Carrier Infinity 25HNB6 Operation manual

Product Data
25HNB6
Infinityt1 6 2 --- S t a g e H e a t P u m p
with PuronrRefrigerant
2to5NominalTons
Carrier’s heat pumps with Puronrrefrigerant provide a collection
of features unmatched by any other family of equipment. The
25HNB6 has been designed utilizing Carrier’s Puron 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
Starrcriteria for energy efficiency when matched with appropriate
coil components. Refer to the combination ratings in the Product
Data for system combinations that meet Energy Starrguidelines.
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
Energy Efficiency
S13.5 -- 17.2 SEER/11.0 -- 13.5 EER/8.0 -- 9.6 HSPF
SMicrotube Technologytrefrigeration system
SIndoor air quality accessories available
Sound
SSound level as low as 67 dBA
SQuiet mount split post compressor grommets
SForward--swept condenser fan blade
SCompressor sound hood
SLaminated steel compressor mounting plate
S8 pole PSC ball bearing outdoor condenser fan motor
Comfort
SSystem supports Infinity Controltor standard 2--stage
thermostat controls
Reliability
SPuronrrefrigerant -- environmentally sound, won’t deplete the
ozone layer and low lifetime service cost.
SFront--seating service valves
S2--stage scroll compressor
SInternal pressure relief valve
SInternal thermal overload
SHigh pressure switch
SLoss of charge switch
SFilter drier
SBalanced refrigeration system for maximum reliability
SCrankcase heater standard
Durability
WeatherArmortprotection package:
SSolid, Durable sheet metal construction
SSteel louver coil guard
SBaked--on, complete outer coverage, powder paint
Controls and Diagnostics
SInfinitytControl or Thermostat
SUtility Interface Connection
SUp to 83 point diagnostic capability with InfinitytControl
Applications
SLong--line -- up to 250 feet (76.2 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.)

2
MODEL NUMBER NOMENCLATURE
12 3 4 5 6 78 9 10 11 12 13
N N A A A/N N N N A/N A/N A/N N N
25 H N B 6 36 A 0 0 3 0
Product
Series
Product
Family Tier Major Series SEER Cooling Capacity Variations Open Open Voltage Minor Series
25=HP H=RESHP N=
Infinity Series B = Puron 6=16 SEER 1,000 Btuh (nominal) A=Standard 0=Not Defined
0=Not
Defined 3=208/230---1 0, 1, 2...
the environmentally sound refrigerant
This product has been designed and manufactured to
meet Energy Star®criteria for energy efficiency when
matched with appropriate coil components. However,
proper refrigerant 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.
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.
This product has been designed and manufactured to
meet Energy Star®criteria for energy efficiency when
matched with appropriate coil components. However,
proper refrigerant 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.
STANDARD FEATURES
FEATURES
Unit Size --- Voltage, Series
24---30 36---30 48---30 60---30
Puron Refrigerant X X X X
Maximum SEER Rating* 16.5 17.2 16.4 15.8
2---Stage Scroll Compressor X X X X
Louvered Coil Guard X X X X
FieldInstalledFilterDrier X X X X
Front Seating Service Valves X X X X
Internal Pressure Relief Valve X X X X
Long Line capability X X X X
Loss of Charge Switch X X X X
High Pressure Switch X X X X
Crankcase Heater X X X X
Low ambient cooling down to 0_F capability
with Infinity Control X X X X
Utility Interface Connections X X X X
Enhanced Diagnostics with Infinity Control X X X X
Sound Blanket X X X X
X=Standard
* With approved combinations

