Carrier 25VNA Operation manual

Product Data
25VNA
InfinityrVariable Speed Heat Pump
with GreenspeedtIntelligence
2to5NominalTons
Carrier’s 25VNA with GreenspeedtIntelligence is a breakthrough
product providing up to 13 HSPF heating efficiency and up to 20.5
SEER cooling efficiency. The variable speed capacity control
results in strong heating capacity as the outdoor temperature drops
resulting in less reliance on auxiliary heat. Lower speed operation,
when needed in cooling, for enhanced comfort and
dehumidification.
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
S16.8 -- 20 SEER/11.4 -- 16 EER/10.3 -- 13.0 HSPF
SMicrotube Technologytrefrigeration system
SIndoor air quality accessories available
Sound
SSound level as low as 58 dBA in low speed (Silencer System II).
Comfort
SVariable speed compressor with capacity range from 40--100%
SAir cooled Inverter variable speed drive
— System requires Infinity Control with Greenspeed
capability (SYSTXCCUID01--V or SYSTXCCUIZ01--V
or newer)
Reliability
SPuronrrefrigerant -- environmentally sound, won’t deplete the
ozone layer and low lifetime service cost.
SFront--seating service valves
SGreenspeed Intelligence actively monitors critical system
parameters
SHigh pressure switch
SSuction pressure transducer
SElectronic expansion valve (EXV) for heating, TXV for cooling
SFilter drier (field installed)
SExternal Muffler (field installed)
SInternal crankcase heater standard
Flexibility and installation:
S2 control wires to outdoor unit
SMinimum and Maximum airflow adjustments
SCompressor Heating RPM control
SHybrid Heattdual fuel capable
Durability
WeatherArmor Ultratprotection package:
SSolid, Durable sheet metal construction
SSteel louver coil guard
SBaked--on, complete outer coverage, powder paint
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 V N A 0 36 A 0 0 3 0
Product
Series
Product
Family Tier Major Series SEER Cooling Capacity Variations Open Open Voltage Minor Series
25=HP V=VSHP N=
Infinity Series A = Puron 20= SEER 1,000 Btuh (nominal) A=Standard 0=Not Defined
0=Not
Defined 3=208/230---1 0, 1, 2...
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.
the environmentally sound refrigerant
STANDARD FEATURES
FEATURES
Unit Size --- Voltage, Series
24---30 36 ---30 48---30 60 ---30
Puron Refrigerant X X X X
Louvered Coil Guard X X X X
Field Installed Filter Drier / External Muffler X X X X
Front Seating Service Valves X X X X
Internal Pressure and Temperature Protection X X X X
Long Line capability X X X X
Suction Pressure Transducer 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
Deluxe Sound Blanket X X X X
Outdoor Air Temperature Sensor X X X X
X=Standard
25VNA

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
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
COOLING CAPACITY LOSS TABLE
Nominal
Size
(Btuh)
Line OD
(in.)
25VNA Cooling Capacity Loss (%)
Total Equivalent Line Length (ft)
25 50 75 80 100 125 150 175 200 225 250
24000
5/8 0.5 1.2 1.8 1.9 2.4 3.0 3.7 4.3 4.9 5.5 6.2
3/4 0.1 0.4 0.6 0.7 0.8 1.1 1.3 1.5 1.8 2.0 2.3
7/8 0.0 0.1 0.3 0.3 0.4 0.5 0.6 0.7 0.8 1.0 1.1
36000
5/8 1.1 2.4 3.7 4.0 5.0 6.3 7.7 9.0 10.3 11.6 12.9
3/4 0.3 0.8 1.3 1.4 1.8 2.3 2.8 3.2 3.7 4.2 4.7
7/8 0.0 0.3 0.5 0.6 0.8 1.0 1.3 1.5 1.8 2.0 2.3
48000
3/4 0.7 1.6 2.4 2.6 3.2 4.1 4.9 5.7 6.5 7.4 8.2
7/8 0.3 0.7 1.1 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.1
11/8 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
60000
3/4 1.0 2.3 3.5 3.8 4.8 6.0 7.3 8.5 9.8 11.0 12.3
7/8 0.4 1.0 1.7 1.8 2.3 2.9 3.5 4.2 4.8 5.4 6.0
11/8 0.0 0.1 0.3 0.4 0.5 0.7 0.8 1.0 1.2 1.4 1.5
Rating Line Size in Bold
TE Length Greater than 80 ft requires Long Line Accessory Liquid Line Solenoid
25VNA

