Carrier 38YRA User Manual download pdf

h_cAll NG & COOUNG

Visit www.camer.com

38YRA

12 SEER Split-System Heat Pump

Installation and Start-Up Instructions

NOTE: Read the entire instruction manual before starting the

installation.

This symbol --->indicates a change since the last issue.

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 insta_ctions thor-

oughly and follow all warnings or cautions included in literature

and attached to the unit. Consult local building codes and National

Electrical Code (NEC) for special requirements.

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 the signal words DANGER, WARNING, and CAU-

TION. These words are used with the safety-alert symbol. DAN-

GER 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 would result in minor personal

injury or product and property damage. NOTE is used to highlight

suggestions that will result in enhanced installation, reliability, or

operation.

Ir!]l i,','l'-_:K'I I_[_]

Before installing, modifying, or servicing system, main elec-

trical 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. Electrical shock can

cause personal injury or death.

INSTALLATION RECOMMENDATIONS

NOTE: In some cases noise in the living area hasbeen traced to

gas pulsations from improper installation of equipment.

1. Locate unit away from windows, patios, decks, etc. where unit

operation sounds may disturb customer.

2. Ensure that vapor and liquid tube diameters are appropriate to

capacity' of unit.

3. Run refrigerant tubes as directly as possible by avoiding

unnecessary taa'ns and bends.

4. Leave some slack between structure and unit to absorb

vibration.

5. When passing refrigerant tubes through the wall. seal opening

with RTV or other pliable silicon-basod caulk. (See Fig. 2.)

Fig. 1--Model 38YRA

A98516

6. Avoid direct tubing contact with water pipes, duct work, 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 tubing.

(See Fig. 2.)

8. Ensure that tubing insulation is pliable and completely sur-

rounds vapor tube.

9. When necessary, use hanger straps which are 1 in. wide and

conform to shape of tubing insulation. (See Fig. 2.)

10. Isolate hanger straps from insulation by using metal sleeves

bent to conform to shape of insulation.

When outdoor unit is connected to factory-approved indoor unit,

outdoor unit contains system refrigerant charge for operation with

indoor unit of the same size when connected by 15 ft of

field-supplied or factory accessory tubing. For proper unit opera-

tion, check refrigerant charge using charging information located

on control box cover.

IMPORTANT: Maximum liquid-line size is 318-in. O.D. for all

residential applications including long line.

IMPORTANT: Always install a liqnid-line filter drier. Refer to

Product Data Digest for appropriate part number. Obtain filter

drier from service parts or your distributor or branch.

INSTALLATION

Step l_heck Equipment and Job Site

UNPACK UNIT

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

unit.

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

PC 101 Catalog No. 533-80021 Pnnted in U.S.A. Form 38YRA-4SI Pg 1 02-02 Replaces: 38YRA3SI

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Fig. 1--Model 38YRA

h_cAll NG & COOUNGVisit www.camer.com38YRA12 SEER Split-System Heat PumpInstallation and Start-Up InstructionsNOTE: Read the entire instruction ma

Page 2 - OUTOOORWALL ,NOOORWAy

CARRIERDUALFUELTHERMOSTATMODEL DF24 VAC HOT [_!FAN E_-"FURNACE _]--COMPRESSOR _-N/ARMSCOOLING24 VAC COM _"RVS HEATING [--_RVS SENSINGO_T_ORI

Page 3 - U L'ZEB

Follow these steps to properly pumpdown a system and avoidnegative suction pressure.I. Fully back seat (open) liquid and vapor tube service valves.2.

Page 4 - ¥__[,.Y..M].i [,] "_I

Step 15_Check ChargeFactory charge is shown on unit rating plate. To check charge incooling mode, refer to Cooling Only Procedure. To check chargein h

Page 5 - F,._[,,!AltiliXq

NOTE:Avoidcontact betweentubingandstructureOUTOOORWALL ,NOOORWAyCAULK_ LIQUIDTUBE_" _ _r_ L-- VAPOR TUBESULATION .--iTHROUGHTHEWALL3/8-1N. [_KNOC

Page 6 - OPT,ONALON__[r

__________ SENSINGBULB U L'ZEB_" I1"_'--- THERMOSTATICEXPANSIONFig. 5_Typical TXV InstallationA88382O'CLOCK2SENSING BULBSUCT

Page 7 - ... ..1

UNITSIZE018024030036042, 048060Table 1--Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)LIQUID VAPOR VAPOR (LONG LINE)Con

Page 8

SWEAT t FLARE NUT_A9246,_A92464Fig. _---Liquid Service Valve with Sweat AdapterTubeStep 11--Make Electrical ConnectionsBe sure field wiring comphes wi

Page 9 - ... -IS:LD

CARRIERPROGRAMMABLETHERMOSTATMODEL HP24 VAC ROT [_INDOOR FAN _]HEAT STAGE 2COOL/HEATSTAGE 1RVS COOLINGNOT USED24 VAC COMNOT USEDTROUBLEOPT,ONAL{"

Page 10 - ... _ ... ___

FA, FB. FC,OTHER FD, FF, FHHP THERMOSTAT FAN COIL24 VAC HOT24 VAC COMHEAT STAGE Z=COOL_-IEATSTAGE 1INDOOR FANRVS COOLINGEMERGENCYHEAT;---* IF AVAILABL

Page 11 - Fig. 15--Defrost Control

CARRIERPROGRAMMABLETHERMOSTATMODEL HP24 VAC HOT [_INDOOR FAN DHEAT STAGE 2COOIJHEAT [_STAGE 1RVS COOLINGNOT USED24 VAC COMNOT USED I_TROUBLEOUTDOOROPT

Page 12 - 110 105 100 95

OTHERHP THERMOSTAT24 MAC HOT24 VAC COMFA, FB, FC, FHFAN COIL HEATSMART HEAT PUMP_-_-... q-_l_JWlE_COOL/HEATSTAGE 1 _ ...INOOOR FAN _ ...RVS COO