Carrier 38QRF018, 38QRF036, 38QRF018-036 Installation Instructions Manual

38QRF018---036 Duct Free Heat Pumps

Installation Instructions

A07532

Fig. 1 -- 38QRF

NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1........................

INSTALLATION 2--6.................................

Complete Pre--Installation Checks 2...................

Rig and Mount Unit 5..............................

Complete Refrigerant Piping Connections 5.............

Make Electrical Connections 6........................

START-- UP 9........................................

SERVICE 9.........................................

MAINTENANCE 13..................................

TROUBLESHOOTING 14--15..........................

SAFETY CONSIDERA TIONS

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 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 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 would 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.

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.

WARNING

INSTALLATION

UNIT OPERATION AND SAFETY HAZARD

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

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

PERSONAL INJURY AND EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in personal injury and / or equipment damage.

38QRF

DO NOT operate the unit without a filter or with grille removed.

Complete Pre--Installation Checks

Unpack Unit

Move the unit to final location. Remove unit from carton, being careful not to damage service valves and grilles.

WARNING

CAUTION

Inspect Shipment

File a claim with the shipping company if shipment is damaged or incomplete. Check the unit nameplates to ensure units match job requirements.

Consider System Requirements

Consult local building codes and NEC for special installation requirements.

Allow sufficient space for airflow clearance, wiring, refrigerant piping, and servicing unit. See Fig. 3.

Locate unit so that condenser airflow is unrestricted on both sides. Refer to Fig. 3.

Unit may be mounted on a level pad directly on base legs or mounted on raised pads at support points. See Fig. 3 for center of gravity.

Matching the Heat Pump to an Indoor Unit

The 38QRF018--036 unit can be matched with either a 40QNQ hi--wall unit or 40KMQ in--ceiling cassette unit. The 38QRF035 unit can only be matched with in--ceiling cassette indoor units. The 38QRF036 unit can only be matched with high wall indoor units. Refer to separate indoor unit literature for more information

Check AccuRater Metering Device -- Heating Mode

The correct AccuRater (bypass type) refrigerant control is required for system capacity optimization. An AccuRater device with field--replaceable piston is supplied with the outdoor unit (see Fig.

2). Select the correct piston for the application from Table 1 (heating & cooling).

NOTE: Arrow on AccuRater body points in indoor coil.

Metering devices loca ted @ outdoo r unit)

Fig. 2 -- AccuRater (bypass type) Metering Device Components

free flow

direction, away from the

A07884

M OPERATING WT

Support Feet

MINIMUM MOUNTING PAD

DIMENSIONS

ft-in. mm

15.88 166 75.3

15.88 176 79.8

19.05 187 84.8

19.05 221 100.2

19.05 232 105.2

024

030

035

036

in. (mm) lb (kg)

018

UNIT SIZE

HEAT

38QRF

PUMPS

UNIT SIZE

CHASSIS SIZES 0 & .6 1 -11 x3 -6 584.2 x 1066.8

CHASSIS SIZES 1 & 1.6 2 -0 x4 -2 609.6 x 1270

on coil side and coil end, and 3 feet minimum clearance on compressor

end and fan side. With fan facing wall, allow 8 in. minimum clearance on

fan side and coil end, and 3 feet minimum clearance on compressor end

and coil side. With multi-unit application, arrange units so discharge of one

0 -6

0 -2 /

0 -11 /

1 -10 1 -1 0 -6 /

1 -5 /

0 -2

0 -3

0 -11

1 -3

0 -8

1 -1

2 -4 1 -2 0 -6

2 -10

1 -11

2 -5

1 -5

1 -7

NOTES:

1. Required clearances: with coil facing wall, allow 6 in. minimum clearance

does not enter inlet of another.

2. Dimensions in parenthesis are in millimeters.

3. Center of Gravity .

38QRF

(FIELD PROVIDED AND INSTALLED)

ABCD E FG H JKL NP

SIZE

CHASSIS

38QRF

UNIT MODELS

(Reference)

2 -6

1 -4 1 -11

1 -6

1 -2 /

3 -0 /

2 -1

Unit Size

1 -2

1 -5

3 -8

3 -0

(638.2) (938.2) (369.9) (406.4) (595.3) (436.6) (435) (559.1) (330.2) (168.3) (285.8) (75) (152.4)

2 -7

(790.6) (938.2) (369.9) (406.4) (595.3) (436.6) (587.4) (711.5) (355.6) (171.5) (295.3) (75) (152.4)

(944.6) (1131.9) (433.4) (468.3) (774.7) (498.5) (741) (865.5) (347.7) (206.4) (403.2) (88) (165.4)

3 -1

0.6

1.0

018

024

030,035,036

NOTE: Dimensions shown in feet-inches. Dimensions in ( ) are millimeters.

A07883

Fig. 3 -- 38QRF Unit Dimensions

Table 1 – 38QRF018 --036 Physical Data

UNIT 38QRF 018 024 030 035 036 NOMINAL CAPACITY Tons 1.5 2.0 2.5 2.9 3.0 OPERATING WEIGHT lb (kg) 166 (75.3) 176 (79.8) 187 (84.8) 221 (100.2) 232 (105.2) REFRIGERANT TYPE Puronr (R ---410A) BASE UNIT CHARGE lb (kg) 5.5 (2.49) 6.8 (3.08) 10.7 (4.85) 10.5 (4.76) 10.0 (4.54) ADDITIONAL CHARGE--CASSETTE

lb (kg) ADDITIONAL CHARGE--HI --WALL

lb (kg) METERING DEVICE Accurater

High Wall Cooling 49 55 63 --- --- 70 High Wall Heating 45 49 53 63 I n --- Ce i l i n g Cassett e --- C o o l i n g 51 55 63 70 I n --- Ce i l i n g Cassett e --- H e a t i n g 46 53 55 63