4
EQUIPMENT SIZING GUIDELINES
If primary load is cooling, size the same as any other air conditioning system. If primary load is heating, use the chart below for maximum
size for heating.
MAXIMUM RECOMMENDED EQUIPMENT SIZE -- HEATING
COOLING LOAD (tons) MAXIMUM RECOMMENDED EQUIPMENT SIZE FOR HEATING*
236
2.5 36
348
3.5 60
460
560
* Make sure duct work is capable of delivering required airflow . Make sure combination rating exists for desired combination.
MIN/MAX AIRFLOW TABLES
The indoor airflow delivered by this system varies significantly
based on outdoor temperature, indoor unit combination, and
system demand. The airflows on these tables are for duct design
considerations. Duct systems capable of these ranges will ensure
the system will deliver full capacity at all outdoor temperatures.
Minimum and maximum airflows can be adjusted from these
numbers in the Infinity Control Heat Pump Setup screen.
Cooling --- Comfort Mode Minimum Cooling
(Dehum or Zoning)
Size Max Capacity Min Capacity
24 726 651 398
36 1168 651 398
48 1394 1186 693
60 1650 1186 693
Cooling --- Efficiency Mode
Size Max Capacity Min Capacity
24 949 830
36 1334 830
48 1593 1355
60 1885 1355
Heating --- Comfort Mode
Size Max Capacity Min Capacity
24 698 440
36 1140 451
48 1354 751
60 1354 751
Heating --- Efficiency Mode
Size Max Capacity Min Capacity
24 900 750
36 1350 750
48 1600 890
60 1750 901
25VNA

5
PHYSICAL DATA
UNIT SIZE SERIES 24 --- 30 36 --- 30 48 --- 30 60 --- 30
Operating Weight lb (kg) 324 (147) 324 (147) 334 (152) 334 (152)
Shipping Weight lb (kg) 367 (167) 367 (167) 375 (170) 375 (170)
Compressor Type Variable Speed Scroll
REFRIGERANT Puron®(R ---410A)
Control TXV (Puron®Hard Shutoff)
Charge lb (kg) 13.12 (5.95) 13.12 (5.95) 13.30 (6.03) 13.30 (6.03)
Outdoor Htg Exp. Device EXV EXV EXV EXV
COND FAN Forward Swept Propeller Type, Direct Drive
Air Discharge Vertical
Air Qty (CFM) 2700 4269 4350 5000
Motor HP 1/3 1/3 1/3 1/3
Motor RPM 500---900 500---900 500---900 500 ---900
COND COIL
Face Area (Sq ft) 30.25 30.25 30.25 30.25
Fins per In. 20 20 20 20
Rows 2 2 2 2
Circuits 8 8 9 9
VALVECONNECT.(In.ID)
Vapor 7/8 7/8 7/8 7/8
Liquid 3/8
REFRIGERANT TUBES (In. OD)
Rated Vapor* 7/8 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.
ACCESSORIES
KIT NUMBER KIT NAME 24---30 36---30 48---30 60---30
KHAEM0101EMI ELECTRO--- MAGNETIC INTERFERENCE
KIT X X X X
KHALS0401LLS SOLENOID VALVE X X X X
KHASS0606MPK* SNOW STAND X X X X
KSASF0101AAA SUPPORT FEET X X X X
KSATX0301PUR TXV X X
KSATX0401PUR TXV X
KSATX0501PUR TXV X
STANDARD CRANKCASE HEATER S S S S
x = Accessory S = Standard * Available from RCD
CONTROLS
SYSTXCCITN01 Infinity Touch Control (non---Wi---Fi)
SYSTXCCITW01 Infinity Touch Control with Wi--- Fi & Wireless Access Point
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.)
SYSTXX0LBP01 Decorative Back Plate for Infinity Control (Decorative wall plate.)
25VNA

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 No No
Liquid---Line Solenoid Valve No Yes No
Low--- Ambient Control Standard with Infinity Control 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 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 Greenspeed™ compatible fan coils and furnace coils.
Accessory Description and Usage (Listed Alphabetically)
1. Compressor Start Assist
The inverter drive gently starts the variable speed compressor at all
times. No other start device is compatible with this unit.
2. Crankcase Heater
Compressor motor winding resistance heater which is internal to
compressor to keep the lubricant warm during off cycles. Improves
compressor lubrication on restart and minimizes the chance of
liquid slugging.
Usage:
Used in low ambient cooling applications.
Used in long line 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. 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.
5. 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.
6. Electro--Magnetic Interference Kit
Usage Guideline:
May be required to address radio frequency interference
for equipment, such as HAM radios, operating between 6
and30mHz.
25VNA

