8/24.1 57.8/61.9 60/70

11.3/15 31.2/36.1 70.8/76.9 80/80

15/19.91 41.4/47.9 83.6/91.7 90/100

-/- -/- 14.3 20

3.8/5 6 21.8/ 21.8 25

7.5/10 12 29.3/29.3 30

11.3/15 18 36.8/36.8 40 15/20 24.1 44.4/44.4 45

FLA MCA MOCP

50EZ -- A

A06564

Page 24

TYPICAL WIRING SCHEMATIC -- 208/230--1--60

50EZ -- A

A09301

Page 25

TYPICAL WIRING SCHEMATIC -- 208/230--3--60

50EZ -- A

A09302

Page 26

TYPICAL WIRING SCHEMATIC -- 460--3--60

50EZ -- A

‘

A09303

Page 27

CONTROLS

Operating sequence

When power is supplied to unit, the transformer (TRAN) is energized.

On units with crankcase heater, heater is also energized.

Cooling — With the thermostat in the cooling position, the thermostat makes circuit “R” to “O”. This energizes the reversing valve solenoid (RVS) and places the unit in standby condition for cooling.

As the space temperature rises, the thermostat closes circuit “R” to “Y”. A circuit is made to contactor (C), starting the compressor (COMP) and outdoor--fan motor (OFM). Circuit “R” to “G” is made at the same time and starts the indoor--fan motor (IFM).

When the thermostat is satisfied, contacts open, deenergizing C. The COMP and OFM stop, and the IFM stops after the preselected time delay.

On the loss of the thermostat call for cooling, 24 V is removed from both the “Y1/Y” and “G” terminals (provided the fan switch is in the “AUTO” position) de--energizing the compressor contactor and opening the contacts supplying power to compressor/OFM. After a 90--second delay, the IFM shuts off. If the thermostat fan selector switch is in the “ON” position, the IFM will run continuously.

Heating — On a call for heat, thermostat makes circuites “R” to “Y) and “R” to “G”.

A circuit is made to C, starting COMP and OFM. Circuit “R” to “G” also is complted, energizing IFR and starting IFM after the selected time delay.

Should room temperature continue to fall, circuit “R” to “W” is made through second--stage thermostat. 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.

Defrost — Defrost board (DB) is a time and temperature control, which includes a field --selectable time period (dip switch 1 and 2 on the board) between checks for defrost (30, 60, 90, or 120 minutes). Electronic timer and defrost cycle start only when contactor is energized and defrost thermostat (DFT) is closed.

The defrost board is also equipped with a third dip switch for selecting Quiet Shift operation. The Quiet Shift operation turns compressor off at defrost initiation and termination. Unit is factory shipped with quiet shift turned off.

Defrost mode is identical to cooling mode, except outdoor fan motor stops and a bank of optional electric heat turns on to warm air supplying the conditioned space.

NOTE:

1. Compressor time delay occurs through the defrost control board.

2. Defrost control board has built in 5 minute compressor delay; once the compressor has started and then stopped, it cannot be restarted again until 5 minutes have elapsed.

50EZ -- A

Page 28

GUIDE SPECIFICATIONS

Packaged Heat Pumps

HVAC Guide Specifications

Size Range: 2to5Tons,NominalCooling

Carrier Model Number: 50EZ--A

Part 1⎯General

SYSTEM DESCRIPTION

Outdoor, packaged,air--to--air heat pump unitutilizing a hermetic scroll compressor for cooling duty and optional electric heating. Unit shall discharge supply airvertically or horizontallyasshown on contract drawings. Outdoor fan/coil section shall have a draw--thru design with vertical discharge for minimum sound levels.

QUALITY ASSURANCE

A. Unit shall be rated in accordance with ARI Standards 210/240

and 270.

B. Unit shall be designed in accordance with UL Standard

1995.

C. Unit shall be manufactured in a facility registered to ISO 9001

50EZ -- A

manufacturing quality standard.

D. Unit shall be UL listed and c--UL certified as a total package

for safety requirements.

E. Roof curb shall be designed to conform to NRCA Standards.

F. Insulation and adhesives shall meet NFPA 90A requirements

for flame spread and smoke generation.

G. Cabinet insulation shall meet ASHRAE Standard 62P.

DELIVERY, STORAGE AND HANDLING

Unit shall be stored and handled per manufacturer’s recommendations.

Part 2 ⎯ Products

EQUIPMENT

A. General:

Factory--assembled, single--piece, heat pump unit. Contained within the enclosure shall be all factory wiring, piping, controls, refrigerant charge (R--22), and special features required prior to field start--up.

