Product Data - County Heating & Air Conditioning Inc

50XT---A
Infinity® 15 SEER Single---Packaged Heat Pump System
with Puron® (R---410A) Refrigerant
Single Phase
2---5 Nominal Tons (Sizes 24---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.
Variable--speed blower motors provide better comfort and energy
efficiency. Economical constant airflow which provides improved
indoor air quality and more even temperatures from room to room;
and reduced indoor noise due to lower air velocity. In addition,
you’ll realize improved installation flexibility with 3 different
airflow choices for best overall comfort.
Easy installation
Factory--assembled package is a compact, fully self--contained heat
pump unit that is pre--wired, pre--piped, and pre--charged for
minimum installation expense. 50XT--A units are available in a
variety of standard capacity ranges. Units install easily on a rooftop
or at ground level.
Durable, dependable components
A09032
Fig. 1 -- Unit 50XT--A
Single--Packaged Products with energy--saving features and
Puron® refrigerant.
S Up to 15.5 SEER
S Up to 8.0 HSPF
S Up to 12 EER at 95°F (35°C) OD
S Low Sound Levels
S Full featured ECM Motor
S Factory--Installed TXV
S Two--stage cooling and heat pump operation
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 15.5, EER up to 12.0, HSPF of up to 8.0.
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.
Comfort Heat Pump System with IdealHumidityt featuring
Infinity control variable--speed blower motor and two--stage
cooling and heating that provides greater comfort, humidity
control, and energy efficiency.
Compressors have two stages of cooling and heating and are
designed for high efficiency. Each compressor is hermetically
sealed against contamination to help promote longer life and
dependable operation. Vibration isolation provides quiet operation.
Compressors have internal high--pressure and overcurrent
protection.
Convertible duct configuration
Unit is designed for use in either downflow or horizontal
applications. Each unit is converted from horizontal to downflow
and includes 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.
Full featured ECM Motor is standard on all 50XT models.
Direct--drive, PSC (Permanent Split Capacitor) condenser fan
motors are designed to help reduce energy consumption and
provide for cooling operation down to 55°F (12.7°C) outdoor
temperature. Low--ambient cooling is available below 55°F
(12.7°C) when low--ambient cooling is enabled in the User
Interface (UI). Motormaster® II low--ambient kit is not required.
Infinity User Interface is designed to work as a system with
Carrier’s single--packaged product.
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 Puron refrigerant
charge. Refrigerant service connections make checking operating
pressures easier.
1
50XT-- A
Indoor and outdoor coils are computer designed for optimum
heat transfer and cooling 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.
Thermostatic expansion valve (TXV) —A hard--shutoff, balance
port TXV maintains a constant superheat at the evaporator exit
(cooling cycle) resulting in higher overall system efficiency.
High-- and low--pressure switches give added safety and
reliability to the compressor.
Low sound ratings ensure a quiet indoor and outdoor
environment with sound ratings as low as 75 dBA.
Easy to service cabinets provide easy 3 panel accessibility to
serviceable components during maintenance and installation. The
basepan, 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.
Louvered grille provides hail and vandalism protection for the
coil.
Cabinets are constructed of heavy--duty, phosphated, zinc--coated,
pre--painted steel capable of withstanding 500 hrs of salt spray.
Interior surfaces of the evaporator and electric heater compartments
are insulated with cleanable, semi--rigid insulation 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 unit, which is provided with an external
drain.
Short--cycling protection for the compressor is incorporated into
our Infinity heat pump/air conditioner dual capacity control board
ensuring a five--minute delay before restarting compressor after
shutdown for any reason.
TABLE OF CONTENTS
FEATURES/BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1--2
MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AHRI CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPTIONS AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5--6
BASE UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7--8
ACCESSORY DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SELECTION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PERFORMANCE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11--30
TYPICAL PIPING AND WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
TYPICAL WIRING SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36--37
2
MODEL NUMBER NOMENCLATURE
---
50XT
A
24
--- --- ---
3
--- ---
0
Type of Unit
50XT --- Single Packaged
Heat Pump
System
Options
TP --- Base unit with tin plated indoor coil hairpins
N/A
See Price Page for full list of factory options.
Only used if ordering an option
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
50XT-- A
Minor Series
Electrical Supply
3 --- 208/230--- 1--- 60
N/A
AHRI* CAPACITIES
Cooling Capacities and Efficiencies
UNIT
50XT-- A
NOMINAL
TONS
24
30
36
42
48
60
2
2--1/2
3
3--1/2
4
5
STANDARD CFM (High/Low
Stage)
(Cooling & Heating)
800 / 600
1000 / 700
1200 / 850
1400 / 975
1600 / 1100
1750 / 1200
NET COOLING CAPACITIES (Btuh)
(High/Low Stage)
22,600 /
28,600 /
34,600 /
40,500 /
46,000 /
57,000 /
17,600
21,400
24,400
29,000
33,400
40,500
EER @A{
SEER‡
11.4
11.6
12
11.6
11
11
15.5
15.0
15.0
15.0
15.0
14.5
Heating Capacities and Efficiencies
UNIT
50XT-- A
24
30
36
42
48
60
HIGH HEAT CAPACITY
(BTUH) @ 47°F (8.3°C)
(High/Low Stage)
20,800 / 16,800
27,600 / 20,400
33,600 / 23,000
39,500 / 27,600
45,500 / 32,200
56,000 / 39,500
HIGH HEAT COP
@ 47°F (8.3°C)
(High/Low Stage)
3.3 / 3.2
3.5 / 3.5
3.4 / 3.4
3.6 / 3.5
3.3 / 3.5
3.2 / 3.3
LOW HEAT CAPACITY
(BTUH) @ 17°F (-- 8.3°C)
(High/Low Stage)
11,600 / 8,400
14,000 / 9,600
17,200 / 11,200
20,600 / 14,200
25,000 / 15,200
30,800 / 20,400
{ ”A” conditions---80°F (26.6°C) indoor db/67°F (19.4°C) indoor wb & 95°F (35°C) outdoor db.
LOW HEAT COP
@ 17°F (-- 8.3°C)
(High/Low Stage)
2.2 / 1.8
2.1 / 1.9
2.4 / 1.7
2.3 / 2.0
2.4 / 1.9
2.2 / 1.9
HSPF‡
} Rated in accordance with U.S. Government DOE (Department of Energy) test procedures and/or AHRI Standards 210/240.
** Tested in accordance with AHRI Standard 270 (not listed in ARI).
NOTES:
1. Ratings are net values, reflecting the effects of circulating fan heat. Ratings are based on:
Cooling Standard: 80°F (26.6°C) db, 67°F (19.4°C) wb indoor entering ---air temperature and 95°F (35°C) db outdoor entering---air temperature.
2. Before purchasing this appliance, read important energy cost and efficiency information available from your retailer.
LEGEND
dBA—Sound Levels (decibels)
db—Dry Bulb
SEER—Seasonal Energy Efficiency Ratio
wb—Wet Bulb
COP—Coefficient of Performance
HSPF—Heating Season Performance Factor
3
8.0
8.0
8.0
8.0
8.0
8.0
50XT-- A
PHYSICAL DATA
UNIT SIZE
NOMINAL CAPACITY ton
SHIPPING WEIGHT (lb)
(kg)
COMPRESSOR
REFRIGERANT (R--410A) Quantity (lb)
(kg)
EXPANSION DEVICE--HEATING
ORIFICE OD (in.) -- Left
ORIFICE OD (in.) -- Right
EXPANSION DEVICE--COOLING
Size
OUTDOOR COIL
Rows…Fins/in.
Face Area (sq. ft.)
OUTDOOR FAN
Nominal Cfm
Diameter
Motor HP (RPM)
INDOOR COIL
Rows…Fins/in.
Face Area (sq. ft.)
INDOOR FAN
Nominal Airflow (Cfm)
Comfort
Efficiency
Max
Size in.
(mm)
Motor HP (RPM)
HIGH--PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
HIGH--PRESSURE SWITCH 2 (psig)
(Compressor Solenoid)
Cutout
Reset (Auto)
LOSS--OF--CHARGE/LOW--PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
Reset (Auto)
RETURN--AIR FILTERS Throwaway in.*
(mm)
24
2
435
197
30
2--1/2
465
211
10.3
(4.7)
11.5
(5.2)
0.042
N/A
0.038
0.038
2 Ton
3 Ton
36
42
3
3--1/2
501
513
227
233
Two--Stage Scroll
9.7
14.0
(4.4)
(6.4)
AccuRater
0.035
0.040
0.035
0.040
TXV
3 Ton
4 Ton
48
4
529
240
60
5
572
259
15.5
(7.0)
16.0
(7.3)
0.038
0.046
0.046
0.046
4 Ton
5 Ton
2…21
13.6
2…21
15.3
2…21
17.5
2…21
19.4
2…21
19.4
2…21
23.3
2700
22
1/8 (825)
2700
22
1/8 (825)
2800
22
1/8 (825)
2800
22
1/8 (825)
3300
22
1/4 (1100)
3300
22
1/3 (1110)
3…17
3.7
3…17
3.7
3…17
4.7
3…17
4.7
3…17
5.7
4…17
5.7
Variable based on Comfort Settings (see User Interface instructions for more information).
700
875
1050
1225
1400
1750
800
1000
1200
1400
1600
2000
10x10
10x10
11x10
11x10
11x10
11x10
(254x254)
(254x254)
(279x254)
(279x254)
(279x254)
(279x254)
1/2
1/2
3/4
3/4
3/4
1
670 ± 10
470 ± 25
565 ± 15
455 ± 15
23 ± 5
55 ± 5
20x24x1
(508x610x25)
24x30x1
(610x762x25)
24x36x1
610x914x25)
*Recommended filter sizes for field---installed air filter grilles mounted on the wall or ceiling of the conditioned structure. Required filter sizes shown are based on
the larger of the AHRI (Air Conditioning, Heating and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft (91.4 mm) /minute for
throwaway type or 450 (137 mm) ft/minute for high ---capacity type. Air filter pressure drop for non ---standard filters must not exceed 0.08 in. wc.
