Carrier 24VNA9 Infinity 19VS Manual de instrucciones

Application Guideline

24VNA9 Infinityr19VS Variable Speed Air Conditioner

with PuronrRefrigerant

The Infinity19VS variable speed air conditioner provides a flexible alternative to high‐priced

variable speed systems on the market today,as well as 2‐stage products currently being

offered.Its highly efficient,smaller and lighter design offers many benefits to dealers and

homeowners alike. This document outlines the recommended application parameters and

differences from other products.

Overview

The Infinity19VS is an inverter‐driven variable speed air conditioner designed for the

ducted residential market. Its size and weight advantage makes it easier for dealers to

handle and stock, and allows for high-efficiency installations in tighter spaces than previously

possible.It is designed to complement the dealer’s product offering by adding a new, unique

variable speed air conditioner to compete in this expanding market.

Benefits of Variable Speed

Variable speed systems provide several benefits to the homeowner. The capacity range of

the system allows it to more closely match the home’s needs as conditions change. This

increases indoor comfort by running longer comfort cycles at lower speeds thus eliminating

up and down temperature swings. Longer cycles at lower speeds also translate into higher

efficiency,and lower overall sound levels both indoors and outside. The wide capacity range

also improves zoning and dehumidification capability compared to 2‐stage and 1-stage

systems.

Comparison to Infinity®17 SEER 2-stage Air Conditioner Systems

With the introduction of the Infinity 19VS heat, you now have a variable speed option in

a straight-cool product. This new model offers several benefits compared to two-stage

systems. Below is a comparison of the new 19VS compared to the Infinity ® 17 two-

stage model:

Infinity 19VS with Touch Control

24VNA9

Infinity 17 two-stage

24ANB7

SEER

Up to 19

Up to 17

EER

Up to 12.5

Up to 13.3

Compressor

Type

Variable-speed Rotary

2-stage Scroll

Compressor

Stages

5 stages as low as 25%

2 stages as low as 70%

Line length

Up to 100ft equivalent length

Up to 250ft equivalent length

Fan motor

Compact ECM(Brushless DC)

No module attached

Inverter driven

Standard PSC

Ambient range

Cool: 40º-115ºF communicating

(4.4º-46.1ºC)

Cool: 55º-115ºF non-communicating

(12.8-46.1ºC)

Not initially qualified for Low

ambient cooling

Cool: 55º-125ºF (12.8º-51.7C)

Low ambient cooling capable

with Infinity Control or kit

Sound

56dBA –72 dBA

67dBA –72 dBA

Basepan sizes

2 and 3 ton - 23”x23”

4 and 5 ton –31.25” x 31.25”

2 ton - 31.25 x 31.25

3-5 ton - 35”x35”

AHRI Ratings

with

Infinity Communicating indoor for

full 5-stage functionality with Touch

Control

Infinity Communicating indoor

for 2-stage functionality with

Touch Control

Performance™2-stage indoor for 2-

stage functionality with 2-stage non-

communication thermostat

Performance™2-stage indoor

for 2-stage capability with 2-

stage non-communicating

thermostat

Infinity® 19VS System matching

This air conditioner unit provides the most customer benefit and highest efficiency when

installed as a complete Infinity system including Infinity Touch Control.

Acceptable system combinations will be listed in the AHRI and in My Carrier Ratings

database on HVACpartners.

For increased system flexibility, and increased replacement opportunities, this outdoor

unit is also designed to work with standard non-communicating thermostat inputs.

Combination ratings are available with some non-communicating 2-stage indoor units

such as the FV4C fan coil and 2-stage furnace/coil combinations. When utilizing this

type of indoor unit, a standard non-communicating 2-stage thermostat is required, and

the system will operate with 2-stage functionality.

Compatibility with existing indoor equipment (also see attached flowchart)

Because this unit is designed to work with communicating or standard thermostat

inputs, it opens up opportunities for replacement applications. However, the indoor

components must be of suitable size and configuration.

Existing Infinity communicating indoor equipment

The 19VS is backward compatible with all Infinity communicating indoor

equipment. However, the old style Infinity wall control is not compatible with the

19VS unit in communicating mode (See Figures 1 and 2). The software in the old

style control will not recognize the outdoor unit. For full system capability with

older indoor equipment, the wall control must be upgraded to the Infinity Touch

control with appropriate software.