B. Unit Cabinet:

1. Unit cabinet shall be constructed of phosphated, zinc--coated, pre--painted steel capable of withstanding 500 hours of salt spray.

2. Normal service shall be through a single removable cabinet panel.

3. The unit shall be constructed on a rust proof unit base that has an externally trapped, integrated sloped drain.

4. Indoor fan compartment top surface shall be insulated with a minimum 1/2--in. (12.7 mm) thick, flexible fiberglass insulation, coated on the air side and retained by adhesive and mechanical means. The indoor wall sections will be insulated with a minimum semi--rigid, foil-- faced board capable of being wiped clean. Aluminum foil--faced fiberglass insulation shall be used in the entire indoor air cavity section.

5. Unit shall have a field--supplied condensate trap.

6. Metal Insulated Duct Covers for side discharge will be standard on all sizes.

7. Unit insulation conforms to ASHRAE 62P.

C. Fans:

1. The indoor fan shall be 5--speed, direct--drive, as shown on equipment drawings.

2. Fan wheel shall be made from steel and shall be double--inlet type with forward--curved blades with corrosion resistant finish. Fan wheel shall be dynamically balanced.

3. Outdoor fan shall be direct--drive, propeller--type with aluminum blades riveted to corrosion resistant steel spiders, be dynamically balanced, and discharge air vertically.

D. Compressor:

1. Fully hermetic compressors with factory--installed vibration isolation.

2. Scroll compressors shall be standard on all units.

3. Compressor Protection: Defrost control shall protect compressor by preventing “short cycling.”

E. Coils:

Indoor and outdoor coils shall have aluminum plate fins mechanically bonded to seamless copper tubes with all joints brazed. (Copper/copper and vinyl--coated construction available as option.) Tube sheet openings shall be belled to prevent tube wear.

F. Refrigerant Metering Device:

Refrigerant metering device shall be thermostatic expansion valve for cooling, and fixed orifice for heating.

G. Filters:

Filter section shall consist of field --installed, throwaway, 1--in. (25 mm) -- thick fiberglass filters of commercially available sizes.

H. Controls and Safeties:

1. Unit controls shall be complete with a self--contained, low-voltage control circuit.

2. Units shall incorporate an internal compressor protector that provides reset capability.

I. Operating Characteristics:

1. Unit shall be capable of starting and running at 125_F (51.7_C) ambient outdoor temperature.

2. Compressor with standard controls shall be capable of operation down to 40_F(4.4_C) ambient outdoor temperature in cooling mode.

3. Unit shall be provided with 60--second fan time delay after the thermostat is satisfied.

J. Electrical Requirements:

All unit power wiring shall enter the unit cabinet at a single location.

K. 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. Condenser fan motor shall be totally enclosed.

4. Evaporator Fan Motor to be high--efficiency brushless DC motor.

5. Condenser fan motor shall be totally enclosed.

Page 29

GUIDE SPECIFICATI ONS (CONT)

L. Special Features Available:

1. Coil Options: Base unit with tin plated indoor coil hairpins.

2. Compressor Start Kit (single phase units only Shall provide additional starting torque for single--phase compressors.

3. Thermostat: To provide for two--stage heating and one--stage cooling in addition manual or automatic changeover and indoor fan control.

4. Crankcase Heater: Shall provide anti--floodback protection for lowload cooling applications.

5. 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. wc pressure differential.

c. Spring return motor shuts off outdoor damper on power

failure.

6. 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.

7. Filter Rack Kit: Shall provide filter mounting for downflow applications.

8. Flat Roof Curb: Curbs shall have seal strip and a wood nailer for flashing and shall be installed per manufacturer’s instructions.

9. 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 (--17.7_C) outdoor ambient temperature.

10. Louvered Grille: Wire grille shall be standard on all units. Louvered grille shall be available as a field--installed option to provide hail guard and vandalism protection.

11. Manual Outdoor Air Damper: Package shall consist of damper, birdscreen, and rainhood which can be preset to admit outdoor air for year--round ventilation.

12. Square--To--Round Duct Transitions (24--48 size): Shall have the ability to convert the supply and return openings from rectangular to round.

13. Time Guard II 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 or with a RTU--MP control.

50EZ -- A

Page 30

50EZ -- A

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No:50EZ---03PD

Replaces: 50EZ ---02PD

Carrier Comfort 50EZ-A, Comfort 50EZ-A24, Comfort 50EZ-A30, Comfort 50EZ-A36, Comfort 50EZ-A42 Product Data

Specifications and Main Features

Frequently Asked Questions

User Manual