3
PHYSICAL DATA
UNIT SIZE SERIES 24 --- 30 36 --- 30 48 --- 30 60 --- 30
Operating Weight lb (kg) 314 (142) 316 (143) 316 (143) 372 (169)
Shipping Weight lb (kg) 358 (162) 360 (163) 360 (163) 417 (189)
Compressor Type UltratechrScroll
REFRIGERANT Puron®(R---410A)
Control TXV (Puron®Hard Shutoff)
Charge lb (kg) 14.0 (6.35) 14.10 (6.40) 14.25 (6.46) 15.45 (7.01)
Outdoor Htg Piston # 46 57 61 67
COND FAN Forward Swept Propeller Type, Direct Drive
Air Discharge Vertical
Air Qty (CFM) 3200 3900 4350 5000
Motor HP 1/12 1/8 1/4 1/4
Motor RPM 800 800 800 800
COND COIL
Face Area (Sq ft) 25.15 25.15 25.15 30.18
Fins per In. 20 20 20 20
Rows 2 2 2 2
Circuits 88810
VALVECONNECT.(In.ID)
Vapor 3/4 7/8 7/8 7/8
Liquid 3/8
REFRIGERANT TUBES (In. OD)
Rated Vapor* 3/4 7/8 1 --- 1 / 8 1 --- 1 / 8
Max Liquid Line 3/8
* 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.
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 AC systems with Puron refrigerant:
Unit
Nominal
Size
(Btuh)
Maximum
Liquid Line
Diameters
(In. OD)
Vapor Line
Diameters
(In.) OD
Cooling Capacity Loss (%)
Total Equivalent Line Length ft. (m)
Standard
Application Long Line Application Requires Accessories
26 --- 50
(7.9--- 15.2)
51 --- 80
(15.5--- 24.4)
81 --- 100
(24.7--- 30.5)
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)
24,000
2 --- S t a g e
HP with
Puron
3/8
5/8 0 1 1 2 3 3 4 4 5
3/4 0 1 1 1 1 1 1 1 1
36,000
2 --- S t a g e
HP with
Puron
3/8
5/8 1 2 4 5 6 7 9 10 11
3/4 0 0 1 1 2 2 3 3 4
7/8 0 0 — — — — — — —
48,000
2 --- S t a g e
HP with
Puron
3/8
3/4 1 2 2 3 4 5 6 7 7
7/8 0 1 1 2 2 2 3 3 4
1 --- 1 / 8 0 0 — — — — — — —
60,000
2 --- S t a g e
HP with
Puron
3/8
3/4 1 2 4 5 6 8 9 10 11
7/8 0 1 2 2 3 4 4 5 5
1 --- 1 / 8 0 0 — — — — — — —
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.
— Applications in this area are not recommended due to insuficient oil return.
25HNB6

4
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
ft (m)
MAXIMUM EQUIVALENT LENGTH{
ft (m)
MAXIMUM VERTICAL SEPARA-
TION ft (m)
Units on equal level 200 (61) 250 (76.2) N/A
Outdoor unit ABOVE
indoor unit 200 (61) 250 (76.2) 200 (61)
Outdoor unit BELOW
indoor unit See Table ’Maximum Total Equivalent Length: Outdoor Unit BELOW Indoor Unit’
{Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
Maximum Total Equivalent Length{-- Outdoor Unit BELOW Indoor Unit
Size
Liquid Line
Diameter
w/ TXV
HP with PuronrRefrigerant --- Maximum Total Equivalent Length{
Vertical Separation ft (m) Outdoor unit BELOW indoor unit;
0 --- 2 0
(0 --- 6.1)
21 --- 30
(6.4 --- 9.1)
31 --- 40
(9.4 --- 12.2)
41 --- 50
(12.5 --- 15.2)
51 --- 60
(15.5 --- 18.3)
61 --- 70
(18.6 --- 21.3)
71 --- 80
(21.6 --- 24.4)
024
HP with
Puron
3/8 250* 250* 250* 250* 250* 250* 250*
036
HP with
Puron
3//8 250* 250* 250* 250* 250* 250* 250*
048
HP with
Puron
3/8 250* 250* 250* 250* 230 160 --- ---
060
HP with
Puron
3/8 250* 225* 190 150 110 --- --- --- ---
* 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 d e a c c e p t a b l e r a n g e
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 PURONrREFRIGERANT LONG LINE DESCRIPTION ft (m)
Beyond these lengths, long line accessories are required
Liquid Line Size Units On Same Level Outdoor Below Indoor Outdoor Above Indoor
3/8 80 (24.4) 20 (6.1) vertical or 80 (24.4) total 80 (24.4)
Note: SeeLongLineGuidelinefordetails
25HNB6