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)
MODEL 50XT-- A
24
30
36
42
48
60
STANDARD
RATING
(dBA)
75
75
75
75
78
78
TYPICAL OCTAVE BAND SPECTRUM (dBA) (without tone adjustment)
125
250
500
1000
2000
4000
8000
58.8
58.8
60.7
56.7
62.4
63.5
63.5
63.5
63.3
62.8
69.9
67.6
67.2
67.2
66.8
67.8
71.3
71.8
66.9
66.9
66.5
67.4
73.4
75.5
63.7
63.7
64.2
63.7
70.0
71.0
58.3
58.3
60.3
57.7
66.3
68.1
50.0
50.0
53.0
50.8
60.1
59.9
NOTE: Tested in accordance with AHRI Standard 270 (not listed in AHRI).
4
OPTIONS AND ACCESSORIES
DESCRIPTION
Coil Options
Base unit with tin plated indoor coil hairpins
Thermostats provide control for the system heating and
cooling functions.
Crankcase Heater provides anti--- floodback protection for
low--- load cooling applications.
Electric Heat Supplement
Filter Rack features easy installation, serviceability, and
high--- filtering performance for vertical applications.
Includes 1--- in. filter.
Flat Roof Curbs in both 11--- in (279 mm) and 14--- in. (356
mm) sizes are available for roof mounted applications.
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.
Allows you to power the electric heater and unit contactor
separately by having two individual field power supply
circuits connected respectively.
Corporate Thermostats
Crankcase Heater
Electric Heaters
Filter Rack
Flat Roof Curbs
Manual Outside Air Damper
Square--- to--- Round Duct Transition Kit
Dual Point Electric Heaters
FACTORY
INSTALLED
OPTION
X
FIELD
INSTALLED
ACCESSORY
X
X*
X
X
X
X
X
50XT-- A
ITEM
X
*Refer to price page for application detail.
Electric Heaters
NOMINAL
CAPACITY
(kW)
FUSED
STAGES
CPHEATER080A00
3.8 / 5.0
NO
1
X
CPHEATER081A00
3.8 / 5.0
YES
1
CPHEATER083A00
5.4 / 7.2
YES
2
CPHEATER085A00
7.5 / 10.0
YES
2
CPHEATER087A00
11.3 / 15.0
YES
2
CPHEATER089A00
15.0 / 20.0
YES
2
CATALOG
ORDERING NO.
USED WITH SIZES
24
30
36
42
48
60
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
208/240 — SINGLE PHASE (60 Hz)
NOTE
Electric heaters are rated at 240v. Refer to Multiplication Factors table for other voltages.
X=Approved combination
FILTER RACK
MANUAL OUTSIDE AIR DAMPER
FILTER RACK
MANUAL OUTSIDE AIR DAMPER
BEND FLANGE AT 90° -SCREW TO
DIVIDER WITH 1-IN. SCREW
REPLACEMENT
PANEL
TOP FILTER RACK
MANUAL OUTSIDE
AIR HOOD
EV APORATOR
COIL
DAMPER
BLADE
A09235
BOTTOM FILTER
RACK
A09236
5
50XT-- A
50XT--A24--30 UNIT DIMENSIONS
A09128
6
50XT-- A
50XT--A36--60 UNIT DIMENSIONS
A09129
7
ROOF CURB DIMENSIONS
HVAC unit
base rails
B
HVAC unit
basepan
Dashed lines show cross support
location for large basepan units.
C
Sealing
Gasket
F
Roofcurb
Anchor screw
Wood nailer*
A
Flashing field
supplied
Roofcurb*
Insulation
(field supplied)
Roofing material
field supplied
50XT-- A
Cant strip
field supplied
E
D
COMMON CURB
A09096
*Provided with roofcurb
A09090
ROOF CURB DETAIL
B
C
SUPPLY
AIR
SMALL
BASE
UNIT
RETURN
AIR
LARGE
BASE
UNIT
F
A
E
D
UNIT PLACEMENT ON
COMMON CURB
LARGE CURB
A09094
SMALL OR LARGE BASE UNIT
A09095
A09097
UNIT SIZE
Small or
Large
Large
CATALOG
NUMBER
CPRFCURB010A00
CPRFCURB011A00
CPRFCURB012A00
CPRFCURB013A00
A
IN. (mm)
11 (279)
14 (356)
11 (279)
14 (356)
B (small base)
IN. (mm)*
B (large base)
IN. (mm)*
C
IN. (mm)
D
IN. (mm)
14 (356)
16 (406)
47.8 (1214)
10 (254)
E
IN. (mm)
F
IN. (mm)
32.4 (822)
14 (356)
2.7 (69)
43.9 (1116)
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 mm) thick fiberglass 1 lb. density.
8
SELECTION PROCEDURE
Given:
REQUIRED COOLING CAPACITY (TC) . . . . . . 34,500 BTUH
SENSIBLE HEAT CAPACITY (SHC) . . . . . . . . . 24,000 BTUH
REQUIRED HEATING CAPACITY (SHC) . . . . . 36,000 BTUH
CONDENSER ENTERING AIR TEMPERATURE 95°F (35°C)
INDOOR--AIR TEMPERATURE . . . 80°F (26.6°C) EDB, 67°F
(19.4°C) EWB
EVAPORATOR AIR QUANTITY . . . . . . . . . . . . . . . 1200 CFM
ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . 230--1--60
Select unit based on required cooling capacity
Enter Net Cooling Capacities table at condenser entering
temperature of 95°F (35°C). The 36 unit at 1200 CFM and 67°F
(19.4°C) ewb (entering wet bulb) will provide a total capacity of
34,600 Btuh and a SHC of 24,220 Btuh. Calculate SHC correction,
if required, using Note 4 under Cooling Capacities tables.
Select electric heat
Enter the 36 unit Heating Extended Performance table at 1200
CFM. At 70°F (21.1°C) return indoor air and 20°F (--6.6°C) air
entering outdoor coil, the integrated heating capacity is 16,810
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 36,000 Btuh. Therefore, at least
19,190 Btuh additional electric heat is required.
Determine additional electric heat capacity in kW.
19,190 Btuh
3414 Btuh/kW
= 5.6kW of heat required
Enter the Electric Heater table on page 5 for 208/230v,
single--phase, unit. The 7.2--kW heater at 240v most closely
satisfies the heating required. To calculate kW at 230v, multiply the
heater kW by multiplication factor 0.92 found in the Multiplication
Factors table on page 29.
7.2 kW x 0.92 = 6.6 kW
6.6 kW x 3414 Btuh/kW = 22,532 Btuh
Total unit heating capacity is 39,342 Btuh
(16,810 + 22,532).
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.
9
50XT-- A
Determine cooling and heating requirements at design
conditions
10
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
1.70
15.18
15.72
12.75
22.76
20.16
16.20
16.81
13.43
22.85
24.66
27.16
22.76
22.97
23.39
25.22
27.77
1.67
18.69
22.40
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
1.11
11.75
12.26
10.05
17.52
15.66
12.58
13.14
10.61
17.61
19.23
21.48
17.52
17.71
18.10
19.75
22.06
1.09
14.47
17.20
1.08
1.08
1.08
1.09
1.08
1.06
1.06
16.65
16.65
1.05
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
600
525
CFM
EWB
_F (_C)
EVAPORATOR
AIR
1.64
1.64
1.64
1.67
1.64
1.62
1.61
21.77
21.77
1.61
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A24 Low Cool
800
700
CFM
EWB
_F (_C)
EVAPORATOR
AIR
Cooling Extended Performance Table
50XT-- A24 High Cool
12.96
16.32
15.71
21.76
21.81
12.28
15.24
14.70
18.21
20.88
1.88
1.85
1.83
1.82
1.82
1.86
1.83
1.80
1.80
1.79
20.93
18.71
17.12
16.78
16.77
20.41
18.23
16.69
16.29
15.95
10.21
12.74
12.18
16.75
16.77
9.66
11.87
11.36
14.07
15.95
1.26
1.24
1.23
1.23
1.23
1.24
1.22
1.21
1.21
1.20
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
26.37
23.94
22.19
21.84
21.81
25.83
23.44
21.71
21.29
20.88
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
12.48
15.82
15.21
20.81
20.81
11.80
14.75
14.21
17.70
19.95
2.09
2.05
2.03
2.03
2.03
2.06
2.03
2.01
2.00
2.00
23.35
21.18
19.62
19.74
19.74
22.94
20.79
19.25
18.95
18.94
11.95
15.30
14.69
19.74
19.74
11.29
14.24
13.70
18.95
18.94
2.31
2.28
2.26
2.26
2.26
2.29
2.26
2.23
2.23
2.23
19.72
17.60
16.09
15.96
15.96
19.26
17.18
15.70
15.34
15.21
9.80
12.32
11.76
15.96
15.96
9.26
11.47
10.96
13.65
15.21
1.43
1.41
1.39
1.39
1.39
1.41
1.39
1.38
1.37
1.37
18.41
16.41
14.98
15.10
15.10
18.02
16.05
14.64
14.40
14.40
9.36
11.88
11.32
15.10
15.10
8.84
11.03
10.53
14.40
14.40
1.62
1.60
1.59
1.59
1.59
1.60
1.58
1.57
1.57
1.57
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
24.90
22.60
20.94
20.81
20.81
24.42
22.15
20.52
20.13
19.95
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
11.41
14.74
14.14
18.58
18.58
10.76
13.70
13.16
17.86
17.86
2.57
2.53
2.51
2.51
2.51
2.54
2.51
2.48
2.48
2.48
17.03
15.14
13.80
14.15
14.15
16.69
14.83
13.50
13.52
13.52
8.91
11.41
10.85
14.15
14.15
8.39
10.58
10.07
13.52
13.52
1.85
1.83
1.81
1.82
1.82
1.83
1.81
1.80
1.80
1.80
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
21.66
19.67
18.22
18.58
18.58
21.33
19.34
17.90
17.86
17.86
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
11.05
14.14
13.54
17.29
17.29
10.18
13.12
12.58
16.66
16.66
2.57
2.82
2.79
2.80
2.80
2.83
2.79
2.77
2.77
2.77
15.51
13.76
12.51
13.12
13.11
15.24
13.50
12.27
12.55
12.55
8.41
10.91
10.35
13.12
13.11
7.90
10.09
9.58
12.55
12.55
2.11
2.09
