Carrier 38QE User Manual

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Page 1

38QE/40QE

KEATING A COOLING

Installation Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS GENERAL OPERATION AND USAGE APPLICATION LIMITATIONS ORIENTATION AND LOCATION OF EQUIPMENT

Step 1 Inspect equipment and job site Step 2 Install outdoor fan coil section (38QE924 or

38QE936)

Step 3 Install indoor compressor section (38QE024 or

38QE036) ' Step 4 Install domestic water heating control box Step 5 Install domestic water heating tank temperature

fitting Step 6 Install thermostat

Step 7 Install indoor fan coil (40QE024, 40QE036 or

40QEH036)

(refer to installation instruction supplied with

indoor unit)

Step 8 Install other accessories

PIPING CONNECTIONS

Step 9 Install refrigerant piping Step 10 Install domestic hot water piping

ELECTRICAL CONNECTIONS

Step 11 Install control and sensor wiring Step 12 Install thermostat wiring Step 13 Install power wiring

SYSTEM SET-UP ADJUSTMENTS Step 14 Inspect Indoor blower speed settings Step 15 Adjust domestic water heating tank thermostat

settings Step 16 Configure thermostats Step 17 Adjust Refrigerant Charge

SAFETY CONSIDERATIONS

Installing and servicing air conditioning equipment can be hazeurdous due to system refrigerant pressures and electrical components. This is especially true with variable speed type

equipment, since HIGH VOLTAGE COMPONENTS REMAIN ENERGIZED AFTER THE UNIT MAIN DIS CONNECT IS OPENED!

Advanced Technology

Heat Pump System

For the above reasons, installation and servicing MUST BE conducted only by a Carrier installer/dealer specifically trained to service variable speed equipment. 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 acces sories when instalhng.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thor oughly and follow all warnings or cautions attached to<the unit. Consult local building codes and NEC (National Elec trical Code) for special installation requirements.

A WARNING

Before installing or servicing, turn off main power to indoor and outdoor units. There may be more than one disconnect switch. Turn off accessory heater power if apphcable. Electric shock can cause personal injury or death.

GENERAL OPERATION AND USAGE

The HydroTech 2000 advanced variable speed heat pump system is designed to provide heating and cooling, as weU as provide a majority of the year round domestic hot water requirements. The system is composed of three main sec tions, indoor compressor section, outdoor fan cofi. section and the indoor fan coil section (see Fig. 1). Additionally a

A DANGER

A high-voltage (300-VDC) circuit remains energized after the main disconnect is opened. The normal capaci tive discharge time is 10 minutes, but this period may be extended indefinitely by component failure. Before

servicing components within the compressor section power box, always check with a DC voltmeter across the D.C. Capacitor. Electrical shock can cause personal injury or death.

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

^ I PC 101 Catalog No. 563-964 Printed in U.S.A. Form 38QE-3SI Pg 1 5-90 Replaces: 38QE-2SI

Tab I5al5a

Fig. 1—38QE/40QE Advanced Heat Pump System

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domestic water heating control box emd domestic water heating tank temperature sensor are supplied to control the electric domestic water heating tank. The water heating is

accomphshed by pumping cold water from the cold water inlet pipe at the top of the domestic water tank, through the 38QE refrigerant-to-water heat exchanger, and back into the bottom of the tank.

The variable speed compressor operation allows the 38QE system to control its output capacity to match the required load through a wide range of outdoor temperatures and operating modes.

Specially designed mating 40QE indoor units provide vari able airflow control which is increased and decreased along with the compressor speed. This feature, along with an elec tronic expansion device, provide a level of comfort pre viously unavailable for the home. It also enhances system efficiency and provides much quieter operation them conventioneil systems during most periods of operation.

The 38QE/40QE system has many other designed in com fort and efficiency features including:

Carrier/Parker Home-Zone® thermostat and damper options—to provide separate temperature control in up to four areas.

Humidity control—add the optional humidistat to activate

special compressor and fan control which improves moisture removal as needed. Humidistat plus humidifier also controls moisture addition in the heat mode.

