Bryant 288BNV EVOLUTION V, FE4ANB006, 189BNV EVOLUTION Installation Instructions Manual

288BNV EVOLUTIONRV
VARIABLE SPEED HEAT PUMP
WITH PURONr REFRIGERANT

Installation Instructions

NOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTS

PAGE NO.

SAFETY CONSIDERATIONS 2......................................................................

INSTALLATION RECOMMENDATIONS 2............................................................

INSTALLATION 3..................................................................................

Step 1 — Check Equipment and Job site 3..........................................................

Step 2 — Install on Solid, Level Mounting Pad 3....................................................

Step 3 — Clearance Requirements 3...............................................................

Step 4 — Operating Ambient 4..................................................................

Step 5 — Elevate Unit 4........................................................................

Step 6 — Making Piping Connections 4............................................................

Step 7 — Make Electrical Connections 4...........................................................

Step 8 — Compressor Internal Crankcase Heater 8...................................................

Step 9 — Install Accessories 8...................................................................

Step 10 — Start--Up 8..........................................................................

Step 11 — System Functions and Sequence of Operation 10.............................................

Step 12 — Check Charge 11......................................................................

Step 13 — Pumpdown & Evacuation 16.............................................................

MAJOR COMPONENTS 17...........................................................................

TROUBLESHOOTING 18.............................................................................

FINAL CHECKS 23..................................................................................

CARE AND MAINTENANCE 23.......................................................................

PURONr REFRIGERANT QUICK REFERENCE GUIDE 23...............................................

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

Replaces: II288B ---02

Information in these installation instructions pertains only to
288BNV series units.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
current editions of the National Electrical Code ( NEC ) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.

!

Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety--alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which wo uld result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.

!

CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.

!

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal injury
or equipment damage.

PuronR refrigerant systems operate at higher pressures than
standard R--22 systems. Do not use R--22 service equipment
or components on PuronR refrigerant equipment.

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal
injury or death.

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

WARNING

!

Indoor Thermostat Control Options

Model

288BNV Yes* Yes* *

* Requires model SYSTXBBECC01, SYSTXBBECW01 or SYSTXBBECN01

with version 11 software or newer..

** Using standard HP thermostat limits functionality of system

ELECTRICAL HAZARD -- HIGH VOLTAGE!

Failure to follow this warning could result in personal injury
or death.

Electrical components may hold charge. DO NOT remove
control box cover for 2 minutes after power has been
removed from unit.

PRIOR TO TOUCHING ELECTRICAL COMPONENTS:

Verify zero (0) voltage at inverter connections shown on
inverter cover.

Evolutionr Connex™

Control

!

WARNING

!

WARNING

EXPLOSION HAZARD

Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.

Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.

Standard HP

Thermostat

Inverter Cover

IMPORTANT: The inverter cover should NEVER be removed

because there is no reason to remove the inverter cover to access
the inverter. The inverter has limited serviceability. Refer to
Service Manual for details on field replaceable parts. A
replacement cover is provided with a replacement inverter.

INSTALLATION RECOMMENDA TIONS

In some cases noise in the living area has been traced to gas
pulsations from improper installation of equipment.

1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.

2. In noise sensitive applications (such as bedrooms), when a
lineset is mounted to ceiling joists or floor joists, the out­door unit must be located at least 10 ft (3.05 m) away. If
this is not possible, create a line set configuration with
enough bends to provide 10 ft (3.05 m) of total line set
length outside the dwelling

3. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.

4. Run refrigerant tubes as directly as possible by avoiding un­necessary turns and bends.

5. Leave some slack between structure and unit to absorb vi­bration.

6. When passing refrigerant tubes through the wall, seal open­ing with RTV or other pliable silicon--based caulk (see Fig.

1).

7. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.

Catalog No: II288B ---03

2

Replaces: II288B ---02

8. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with tub­ing (see Fig. 1).

9. Ensure that tubing insulation is pliable and completely sur­rounds vapor tube.

10. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 1.)

11. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.

12. If these installation recommendations were not followed,
gas pulsation may be transmitted through improperly
mounted line sets. In this case, an external vapor line muf­fler accessory (part no. LM10KK003) is available to mini­mize noise due to gas pulsations.

!

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

If proper lineset routing techniques are not followed, variable
speed systems can be susceptible to lineset transmitted noise
inside the dwelling and, in extreme cases, tubing breakage.