2.08
2.09
2.09
2.09
2.07
2.06
2.07
2.07
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
20.60
18.01
16.69
17.29
17.29
19.57
17.74
16.42
16.66
16.66
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
11
700
800
700
800
700
800
CFM
4.21
4.24
3.97
4.02
3.77
3.82
700
800
700
800
700
800
CFM
16.65
16.84
16.03
16.25
14.91
15.10
14.60
14.76
14.05
14.24
13.06
13.23
1.58
1.53
1.62
1.68
1.89
1.84
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.12
1.11
1.25
1.24
1.38
1.38
5.89
5.95
5.63
5.71
5.36
5.43
1.21
1.20
1.35
1.34
1.49
1.48
9.38
9.46
9.01
9.12
8.62
8.74
8.61
8.69
8.27
8.37
7.91
8.02
1.32
1.31
1.46
1.45
1.61
1.59
11.90
11.94
11.51
11.60
11.03
11.17
10.85
10.89
10.49
10.58
10.06
10.19
19.30
19.36
18.69
18.95
17.97
18.27
19.30
19.36
18.69
18.95
17.97
18.27
1.69
1.61
1.86
1.79
2.03
1.96
21.15
21.27
20.68
20.80
20.04
20.30
21.15
21.27
20.68
20.80
20.04
20.30
1.75
1.66
1.95
1.85
2.14
2.05
22.00
22.16
21.51
21.65
20.96
21.13
22.00
22.16
21.51
21.65
20.96
21.13
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
6.40
6.47
6.12
6.20
5.83
5.91
50XT-- A
1.78
1.70
1.98
1.87
2.20
2.08
Total
System
KW
1.42
1.43
1.55
1.55
1.70
1.69
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
3.88
3.90
3.65
3.70
3.47
3.51
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A24 High Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A24 High
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
12.90
12.94
11.21
11.30
10.75
10.88
1.45
1.44
1.49
1.66
1.75
1.72
25.14
25.40
24.54
24.82
23.91
24.20
25.14
25.40
24.54
24.82
23.91
24.20
1.92
1.82
2.11
2.00
2.32
2.21
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
14.22
14.27
12.36
12.46
11.85
12.00
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
12
525
600
525
600
525
600
CFM
2.95
2.99
2.81
2.87
2.61
2.66
525
600
525
600
525
600
CFM
12.17
12.37
11.60
11.80
11.00
11.21
10.66
10.84
10.17
10.34
9.64
9.83
1.30
1.27
1.46
1.43
1.64
1.61
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.05
1.04
1.22
1.21
1.37
1.36
4.50
4.58
4.34
4.41
4.09
4.16
1.11
1.09
1.29
1.28
1.46
1.44
7.22
7.31
6.73
6.87
6.26
6.38
6.63
6.71
6.18
6.30
5.75
5.86
1.18
1.17
1.35
1.34
1.52
1.51
8.74
8.89
8.26
8.40
7.78
7.92
7.97
8.11
7.53
7.66
7.10
7.22
15.20
15.22
14.55
14.80
13.91
14.16
15.20
15.22
14.55
14.80
13.91
14.16
1.37
1.33
1.54
1.50
1.72
1.68
17.28
16.79
16.84
16.80
16.15
16.40
17.28
16.79
16.84
16.80
16.15
16.40
1.41
1.37
1.61
1.54
1.79
1.74
18.16
16.85
17.86
17.64
17.17
17.36
18.16
16.85
17.86
17.64
17.17
17.36
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
4.89
4.97
4.72
4.80
4.45
4.53
1.44
1.36
1.64
1.57
1.83
1.77
Total
System
KW
1.22
1.20
1.38
1.37
1.56
1.54
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
2.72
2.75
2.59
2.64
2.41
2.46
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A24 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A24 Low
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
8.60
8.74
8.14
8.28
7.68
7.80
1.24
1.22
1.40
1.38
1.57
1.56
19.43
16.78
20.96
18.39
20.53
20.33
19.43
16.78
20.96
18.39
20.53
20.33
1.44
1.29
1.71
1.53
1.91
1.85
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
9.48
9.64
8.97
9.13
8.46
8.60
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
13
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
27.90
23.85
19.34
19.99
16.13
29.10
25.68
20.61
21.34
16.96
27.90
28.72
29.28
31.48
34.49
29.10
29.40
29.91
32.13
35.18
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
1.36
14.40
14.96
12.26
21.32
19.04
15.36
15.98
12.91
21.55
23.40
25.95
21.32
21.67
22.13
24.00
26.61
1.34
17.65
21.08
1.32
1.31
1.31
1.35
1.32
1.30
1.30
20.32
20.32
1.29
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
700
615
CFM
EWB
_F (_C)
EVAPORATOR
AIR
2.18
2.14
2.10
2.10
2.09
2.14
2.10
2.07
2.06
2.05
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT--A30 Low Cool
1000
875
CFM
EWB
_F (_C)
EVAPORATOR
AIR
16.32
20.69
19.98
27.75
27.84
15.50
19.36
18.72
23.21
26.73
2.40
2.36
2.32
2.32
2.32
2.36
2.32
2.29
2.28
2.27
25.22
22.76
20.98
20.56
20.44
24.65
22.22
20.47
20.01
19.50
12.42
15.50
14.89
18.54
20.44
11.79
14.49
13.94
17.18
19.50
1.55
1.53
1.51
1.50
1.50
1.53
1.51
1.49
1.49
1.48
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
33.29
30.42
28.33
27.90
27.84
32.69
29.85
27.78
27.25
26.73
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
Cooling Extended Performance Table
50XT--A30 High Cool
15.65
20.02
19.31
26.48
26.48
14.85
18.70
18.07
22.53
25.47
2.65
2.60
2.57
2.56
2.56
2.61
2.56
2.53
2.52
2.52
29.11
26.64
24.86
25.00
25.00
28.70
26.23
24.46
24.09
24.09
14.94
19.30
18.60
25.00
25.00
14.15
18.00
17.38
24.09
24.09
2.92
2.87
2.83
2.84
2.84
2.88
2.83
2.80
2.79
2.79
23.71
21.40
19.74
19.46
19.46
23.20
20.93
19.28
18.86
18.60
11.90
14.98
14.38
19.46
19.46
11.28
13.99
13.44
16.67
18.60
1.76
1.74
1.72
1.72
1.72
1.75
1.72
1.70
1.70
1.70
22.06
19.91
18.38
18.38
18.38
21.63
19.51
17.99
17.62
17.60
11.34
14.42
13.83
18.38
18.38
10.73
13.44
12.90
17.58
17.60
2.01
1.99
1.97
1.97
1.97
2.00
1.97
1.95
1.95
1.95
14.18
18.53
17.84
23.34
23.34
13.40
17.25
16.64
22.56
22.56
3.22
3.17
3.13
3.15
3.15
3.18
3.13
3.10
3.10
3.10
20.25
18.29
16.90
17.17
17.17
19.91
17.97
16.58
16.49
16.20
10.74
13.82
13.24
17.17
17.17
10.14
12.85
12.33
16.49
16.20
2.30
2.28
2.26
2.26
2.26
2.28
2.26
2.24
2.24
2.21
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
26.76
24.51
22.90
23.34
23.34
26.43
24.19
22.58
22.56
22.56
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
31.27
28.60
26.66
26.48
26.48
30.77
28.11
26.18
25.70
25.47
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
13.36
16.98
17.00
21.47
21.47
13.36
16.42
15.82
20.81
20.81
3.55
3.51
3.47
3.49
3.49
3.19
3.47
3.43
3.44
3.44
18.28
16.52
15.28
15.82
15.82
18.01
16.26
15.02
15.23
15.23
10.09
13.17
12.60
15.82
15.82
9.51
12.24
11.71
15.23
15.23
2.63
2.61
2.60
2.60
2.60
2.62
2.60
2.58
2.58
2.58
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
24.19
22.47
20.75
21.47
21.47
26.31
21.92
20.50
20.81
20.81
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
14
875
1000
875
1000
875
1000
CFM
7.07
7.16
6.74
6.84
6.31
6.42
875
1000
875
1000
875
1000
CFM
19.48
19.75
18.76
19.03
18.00
18.32
17.07
17.31
16.44
16.67
15.77
16.05
1.91
1.89
2.11
2.08
2.31
2.28
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.56
1.56
1.73
1.73
1.90
1.90
8.60
8.70
8.28
8.39
7.88
8.00
1.64
1.64
1.82
1.82
2.00
2.00
12.08
12.23
11.66
11.80
11.20
11.35
11.09
11.23
10.70
10.83
10.28
10.42
1.72
1.71
1.91
1.90
2.10
2.09
14.34
14.51
13.82
14.00
13.30
13.48
13.07
13.23
12.60
12.76
12.13
12.29
24.32
24.63
23.39
23.75
22.48
22.83
24.32
24.63
23.39
23.75
22.48
22.83
2.04
2.02
2.23
2.20
2.44
2.40
28.09
28.28
27.23
27.60
26.17
26.59
28.09
28.28
27.23
27.60
26.17
26.59
2.08
2.15
2.34
2.31
2.56
2.51
29.61
30.05
29.07
29.24
27.94
28.38
29.61
30.05
29.07
29.24
27.94
28.38
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
9.35
9.46
9.00
9.12
8.56
8.69
2.12
2.19
2.40
2.34
2.62
2.57
Total
System
KW
1.78
1.77
1.97
1.95
2.17
2.15
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
6.51
6.59
6.20
6.29
5.81
5.91
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A30 High Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A30 High
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
13.99
14.16
13.46
13.64
12.95
13.11
1.81
1.79
2.00
1.98
2.20
2.18
35.99
36.32
35.34
35.85
34.42
34.50
35.99
36.32
35.34
35.85
34.42
34.50
2.18
2.32
2.46
2.54
2.70
2.82
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
15.42
15.61
14.85
15.04
14.28
14.46
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
15
615
700
615
700
615
700
CFM
3.77
3.81
3.34
3.42
2.85
2.91
615
700
615
700
615
700
CFM
13.95
14.14
13.39
13.58
12.86
13.03
12.23
12.39
11.73
11.90
11.27
11.42
1.41
1.37
1.61
1.57
1.82
1.78
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.12
1.12
1.29
1.29
1.47
