25HCD3
Comfort™ 13 Heat Pump
with Puronr Refrigerant
1 --- 1 / 2 t o 5 N o m i n a l To n s
Advance Product Data
the environmentally sound refrigerant
Carrier heat pumps with Puronr refrigerant provide a collection of
features unmatched by any other family of equipment. The 25HCD
has b een designed utilizing Carrier’s Puro n refrigerant. The
environmentally sound refrigerant allows consumers to make a
responsible decision in the protection of the earth’s ozone layer.
This product has been designed and manufactured to meet Energy
Starr criteria for energy efficiency when matched with appropriate
coil components. Refer to the combination ratings in the Product
Data for system combinations that meet Energy Starr guidelines.
NOTE: Ratings contained in this document are subject to
change at any time. Always refer to the AHRI directory
(www.ahridirectory.org) for the most up--to--date ratings
information.
INDUSTRY LEADING
FEATURES / BENEFITS
Efficiency
S 13 SEER/ 10.5 -- 12.5 EER/ 7.7 -- 8.2 HSPF
S Microtube Technologyt refrigeration system
S Indoor air quality accessories available
Sound
S Sound level as low as 73 dBA
S Sound levels as lo w as 73 dBA with accessory sound blanket
Comfort
S System supports Edger Thermidistatt or standard thermostat
controls
Reliability
S Puronr refrigerant -- environmentally sound, won’t deplete the
ozone layer and low lifetime service cost.
S Scroll compressor
S Internal pressure relief valve
S Internal thermal overload
S High pressure switch
S Loss of charge switch
S Filter drier
S Balanced refrigeration system for maximum reliability
Durability
WeatherArmort protection package:
S Solid, durable sheet metal construction
S Dense wire coil guard available
(3--phase units come standard with dense wire coil guard)
S Baked-- on powder paint
Applications
S Long--line -- up to 250 feet (76.20 m) total equivalent length, up
to 200 feet (60.96 m) condenser above evaporator, or up to 80 ft.
(24.38 m) evaporator above condenser (See Longline Guide for
more information.)
S Low ambient (down to --20_F/-- 28.9_C) with accessory kit
MODEL NUMBER NOMENCLATURE
12345678910111213
NNAAA/NNNNA/NA/NA/NNN
25HCD336A0030
Product
Series
25=HPH=RESHP C=Comfort D=Puron3=13SEER
the environmentally sound refrigerant
25HCD3
Product
Famil y
Tier
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.
Major
Series
SEER
Cooling
Capacity
Grille
Variations
A=Dense Grille
W=Wide Grille
OpenOpenVoltage
0=Not
Defined
0=Not
Defined
This product has been designed and manufactu red to
meet En ergy St ar criteria for energy effici ency when
matched with appropriate coil com ponents. However,
proper r efrigerant charge and proper air flow are critical
to achieve rated capacity and efficiency. Installation of
this product should follow all manufacturing refrigerant
charging and air flow instructions. Failure to confirm
proper charge and air flow may reduce energy
efficiency and shorten equipment life.
*Units are rated with 25 ft (7.6 m) of lineset length. See Vapor Line Sizing and Cooling Capacity Loss table when using other sizes and lengths of lineset.
Note: See unit Installation Instruction for proper installation.