OUTDOOR WALL INDOOR WALL

CAULK

INSULATION

HANGER STRAP

(AROUND SUCTION

TUBE ONLY)

1” (25.4 mm)

MIN

THROUGH THE WALL

SUSPENSION

LIQUID TUBE

SUCTION TUBE

JOIST

INSULATION

SUCTION TUBE

LIQUID TUBE

A07588

Fig. 1 -- Connecting Tubing Installation

The outdoor unit contains the correct amount of refrigerant charge
for operation with AHRI rated indoor units when connected by 15
ft (4.57 m) of field--supplied or factory accessory tubing.

Adjust refrigerant charge by adding or removing the charge
to/from the unit depending on lineset length and indoor unit as
calculated and displayed on the UI. The user interface (UI)
calculates required charge adjustment and total system charge
required. For proper unit operation, check refrigerant charge using
charging information in the Check Charge section of this
instruction.

IMPORTANT: Liquid--line size is 3/8--in. OD for all 288BNV
applications. The maximum allowable equivalent line set length is
100 ft. (30.5 m).

IMPORTANT: Always install the factory--supplied liquid-- line
filter drier. Obtain replacement filter driers from your distributor or
branch.

INSTALLATION

Specifications for this unit in residential new construction market
require the outdoor unit, indoor unit (including metering device),
refrigerant tubing sets, and filter drier listed in pre--sale literature.
There can be no deviation. Consult the Service Manual – Air
Conditioners and Heat Pumps Using Puron Refrigerant to obtain
required unit changes for specific applications and for R--22
retrofit.

Step 1 — Check Equipment and Job Site

Unpack Unit

Move to final location. Remove carton taking care not to damage
unit.

Inspect Equipment

File claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit rating plate on unit corner
panel. It contains information needed to properly install unit.
Check rating plate to be sure unit matches job specifications.

Step 2 — Install on a Solid, Level Mounting Pad

If conditions or local codes require the unit be attached to pad, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern in Fig. 2
to determine base pan size and knockout hole location.

For hurricane tie downs, contact distributor for details and PE
(Professional Engineer) Certification, if required.

On rooftop applications, mount on level platform or frame. Place
unit above a load--bearing wall and isolate unit and tubing set from
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes governing rooftop applications.

Roof mounted units exposed to winds above 5 mph may require
wind baffles. Consult the Service Manual -- Residential Split
System Air Conditioners and Heat Pumps Using Puron
Refrigerant for wind baffle construction.

NOTE: Unit must be level to within 2 (3/8 in./ft,9.5 mm/m.)
per compressor manufacturer specifications.

Step 3 — Clearance Requirements

When installing, allow sufficient space for airflow clearance,
wiring, refrigerant piping, and service. Allow 24 in. (609.6 mm)
clearance to service end of unit and 48 in. (1219.2 mm) (above
unit. For proper airflow, a 6--in. (152.4 mm) clearance on 1 side of
unit and 12--in. (304.8 mm) on all remaining sides must be
maintained. Maintain a distance of 24 in. (609.6 mm) between
units. Position so water, snow, or ice from roof or eaves cannot fall
directly on unit.

On rooftop applications, locate unit at least 6 in. (152.4 mm) above
roof surface.

3/8---in. (9.53 mm) Dia.
Tie---down Knockouts in
Basepan(2) Places

UNIT BASE PAN

Dimension in. (mm)

23 X 23

(596 X 596)

31.2 X 31.2
(792 X 792)

Fig. 2 -- Tie--down Knockout Locations

View From Top

TIEDOWN KNOCKOUT LOCATIONS in. (mm)

A B C

7--- 13/16 (198) 4 ---7/16 (102) 18--- 1/8 (458)

9--- 1/8 (232) 6--- 9/16 (167) 24--- 11/16 (627)

A05177

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

3

Replaces: II288B ---02

Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)

UNIT SIZE

288BNV024B* 3/8 3/8 3/4 3/4 5/8

288BNV024A*, 288BNV025 3/8 3/8 3/4 7/8 5/8

288BNV036 3/8 3/8 3/4 7/8 5/8

288BNV048 3/8 3/8 7/8 (1--- 1/8) 3/4

* *24A unit height is 38---7/16”, 24B unit height is 31---5/8
{ Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length line sets.
Notes:

1. Do not apply capillary tube indoor coils to these units.

288BNV060 3/8 3/8 7/8 (1--- 1/8) 3/4

Connection

Diameter

LIQUID VAPOR

Tub e

Diameter

Connection

Diameter

Max (Rated)