1.47
5.29
5.36
5.00
5.10
4.45
4.54
1.20
1.19
1.38
1.37
1.57
1.56
8.06
8.16
7.66
7.75
7.16
7.27
7.40
7.49
7.03
7.11
6.57
6.67
1.27
1.25
1.46
1.44
1.65
1.63
9.90
10.01
9.47
9.60
8.97
9.10
9.03
9.13
8.64
8.75
8.18
8.30
17.78
18.04
17.11
17.39
16.41
16.66
17.78
18.04
17.11
17.39
16.41
16.66
1.50
1.45
1.70
1.65
1.92
1.86
20.83
21.17
20.08
20.40
19.37
19.66
20.83
21.17
20.08
20.40
19.37
19.66
1.57
1.51
1.78
1.71
2.01
1.93
22.25
22.64
21.45
21.80
20.70
21.02
22.25
22.64
21.45
21.80
20.70
21.02
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
5.75
5.82
5.44
5.55
4.84
4.93
50XT-- A
1.61
1.54
1.81
1.74
2.05
1.96
Total
System
KW
1.32
1.29
1.51
1.48
1.71
1.68
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
3.47
3.51
3.07
3.15
2.62
2.68
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A30 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
50XT--A30 Low
Heating Capacity
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
9.75
9.86
9.35
9.47
8.89
9.02
1.34
1.31
1.53
1.50
1.73
1.70
27.83
28.00
26.70
27.26
25.66
26.16
27.83
28.00
26.70
27.26
25.66
26.16
1.75
1.62
1.96
1.87
2.20
2.09
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
10.75
10.87
10.31
10.45
9.80
9.94
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
16
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
33.64
28.72
23.25
24.04
18.41
35.06
30.91
24.79
25.68
19.31
33.64
34.47
35.12
37.76
42.16
35.06
35.29
35.86
38.52
42.99
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
EWB
_F (_C)
1.53
16.28
16.96
13.86
24.45
21.68
17.42
18.17
14.64
24.46
26.63
29.67
24.45
24.61
25.11
27.33
30.44
1.50
20.06
23.91
1.49
1.48
1.48
1.51
1.48
1.47
1.46
23.27
23.27
1.46
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
850
745
CFM
EVAPORATOR
AIR
2.41
2.36
2.33
2.33
2.32
2.37
2.32
2.29
2.29
2.28
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A36 Low Cool
1200
1050
CFM
EWB
_F (_C)
EVAPORATOR
AIR
50XT-- A36 High Cool
18.61
24.97
24.08
33.64
33.64
17.73
23.34
22.56
28.00
32.32
2.66
2.61
2.58
2.58
2.58
2.62
2.57
2.54
2.54
2.53
28.89
25.92
23.80
23.43
23.43
28.20
25.29
23.21
22.70
22.34
14.12
17.64
16.89
23.43
23.43
13.35
16.45
15.77
19.54
22.34
1.71
1.69
1.68
1.67
1.67
1.70
1.67
1.66
1.65
1.65
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
40.85
36.62
34.09
33.64
33.64
40.12
35.94
33.44
32.83
32.32
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
Cooling Extended Performance Table
17.87
24.22
23.34
32.12
32.12
17.01
22.61
21.83
27.24
30.90
2.93
2.88
2.85
2.85
2.85
2.90
2.84
2.81
2.81
2.81
36.13
32.43
30.23
30.46
30.46
35.58
31.91
29.73
29.36
29.36
17.09
23.43
22.56
30.46
30.46
16.24
21.83
21.07
29.36
29.36
3.24
3.19
3.15
3.16
3.16
3.20
3.15
3.12
3.11
3.11
27.21
24.40
22.39
22.33
22.33
26.61
23.85
21.87
21.41
21.31
13.55
17.08
16.34
22.33
22.33
12.81
15.90
15.23
18.97
21.31
1.93
1.91
1.89
1.89
1.89
1.91
1.89
1.87
1.87
1.87
25.40
22.76
20.88
21.12
21.11
24.89
22.28
20.42
20.19
20.19
12.96
16.48
15.74
21.12
21.11
12.23
15.32
14.65
20.19
20.19
2.17
2.15
2.14
2.14
2.14
2.16
2.14
2.12
2.12
2.12
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
38.57
34.60
32.22
32.12
32.12
37.93
34.00
31.65
31.11
30.90
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
16.25
22.57
21.71
28.63
28.63
15.43
21.00
20.25
27.65
27.65
3.58
3.53
3.49
3.50
3.50
3.54
3.49
3.45
3.46
3.46
23.45
20.99
19.24
19.80
19.80
23.01
20.58
18.85
18.95
18.95
12.33
15.84
15.10
19.80
19.80
11.60
14.69
14.03
18.95
18.95
2.46
2.44
2.43
2.44
2.44
2.45
2.43
2.41
2.41
2.41
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
33.48
30.06
28.05
28.63
28.63
33.02
29.65
27.64
27.65
27.65
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
15.35
21.64
20.78
26.56
26.56
14.53
20.10
19.35
25.71
25.71
3.96
3.90
3.87
3.89
3.89
3.92
3.87
3.83
3.84
3.84
21.30
19.06
17.46
18.32
18.32
20.96
18.72
17.14
17.58
17.58
11.65
15.15
14.42
18.32
18.32
10.93
14.02
13.36
17.58
17.58
2.80
2.78
2.77
2.78
2.78
2.79
2.77
2.75
2.76
2.76
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
30.56
27.47
25.66
26.56
26.56
30.21
27.14
25.33
25.71
25.71
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
17
1050
1200
1050
1200
1050
1200
CFM
8.62
8.70
8.34
8.44
7.96
8.07
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
1050
1200
1050
1200
1050
1200
CFM
INDOOR AIR
1.43
1.43
1.59
1.59
1.74
1.74
23.95
24.20
23.16
23.44
22.38
22.66
20.99
21.21
20.29
20.54
19.61
19.86
2.22
2.20
2.44
2.41
2.67
2.64
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
7.93
8.01
7.68
7.77
7.32
7.43
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A36 High Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A36 High
10.43
10.53
10.14
10.25
9.76
9.88
1.60
1.59
1.77
1.77
1.95
1.94
14.73
14.88
14.26
14.42
13.78
13.93
13.52
13.66
13.09
13.24
12.65
12.79
1.78
1.77
1.97
1.96
2.17
2.15
17.57
17.76
16.99
17.20
16.38
16.59
16.02
16.19
15.49
15.68
14.93
15.12
29.99
30.20
28.99
29.28
28.03
28.36
29.99
30.20
28.99
29.28
28.03
28.36
2.51
2.45
2.73
2.71
2.99
2.94
34.51
34.82
33.82
33.60
32.65
33.00
34.51
34.82
33.82
33.60
32.65
33.00
2.69
2.67
2.98
2.90
3.24
3.21
36.57
36.95
35.98
35.59
34.87
34.97
50XT-- A
36.57
36.95
35.98
35.59
34.87
34.97
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
11.33
11.45
11.02
11.14
10.60
10.74
2.79
2.74
3.08
3.00
3.37
3.29
Total
System
KW
1.92
1.90
2.12
2.10
2.33
2.31
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
17.15
17.33
16.61
16.81
15.99
16.19
1.99
1.97
2.19
2.17
2.40
2.38
43.09
43.39
42.90
43.10
42.66
42.80
43.09
43.39
42.90
43.10
42.66
42.80
3.12
2.88
3.44
3.30
3.75
3.69
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
18.91
19.11
18.32
18.53
17.63
17.86
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
18
745
850
745
850
745
850
CFM
3.84
3.91
3.10
3.23
2.22
2.34
745
850
745
850
745
850
CFM
16.25
16.46
15.55
15.78
14.74
14.98
14.24
14.42
13.62
13.82
12.91
13.13
1.78
1.74
1.99
1.95
2.22
2.18
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.62
1.62
1.82
1.82
2.03
2.04
6.10
6.17
5.41
5.53
4.60
4.71
1.68
1.67
1.89
1.89
2.10
2.11
9.48
9.61
8.83
8.98
8.01
8.17
8.70
8.82
8.10
8.24
7.35
7.49
1.72
1.70
1.93
1.92
2.15
2.14
11.69
11.84
11.03
11.20
10.24
10.42
10.66
10.80
10.06
10.21
9.33
9.50
20.33
20.70
19.45
19.78
18.60
18.90
20.33
20.70
19.45
19.78
18.60
18.90
1.81
1.76
2.02
1.97
2.26
2.20
23.56
23.96
22.61
23.00
21.56
21.95
23.56
23.96
22.61
23.00
21.56
21.95
1.84
1.78
2.05
1.98
2.28
2.21
25.01
25.46
24.02
24.44
22.94
23.44
25.01
25.46
24.02
24.44
22.94
23.44
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
6.63
6.71
5.88
6.01
5.00
5.12
1.85
1.78
2.06
1.99
2.29
2.22
Total
System
KW
1.74
1.71
1.95
1.93
2.18
2.16
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
3.53
3.60
2.86
2.98
2.05
2.16
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A36 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
50XT--A36 Low
Heating Capacity
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
11.51
11.66
10.90
11.07
10.18
10.36
1.75
1.72
1.96
1.94
2.19
2.16
30.27
30.88
29.09
29.68
27.95
28.50
30.27
30.88
29.09
29.68
27.95
28.50
1.90
1.82
2.11
2.02
2.35
2.25
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
12.69
12.85
12.02
12.20
11.23
11.42
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
19
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
2.96
29.94
30.93
24.77
41.96
39.80
31.90
33.01
26.04
42.00
45.04
49.21
41.96
42.17
42.81
45.87
50.09
2.89
37.05
41.24
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
1.91
19.56
20.31
16.51
29.53
25.99
20.89
21.71
17.40
29.61
32.05
35.41
29.53
29.77
30.34
32.81
36.21
1.91
24.09
28.99
1.90
1.90
1.90
1.89
1.89
1.89
1.89
28.20
28.20
1.89
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
975
855
CFM
EWB
_F (_C)
EVAPORATOR
AIR
2.84
2.83
2.82
2.91
2.84
2.78
2.77
40.34
40.34
2.76
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A42 Low Cool