Air cleaning—connections provided for automatic control of optional electronic air cleaner.

Utility demand limit interface—allows owner participation in incentive programs offered by utilities for peak load con trol, where available.

Unique defrost—the high temperature of the water in the home’s hot water tank is used as the heat source for the defrost cycle, rather than cooling the indoor air as with tra ditional units. In addition, demand type defrost control pro vides defrost when, and only when, it is required.

The 38QE/40QE system is available in capacity sizes shown in Table 1. Accessories supplied with the system and other available accessories are shown in Table 2.

APPLICATION LIMITATIONS

The 38QE system software and safety devices Eire designed to prevent equipment operation under conditions that do not comply with the application hmitations.

The 38QE product has certEun application hmitations which are hsted below:

The 38QE compressor section and outdoor section are

to be matched to the specifically designed 40QE indoor fan coil section. Permitted system configurations are shown in Table 1.

Table 1—Carrier Approved 38QE Systems

SYSTEM CAPACITY INDOOR COMPRESSOR SECTION 38QE024300 38QE036300 OUTDOOR FAN-COIL SECTION INDOOR FAN-COIL SECTION

25 ft maximum vertical rise allowable

The 38QE can only be used with Carrier/Parker Home-

2 TON 3TON

38QE924300 38QE936300 40QE024300 40QE036300

Zone® thermostats. Monitor thermostat and slave ther mostat model requirements are given in Table 2. All thermostats must be properly configured and pro grammed in order to obtain normal system operation.

The 38QE should not be used with systems containing

3. more than four (4) independently dampered zones. Use

<@)

of the bypass controUer accessory is required for aU zone apphcations.

4. The system wiU not operate in the cool mode at outdoor temperatures below 45 F, and is not compatible with tie Carrier Motormaster low-ambient control

; accessory. /

5, §The systern wiU not operate in the heat mode at out

door ternperatures above 75 F. The compressor section must be located in a non-

freezing area because of water containing components. Maximum air temperature surrounding the compressor section must not exceed 105 F because of cooing required for electronic controls.

The compressor section is designed to be installed on a

7. sohd mounting pad such as concrete. Do not install compressor section in an attic, on a wall, or suspended from a ceiling.

Refrigerant line lengths are hmited to 50 ft total maxi

mum, with 25 ft maximum vertical rise between indoor and outdoor units.

9. For improved domestic water heating, locating the compressor section within 15 ft of the domestic water tank is desirable.

Table 2—Accessory Parts List

ACCESSORIES SUPPLIED WITH COMPRESSOR SECTION ORDERING NUMBER 313204-701

313288-710 313243-201

ACCESSORIES REQUIRED OR RECOMMENDED

ORDERING NUMBER HT2000

HZS (Version 2.7 or higher) ZD-06,08,10,12,14,16

RD0810,0814,0818,0824

BCE TSR01 PS02/PS01 PSPOO

RDS

RRS

PCA-223

PCA-225

HL38MG026 Humidistat

— __

38TH900011 38YH900011 38YH900021

P504-8163S

HT01AX220 Transformer 40va

RQ—Required for installations. RC—Recommended for installations.

DESCRIPTION

Water Heater Control Box Water Temperature Sensor

Assembly

Comp. Section Base Pad

Zones DESCRIPTION Singl Homezone Monitor Stat w/

clock RQ

Homezone Slave Stat RQ Round Dampers 6" thru 16" Rectangular Damper 8x10

thru 24 Bypass Controller Relay Pack-Power Supply Duct Pressure Sensor RQ Static Pressure Plok-up RQ Remote Duct Sensor OP Remote Room Sensor OP Plenum Cable—22 AWG, 3

conduc Plenum Cable—22 AWG, 5

conduc Humidifier (49BF/FH/WS) RC RC

Electronic Air Cleaner (31MPI

SX)

Outdoor Support Foot Kit, 4

in.

Outdoor Snow Rack, 18 in.