†

Diameter

Step 4 — Operating Ambient

The minimum outdoor operating ambient in cooling mode is 40_F
(4.4_C) with Evolutionr Connext Control, 55_F (12.8_C) with
non--communicating systems. The maximum outdoor operating
ambient in cooling mode is 115_F (46.1_C). Compressor
protections will prevent cooling mode operation below minimum
ambient temperature range. The system may operate in cooling up
to 125_F(52_C) (52C) with significant reduced capacity cutback
above 115_F (46.1_C). Refer to Product Data “Detailed Cooling
Capacity” table. Low ambient cooling operation is not currently
available. The maximum heating operation ambient is 66_F
(18.9_C). Compressor protections will prevent starting below 10_F
(--12.2_C) and operation below 2_F (--16.7_C).

Step 5 — Elevate Unit

Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of unit.

!

UNIT OPERATION HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Do not allow water and/or ice to build up in base pan.

!

UNIT OPERATION HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Locate the unit in such a way that it is stable in all
circumstances including adverse weather conditions.

CAUTION

CAUTION

Step 6 — Make Piping Connections

!

PERSONAL INJURY AND UNIT DAMAGE
HAZARD

Failure to follow this warning could result in personal injury or
death.

Relieve pressure and recover all refrigerant before system
repair or final unit disposal. Use all service ports and open all
flow--control devices, including solenoid valves.

WARNING

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Do not leave system open to atmosphere any longer than
minimum required for installation. POE oil in compressor is
extremely susceptible to moisture absorption. Always keep
ends of tubing sealed during installation.

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

If ANY refrigerant tubing is buried, provide a 6 in. (152.4
mm) vertical rise at service valve. Refrigerant tubing lengths
up to 36 in. (914.4 mm) may be buried without further
special consideration. Do not bury lines longer than 36 in.
(914.4 mm).

Outdoor units may be connected to indoor section using accessory
tubing package or field--supplied refrigerant grade tubing of correct
size and condition. For tubing requirements between 80 -- 100 ft.
(24.38 -- 30.48 m), capacity and performance losses can occur.
Follow the pipe sizing recommendations in the 288BNV Product
data to manage these losses. This unit shall not be installed with
greater than 100 ft (30.48 m) of equivalent line length.

Refer to Table 1 for field tubing diameters. No additional
accessories are required for line lengths between 80 -- 100 ft. (24.4

-- 30.5 m) on this product.

Outdoor Unit Connected to Factory--Approved Indoor
Unit

Outdoor unit contains correct system refrigerant charge for
operation with factory--approved, AHRI--rated indoor units when
connected by 15 ft. (4.57 m) of field--supplied or factory--accessory
tubing, and factory --supplied filter drier. Check refrigerant charge
for maximum efficiency.

NOTE: If the indoor furnace coil width is more than the furnace
casing width, refer to the indoor coil Installation Instructions for
transition requirements.

Install Liquid--Line Filter Drier Indoor

Refer to Fig. 3 and install filter drier as follows:

1. Braze 5-- in. (127 mm) liquid tube to the indoor coil.

2. Wrap filter drier with damp cloth.

3. Braze filter drier to above 5--in. (127 mm) liquid tube.

4. Connect and braze liquid refrigerant tube to the filter drier.

CAUTION

CAUTION

Minimum

Tube Diameter

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

4

Replaces: II288B ---02

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in unit damage or
improper operation.

Installation of filter drier in liquid line is required.

CAUTION

triple evacuation method may be used. See Service Manual for
triple evacuation method. Always break a vacuum with dry
nitrogen prior to opening the refrigerant system for servicing.

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gauge capable of
accurately measuring this vacuum depth. The deep vacuum method
is the most positive way of assuring a system is free of air and
liquid water. (See Fig. 4)

5000

4500

4000

3500

3000

2500

2000

MICRONS

1500

1000

500

LEAK IN
SYSTEM

VACUUM TIGHT
TOO WET

TIGHT
DRY SYSTEM

A05227

Fig. 3 -- Liquid--Line Filter Drier

Refrigerant Tubing connection Outdoor

Connect vapor tube to fitting on outdoor unit vapor service valves
(see Table 1).

No Installation of Adapter Tube

Although it is a heat pump this unit has a standard AC liquid
service valve. An EXV inside the unit serves as the heating
expansion device.

Sweat Connections

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

S Use a brazing shield
S Wrap service valves with wet cloth or heat sink material.