119
(54.1)
137
(62.3)
Piston
49
4.0
(1.81)
124
(56.4)
142
(64.5)
Piston
57
5.11
(2.32)
149
(67.7)
170
(77.3)
Piston
67
5.83
(2.64)
36--- 31, 50,
60
169
(76.7)
189
(85.9)
Piston
70 (31)
73 (50,60)
6.06
(2.75)
42--- 31, 50
180
(81.6)
200
(90.9)
Piston
76
6.75
(3.06)
48--- 31, 50,
60
208
(94.3)
228
(103.6)
Piston
80 (31)
82 (50, 60)
7.72
(3.50)
60--- 30, 50, 60
250
(113.4)
282
(127.9)
TXV
(Puron Hard
Shutoff)
11.00
(4.99)
25HCD3
VAPOR LINE SIZING AND COOLING CAPACITY LOSS
Acceptable vapor line diameters provide adequate oil return to the compressor while avoiding excessive capacity loss. The suction line
diameters shown in the chart below are acceptable for HP systems with Puron refrigerant:
Vapor Line Sizing and Cooling Capacity Losses -- Puronr Refrigerant 1-- Stage Heat Pump Applications
Cooling Capacity Loss (%)
Unit
Nominal
Size (Btuh)
18,000
1 --- S t a g e
HP with
Puron
24,000
1 --- S t a g e
HP with
Puron
30,000
1 --- S t a g e
HP with
Puron
36,000
1 --- S t a g e
HP with
Puron
42,000
1 --- S t a g e
HP with
Puron
48,000
1 --- S t a g e
HP with
Puron
60,000
1 --- S t a g e
HP with
Puron
Standard Length = 80 ft. (24.4 m) or less total equivalent length
Applications in this area are long line. Accessories are required as shown recommended on Long Line Application Guidelines
Applications in this area may have height restrictions that limit allowable total equivalent length, when outdoor unit is below indoor unit See Long Line Application Guidelin es
Maximum
Liquid Line
Diameters
(In. OD)
3/8
3/8
3/8
3/8
3/8
3/8
3/8
Vapo r Line
Diameters
(In.) OD
1/21234678910
5/8001112233
5/8011233445
3/4000011111
5/8123345678
3/4001112223
7/8000011111
5/812456791011
3/4001122334
7/8000011112
3/4012234456
7/8001112223
3/4012345567
7/8001122233
3/412456791011
7/8012234455
1 --- 1/8000111111
Standard
Application
26--- 50
(7.9---15.2)
51--- 80
(15.5---24.4)
81--- 100
(24.7---30.5)
Total Equivalent Line Length ft. (m)
Long Line Application Re quires Accessories
101--- 125
(30.8---38.1)
126--- 150
(38.4---45.7)
151--- 175
(46.0---50.3)
176--- 200
(53.6---60.0)
201--- 225
(61.3---68.6)
226--- 250
(68.9---76.2)
3
REFRIGERANT PIPING LENGTH LIMITATIONS
Maximum Line Lengths:
The maximum allowable total equivalent length for heat pumps varies depending on the vertical separation. See the tables below for
allowable lengths depending on whether the outdoor unit is on the same level, above or below the outdoor unit.
Maximum Line Lengths for Heat Pump Applications
MAXIMUM ACTUAL LENGTH
Units on equal level200 (61)250 (76.2)N/A
Outdoor unit ABOVE
indoor unit
Outdoor unit BE LOW
indoor unit
{ Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
ft (m)
200 (61)250 (76.2)200 (61)
See Table ’Maximum Total Equivalent Length: Outdoor Unit BELOW Indoor Unit’
Maximum Total Equivalent Length{-- Outdoor Unit BELOW Indoor Unit
Liquid Line
Size
18000
HP with
25HCD3
Puron
24000
HP with
Puron
30000
HP with
Puron
36000
HP with
Puron
42000
HP with
Puron
48000
HP with
Puron
60000
HP with
Puron
* Maximum actual length not to exceed 200 ft (61 m)
{ Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
--- --- = o u t s i de a c c e p t a b l e r a n g e
Diameter
w/ TXV
3/8250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*250*
3/8250*250*250*250*250*250*150
3/8250*250*250*250*230160--- ---
3/8250*225*190150110--- ------ ---
0 --- 2 0
(0 -- - 6.1)
21--- 30
(6.4 --- 9.1)
HP with Puronr Refrigerant --- Maximum Total Equivalent Length{
Vertical Se paration ft (m) Outdoor unit BELOW indoor unit;
31--- 40
(9.4 --- 12.2)
MAXIMUM EQUIVALENT LENGTH{
41--- 50
(12.5 --- 15.2)
ft (m)
51--- 60
(15.5 --- 18.3)
MAXIMUM VERTICAL
SEPARATION ft (m)
61--- 70
(18.6 --- 21.3)
(21.6 --- 24.4)
71--- 80
LONG LINE APPLICATIONS
An application is considered Long Line when the refrigerant level in the system requires the use of accessories to maintain acceptable
refrigerant management for systems reliability. Defining a system as long line depends on the liquid line diameter, actual length of the tubing,
and vertical separation between the indoor and outdoor units.
