Echelon HC1B Installation And Start-up Instructions Manual

Installation and Start-Up Instructions

Split-System
Heat Pump

HC1B

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

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may
cause 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 and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read
these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and the National ElectricalCode
(NEC) for special installation requirements.

Recognize safety information. This is the safety-alert symbol
to the potential for personal injury.

Understand the signal word DANGER, WARNING, or 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 that could result in personal injury or death.
CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage.

WARNING: Before installing or servicing system, always turn off main power to system. There may be more than 1

disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death.

PROCEDURE 1—CHECK EQUIPMENT AND JOBSITE
A. Unpack Unit

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

B. Inspect Equipment

File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit service panel. (See
Fig. 2.) It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.

Fig. 1—Model HC1B

SAFETY CONSIDERATIONS

. When you see this symbol on the unit or in instructions and manuals, be alert

INSTALLATION

A92461

Form: IM-HC1B-02 Cancels: IM-HC1B-01 Printed in U.S.A. 2-94 Catalog No. 92-33HC-1B2

PROCEDURE 2—INSTALL ON A SOLID, LEVEL MOUNTING PAD

If conditions or local codes require the unit be attached to pad, tiedown 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.

When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 30-in. clearance to service end of unit
and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a
distance of 24 in. 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. above roof surface. 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.

PROCEDURE 3—ELEVATE UNIT

For proper drainage the heat pump must be raised off the mounting surface.

PROCEDURE 4—REPLACE INDOOR REFRIGERANT FLOW-CONTROL DEVICE PISTON WITH THERMOSTATIC EXPANSION
VALVE (TXV)

CAUTION: For proper unit operation and reliability, this unit must be installed with a field-supplied hard shutoff TXV.

Do not install with evaporator coils having capillary tube metering devices of piston.

After removing existing refrigerant flow-control device piston from indoor coil, install field-supplied bi-flow hard shutoff TXV kit.
(See Fig. 3.)

For TXV kit part number and charging instruction, refer to TXV label in your unit. If the indoor unit (fan coil) comes factory equipped with a
bi-flow hard shutoff TXV, no TXV charge is required.

Install TXV kit to indoor coil as follows:

1. Install suction tube adaptor.

2. Install liquid flare-to-sweat adaptor.

3. Connect external equalizer tube to fitting on suction tube adaptor.

4. Position sensing bulb on horizontal portion of suction tube adaptor. Secure using supplied hardware. Insulate bulb after installation. (See
Fig. 4.)

5. Leak check all connections.

CAUTION: DO NOT BURY MORE THAN 36 IN. OF REFRIGERANT TUBING IN GROUND. If any section of tubing is

buried, there must be a 6-in. vertical rise to the valve connections on the outdoor unit. If more than the recommended length
is buried, refrigerant may migrate to cooler buried section during extended periods of unit shutdown, causing refrigerant
slugging and possible compressor damage at start-up.

SERIAL
PROD

A

AIR DISCHARGE

E DIA SERVICE LINE CONN

FIELD POWER SUPPLY CONN

7

/8″ DIA HOLE WITH 

1

/8″ DIA KNOCKOUT

1

3

AND 1

/8″ DIA KNOCKOUT

FIELD CONTROL POWER 
SUPPLY CONN

7

/8″ DIA HOLE

TIEDOWN KNOCKOUTS

3

/8″ DIA LIQUID TUBE CONN

AIR IN

AIR 

DISCHARGE

(2) PLACES

UNIT RATING

PLATE

AIR IN

AIR 

DISCHARGE

AIR IN

D

AIR IN

C

B

.