Use refrigerant grade tubing. Service valves are closed from factory
and ready for brazing. After wrapping service valve with a wet
cloth, braze sweat connections using industry accepted methods
and materials. Consult local code requirements. Refrigerant tubing
and indoor coil are now ready for leak testing. This check should
include all field and factory joints.

CAUTION

Evacuate Refrigerant Tubing and Indoor Coil

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Never use the system compressor as a vacuum pump.

CAUTION

01234567

MINUTES

Fig. 4 -- Deep Vacuum Graph

A95424

A95424

Final Tubing Check

IMPORTANT: Check to be certain factory tubing on both indoor

and outdoor unit has not shifted during shipment. Ensure tubes are
not rubbing against each other or any sheet metal. Pay close
attention to feeder tubes, making sure wire ties on feeder tubes are
secure and tight.

Step 7 — Make Electrical Connections

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal
injury or death.

Do not supply power to unit with compressor terminal box
cover removed.

Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.

NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.

NOTE: Use copper wire only between disconnect switch and unit.

NOTE: Install branch circuit disconnect of adequate size per NEC

to handle unit starting current. Locate disconnect within sight from
and readily accessible from unit, per Section 440--14 of NEC.

WARNING

Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

5

Replaces: II288B ---02

Route Ground and Power Wires

Remove access panel to gain access to unit wiring. Extend wires
from disconnect through power wiring hole provided and into unit
control box.

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury
or death.

The unit cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault
should occur. The ground may consist of electrical wire or
metal conduit when installed in accordance with existing
electrical codes.

Connect Ground and Power Wires

Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 5.

DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES

FIELD POWER

WIRING

TERMINAL

BLOCK

General Information

Use No. 18 AWG or larger color-- coded, insulated (35C
minimum) wire for low voltage control wires.

All wiring must be NEC Class 2 and must be separated from
incoming power leads.

Use furnace transformer, fan coil transformer, or accessory
transformer for control power requirement of system accessories
external to the OD unit. The outdoor unit has its own transformer
power.

Final Wiring Check

IMPORTANT: Check factory wiring and field wire connections to

ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.

User Interface (UI)

D

C

B

A

Furnace or Fan Coil

D

C

B

A

OAT

RYOWCHUM

C and D

not required

’C’ connection optional

HP

D

C

B

A

FIELD GROUND

WIRING

GROUND
LUG

A14028

Fig. 5 -- Line Power Connections

Connect Control Wiring--Evolution Connex

Connect to Evolution connections. Only two wires (AB) to
Evolution capable indoor unit (furnace or fan coil) are required.
Connect C if additional grounding is required (see Fig. 6).

IMPORTANT: This system requires the power supplied to the
outdoor unit, and the indoor unit, for the UI to communicate with
the outdoor unit.

Connect Control Wiring-- Non--Communicating

Six wires are required when connecting 288BNV models to
non--communicating 2--stage thermostats. Use Fig. 7 For required
connections. Unit is configured by factory for Evolution
communicating control. To wire unit for non--communicating
control, disconnect the green (A) and yellow (B) wires from
ABCD plug and connect appropriate wires to low voltage terminal
block. Use wire nuts to attach thermostat wire to LVCH harness.

Humidifier

C

24vac

A11144

Fig. 6 -- Evolution Furnace or Fan Coil Wiring with

Communicating Variable Speed HP

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

6

Replaces: II288B ---02

Thermidistat Fan Coil Heat Pump

Outdoor Sensor

Humidifier Solenoid

Valve

Remote Room

Sensor

Heat Stage 3

(furnace)

W/W1 W/W1 W1

Outdoor Sensor

Humidifier Solenoid

Valve

Remote Room

Sensor

OO

RVS Cooling O/B W2 W1 W1

Heat Stage 3 W/W1 W2

J2 Jumper
on Control Board

Heat/Cool Stage 1 Y1 / W2 Y1 Y1

Heat/Cool Stage 2 Y/Y2 Y/Y2 Y2

Fan G G

Jumper Wire
Required for
Single-Stage

24VA C Hot Heating Rh R

24VA C Hot Cooling Rc

Dry Contact 1 D1

Dry Contact 2 D2 DH

24VA C Common C C

Humidify HUM

Outdoor Air Temp OAT

Remote Room Sensor RRS

OAT/RRS Com SRTN

Thermidistat Furnace Heat Pump

RVS Cooling O/B W2 W2

R

J1 Jumper
on Control Board

C

A14269

O

Heat/Cool Stage 1 Y1 / W2 Y1

Heat/Cool Stage 2 Y/Y2 Y/Y2 Y2

Fan G G

24VA C Hot Heating Rh R

24VA C Hot Cooling Rc

Dry Contact 1 D1

Dry Contact 2 D2

24VA C Common C COM

Humidify HUM

Outdoor Air Temp OAT

Remote Room Sensor RRS

OAT/RRS Com SRTN

Fig. 7 -- Low Voltage Wiring (Non--Communicating)