1400
1225
CFM
EWB
_F (_C)
EVAPORATOR
AIR
.50XT-- A42 High Cool
25.02
31.98
30.89
40.04
40.04
23.77
29.93
28.96
36.02
38.56
3.23
3.15
3.10
3.10
3.10
3.17
3.10
3.05
3.04
3.03
34.17
31.00
28.69
28.23
28.23
33.47
30.33
28.04
27.46
27.00
16.72
21.04
20.23
28.23
28.23
15.84
19.65
18.92
23.43
27.00
2.12
2.12
2.12
2.12
2.12
2.10
2.11
2.11
2.11
2.11
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
47.23
43.30
40.45
40.04
40.04
46.48
42.59
39.74
39.06
38.56
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
Cooling Extended Performance Table
23.92
30.88
29.81
37.92
37.92
22.69
28.85
27.90
36.39
36.60
3.51
3.44
3.39
3.39
3.39
3.46
3.39
3.34
3.33
3.32
45.09
38.65
36.05
36.46
36.46
44.33
38.03
35.56
35.21
35.21
24.26
30.16
29.03
36.46
36.46
22.99
28.11
27.16
35.21
35.21
3.58
3.69
3.63
3.64
3.64
3.52
3.63
3.58
3.57
3.58
31.95
29.00
26.88
26.78
26.78
31.36
28.43
26.32
26.46
25.67
16.00
20.30
19.52
26.78
26.78
15.12
18.94
18.23
22.99
25.67
2.35
2.36
2.37
2.36
2.36
2.34
2.35
2.35
2.31
2.35
31.03
28.00
24.87
25.14
25.14
31.76
26.33
24.41
24.16
24.16
15.68
19.93
18.73
25.14
25.14
15.26
18.16
17.47
24.16
24.16
2.58
2.59
2.64
2.64
2.64
2.28
2.62
2.63
2.63
2.63
23.12
28.88
27.35
33.86
33.86
21.88
26.85
25.89
32.79
32.79
3.93
4.03
4.03
4.00
4.00
3.87
3.98
3.92
3.93
3.93
30.23
24.36
22.66
23.27
23.27
26.40
23.99
22.29
22.43
22.43
15.42
18.62
17.88
23.27
23.27
13.49
17.30
16.64
22.43
22.43
2.60
2.93
2.96
2.95
2.95
2.90
2.92
2.95
2.94
2.94
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
41.83
35.36
31.99
33.86
33.86
41.24
34.81
32.52
32.79
32.79
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
44.13
40.50
37.88
37.92
37.92
43.50
39.90
37.29
36.71
36.60
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
20.13
26.96
25.92
29.82
29.82
18.96
25.04
24.13
29.04
29.04
4.51
4.45
4.40
4.43
4.43
4.47
4.40
4.35
4.37
4.37
24.42
21.97
20.20
21.29
21.29
24.07
21.52
19.93
20.48
20.50
13.57
17.76
16.93
21.29
21.29
12.74
16.42
15.73
20.48
20.50
3.26
3.29
3.31
3.29
3.29
3.25
3.28
3.30
3.29
3.29
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
32.98
30.38
28.59
29.82
29.82
32.75
30.12
28.29
29.04
29.04
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
20
1225
1400
1225
1400
1225
1400
CFM
10.65
10.79
10.16
10.32
9.53
9.69
1225
1400
1225
1400
1225
1400
CFM
28.26
28.60
27.38
27.71
26.37
26.72
24.77
25.06
23.99
24.28
23.10
23.41
2.62
2.60
2.87
2.85
3.13
3.11
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
2.06
2.08
2.28
2.29
2.49
2.51
12.87
13.02
12.42
12.57
11.86
12.03
2.19
2.20
2.42
2.42
2.64
2.65
17.85
18.04
17.32
17.52
16.69
16.90
16.39
16.56
15.89
16.08
15.32
15.51
2.32
2.32
2.55
2.55
2.80
2.80
21.02
21.26
20.37
20.60
19.70
19.94
19.17
19.39
18.58
18.78
17.96
18.18
35.01
35.38
33.83
34.27
32.67
33.12
35.01
35.38
33.83
34.27
32.67
33.12
2.81
2.79
3.06
3.03
3.34
3.30
40.36
40.37
39.05
39.50
37.72
38.23
40.36
40.37
39.05
39.50
37.72
38.23
2.97
2.91
3.22
3.20
3.50
3.46
42.96
43.00
41.60
41.96
40.19
40.71
42.96
43.00
41.60
41.96
40.19
40.71
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
13.99
14.15
13.49
13.66
12.89
13.07
3.05
2.96
3.31
3.27
3.59
3.55
Total
System
KW
2.41
2.41
2.66
2.65
2.91
2.90
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
9.80
9.92
9.34
9.49
8.77
8.92
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A42 High Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
50XT--A42 High
Heating Capacity
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
20.43
20.67
19.77
20.01
19.14
19.37
2.46
2.45
2.70
2.69
2.96
2.94
51.37
51.50
50.54
50.80
49.42
49.70
51.37
51.50
50.54
50.80
49.42
49.70
3.25
3.19
3.54
3.48
3.92
3.78
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
22.53
22.79
21.80
22.06
21.10
21.36
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
21
855
975
855
975
855
975
CFM
5.94
6.03
5.11
5.22
4.12
4.22
855
975
855
975
855
975
CFM
19.99
20.23
19.18
19.44
18.27
18.54
17.51
17.72
16.81
17.03
16.01
16.24
1.99
1.95
2.21
2.17
2.46
2.41
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.70
1.69
1.90
1.90
2.11
2.11
8.24
8.36
7.48
7.61
6.57
6.69
1.77
1.76
1.97
1.97
2.18
2.18
12.26
12.41
11.48
11.65
10.55
10.72
11.25
11.39
10.54
10.69
9.68
9.84
1.84
1.82
2.05
2.03
2.27
2.26
14.78
14.95
14.01
14.20
13.09
13.29
13.47
13.63
12.77
12.95
11.94
12.12
24.57
24.89
23.66
23.98
22.72
23.04
24.57
24.89
23.66
23.98
22.72
23.04
2.07
2.02
2.31
2.25
2.56
2.50
28.27
28.72
27.19
27.60
26.12
26.53
28.27
28.72
27.19
27.60
26.12
26.53
2.15
2.08
2.38
2.31
2.64
2.57
30.02
30.53
28.83
29.31
27.72
28.17
30.02
30.53
28.83
29.31
27.72
28.17
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
8.96
9.08
8.13
8.27
7.14
7.27
50XT-- A
2.18
2.11
2.42
2.34
2.68
2.60
Total
System
KW
1.89
1.86
2.11
2.08
2.33
2.31
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
5.46
5.55
4.70
4.80
3.79
3.88
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A42 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
50XT--A42 Low
Heating Capacity
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
14.43
14.60
13.73
13.92
12.91
13.11
1.91
1.88
2.13
2.10
2.36
2.33
36.61
37.32
35.19
35.86
33.63
34.44
36.61
37.32
35.19
35.86
33.63
34.44
2.32
2.23
2.56
2.47
2.83
2.73
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
15.91
16.10
15.14
15.35
14.24
14.46
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
22
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
3.60
30.85
32.01
25.88
46.32
41.09
32.81
34.10
27.17
46.29
50.04
55.24
46.32
46.57
47.25
51.07
56.36
3.53
38.20
45.43
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
2.23
22.28
23.21
19.02
33.04
29.57
23.76
24.78
20.03
33.19
36.14
40.19
33.04
33.42
34.05
37.06
41.21
2.23
27.41
32.49
2.23
2.23
2.24
2.21
2.21
2.21
2.21
31.49
31.49
2.22
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
1100
965
CFM
EWB
_F (_C)
EVAPORATOR
AIR
3.49
3.48
3.48
3.53
3.46
3.42
3.41
44.39
44.39
3.40
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A48 Low Cool
1600
1400
CFM
EWB
_F (_C)
EVAPORATOR
AIR
50XT-- A48 High Cool
26.25
33.18
31.89
44.43
44.10
24.98
31.11
29.95
37.29
42.70
3.91
3.84
3.80
3.79
3.79
3.84
3.77
3.73
3.72
3.71
39.26
35.29
32.40
31.85
31.76
38.34
34.45
31.62
30.96
30.30
19.35
24.10
23.08
28.86
31.76
18.36
22.54
21.62
26.74
30.30
2.48
2.49
2.50
2.50
2.50
2.46
2.47
2.48
2.48
2.49
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
53.67
48.62
44.97
44.43
44.10
52.68
47.71
44.11
43.33
42.70
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
Cooling Extended Performance Table
25.29
32.20
30.92
42.54
42.54
24.04
30.16
29.00
36.31
40.87
4.25
4.18
4.13
4.13
4.13
4.18
4.11
4.06
4.05
4.05
47.69
43.19
39.95
41.40
40.41
46.96
42.50
39.28
38.87
38.88
24.26
31.17
29.90
41.40
40.41
23.04
29.14
28.00
38.87
38.88
4.62
4.55
4.50
4.51
4.51
4.55
4.48
4.43
4.43
4.43
37.19
33.40
30.64
30.39
30.39
36.37
32.65
29.95
29.34
29.02
18.64
23.38
22.37
30.39
30.39
17.67
21.84
20.92
26.03
29.02
2.77
2.78
2.80
2.80
2.80
2.75
2.77
2.78
2.78
2.78
34.96
31.39
28.77
28.90
28.90
34.25
30.72
28.14
27.64
27.63
17.88
22.62
21.61
28.90
28.90
16.93
21.10
20.18
27.57
27.63
3.10
3.12
3.14
3.13
3.13
3.08
3.10
3.12
3.12
3.12
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
50.80
46.00
42.55
42.54
42.54
49.93
45.21
41.79
41.11
40.87
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
23.15
30.06
28.80
38.04
38.04
22.53
28.60
26.91
36.67
36.67
5.03
4.96
4.91
4.92
4.92
4.52
4.43
4.84
4.84
4.84
32.54
29.20
26.73
27.27
27.27
31.95
28.62
26.19
26.10
26.10
17.07
21.81
20.81
27.27
27.27
16.14
20.30
19.39
26.10
26.10
3.48
3.51
3.53
3.52
3.52
3.46
3.49
3.52
3.51
3.51
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
44.30
40.12
37.11
38.04
38.04
45.43
41.00
36.54
36.67
36.67
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
22.59
29.43
27.59
36.61
36.62
20.75
26.85
25.73
35.30
34.16
5.06
4.97
5.36
4.93