COMPRESSOR

Type Scroll O i l C h a r g e (P O E --- o z ) 25.0 25.0 25.0 25.0 42.0 Crankcase Heater (watts) — — 40 40 —

OUTDOOR FAN Propeller Type, Direct Drive, Horizontal

Rpm/Cfm 840/1720 840/1720 850/3900 850/3900 850/3900 Diameter (in.) 18 18 24 24 24

38QRF

OUTDOOR COIL

HIGH PRESSURE SWITCH

LOW PRESS URE SWITCH

REFRIGERANT LINES

CONTROLS

FUSIBLE PLUG _F(_C) 210 (98.89) FINISH Gray

*Mixedphaselinemustbeinsulated. { 24 v and a min imum of 40 va is provided in the fan coil unit.

FPI --- Fins Per Inch POE --- P o l yol Est e r

No. Blades 3 3 3 3 3 Motor (hp)

Face A rea (sq ft) 5.8 7.3 12.1 12.1 12.1 No. Rows 2 3 2 2 2 FPI 20 20 20 20 20

Cut --- In (psig) Cutout (psig)

Low Cutout (psig) L o w C u t --- i n ( psig)

Connection Type M i x e d P h a s e --- F l a r e / Su c t i o n --- S w e a t Suction/Vapor (in.) OD Mixed P hase* (in.) OD Max Length ft (m) 200 (60.96) MaxLiftft(m) 65 (19.81) Max Drop ft (m) 150 (45.72)

Control Voltage{ 24 vac

System Electrical 208/230---1--- 60 208/230 ---1 ---60 208/230--- 1--- 60

0.0 (0.0) 0.0 (0.0) 1.8 (1.04) 0.0 (0.0) --- ---

0.8 (0.36) 0.5 (0.23) 0.0 (0.0) --- --- 0.0 (0.0)

1/8 1/8 1/4 1/4 1/4

420 ± 25 650 ± 10

20 ± 5

45 ± 25

420 ± 25 650 ± 10

20 ± 5

45 ± 25

5/8 3/4

420 ± 25

650 ± 10

20 ± 5

45 ± 25

3/8

420 ± 25 650 ± 10

20 ± 5

45 ± 25

208/230---1--- 60, 208/230---3--- 60 4 6 0 --- 3 --- 6 0

420 ± 25 650 ± 10

20 ± 5

45 ± 25

RIG AND MOUNT UNIT

Mounting on Ground

Mount unit on a solid, level concrete pad. Position unit so water or ice from roof does not fall directly onto unit. Accessory stacking kits can be used when units are to be stacked. See installation instructions provided with the accessory kit. Use field--provided snow stand or ice rack where prolonged subfreezing temperatures or heavy snow occurs.

If conditions or local codes require unit be fastened to a pad, 6 field--supplied tiedown bolts should be used and fastened through slots provided in unit mounting feet.

For hurricane tie downs -- contact your local distributor for details and PE (Professional Certification), if required by local authorities.

Mounting on Roof

Mount unit on a level platform or frame at least 6 in. (152.4 mm) above roof surface. Isolate unit and tubing from structure.

Rigging

PERSONAL INJURY AND/OR EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in personal injury and/or equipment damage. Be sure unit panels are securely in place prior to rigging.

Keep the unit upright and lift unit using a sling. Use cardboard or padding under the sling, and spreader bars to prevent sling damage to the unit. See Fig. 4. See Fig. 3 for center of gravity reference. Install the unit so that the coil does not face into prevailing winds. If this is not possible and constant winds above 25 mph are expected, use accessory wind baffle. See installation instructions provided with the accessory kit.

NOTE: Accessory wind baffles should be used on all units with accessory low ambient temperature control.

Field--fabricated snow or ice stands may be used to raise unit when operation will be required during winter months. Units may also be wall mounted using the accessory wall mounting kit.

CAUTION

COMPLETE REFRIGERANT PIPING CONNECTIONS

Outdoor units may be connected to indoor units using field--supplied tubing of refrigerant grade and condition. See Table 1 for correct line sizes. Do not use less than 10 ft (3.05 m) of interconnecting tubing.

UNIT DAMAGE HAZARD

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

If any section of pipe is buried, there must be a 6 in. (152.4 mm) 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 system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start--up.

When more than 80 ft (24.4 m) of interconnecting tubing is used, consult the Duct--Free Split System Long Line Application Guide for required accessories. If either refrigerant tubing or indoor coil is exposed to the atmosphere, the system must be evacuated following good refrigeration practices.

Run refrigerant tubes as directly as possible. Insulate both tubes, avoiding unnecessary turns and bends. Suspend refrigerant tubes to avoid damage to insulation or tubes so that they do not transmit vibration to structure. Also, when passing refrigerant tubes through a wall, seal the opening so rain or insects do not enter structure. Leave some slack in refrigerant tubes between structure and outdoor unit to absorb vibration. Refer to separate indoor unit installation instructions for additional information.

Filter Drier

Refer to Fig. 2 and install filter drier as follows:

1. Assemble all parts as shown in Fig. 2

2. The filter drier must be replaced whenever the refrigeration system is exposed to the atmosphere.

3. Only use factory specified liquid--line filter driers with rated working pressures less than 600 psig.

NOTE: Do not install a suction -- line filter drier in liquid line.

CAUTION

38QRF

Fig. 4 -- Lifting Unit with Sling

A07396

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Carrier 38QRF018, 38QRF036, 38QRF018-036 Installation Instructions Manual

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