For Heat Pump systems, the chart below shows when an application is considered Long Line. Beyond these lengths, long line accessories
are required:
HP WITH PURONr REFRIGERANT LONG LINE DESCRIPTION ft (m)
Beyond these lengths, long line accessories are required
Liquid Line SizeUnits On Same LevelOutdoor Below IndoorOutdoor Above Indoor
3/880 (24.4)20 (6.1) vertical or 80 (24.4) total80 (24.4)
x = Accessory S = Standard
*AvailablethroughRCD
{ Required accessories include ball bearing fan motor, compressor start assist (CAP / Relay), crankcase heater, evaporator freeze stat, isolation relay, hard
shut---off TXV or liquid line solenoid valve.
60---30,
50
60--- 60
25HCD3
ACCESSORY THERMOSTATS
PAR T NU MB ERPROGRAMGASELEC TRICHEAT PUMPHEATCOOL
TC ---PHP015 --- 2 Da y
T C ---NHP 0 1NP
TCSNHP01NP
TB ---PHP015 --- 2 Da y
T B --- NH P 0 1NP
PAR T NU MB ERBRIEF DESCRIPTIONTHERMOSTATS USED WITH
T X --- L BP0 1LargeDecorativeBackplateT P --- Px x , T P --- Nx x , T C --- Pxx
T X --- MBP 0 1Medium Decorative BackplateT C --- N x x, TB --- P x x
T X --- SBP 0 1Small Decorative BackplateT B --- Nx x
√√√
√√√
THERMOSTAT ACCESSORIES
√√
√√
√√
32
32
21
21
21
5
ACCESSORY USAGE GUIDELINE
REQUIRED FOR LOW---AMBIENT
Accessory
AccumulatorStandardStandardStandard
Ball Bearing Fan MotorYe s{NoNo
Compressor Start Assist Capacitor and
Evaporator Freeze ThermostatYe sNoNo
Liquid Line Solenoid ValveNoSee Long---Line Application GuidelineNo
Motor Master Control or
* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Residential Split---System Longline
Accessory Description and Usage (Listed Alphabetically)
1. Ball--Bearing Fan Motor
A fan motor with ball bearings which permits speed reduction
25HCD3
while maintaining bearing lubrication.
Usage Guideline:
Required on all units when using MotorMasterr
2. Compressor Start Assist -- Capacitor and Relay
Start capacitor and relay gives a ”hard” boost to compressor motor
at each start up.
Usage Guideline:
Required for reciprocating compressors in the following
applications:
Long line
Low ambient cooling
Hard shut off expansion valve on indoor coil
Liquid line solenoid on indoor coil
Required for single--phase scroll compressors in the
following applications:
Long line
Low ambient cooling
Suggested for all compressors in areas with a history of
low voltage problems.
3. Compressor Start Assist — PTC Type
Solid state electrical device which gives a ”soft” boost to the
compressor at each start--up.
Usage Guideline:
Suggested in installations with marginal power supply.
4. Crankcase Heater
An electric resistance heater which mounts to the base of the
compressor to keep the lubricant warm during off cycles. Improves
compressor lubrication on restart and minimizes the chance of
liquid slugging.
Usage Guideline:
Required in low ambient cooling applications.
Required in long line applications.
Suggested in all commercial applications.
5. Evaporator Freeze Thermostat
An SPST temperature--actuated switch that stops unit operation
when evaporator reaches freeze-- up conditions.
Usage Guideline:
Required when low ambient kit has been added.
6. Isolation Relay
An SPDT relay which switches the low--ambient controller out of
the outdoor fan motor circuit when the heat pump switches to
heating mode.
7. Liquid--Line Solenoid Valve (LLS)
An electrically operated shutoff valve which stops and starts
refrigerant liquid flow in response to compressor operation. It is to
be installed at the outdoor unit to control refrigerant off cycle
migration in the heating mode.
8. Low--Ambient Pressure Switch Kit
A long life pressure switch which is mounted to outdoor unit
service valve. It is designed to cycle the outdoor fan motor in order
to maintain head pressure within normal operating limits. The
control will maintain working head pressure at low--ambient
temperatures down to 0_F(--18_C) when properly installed.
9. MotorMasterr Low--Ambient Controller
A fan--speed control device activated by a temperature sensor,
designed to control condenser fan motor speed in response to the
saturated, condensing temperature during operation in cooling
mode only. For outdoor temperatures down to --20_F (--28.9_C), it
maintains condensing temperature at 100_F 10_F (37.8_C
6.5_C).