4.93
5.41
5.34
5.29
4.84
5.30
29.89
26.79
24.50
25.45
25.45
29.40
26.31
24.04
24.40
24.40
16.19
20.93
19.92
25.45
25.45
15.29
19.44
18.53
24.40
24.40
3.92
3.95
3.99
3.97
3.97
3.90
3.94
3.97
3.97
3.96
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
42.55
38.36
33.97
36.61
36.62
40.04
36.24
33.51
35.30
34.16
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
23
1400
1600
1400
1600
1400
1600
CFM
13.33
13.53
12.72
12.94
11.86
12.09
1400
1600
1400
1600
1400
1600
CFM
33.39
33.83
32.29
32.73
31.08
31.53
29.26
29.64
28.29
28.68
27.23
27.62
3.16
3.15
3.43
3.41
3.71
3.69
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
2.19
2.21
2.39
2.41
2.58
2.61
15.98
16.18
15.40
15.62
14.63
14.88
2.40
2.42
2.62
2.64
2.84
2.86
21.89
22.14
21.24
21.52
20.40
20.70
20.10
20.32
19.50
19.75
18.73
19.00
2.63
2.64
2.87
2.88
3.11
3.12
25.47
25.78
24.70
25.00
23.85
24.18
23.23
23.51
22.52
22.79
21.74
22.05
40.69
41.16
39.25
39.82
37.81
38.39
40.69
41.16
39.25
39.82
37.81
38.39
3.49
3.48
3.77
3.74
4.07
4.04
46.59
46.62
44.95
45.50
43.28
43.94
46.59
46.62
44.95
45.50
43.28
43.94
3.77
3.72
4.05
4.04
4.37
4.33
49.36
49.42
47.65
48.12
45.87
46.54
49.36
49.42
47.65
48.12
45.87
46.54
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
17.37
17.59
16.74
16.98
15.90
16.17
50XT-- A
3.91
3.83
4.19
4.17
4.51
4.48
Total
System
KW
2.80
2.80
3.05
3.05
3.31
3.31
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
12.27
12.45
11.71
11.91
10.91
11.12
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A48 High Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A48 High
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
24.61
24.92
23.83
24.14
23.04
23.36
2.88
2.88
3.13
3.13
3.40
3.40
58.12
58.16
57.17
57.23
55.65
55.70
58.12
58.16
57.17
57.23
55.65
55.70
4.29
4.22
4.65
4.57
5.07
4.92
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
27.14
27.47
26.27
26.61
25.40
25.75
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
24
965
1100
965
1100
965
1100
CFM
5.86
5.95
5.21
5.32
4.44
4.55
965
1100
965
1100
965
1100
CFM
21.99
22.24
21.27
21.53
20.45
20.73
19.27
19.48
18.64
18.87
17.92
18.16
2.26
2.22
2.53
2.48
2.81
2.76
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
1.86
1.86
2.08
2.08
2.32
2.33
8.32
8.42
7.76
7.88
7.05
7.17
1.96
1.95
2.19
2.18
2.43
2.43
12.71
12.85
12.11
12.27
11.36
11.53
11.67
11.79
11.12
11.27
10.42
10.58
2.05
2.03
2.30
2.28
2.55
2.54
15.64
15.80
15.01
15.20
14.25
14.45
14.26
14.41
13.69
13.86
12.99
13.17
27.98
28.40
26.97
27.36
26.04
26.39
27.98
28.40
26.97
27.36
26.04
26.39
2.40
2.33
2.66
2.59
2.96
2.89
32.83
33.33
31.72
32.20
30.48
30.97
32.83
33.33
31.72
32.20
30.48
30.97
2.51
2.43
2.78
2.70
3.08
2.99
35.07
35.65
33.87
34.41
32.72
33.22
35.07
35.65
33.87
34.41
32.72
33.22
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
9.04
9.16
8.43
8.56
7.66
7.79
2.56
2.47
2.84
2.74
3.15
3.04
Total
System
KW
2.12
2.09
2.37
2.34
2.64
2.61
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
5.39
5.47
4.80
4.89
4.09
4.18
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A48 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
50XT--A48 Low
Heating Capacity
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
15.42
15.58
14.83
15.01
14.13
14.33
2.15
2.12
2.41
2.37
2.68
2.64
43.68
44.63
41.97
42.84
40.41
41.15
43.68
44.63
41.97
42.84
40.41
41.15
2.76
2.66
3.05
2.93
3.37
3.24
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
17.00
17.18
16.35
16.55
15.58
15.80
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
25
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
58.24
54.46
43.33
44.86
35.33
56.01
50.62
40.75
42.11
33.69
58.24
58.46
59.23
63.56
69.55
56.01
57.19
58.18
62.48
68.41
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
57
(13.9)
62
(16.7)
63*
(17.2)
67
(19.4)
72
(22.2)
EWB
_F (_C)
2.71
29.14
30.17
24.40
41.69
38.83
31.09
32.23
25.68
41.76
45.04
49.59
41.69
41.98
42.72
46.03
50.62
2.72
35.96
40.94
2.72
2.72
2.72
2.68
2.68
2.69
2.69
39.88
39.88
2.70
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
See page 29 for cooling notes.
1370
1200
CFM
EVAPORATOR
AIR
4.48
4.39
4.32
4.31
4.29
4.59
4.50
4.42
4.42
4.41
75 (23.8)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A60 Low Cool
1750
2000
CFM
EWB
_F (_C)
EVAPORATOR
AIR
50XT-- A60 High Cool
32.46
40.86
39.51
49.37
53.76
34.07
43.59
42.07
55.79
55.10
4.91
4.81
4.74
4.73
4.72
5.02
4.92
4.85
4.84
4.84
48.09
43.75
40.63
40.02
40.00
47.18
42.87
39.78
39.01
38.34
24.78
31.34
30.20
40.02
40.00
23.52
29.29
28.27
35.09
38.34
3.04
3.05
3.07
3.07
3.07
3.01
3.02
3.04
3.04
3.04
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
65.01
59.41
55.35
54.45
53.76
66.01
60.35
56.27
55.79
55.10
85 (29.4)
Capacity
Total
MBtuh
System
KW
Total
Sens
Cooling Extended Performance Table
31.14
39.90
38.20
48.01
51.30
32.73
42.24
41.83
55.36
54.80
5.37
5.18
5.20
5.19
5.19
5.48
5.38
4.69
4.69
4.69
57.37
55.71
51.66
50.93
50.80
58.07
56.62
52.48
52.73
52.40
29.72
39.39
37.95
47.74
50.80
31.30
42.14
40.49
52.73
52.40
5.88
5.21
5.10
5.08
5.08
5.99
5.33
5.22
5.23
5.23
45.37
41.27
38.35
38.18
37.90
44.52
40.50
37.61
36.90
36.64
23.83
30.36
29.24
38.18
37.90
22.56
28.35
27.34
34.14
36.64
3.41
3.43
3.45
3.45
3.45
3.38
3.40
3.42
3.43
3.43
42.32
38.55
35.86
36.13
35.45
41.68
37.91
35.23
34.90
34.74
22.77
29.32
28.21
36.13
35.45
21.55
27.31
26.33
34.90
34.74
3.83
3.86
3.89
3.89
3.89
3.80
3.84
3.87
3.87
3.87
28.19
36.58
35.27
45.50
45.20
29.74
39.21
37.74
46.94
46.70
6.44
6.34
6.26
6.27
6.27
6.54
6.44
6.37
6.40
6.40
39.01
35.56
33.13
33.82
33.62
38.47
35.04
32.61
32.60
31.90
21.64
28.18
27.09
33.82
33.62
20.43
26.21
25.22
32.60
31.90
4.31
4.36
4.40
4.38
4.38
4.28
4.33
4.37
4.37
4.37
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
52.97
48.47
45.27
45.50
45.20
53.51
48.97
45.80
46.94
46.70
115 (46.1)
Capacity
Total
MBtuh
System
KW
Total
Sens
50XT-- A
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
61.35
57.00
52.28
51.51
51.30
62.20
56.88
55.68
55.36
54.80
CONDENSER ENTERING AIR TEMPERATURES _F (_C)
95 (35)
105 (40.5)
Capacity
Capacity
Total
Total
MBtuh
MBtuh
System
System
KW
KW
Total
Sens
Total
Sens
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
26.53
34.88
33.59
41.99
41.70
28.03
37.49
36.02
43.20
42.90
7.04
6.94
6.87
6.89
6.89
7.15
7.05
6.97
7.02
7.02
35.34
32.25
30.10
31.19
30.90
34.93
31.84
29.69
30.16
29.70
20.40
26.93
25.87
31.19
30.90
19.21
25.00
24.04
30.16
29.70
4.86
4.92
4.98
4.95
4.95
4.84
4.90
4.96
4.94
4.94
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
48.09
44.00
41.16
41.99
41.70
48.46
44.37
41.56
43.20
42.90
125 (51.6)
Capacity
Total
MBtuh
System
KW
Total
Sens
26
1750
2000
1750
2000
1750
2000
CFM
17.01
17.24
16.62
16.88
16.04
16.31
1750
2000
1750
2000
1750
2000
CFM
41.80
41.90
40.71
41.19
39.61
40.12
36.62
36.71
35.67
36.09
34.70
35.15
4.14
4.12
4.52
4.53
4.93
4.92
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
3.08
3.12
3.40
3.44
3.72
3.77
19.89
20.13
19.53
19.78
18.99
19.27
3.31
3.34
3.65
3.69
4.01
4.04
27.05
27.37
26.51
26.82
25.93
26.26
24.83
25.12
24.33
24.62
23.80
24.11
3.55
3.57
3.91
3.93
4.29
4.31
31.57
31.93
30.80
31.18
30.06
30.42
28.78
29.11
28.08
28.43
27.41
27.74
50.24
50.80
49.81
50.10
48.50
48.79
50.24
50.80
49.81
50.10
48.50
48.79
4.44
4.36
4.91
4.84
5.35
5.29
56.80
56.90
56.00
56.40
55.46
55.90
56.80
56.90
56.00
56.40
55.46
55.90
4.63
4.40
5.13
4.99
5.63
5.56
59.20
59.50
58.75
59.10
58.45
58.90
59.20
59.50
58.75
59.10
58.45
58.90
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
21.62
21.87
21.22
21.50
20.64
20.95
4.67
4.42
5.26
5.02
5.74
5.66
Total
System
KW
3.73
3.74
4.10
4.11
4.49
4.50
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
70
(21.1)
80
(26.7)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
15.65
15.86
15.29
15.53
14.75
15.01
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A60 High Con’t.