5
ACCESSORIES
KIT NUMBER KIT NAME 24 --- 30 36 --- 30 48--- 30 60 --- 30
KHALS0401LLS SOLENOID VALVE X X X X
KHASS0606MPK* SNOW STAND X X X X
KSAHS2301AAA HARD START KIT X
KSAHS2401AAA HARD START KIT X
KSAHS2501AAA HARD START KIT X
KSAHS2601AAA HARD START KIT X
KSASF0101AAA SUPPORT FEET X X X X
KSATX0201PUR TXV X
KSATX0301PUR TXV X
KSATX0401PUR TXV X
KSATX0501PUR TXV X
x = Accessory S = Standard * Available from RCD
ACCESSORY CONTROLS
PART NO. DESCRIPTION
SYSTXCCUID01-V Infinity Control Deluxe 7-Day Programmable (Wall-mounted system control.)
SYSTXCCUIZ01-V Infinity Control Deluxe Zoning 7-Day Programmable (Wall-mounted control for a multi-zone system.)
SYSTXCC4ZC01 Infinity 4-Zone Damper Control Module (Wall-mounted control for a four-zone system.)
SYSTXCCSMS01 Infinity Smart Sensor (Optional wall control used to monitor temperature and/or fan control in an individual zone.)
SYSTXCCRRS01 Infinity Remote Room Sensor (Monitors temperature in an individual zone.)
SYSTXCCRCT01 or
SYSTXCCRWF01 Infinity System Access Module (Hardware for wireless access and control via internet.)
SYSTXCCNIM01 Infinity Network Interface Module (Connects Heat Recovery and Energy Recovery Ventilators on Non-zoning applications.)
SYSTXXXBPU01 Decorative Back Plate for Infinity Control (Decorative wall plate.)
25HNB6

6
ACCESSORY USAGE GUIDELINE
ACCESSORY
REQUIRED FOR
LOW--- AMBIENT COOLING APPLICA-
TIONS
(Below 55°F/12.8_C)
REQUIRED FOR LONG LINE AP-
PLICATIONS*
(Over 80 ft/24.38 m)
REQUIRED FOR SEA COAST
APPLICATIONS (Within 2
miles/3.22 km)
Crankcase Heater Standard Standard Standard
Evaporator Freeze Protection
Standard with InfinitytControl
(Low Ambient not allowed with non ---
communicating thermostat)
No No
Liquid---Line Solenoid Valve No Yes No
Low--- Ambient Control
Standard with Infinity Control (Low am-
bient not allowed with non ---communic-
ating thermostat)
No No
Puron Refrigerant Balance Port Hard ---
ShutOff TXV Ye s {Ye s{Ye s {
Support Feet Recommended No Recommended
Winter Start Control
Standard with Infinity Control
(Low Ambient not allowed with non ---
communicating thermostat)
No No
* For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (total equivalent length), refer to the Long
Line Guideline—Air Conditioners and Heat Pumps using Puron®Refrigerant.
{Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Accessory Description and Usage (Listed Alphabetically)
1. Compressor Start Assist -- Capacitor and Relay
Start capacitor and relay gives a “hard” boost to compressor motor
at each start up.
Usage Guideline:
Available if required by local codes.
2. 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.
3. 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.
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.
Suggested for all commercial applications.
4. 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.
5. Snow Stand
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.
6. 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 ARI rating and system
reliability, where indoor not equipped.
Required in all heat pump applications designed with
Puron refrigerant.
25HNB6