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
24 16.5 2.9 23.5 12 12 52 (15.9) 50 (16.2) 30
36 --- 30 24 16.5 2.9 23.5 12 12 52 (15.9) 50 (16.2) 40
48 --- 30 42 27.0 2.9 36.6 8 8 84 (25.6) 80 (24.3) 50
60 --- 30 42 27.0 2.9 36.6 8 8 84 (25.6) 80 (24.3) 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 i t 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 p s
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 --- Voltage, Series
Typical Octave Band
Spectrum
(without tone adjust-
ment)
Min Speed
Cooling
Max Speed
Cooling
*Min Speed
Heating
*Max Speed
Heating
024 --- 30
Freq (Hz) 1800 RPM 3200 RPM 1800 RPM 5700 RPM
125 62.0 63.0 63.0 73.5
250 57.0 56.5 61.5 63.0
500 54.5 57.5 58.5 66.0
1000 52.0 58.0 54.5 63.5
2000 47.5 54.0 51.5 64.5
4000 44.5 48.0 48.0 59.5
8000 52.5 54.5 54.0 61.5
Sound Rating (dBA) 58 63 62 71
036 --- 30
Freq (Hz) 1800 RPM 4500 RPM 1800 RPM 6850**
125 62.0 64.5 63.0 67.0
250 57.0 60.5 61.5 67.5
500 54.5 61.0 58.5 69.0
1000 52.0 61.0 54.5 67.0
2000 47.5 56.0 51.5 67.0
4000 44.5 51.0 48.0 63.0
8000 52.5 54.5 54.0 61.5
Sound Rating (dBA) 58 65 62 75
048 --- 30
Freq (Hz) 1800 RPM 3450 RPM 1800 RPM 6300**
125 62.0 70.0 66.0 73.5
250 60.5 67.5 63.0 69.5
500 56.0 67.0 63.0 73.5
1000 59.0 63.0 58.0 72.0
2000 54.0 60.0 53.5 66.5
4000 52.5 56.0 50.0 65.5
8000 58.5 58.5 57.0 63.0
Sound Rating (dBA) 65 70 64 76
060 --- 30
Freq (Hz) 1800 RPM 4250 RPM 1800 RPM 6300**
50 62.0 65.0 66.0 73.5
100 60.5 67.5 63.0 69.5
200 56.0 67.5 63.0 73.5
400 59.0 66.5 58.0 72.0
800 54.0 61.0 53.5 66.5
1600 52.5 60.5 50.0 65.5
3150 58.5 59.0 57.0 63.0
Sound Rating (dBA) 65 72 64 76
NOTE: Tested in compliance with AHRI 270---2008 but not listed with AHRI.
* 024 & 036 tested at 44_F Outdoor Air Temperature. 048 & 060 tested at 40_F
**Testable RPM limited by outdoor temp. Max unit RPM is 6500 for the 4 ton and 7000 for the 3 and 5 ton.
CHARGING SUBCOOLING (TXV--TYPE EXPANSION DEVICE)
UNIT SIZE --- VOLTAGE, SERIES REQUIRED SUBCOOLING _F(_C ) --- S e e U I
24 --- 30
Subcooling recommendation displayed on UI in Charging Mode must be followed
36 --- 30
48 --- 30
60 --- 30
25VNA

8
DIMENSIONS -- ENGLISH
25VNA

9
DIMENSIONS -- SI
25VNA

10
25VNA BALANCE POINT WORKSHEET
0.00 5.00
10.00 15.00 20.00 25.00 30.00 35.00
-10 0 10 20 30 40 50 60 70 80
BUILDING HEAT LOSS, UNIT INTEGRATED HEATING CAPACITY, MBTUH
OUTDOOR TEMPERATURE F (C)
25VNA024 BALANCE POINT WORK SHEET
(MINIMUM & MAXIMUM HEATING CAPACITIES)
Minimum Capacies
Maximum Capacies
0.00
2.9
5.9
8.8
(-23.3)
(-17.8)
(-12.2)
(-6.7)
(-1.1)
(4.4)
(10)
(15.6)
(21.1)
(26.7)
KW
BASED ON INDOOR ENT. AIR AT 70°F (21.1°C )
25VNA