REQUIRED FOR
LONG LINE APPLICATIONS*
Ye s
SEA COAST APPLICATIONS
(Within 2 miles / 3.22 km)
Usage Guideline:
Required in all heat pumps where low ambient kit has
been added.
Usage Guideline:
An LLS is required in all long line heat pump
applications to control refrigerant off cycle migration in
the heating mode. See Long Line Guideline.
Usage Guideline:
A Low--Ambient Pressure Switch or MotorMasterr
Low--Ambient Controller must be used when cooling
operation is used at outdoor temperatures below 55_F
(12.8_C).
Usage Guideline:
A MotorMasterr
Low Ambient Controller or
Low--Ambient Pressure Switch must be used when
cooling operation is used at outdoor temperatures
below 55_F (12.8_C).
Suggested for all commercial applications.
REQUIRED FOR
No
6
Accessory Description and Usage (Listed Alphabetically) -- CONTINUED
10. Outdoor Air Temperature Sensor
Designed for use with Carrier Thermostats listed in this
publication. This device enables the thermostat to display the
outdoor temperature. This device also is required to enable special
thermostat features such as auxiliary heat lock out.
Usage Guideline:
Suggested for all Carrier thermostats listed in this
publication.
11. Outdoor Thermostat
AnSPDTtemperature--actuatedswitchwhichturns on
supplemental electric heaters when outdoor air temperature drops
below a user--selected set point.
Usage Guideline:
Electric supplemental heat applications in non--variable
speed indoor units when electric heat staging is desired.
12. Secondary Outdoor Thermostat
An SPDT temperature--actuated switch which turns on third--stage
of supplemental electric heaters when outdoor air temperature
drops below the second--stage set point.
Usage Guideline:
Outdoor thermostat applications where electric heater is
capable of 3--stage operation.
13. Snow Stand Rack
Coated wire rack which supports unit 18 in. (457.2 mm) above
mounting pad to allow for drainage from unit base.
Usage Guideline:
Suggested in the following applications:
Heat pump installations in heavy snowfall areas.
Heat pump installations in snow drift locations.
Heat pump installations in areas of prolonged
subfreezing temperatures.
All commercial installations.
14. Sound Hood
Wraparound sound reducing cover for the compressor. Reduces the
sound level by about 2 dBA.
Usage Guideline:
Suggested when unit is installed closer than 15 ft.
(4.577 m) to quiet areas, bedrooms, etc.
Suggested when unit is installed between two houses less
than 10 ft. (3.05 m) apart.
15. Thermostatic Expansion Valve (TXV) Bi --Flow
A modulating flow--control valve which meters refrigerant liquid
flow rate into the evaporator in response to the superheat of the
refrigerant gas leaving the evaporator.
Usage Guideline:
Accessory required to meet AHRI rating and system
reliability, where indoor not equipped.
Required in all heat pump applications designed with
Puron refrigerant.
16. Time--Delay Relay
An SPST delay relay which briefly continues operation of indoor
blower motor to provide additional cooling after the compressor
cycles off.
Note: Most indoor unit controls include this feature. For those that
do not, use the guideline below.
Usage Guideline:
Accessory required to meet AHRI rating, where indoor
*Permissible limits of the voltage range at which the unit will operate satisfactorily
{ If wire is applied at ambient greater than 30_C , co n s u l t t a ble 31 0 --- 1 6 of t h e N E C (N F P A 70 ) . T h e am p a c i t y of n o n --- m e t allic --- s h e a t h ed ca b l e (NM) ,
trade name ROMEX, shall be that of 60_C conditions, per the NEC (NFPA 70) Article 336--- 26. If other than uncoated (no ---plated), 60 or 75_C
insulation, copper wire (solid wire for 10 AWG or smaller, stranded wire for larger than 10 AWG) is used, consult applicable tables of the NEC (NFPA 70).
} Length shown is as measured 1 way along wire path between unit and service panel for voltage drop not to exceed 2%.
* * Ti m e --- D e l a y fu s e .
25HCD3
FLA --- Full Lo a d A m ps
LRA --- Lo c k e d Ro t o r A m ps
M C A ---Minimum Circuit Amps
RLA --- RatedLoadAmps
NOTE: Control circuit is 24---V on all units and requires external power source. Copper wire must be used from service disconnect to unit.
All motors/compressors contain internal overload protection.
Complies with 2007 requirements of ASHRAE Standards 90.1