Figure 1. Old style control Figure 2. Touch control

Check ratings for system matches with FE fan coil. These ratings can be applied

to old and new FE fan coils units.

Old style control

Not compatible with 19VS

Touch Control

Compatible with 19VS

For existing furnace applications, the furnace must have a suitable blower size.

Furnace coils built in 2006 or newer can be straight matched to the outdoor unit

tonnage or one size larger*. A Puron®refrigerant TXV is required on the furnace

coil. Furnace coils built between 2005 and 1992 may be straight matched, one or

two tonnage sizes larger than the outdoor unit tonnage*. A Puron refrigerant TXV

must be added to the indoor coil.

Existing 2-stage indoor equipment

The 19VS is capable of operating with a standard 2-stage thermostat and non-

communicating 2-stage indoor equipment. In this case, the outdoor unit will be

wired as a 2-stage system, and will operate as a 2-stage system. Combination

ratings will be available with some furnace/coil and FV4C fan coil combinations.

These ratings will apply to both new and existing equipment of like model

numbers.

An older FV4(A,B) of like size may be used. Unlike the 18VS heat pump, the

model plug in the outdoor unit does not need to be changed in straight-cool

applications.

An older FK or 40FK fan coil may be used with the addition of a Puron refrigerant

TXV. The model plug in the outdoor unit does not need to be changed in straight-

cool applications

For existing furnace applications with the 19VS, the furnace must have a suitable

blower size and staging capability. Furnace coils built in 2006 or newer may be

straight matched to the outdoor unit tonnage or one size larger*. A Puron

refrigerant TXV is required on the furnace coil. Furnace coils built between 2005

and 1992 may be straight matched, one or two sizes larger than the outdoor unit

tonnage*. A Puron refrigerant TXV must be added to the indoor coil.

* Examples

Straight matched to outdoor unit tonnage –3-ton 19VS unit with 3-ton furnace or fan coil

One size larger indoor –3-ton 19VS with 3.5 ton furnace or fan coil

2 sizes larger indoor –3-ton 19VS with older 4 ton furnace coil

Existing 1-stage indoor equipment

The 19VS will work with a 1-stage thermostat as a 1-stage system with suitable indoor

coil and fan until the indoor components can be upgraded to provide full variable speed

functionality.

If the indoor furnace coil was built in 2006 or after, it may be straight matched or one

size larger than the outdoor unit tonnage*. If the furnace coil was built between 2005

and 1992, the furnace coil may be straight matched, one or two sizes larger than the

outdoor unit tonnage*. A Puron®refrigerant TXV is required on the indoor coil.

In existing fan coil applications, if the unit was built in 2006 or after, it may be straight

matched or one size larger than the outdoor unit tonnage*. If the fan coil was built

between 2005 and 1992, it may be straight matched, or one size larger tonnage than

the outdoor unit tonnage*. A Puron refrigerant TXV is required on the indoor coil.

Line set limitations

The 19VS is qualified for line sets up to 100ft. equivalent length

Lift limitations:

Outdoor above indoor: 100 ft.

Outdoor below indoor:

2 ton

3 ton

4 ton

5 ton

80ft

70ft

60ft

See Product Data for line set diameter requirements

Sound

The 19VS uses a pressure equalizer valve (see Figure 3). It is designed to equalize

pressures across the rotary compressor in the off-cycle to ensure easier starting. During

the equalization process, a hissing sound may be heard by customers. This sound is

normal, but the customer should be made aware to avoid nuisance callbacks.

Figure 3. Pressure Equalizer Valve

*Examples

Straight matched to outdoor unit tonnage –3-ton 19VS unit with 3-ton furnace or fan coil

One size larger indoor –3-ton 19VS with 3.5 ton furnace or fan coil

2 sizes larger indoor –3-ton 19VS with older 4 ton furnace coil

EER Rating vs. Equipment payback

The published EER rating represents efficiency of cooling products at peak load, or 95ºF

(35ºC). This rating is driven by utility companies that are concerned with power

consumption at peak demand periods. In most locations, peak load is experience for a very

short time during a year (see charts below). The Infinity® 19VS system is designed for high

efficiency at lower load conditions, which represents the vast majority of the cooling season.

This is why the SEER ratings are high, but the EER is not as high on all sizes as other high-

efficiency products. Focusing on SEER allows the smaller unit design, and competitive price

compared to high EER variable speed products. Some incentives and local rebates contain

an EER requirement, while others do not.