MODEL

ID OD

PISTON

FACTORY CHARGED R-22

LBS

VOLTSPOWER SUPPLY

PH

PERMISSIBLE VOLTAGE AT UNIT

MAX

SUITABLE FOR OUTDOOR USE

COMPRESSOR
VOLTS AC
PH
HZ
RLA
LRA

FAN MOTOR
VOLTS AC
PH
HZ
FLA

DESIGN/TEST PRESSURE GAGE

HI

kPa

PSI

LO

kPa

PSI

MINIMUM CIRCUIT AMPS

MAX OVERCURRENT PROTECTIVE DEVICE

USA

®

N/A

®

INDIANAPOLIS IN

CANADA

N/A

46206313948-401 REV A

TYPE
MAX FUSE
MAX HACR CKT-BKR

MAX CKT-BKR

CARRIER CORP

Kg

HZ

MIN

A92490

UNIT

SIZE

A B C D E

In. In. In. In. In.

018 22-1/2 18-1/2 4-1/16 8-3/16 5/8
024-036 30 23-1/2 6-1/2 10 3/4
042-060 30 23-1/2 6-1/2 10 7/8

Fig. 2—Unit Reference Drawing

—2—

COIL

THERMOSTATIC
EXPANSION
VALVE

SENSING
BULB

EQUALIZER
TUBE

10 O'CLOCK

2 O'CLOCK

SUCTION TUBE

7

/

″ O.D. & SMALLER

8

STRAP

8 O'CLOCK

SENSING BULB

4 O'CLOCK

LARGER THAN

7/

″ O.D.

8

Fig. 3—Typical TXV Installation

A88382

Fig. 4—Positioning of Sensing Bulb

A81032

PROCEDURE 5—MAKE PIPING CONNECTIONS

Outdoor units may be connected to indoor sections using accessory tubing package or field-supplied refrigerant grade tubing of correct size and
condition. For tubing requirements beyond 50 ft, consult Long-Line Application Guideline which is available at your local distributor.

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

1. Locate the unit away from windows.

2. Ensure that vapor and liquid tube diameters are appropriate to the capacity of the unit. (See Table 1.)

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

4. Leave some slack between the structure and the unit to absorb vibration.

5. When passing refrigerant tubes through the wall, seal the opening with RTV or other pliable silicon-based caulk. (See Fig. 3.)

6. Avoid direct lineset contact with water pipes, ductwork, floor joists, wall studs, floors, and walls.

7. Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with the tubing. (See Fig.

5.)

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

9. When necessary, use hangar straps which are 1 in. wide and conform to the shape of the tubing insulation. (See Fig. 5.)

10. Isolate the hangar straps from the insulation by using metal sleeves bent to conform to the shape of the insulation.

If refrigerant tubes or indoor coil is exposed to atmospheric conditions for longer than 5 minutes, it must be evacuated to 500 microns to eliminate
contamination and moisture in the system.

B. Outdoor Units Connected to Factory-Approved Indoor Units

Outdoor unit contains correct system refrigerant charge for operation with indoor unit of the same size when connected by 15 ft of field-supplied
or factory accessory tubing. Check refrigerant charge for maximum efficiency. (See Procedure 9—Checking Charge.)

C. Refrigerant Tubing

Connect tubing to fittings on outdoor unit vapor and liquid service valves. (See Fig. 2.)

CAUTION: To avoid valve damage while brazing, service valves must be wrapped with a heat-sinking material such as

a wet cloth.

Table 1—Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)

UNIT

SIZE

018 3/8 3/8 5/8 5/8

024-036 3/8 3/8 3/4 3/4

042 3/8 3/8 7/8 7/8

048, 060 3/8 3/8 7/8 1-1/8

Note: Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult your local distributor.

Connect

Diameter

D. Sweat Connection

Use refrigerant grade tubing. Service valves are closed from factory and ready for brazing. Remove plastic retainer covering threads of liquid
service valve and connect sweat/flare adapter provided to valve. (See Fig. 6.) After wrapping the service valve with a wet cloth, the tubing set can
be brazed to the service valve using either silver bearing or non-silver bearing brazing material.Consultlocalcoderequirements.Refrigeranttubing
and indoor coil are now ready for leak testing. This check should include all field and factory joints.

LIQUID VAPOR

Tube

Diameter

Connect

Diameter

—3—

Tube

Diameter