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Y1

DHUM

7

Jumper Wire
Required for
Single-Stage

R

J1 Jumper
on Control Board

C

A14029

Catalog No: II288B ---03

Replaces: II288B ---02

Step 8 — Compressor Crankcase Heater

This compressor has an internal crankcase heater. Furnish power
to the unit a minimum of 24 hr before starting the unit for the first
time.

To furnish power to heater only, set thermostat to OFF and close
electrical disconnect to outdoor unit.

Power is not required to the indoor unit or User Interface for proper
operation of heater. Crankcase heater will be intelligently
energized as needed between operations, even when the UI or
thermostat and indoor unit is not installed, as long as there is power
to the outdoor unit.

Airflow Setup for Evolution Connex Control
Furnace or FE Fan Coil (communicating)

This system can only be installed with Evolution-- capable indoor
and Evolution Connex User Interface (UI) SYSTXBBECC01,
SYSTXBBECW01 or SYSTXBBECN01 with version 11 software
or newer. When using an Evolution Connex User Interface, airflow
is automatically selected based on equipment size. The user has the
option of selecting Comfort, Efficiency and Max airflow for
Heating and/or Cooling modes. These should be selected based on
balance between the homeowner’s comfort and energy
consumption expectations. See User Interface Installation
Instructions for additional available adjustments.

Due to using a communicating control with the fan coil or the
furnace, dip switch adjustments are not necessary. The outdoor
unit configuration and the indoor airflows are determined by
communicating control setup.

Airflow Setup for Non--communicating Fan Coil

The system can be installed with a standard 2--stage heat pump
thermostat and FV4C fan coil without additional accessories.
Select appropriate unit size on fan coil Easy select board.

For replacement applications with older FV4(A,B), FK4 and 40FK
fan coils, the model plug in the outdoor unit must be changed per
Table 2 below.

The model plug adjusts compressor speed to match available low
stage indoor airflow.

Table 2 – Alternate Model Plug

FV4(A,B), FK4, 40FK Fan Coil Mode ls*

(Requires outdoor model plug change)

Unit Size

288BNV024B{ 009 015
288BNV024A{

288BNV025
288BNV036 002 017
288BNV048 003 018
288BNV060 004 019

* FK4 and 40FK also require a TXV change. See accessory list for approved TXV.

{ 24A unit height is 38 ---7/16” and 24B unit height is 31 ---5/8”

Fact ory

Model Plug #

HK70EZ***

001 016

Required Accessory

Model Plug #

HK70EZ***

Airflow Setup for Non--communicating Furnaces

For installations with non--communicating furnaces, set airflows to
350--400 cfm/nominal ton in high stage and 70--80 percent of high
stage airflow in low stage.

Step 9 — Install Accessories

No refrigeration circuit accessories are required or are available for
installation within the unit. External to the unit, the same
accessories such as support feet, snow rack, wind baffle etc.,
available on other Bryant units, can also be used on this line of
product. For models utilizing 23 inch x 23 inch base pans, it is
recommended to use 5 support feet in order to fully support unit.
See Fig. 8. Refer to the individual Installation Instructions
packaged with kits or accessories when installing.

Fig. 8 -- Recommended Support Feet Location

A14008

Step 10 — Start--Up

!

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this caution may result in minor personal
injury, equipment damage or improper operation.

Observe the following:

1.Do not overcharge system with refrigerant.

2.Do not operate unit in a vacuum or at negative pressure.

3.Do not disable low pressure transducer or system safety

devices such as discharge thermistor or the high pressure

switch.

4.Dome temperatures may be hot.

5.Discharge thermistor is engaged tight on the discharge tube.

!

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Wear safety glasses, protective clothing, and gloves when
handling refrigerant.

!

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental
damage.

Federal regulations require that you do not vent refrigerant to
the atmosphere. Recover during system repair or final unit
disposal.

CAUTION

CAUTION

CAUTION

Manufacture r reserves the right to change, a t any time, specif icatio ns and designs without noti ce and without obligations.

Catalog No: II288B ---03

8

Replaces: II288B ---02