(024)

Outdoor Snow Rack, 18 in. OP

(036)

Bi-flow Filter-Drier

OP—Optional for installations.

Mult

RQ RQ

OP OP

)

RC RC RC RC

RC RC RC

RQ RQ

—

10. System is designed to work with conventional residen tial sized electric water heating tanks only. NOTE: The 38QE should be installed with electric water heater tanks that have two connections leading to the bottom of the tank, as shown in Fig. 7a (cold water in, drain). If only one connection to bottom of tank, install a preheat tank, as for gas water heaters. Fig. 7b. For installation with a gas water heater, a water preheat tank must be installed.

i ;

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Fig. 2—Outdoor Section Dimensions

Dimensions

UNIT A B C D E

SIZE* 38Q E924 38Q E936 3 1-7/8 " 809 .6

(mm )

(IN.)

809 .6 30" 762.0 34 -15/1 6"

31-7/8" •

(IN.)

38-5/8"

(mm )

391 .0 45"

(IN.)

(mm ) 887 .4

114 3.0

(mm )

(IN.)

4" 101 .6 9-3/4" 247 .6

5-15/16" 150.8

(IN.)

11-13/16 "

(mm )

300 .0 21-1 /2" 54 6.1 27-7/8" 7 08.0

(mm )

(IN.)

21-1/2" 546.1

(mm )

(IN.)

27-7/8" 708.0 8-3/16" 207 .9

A90214

(IN.) (mm )

8-9/16" 217.4

ORIENTATION AND LOCATION OF EQUIPMENT

Step 1—Inspect Equipment and Job Site.

A complete single zone system wül consist of the following:

1. Compressor Section

2. Outdoor Section

3. Indoor Section

4. Domestic Water Heater Control Box

5. Domestic Water Heater Tank Sensor

6. Homezone Monitor Thermostat

7. Homezone Power Supply Relay Pack

Unpackage and inspect imits for any damage. Füe claims with shipper if necessary.

The compressor section package wül include an installation

packet, domestic water heater control box and tank temper

ature sensor. The outdoor fan coü section will include an instaUation

packet. The indoor fan coü section wül include an instaUa

tion packet. Consult local buüding codes and the National Electrical

Code (NEC) for special requirements.

When installing, aUow sufficient space for airflow clearance

(outdoor fan-coü section), wiring, refrigerant and water pip

ing and servicing unit. Position the outdoor section so water

or ice from roof cannot drop directly on top of unit. Position the compressor section indoors and adjacent to the domes tic water heating tank.

Step 2—Install Outdoor Fan-Coü Section (38QE924 or

38QE936). The instaUation data, dimensions, and connection for the

38QE924,936 outdoor section are shown in Fig. 2.

InstaU 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 thru knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 2. Position so snow or ice from roof or eaves cannot faU directly on unit. Position to minimize direct sunlight on air temperature sensor above service valves.

On rooftop applications, locate unit at least 6 ins. above roof surface. Place xmit above a load-bearing waU and isolate

unit and tubing set from structure. Arrange supporting members to adequately support unit

and minimize transmission of vibration to buüding. Consult

local codes governing rooftop applications. For proper drainage the outdoor section must be raised off

the mounting surface. Fig. 3 shows unit with accessory sup port feet installed. Use accessory snow rack in areas where prolonged subfreezing temperatures or heavy snow occur. Refer to separate instaUation instructions packaged with the accessories.

Step 3—Install Indoor Compressor Section (38QE024 or

38QE036). The instaUation data, dimensions, and connection for the

38QE024, 036 compressor sections are shown in Fig. 4. Locate unit in non-freezing area such as a basement, garage

or utility room. Indoor locations within the living space are not recommended. Basement instaUations also require care ful planning to avoid areas directly under or adjacent to bedrooms, living rooms, etc. Locate unit near the domestic water heater. AUow space for refrigerant and water piping.

A88277

Fig. 3—Outdoor Accessory Support Feet

Page 4

UNIT

38QE024 38QE036

SHIPPING WGT. A B

SERIES LBS.