A cost payback analysis should be done to compare benefit of a rebate with higher EER

component vs. initial cost and energy savings. Things to consider regarding rebates

containing EER requirements:

(Cost of qualifying EER equipment) –(rebate amount) = ______________

Cost of Infinity 19VS equipment = _____________

Yearly operating cost of qualifying EER equipment using Opcost calculator = __________

Yearly operating cost of 19VS equipment using Opcost calculator = _____________

(Difference in system cost) /( yearly operating cost of 19VS –yearly operating cost from

high EER equipment) = _____

The end number above represents number of years for payback of the additional

investment for equipment to achieve the rebate.

2.22% 0.18% 0.08%

27.00%

6.25%

0.72%

7.83%

1.22% 1.47% 0.42%

St Louis, MO Baltimore, MD Orlando, FL Phoenix, AZ Dallas Ft

Worth, TX

Minneapolis,

Sacramento,

Portland, OR Richmond, VA Atlanta, GA

Avg. Percent of Hours 95°F and Above

97.8% 99.8% 99.9%

73.0% 93.7% 99.3% 92.2% 98.8% 98.5%

St Louis, MO Baltimore, MD Orlando, FL Phoenix, AZ Dallas Ft Worth,

TX Minneapolis, MN Sacramento, CA Portland, OR Richmond, VA

Avg. Percent of Cooling Hours 70°to 90°F

Infinity®19VS Air Conditioner System Matching with Existing Indoor Equipment

Infinity® 19 VS AC

w/ Existing Indoor

System

Fan Coil or

Furnace?

Fan Coil

Furnace

2006-Present or

1992-2005?

Not Compatible

Before 1992

Multi-Stage or

Single Stage

Fan Coil?

Multi-Stage or

Single Stage

Fan Coil?

2006 –

Present

1992-

2005

VS, 2-Stage N.C.,

or Single Stage?

 Backward Compatible to any Infinity Capable furnace

 Infinity® Touch Required for Communicating

Operation

 Infinity® Touch SW Update may be required

 Full functionality with Infinity® Touch Control

 2-Stage Operation with 2-Stage Thermostat

 Check AHRI Ratings for current furnaces

 High Speed Airflow; 350-400 cfm/ton

 Low Speed Airflow; 70-80% of High Stage

 1-Stage Operation until Indoor can be upgraded

 1-Stage Operation with 1-Stage Thermostat

 Set airflow to 350-400 cfm/ton

Variable Speed

Communicating

2-Stage

Non-Communicating

Single

Stage

Indoor Coil

2006-Present or

1992-2005?

Not Compatible

Before 1992

2006 –

Present

1992-

2005

 See ratings for FV4C, FE matches

 5 stages with FE and Touch Control

 2 stages with FV and 2-stage stat

 Puron® refrigerant TXV required on indoor

 Straight Match or one

size larger than outdoor

tonnage

 Puron ® Refrigerant TXV

required

 Straight match, 1, or 2

sizes larger than

outdoor unit tonnage

 Puron ® Refrigerant

TXV required

Multi-Stage

Fan Coil

 One stage of operation with stat until indoor

can be upgraded

 Straight match or one size larger indoor

 Puron® refrigerant TXV required on indoor

 Wire as single stage unit.

 Set airflow to 350-400 cfm/ton

Single-Stage

Fan Coil

Multi-Stage

Fan Coil

Single-Stage

Fan Coil

 See ratings for FE matches

 Model plug change not required for FV4B/FK/

40FK indoor in cooling only applications

 FV/FK - match size same as current FV

 Puron® refrigerant TXV required on indoor

 2 stages with FV/FK and 2-stage stat

 One stage of operation until indoor can be upgraded

 Indoor straight matched or one size larger than

outdoor

 Puron® refrigerant TXV required on indoor

 Wire as single stage unit.

 Set airflow to 350-400 cfm/ton

* Examples

 Straight matched to outdoor unit tonnage –

3-ton 19VS with 3-ton furnace or fan coil

 1 size larger indoor –3-ton 19VS with

3.5 ton furnace or fan coil

 2 sizes larger indoor –3-ton 19VS with

older 4 ton furnace coil

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

Catalog No. 24VNA9---01AG

Replaces: New

Edition Date: 05/16

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