70
(21.1)
80
(26.7)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A60 High
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
50XT-- A
30.55
30.90
29.86
30.22
29.01
29.39
3.82
3.83
4.19
4.20
4.59
4.59
64.80
65.10
63.56
64.30
62.90
63.50
64.80
65.10
63.56
64.30
62.90
63.50
4.75
4.50
5.44
5.11
6.23
5.78
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
33.69
34.08
32.92
33.32
31.99
32.41
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
27
1200
1370
1200
1370
1200
1370
CFM
9.91
10.02
9.46
9.59
8.82
8.96
1200
1370
1200
1370
1200
1370
CFM
28.14
28.41
27.54
27.81
26.82
27.11
24.66
24.90
24.13
24.37
23.50
23.76
2.91
2.84
3.28
3.21
3.69
3.61
30 (-- 1.1)
Capacity
Total
MBtuh
System
KW
Total
Integ
2.55
2.55
2.89
2.89
3.25
3.25
12.36
12.48
11.94
12.08
11.36
11.52
2.64
2.62
2.99
2.97
3.36
3.34
17.58
17.73
17.10
17.29
16.47
16.67
16.14
16.28
15.69
15.87
15.12
15.30
2.72
2.69
3.08
3.05
3.46
3.43
20.92
21.10
20.40
20.61
19.75
19.98
19.07
19.23
18.60
18.79
18.01
18.22
35.04
35.43
34.06
34.46
33.24
33.60
35.04
35.43
34.06
34.46
33.24
33.60
3.03
2.94
3.40
3.31
3.82
3.71
40.62
41.18
39.50
40.01
38.34
38.85
40.62
41.18
39.50
40.01
38.34
38.85
3.13
3.03
3.51
3.40
3.92
3.80
43.31
43.95
42.04
42.63
40.91
41.41
43.31
43.95
42.04
42.63
40.91
41.41
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
40 (4.4)
47 (8.3)
50 (10)
Capacity
Capacity
Capacity
Total
Total
MBtuh
MBtuh
MBtuh
System
System
KW
KW
Total
Integ
Total
Integ
Total
Integ
13.43
13.56
12.98
13.13
12.35
12.52
50XT-- A
3.18
3.07
3.56
3.44
3.99
3.85
Total
System
KW
2.78
2.74
3.15
3.10
3.54
3.49
OUTDOOR COIL ENTERING AIR TEMPERATURES _F (_C)
0 (-- 17.7)
10 (-- 12.2)
17 (-- 8.3)
Capacity
Capacity
Capacity
Total
Total
Total
MBtuh
MBtuh
MBtuh
System
System
System
KW
KW
KW
Total
Integ
Total
Integ
Total
Integ
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:
Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
9.11
9.22
8.70
8.82
8.11
8.24
- 10 (-- 23.3)
Capacity
Total
MBtuh
System
KW
Total
Integ
50XT--A60 Low Con’t.
80
(26.7)
70
(21.1)
60
(15.6)
EDB
_F
(_C)
INDOOR AIR
Heating Capacity
50XT--A60 Low
PERFORMANCE DATA--STANDARD ECM INDOOR MOTOR
20.36
20.54
19.88
20.08
19.29
19.51
2.81
2.76
3.18
3.13
3.57
3.52
53.58
54.06
51.83
52.74
50.19
51.04
53.58
54.06
51.83
52.74
50.19
51.04
3.38
3.19
3.77
3.62
4.21
4.04
60 (15.5)
Capacity
Total
MBtuh
System
KW
Total
Integ
22.45
22.64
21.92
22.14
21.27
21.51
20 (-- 6.6)
Capacity
Total
MBtuh
System
KW
Total
Integ
PERFORMANCE DATA (CONT)
Sensible capacity (Btuh)
50XT -- A
LEGEND
BF— Bypass Factor
edb— Entering Dry--Bulb
Ewb— Entering Wet--Bulb
kW — Total Unit Power Input
ldb— Leaving Dry--Bulb
lwb— Leaving Wet--Bulb
SHC— Sensible Heat Capacity (1000 Btuh)
TC — Total Capacity (1000 Btuh) (net)
*At 75°F (23.8°C) entering dry bulb (Tennessee Valley Authority
[TVA] rating conditions); all other at 80°F (26.6°C) entering dry
bulb.
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:
1.10 x cfm
tldb
= tedb --
tlwb
=
hlwb
total capacity (Btuh)
= hewb --4.5 x cfm
Wet--- bulb temperature corresponding to enthalpy
air leaving evaporator coil (hlwb)
Where: hewb = Enthalpy of air entering evaporator coil
4. The SHC is based on 80_F (26.6_C) edb temperature of air
entering evaporator coil. Below 80_F (26.6_C) edb, subtract (corr
factor x cfm) from SHC.
Above 80_F (26.6_C) edb, add (corr factor x cfm) to SHC.
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.
Example: 15.0 kW (at 240v) heater on 208v
= 15.0 (.75 mult factor)
= 11.25 capacity at 208v
Multiplication Factors
Heater kW Rating
240
Voltage Distribution V/3/60
200
208
230
240
28
Multiplication Factor
.69
.75
.92
1.00
PERFORMANCE DATA (CONT)
Wet Coil/Dry Coil Air Delivery -- Low Stage
24
30
36
42
48
60
SYSTEM SETTING
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
0.1
0.2
0.3
525
600
525
600
525
600
613
700
613
700
613
700
743
850
743
850
743
850
853
975
853
975
853
975
963
1100
963
1100
963
1100
1200
1372
1200
1372
1200
1372
EXTERNAL STATIC PRESSURE (in. wc)
0.4
0.5
0.6
0.7
Variable based on Comfort Settings
525
525
525
525
600
600
600
600
Variable based on Comfort Settings
613
613
613
613
700
700
700
700
Variable based on Comfort Settings
743
743
743
743
850
850
850
850
Variable based on Comfort Settings
853
853
853
853
975
975
975
975
Variable based on Comfort Settings
963
963
963
963
1100
1100
1100
1100
Variable based on Comfort Settings
1200
1200
1200
1200
1372
1372
1372
1372
0.8
0.9
1.0
525
600
525
600
525
600
613
700
613
700
613
700
743
850
743
850
743
850
853
975
853
975
853
975
963
1100
963
1100
963
1100
1200
1372
1200
1372
1200
1372
0.8
0.9
1.0
700
800
700
800
700
800
875
1000
875
1000
875
1000
1050
1200
1050
1200
1050
1200
1225
1400
1225
1400
1225
1400
1400
1600
1400
1600
1400
1600
1750
2000
1750
2000
1750
2000
Wet Coil/Dry Coil Air Delivery -- High Stage
208/230 VOLT
UNIT
SIZE
24
30
36
42
48
60
SYSTEM SETTING
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
COMFORT (Default)
EFFICIENCY
MAX
0.1
0.2
0.3
700
800
700
800
700
800
875
1000
875
1000
875
1000
1050
1200
1050
1200
1050
1200
1225
1400
1225
1400
1225
1400
1400
1600
1400
1600
1400
1600
1750
2000
1750
2000
1750
2000
EXTERNAL STATIC PRESSURE (in. wc)
0.4
0.5
0.6
0.7
Variable based on Comfort Settings
700
700
700
700
800
800
800
800
Variable based on Comfort Settings
875
875
875
875
1000
1000
1000
1000
Variable based on Comfort Settings
1050
1050
1050
1050
1200
1200
1200
1200
Variable based on Comfort Settings
1225
1225
1225
1225
1400
1400
1400
1400
Variable based on Comfort Settings
1400
1400
1400
1400
1600
1600
1600
1600
Variable based on Comfort Settings
1750
1750
1750
1750
2000
2000
2000
2000
Air delivery values are based on operating voltage of 230v. Filter and electric heater will not change air delivery values.
NOTES:
1. See User Interface instructions for more information on Max, Efficiency, and Comfort Settings
2. Efficiency Setting operates at 350 cfm/ton (nominal) and Max Setting operates at 400 cfm/ton (nominal)
29
50XT -- A
208/230 VOLT
UNIT
SIZE
TYPICAL PIPING AND WIRING
ROOF-MOUNTING
CURB
ROOF
RETURN-AIR
FLEXIBLE DUCT
50XT -- A
SUPPLY-AIR
FLEXIBLE DUCT
CEILING
CONCENTRIC DIFFUSER BOX
(FIELD-SUPPLIED)
A09233
INDOOR
THERMOSTAT
RETURN
AIR
FROM
POWER
SOURCE
TOP COVER
DISCONNECT
PER NEC
POWER ENTRY
CONTROL ENTRY
A09091
30
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. Remove the
inserts similar to removing an electrical knock--out. Leave on duct
covers to seal the horizontal discharge openings in the unit. Units
installed in horizontal discharge orientation do not require duct covers.
Minimum cooling ambient operating temperature — All standard units have a minimum ambient operating temperature of 55°F
(12.7°C). With low--ambient cooling enabled at the UI, units can operate at temperatures down to 0°F (--17.7°C).
Maximum operating outdoor air temperature — Maximum outdoor operating air temperature for cooling is 125°F (51.6°C).