230 104.3 3/8

0 0 240

108.8 3/8 9.53

Kg.

(IN.)

(mm)

9.53

(IN.) (mm)

3/8 9.53 3/8 9.53

(mm)

(IN.)

3/4 19.05 3/4 19.05 3/4

(IN.)

3/4

Fig. 4—Indoor Compressor Section

(mm)

19.05 7/8 22.23 7/8

19.05 7/8 22.23 7/8 22.23 38QE936

(IN.)

(mm) (IN.)

(mm)

22.23 38QE924

USE WITH

OUTDOOR SECTION

wiring and for servicing the unit (see Fig. 4). Do not exceed maximum total pipe lengths.

Mount indoor compressor section on a rigid, sohd platform or concrete floor. Insert the asphalt impregnated felt pad (factory supplied in container) between the unit basepan and moimting surface to provide fuU unit support and for vibra tion attenuation. Do not use vibration isolators under cor ners of basepan.

Install unit to permit adequate clearance for service on all sides of the unit. A heat sink which is used to provide elec tronic component cooling is located at the lower right side of the rear panel. This heat sink protrudes from the rear panel. This area should always remain clear of obstructions. Do not enclose this area, in any manner. Failure to provide proper ventilation can cause equipment to malfunction.

A CAUTION

To prevent freezing of water piping, do not expose the 38QE indoor compressor section to ambient tempera tures below freezing.

Step 4—Install Domestic Water Heater Control Box.

The domestic water heater control box allows the 38QE heat pump to control the domestic water heating function. The tank elements are controlled by the 38QE such that the water heating is performed by the heat pump when possible and the tank elements are disabled.

Locate the control box adjacent to the Domestic water heat ing tank. The box will be wired in the branch circuit that

»!

Page 5

supplies the power for the Electric Water Heater Tank. Con trol and sensor wiring will also be connected to the control box. Refer to wiring section of this manual for description of the wiring required.

Step 5—Install Domestic Water Heating Tank Tempera

ture Sensor Fitting. The tank temperature sensor is used to provide the 38QE

with the tank water temperature. This temperature is used to control and terminate the water heating mode.

The water temperature sensor fitting is installed into the tank drain-out fitting. Details describing the piping are con tained within the piping section of this manual.

Step 6—Install the Thermostat(s).

The system is designed to operate with Carrier/Parker Home-Zone® model thermostats and zoning deunpers. Refer to the installation instructions shipped with the Carrier/ Parker Home-Zone® accessories.

Step 7—Install Indoor Fan-Coil Section (40QE024,

40QE036 or 40QEH036). Refer to the installation instruction shipped with the 40QE

unit.

Step 8—Install Other Electrical Accessories, if any.

Refer to the individual instructions packaged with optional accessories (humidistat, humidifier, air cleaner, zone ther

mostats and dampers).

Also refer to the installation instructions supplied with the 40QE indoor unit.

PIPING CONNECTIONS

A system piping schematic is shown in Fig. 5 which illus trates both the refrigerant and domestic water heating con nections that are required.

Isolate interconnecting tubing from the framing and duct work or where tubing runs through stud spaces, enclosed ceiling or pipe chases. Use isoiation type hangers, since rigid fastening transmits pulsation to structure, creating

objectionable sound.

Step 9—Install Refrigerant Pipes

NOTE: Before making the 3/8" O.D. refrigerant line connec

tions at the indoor coil verify that the fittings do not con tain an AccuRater piston.

The 38QE system employes a unique electronic bi directional expansion valve, located within the compressor section, and does not require AccuRaters in either the indoor or outdoor section..

Refrigerant piping between sections may be made using accessory tubing packages or field-supplied tubing of refrig erant grade, correct size and condition.

If either refrigerant tubing or unit piping is exposed to atmospheric conditions for longer than 5 minutes, it must be evacuated to 1000 microns to eliminate contamination and moisture in the system.

