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38YSA

Heat Pump—Outdoor Section

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 CONSIDERATION

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 pack-

aged 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 Electrical Code (NEC) for special instal-

lation requirements.

Recognize safety information. This is the safety-alert symbol

When you see this symbol on the unit or in instructions and

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.

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. Elec-

trical shock can cause personal injury or death.

INSTALLATION

Step 1—Check Equipment and Jobsite

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 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.

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 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. Roof-mounted units exposed to winds

above 5 mph may require wind baffles to achieve adequate defrost.

Consult low-ambient guideline for wind baffle construction.

Arrange supporting members to adequately support unit and

minimize transmission of vibration to building. Consult local

codes governing rooftop applications.

NOTE: Unit must be level to within ±2˚ per compressor manu-

facturer specifications.

Step 3—Elevate Unit

For proper drainage, heat pump must be raised off of mounting

surface. Fig. 3 shows unit with accessory heat pump feet installed.

Use accessory heat pump snow rack in areas where prolonged

subfreezing temperatures or heavy snow occur. Refer to separate

Installation Instructions packaged with accessories.

For proper unit operation and reliability, this unit must be

installed with hard shutoff TXV on indoor section. Do not

install with evaporator coils having capillary tube or piston-

type metering devices.

Step 4—Thermostatic Expansion Valve

The outdoor section is factory equipped with a hard shutoff TXV

for metering refrigerant during heating mode. See Fig. 4-6

for location of TXV and sensing bulb in system.

Fig. 1—Model 38YSA

A92446

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

Book 1 4

Tab 5a 5a

PC 101 Catalog No. 563-811 Printed in U.S.A. Form 38YSA-2SI Pg 1 4-97 Replaces: 38YSA-1SI

1 2 3 4 5 6 ... 11 12

Podsumowanie treści

Strona 1 - Heat Pump—Outdoor Section

38YSAHeat Pump—Outdoor SectionInstallation and Start-Up InstructionsNOTE: Read the entire instruction manual before starting theinstallation.This symb

Strona 2 - → Dimensions (In.)

RGW/W1Y/Y2Y1/W2O/W2RGCORPORATETHERMOSTATMODEL 2SFK4C INDOORTERMINALBOARDSINGLE-SPEEDHEAT PUMPW1CBLS1S2OW2Y1CY/Y224 VAC HOTFANHEAT STAGE 2COOL/HEA

Strona 3

CW2LODTGYTHERMOSTATSUBBASESYSTEM WITH ONE OUTDOOR THERMOSTATINDOORSPLICECONNECTIONOUTDOORSPLICECONNECTIONDEFROSTBOARDW3CW2CW2EGRROYEORUSED WITH

Strona 4

RGW/W1Y/Y2O/W2Y1/W2CB24VAC HOTFANHEAT STAGE 2COOL/HEATSTAGE 1RVS COOLINGN/A24VAC COMM.RVS HEATINGLTROUBLES1OUTDOORSENSORCONNECTIONS2CORPORATETHERM

Strona 5

Fig. 2—Unit Reference Drawing→ Dimensions (In.)UNITSIZESERIESUNIT DIMENSIONSMINIMUM MOUNTINGPAD DIMENSIONSA B C D E F G H J K L M Support Feet Snow St

Strona 6 - Fig. 11—Defrost Control

DO NOT BURY MORE THAN 36 IN. OF REFRIGERANTTUBING IN GROUND. If any section of tubing is buried,there must be a 6-in. vertical rise to the valve conne

Strona 7 - THERMOSTAT

NOTE: In some cases noise in the living area has been traced togas pulsations from improper installation of equipment.INSTALLATION RECOMMENDATIONS1. L

Strona 8

To avoid valve damage while brazing, service valves must bewrapped with a heat-sinking material such as a wet cloth.SWEAT CONNECTION — Use refrigerant

Strona 9

SEQUENCE OF OPERATION — With power supplied to indoorand outdoor units, transformer is energized.CoolingOn a call for cooling, the thermostat makes ci

Strona 10

Fig. 12—Typical Circuit ConnectionsWIRING DIAGRAM NOTES FOR DUAL FUEL THERMOSTAT:1. Underlined letters on dual terminal indicates its usage.For Exampl

Strona 11

FAN COILY/Y2W/W1CR24 VAC HOT24 VAC COMHEAT STAGE 2COOL/HEATSTAGE 1INDOOR FANCORPORATENON-PROGRAMMABLETHERMOSTATMODEL HPHEATPUMPRVS COOLINGNOT USEDNOT

Strona 12

FAN COILYWCR24 VAC HOT24 VAC COMHEAT STAGE 2COOL/HEATSTAGE 1INDOOR FANNON-CORPORATENON-PROGRAMMABLETHERMOSTATMODEL HPHEATPUMPRVS COOLINGEMERGENCYHEATE

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