Balance Point Worksheet
70
50XT -- A
Building Heat Loss, 1000BTUH
Unit Intetgrated Heating Capacity,
1000BTUH
Based on Entering Indoor Air of 70 Deg. F and Rated CFM
60
50
60
48
40
42
36
30
30
24
20
10
0
-20
(-28.9)
-10
0
(-23.3) (-17.8)
10
(-12.2)
20
(-6.7)
30
(-1.1)
40
(4.4)
50
(10)
60
(15.6)
Outdoor Air Temp ˚F (˚C)
C03008
31
ELECTRICAL DATA
UNIT SIZE
V--PH--HZ
VOLTAGE
RANGE
OFM
FLA
IFM
FLA
ELECTRIC HEAT
SINGLE POINT POWER
SUPPLY
NOMINAL
FLA
MCA
MOCP
kW*
--/---/-24.3/24.3
35/35
3.8/5.0
18.1/20.8
46.9/50.3
50/60
24
208/230--1--60
187
253
15.3
52.0
0.9
4.3
5.4/7.2
26.0/30.0
56.8/61.8
60/70
7.5/10.0
36.1/41.7
69.4/76.4
70/80
--/---/-26.2/26.2
40/40
3.8/5.0
18.1/20.8
48.7/52.2
50/60
30
208/230--1--60
187
253
16.8
70.0
0.9
4.3
5.4/7.2
26.0/30.0
58.7/63.7
60/70
7.5/10.0
36.1/41.7
71.3/78.3
80/80
11.3/15.0
54.2/62.5
93.9/104.3
100/110
--/---/-28.6/28.6
45/45
3.8/5.0
18.1/20.8
51.2/54.6
60/60
36
208/230--1--60
187
253
16.7
82.0
0.9
6.8
5.4/7.2
26.0/30.0
61.1/66.1
70/70
7.5/10.0
36.1/41.7
73.7/80.7
80/90
11.3/15.0
54.2/62.5
96.3/106.7
100/110
--/---/-34.9/34.9
50/50
3.8/5.0
18.1/20.8
57.5/60.9
60/70
5.4/7.2
26.0/30.0
67.4/72.4
70/80
42
208/230--1--60
187
253
21.8
96.0
0.9
6.8
7.5/10.0
36.1/41.7
80.0/87.0
90/90
11.3/15.0
54.2/62.5
102.6/113.0
110/125
15.0/20.0
72.2/83.3
125.2/139.1
150/150
--/---/-43.1/43.1
60/60
3.8/5.0
18.1/20.8
65.7/69.1
70/70
5.4/7.2
26.0/30.0
75.6/80.6
80/90
48
208/230--1--60
187
253
27.8
96.0
1.5
6.8
7.5/10.0
36.1/41.7
88.2/95.2
90/100
11.3/15.0
54.2/62.5
110.8/121.2
125/125
15.0/20.0
72.2/83.3
133.4/147.3
150/150
--/---/-45.2/45.2
60/60
3.8/5.0
18.1/20.8
67.7/71.2
70/80
5.4/7.2
26.0/30.0
77.6/82.7
80/90
60
208/230--1--60
187
253
27.3
118.0
1.9
9.1
7.5/10.0
36.1/41.7
90.3/97.2
100/110
11.3/15.0
54.2/62.5
112.9/123.3
125/125
15.0/20.0
72.2/83.3
135.4/149.3
150/150
*Heater capacity (kW) based on heater voltage of 208v & 240v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
MIN
50XT -- A
COMPRESSOR
MAX
RLA
LRA
LEGEND
FLA
— Full Load Amps
LRA
— Locked Rotor Amps
®
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
RLA
— Rated Load Amps
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.
32
50XT -- A
TYPICAL WIRING SCHEMATIC — 230--1--60
A09310
33
CONTROLS
Sequence of Operation
The 50XT packaged heat pump is designed for installation with a
communicating UI. This unit will not respond to commands provided
by a common thermostat except under certain emergency situations.
The UI uses temperature, humidity and other data supplied from
indoor and outdoor system components to control heating or cooling
system for optimum comfort. The unit will be commanded by the UI
to supply airflow. The unit will operate the indoor fan at requested
airflow for most modes.
50XT -- A
The nominal requested airflow in high stage will be 350 cfm per ton
of nominal cooling capacity as defined by unit size. Actual airflow
request will be adjusted from nominal using indoor and outdoor
temperature and indoor humidity data to optimize the system
operation for occupant comfort and system efficiency. Refer to UI
literature for further system control details.
Airflow during electric heater operation must be greater than a
minimum level for safe operation. If UI instructs unit to turn on
electric heat and the requested airflow is less than the minimum level
the fan coil control will override requested value.
NOTE: Once the compressor has started and then has stopped, it
should not be started again until 4 minutes have elapsed. The cooling
cycle remains “on” until the room temperature drops to point that is
slightly below the cooling control setting of the UI.
COOLING AND HEATING OPERATION
With a call for first stage cooling, the outdoor fan, reversing valve,
and low stage compressor are energized. If low--stage cannot
satisfy cooling demand, high--stage cooling is energized by the UI.
After second stage is satisfied, the unit returns to low--stage
operation until first stage is satisfied or until second stage is
required again. When both first stage and second stage cooling are
satisfied, the compressor will shut off. The reversing valve will
remain energized until the control board power is removed or a call
for heating is initiated. With a call for heating, the outdoor fan and
compressor are energized. The compressor will operate in high or
low stage operation, as needed, to meet the heating demand. When
the heating demand is satisfied, the compressor and fan will shut
off. The reversing valve is de--energized in the heating mode.
NOTE: When two--stage unit is operating at low--stage, system
vapor (suction) pressure will be higher than a standard single--stage
system or high--stage operation.
NOTE:
Outdoor fan motor will continue to operate for one
minute after compressor shuts off, when outdoor ambient is greater
than or equal to 100°F (38°C).
UTILITY INTERFACE WITH INFINITY CONTROL
The utility curtailment relay should be connected to factory
supplied pigtails (PINK connected to R, VIOLET connected to Y2
on the control board) located in the low voltage splice box (see
Typical Wiring Schematic ). This input allows a power utility
device to interrupt compressor operation during peak load periods.
When the utility sends a signal to shut the system down, the UI will
display “Curtailment Active”.
Infinity Controlled Low Ambient Cooling
NOTE: When this unit is operating below 55_F (12.7°C) outdoor
temperature, provisions must be made for low ambient operation.
This unit is capable of low ambient cooling down to 0_F
(--17.7°C)ONLY when using the Infinity control. A low ambient kit
is not required, and the outdoor fan motor does not need to be replaced
for Infinity controlled low ambient operation. Low ambient cooling
must be enabled in the UI set--up. Fan may not begin to cycle until
about 40_F (4.4°C) OAT. Fan will cycle based on coil and outdoor
air temperature.
34
GUIDE SPECIFICATIONS
PART I -- GENERAL
SYSTEM DESCRIPTION
Outdoor rooftop or ground mounted heat pump unit utilizing a
hermetic, 2--stage scroll compressor for heating and cooling duty
and optional electric heating. Unit shall discharge supply air vertically or horizontally as shown 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 AHRI 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 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.
3. 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 discharge air vertically.
D. Compressor:
1. Fully hermetic, 2--stage scroll 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:
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.
F. Refrigerant Metering Device:
Refrigerant metering device shall be of the single body,
fixed orifice feed type (outdoor) and TXV (indoor).
G. Filters:
Filter section shall consist of field--installed, throw--away,
1--in. thick fiberglass filters of commercially available sizes.
H. Controls and Safeties:
1. Unit controls shall be complete with self--contained low
voltage control circuit.
2. Units shall incorporate an internal compressor protector that
provides reset capability.
3. Unit shall provide high-- and low--/loss--of--charge pressure
safety protection.
I. Operating Characteristics:
1. Unit shall be capable of starting and running at 125°F
(51.6_C) ambient outdoor temperature, exceeding maximum
load criteria of AHRI Standard 240.
PART 2-- PRODUCTS
EQUIPMENT
A. General:
Factory--assembled, single--piece, heat pump. Contained within
the unit enclosure shall be all factory wiring, piping, controls, refrigerant charge (R--410A), and special features required prior to
field start--up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of phosphated, zinc--coated,
prepainted steel capable of withstanding 500 hrs of salt spray.
2. Normal service shall be through a single removable cabinet
panel.
2. Compressor shall be capable of operation down to 55°F
(12.7_C) ambient outdoor temperature in cooling and --10°F
in heating.
3. Unit shall be capable of low--ambient cooling (below 55_F
(12.7_C) ambient outdoor temperature) with low--ambient
cooling enabled on the UI.
J. Electrical Requirements:
All unit power wiring shall enter 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.
3. The unit shall be constructed on a rust proof unit base that has
an externally trapped, integrated sloped drain pan.
4. Indoor fan compartment top surface shall be insulated with a
minimum 1/2--in. (13 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 foil--faced insulation 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.
2. All fan motors shall have permanently lubricated bearings and
inherent automatic--reset thermal overload protection.
3. Outdoor fan motor shall be totally enclosed.
4. Evaporator fan motor to be full featured ECM Motor.
L. Grille
1. Louvered Grille:
Louvered grille shall be standard on all units.
C. Fans:
1. The indoor fan shall be variable--speed motor and control, as
shown on equipment drawings.
35
50XT -- A
SINGLE--PACKAGED HEAT PUMP SYSTEM
CONSTANT VOLUME APPLICATION
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 2 TO 5 TONS, NOMINAL (COOLING)
MODEL NUMBER: 50XT--A
2. 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.
GUIDE SPECIFICATIONS (CONT)
M. Special Features:
1. Coil Options
Base unit with tin plated indoor coil hairpins available as a
factory installed option.
4. Filter Rack Kit:
Shall provide filter mounting for downflow and horizontal
applications.
2. Infinity User Interface:
To provide for two--stage heat pump heating, two--stage
cooling, and electric (auxiliary) heat, in addition to manual or
automatic changeover and indoor fan control.
1. Flat Roof Curb:
Curbs shall have seal strip and a wood nailer for flashing and
shall be installed per manufacturer’s instructions.
2. Manual Outdoor Air Damper:
Package shall consist of damper, bird screen, and rain hood
which can be preset to admit outdoor air for year--round ventilation.
3. 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.
3. Square--To--Round Duct Transitions:
Shall have the ability to convert the supply and return openings from rectangular to round (24--48 sizes only).
50XT -- A
4. Dual Point Electric Heaters:
Allows you to power the electric heater and unit contactor
separately by having two individual field power supply
circuits connected respectively.
Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 09/10
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
36
Catalog No: 50XT ---06PD
Replaces: 50XT--- 05PD