7
ELECTRICAL DATA
UNIT
S I Z E ---
VOLTAGE,
SERIES
V/PH
OPER VOLTS* COMPR FAN
MCA
MIN
WIRE
SIZE{
MIN
WIRE
SIZE{
MAX
LENGTH
ft (m)}
MAX
LENGTH
ft (m)}
MAX
FUSE**
or CKT
BRK
AMPS
MAX MIN LRA RLA FLA 60°C75°C60°C75°C
24 --- 30
208/230/1 253 197
52.0 12.7 0.6 16.5 14 14 48 (14.6) 45 (13.7) 25
36 --- 30 82.0 16.7 0.9 21.8 12 12 57 (17.4) 55 (16.8) 35
48 --- 30 96.0 26.9 1.3 34.9 810 89 (27.1) 54 (16.5) 50
60 --- 30 118.0 23.0 1.4 30.2 810 103 (31.4) 63 (19.2) 50
* Permissible limits of the voltage range at which the unit will operate satisfactorily
{If wire is applied at ambient greater than 30_C , c o n s u l t t a b l e 3 1 0 --- 1 6 o f t h e N E C ( N F PA 7 0 ) . T h e a m p a c it y o f n o n --- m e t a l l i c --- s h e a t h e d c a b l e ( N M ) ,
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%.
* * T i m e --- D e l a y f u s e .
FLA --- Fu l l L o a d A m p s
LRA --- L o c k e d R o 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 2010 requirements of ASHRAE Standards 90.1
SOUND POWER LEVEL (dBA)
Unit Size
--- V o l t a g e ,
Series
Standard Rating dBA
TYPICAL OCTAVE BAND SPECTRUM (dBA, without tone adjustment)
125 250 500 1000 2000 4000 8000
24 6 8 --- H i g h S t a g e 53.0 55.0 59.0 62.0 59.5 58.0 53.5
6 7 --- L o w S t a g e 52.0 56.0 59.5 60.5 61.0 58.0 49.0
36 7 1 --- H i g h S t a g e 53.0 59.0 62.0 64.0 60.0 58.5 50.5
7 1 --- L o w S t a g e 53.4 60.0 63.0 65.5 61.5 58.0 49.0
48 7 0 --- H i g h S t a g e 54.5 61.5 63.5 64.5 61.0 57.5 52.0
7 0 --- L o w S t a g e 55.5 61.0 64.5 64.0 61.0 57.0 49.5
60 7 2 --- H i g h S t a g e 53.5 62.0 66.0 66.5 61.5 58.0 52.0
7 2 --- L o w S t a g e 54.0 62.0 66.5 67.0 60.5 57.5 51.0
NOTE: Tested in compliance with ARI 270 ---2008 but not listed with AHRI.
CHARGING SUBCOOLING (TXV--TYPE EXPANSION DEVICE)
UNIT SIZE --- VOLTAGE, SERIES REQUIRED SUBCOOLING _F(_C)
24 --- 30 9.0 (5.0)
36 --- 30 12.0 (6.7)
48 --- 30 12.0 (6.7)
60 --- 30 11.0 (6.1)
25HNB6

8
DIMENSIONS -- ENGLISH
25HNB6

9
DIMENSIONS -- SI
25HNB6

10
25HNB6 BALANCE POINT WORKSHEET -- HIGH STAGE
0
10 20 30 40 50 60 70 80
-10 (-23.3) 0 (-17.8) 10 (-12.2) 20 (-6.7) 30 (-1.1) 40 (4.4) 50 (10.0) 60 (15.6) 70 (21.1) 80 (26.7)
BUILDING HEAT LOSS, UNIT INTEGRATED
HEATING CAPACITY, MBTUH
OUTDOOR TEMPERATURE, ºF( ºC)
25HNB660
FV4CNB006
BASED ON INDOOR ENT. AIR AT 70ºF 21.1ºC AND AT RATED CFM
25HNB648
FV4CNB005
25HNB636
FV4CNB006
25HNB624
FV4CNF002
25HNB6