All refrigerant tubes must be insulated with closed-ceU foam type insulation with a minimum waU thickness of 3/8". Fail ure to properly insulate refrigerant tubes adequately wUl degrade system performance and efficiency, as well as per mitting moisture or frost to form on the tubing surfaces during some operating modes. Insulation on the refrigerant lines at the compatible fittings should extend over the com patible fitting to prevent moisture from collecting on the fitting surface and freezing during low outdoor temperature operation. Freezing of the moisture on the compatible fit ting may cause damage to the fitting and refrigerant leakage.

Run refrigerant tubes as directly as possible, avoiding unnecessary turns and bends. Suspend refrigerant tubes so they do not damage insulation on liquid and vapor tubes and do not transmit vibration to structure. Also, when pass ing refrigerant tubes through walls, seal opening so vibra tion is not transmitted to structure. Leave some slack in refrigerant tubes between structure and units to absorb vibration.

A CAUTION

DO NOT BURY MORE THAN 3 FT OF REFRIGER ANT TUBING IN GROUND. If any section of tubing is buried, there must be a 6-in. vertical rise to valve con nections on outdoor unit. If more than the recom mended length is buried, refrigerant may migrate to the cooler buried section during extended periods of shut down. This causes refrigerant slugging and possibly compressor damage at start-up.

Compressor Section

Refrigerant piping on the 38QE differs from other Carrier triple split type systems. The refrigerant piping requires the installation of two (one 3/4-in. O.D. copper tube and one 3/8-in. O.D. copper tube) tubes between the compressor sec tion and each of the indoor and outdoor sections. A filterdrier, specified in Table 2 or supplied with unit, must be installed in the 3/8-in. indoor liquid fine within 12 ins. of the compressor section for noise control. Fig. 5 illustrates the various refrigerant tube connections on the compressor section.

3/4-in. O.D. refrigerant vapor tube to indoor coil 3/4-in. O.D. refrigerant vapor tube to outdoor coü 3/8-in. O.D. refrigerant liquid tube to indoor coil 3/8-in. O.D. refrigerant liquid tube to outdoor coü

The total refrigerant fine distance from the indoor fan coü to the outdoor unit shaU not exceed 50 equivalent ft (see Fig. 6).

Both the liquid and vapor connections have compatible fit tings. Compatible fittings permit mechanical (quickconnect), or sweat connections.

A. Mechanical connection (mate one set of connections at a time.)

1. Loosen nut on compatible fitting one turn. Do not remove.

2. Remove plug and be sure 0-ring is in groove inside compatible fitting.

3. Cut tubing to correct length. Deburr and size as necessary.

4. Insert tube into compatible fitting untü it bottoms. TIGHTEN NUT UNTIL IT BOTTOMS ON SHOUL DER OF FITTING OR VALVE. Keep tube bottomed in compatible fitting whüe tightening nut. Do not over tighten.

A CAUTION

If undersized, damaged or eUiptically-shaped tubing is used when making Compatible Fitting, leeiks may result.

B. Sweat connection—Use refrigerant grade tubing.

1. Remove locknut, and rubber 0-ring from inside of com patible fitting.

2. Cut tubing to correct length.

3. Insert tube into compatible fitting until it bottoms.

Page 6

A89059

(Top)

Fig. 5—38QE/40QE System Piping Schematic

A89059

(Bottom)

Fig. 6—Maximum Refrigerant Line Length

4. 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. Consult local code requirements.

Outdoor Fan Coil Section

Jk CAUTION

A brazing shield MUST be used when tubing sets are being brazed to the service valves to prevent damage to the painted unit surface.

A CAUTION

To avoid damage while brazing, service valves must be wrapped with a heat-sinking material such as a wet cloth.

Both the liquid emd vapor lines require sweat connections. Use proper equipment and safety precautions when making the sweat connection. The service valves on this unit are both front and backseating. The service port does not con tain a Schrader fitting. Do not attempt to connect manifold until valve is fully backseated.

Service valves are closed from factory and ready for braz ing. After wrapping the service valve with a wet cloth, the tubing set can be brazed to the service valve using either sil ver bearing or non-silver bearing brazing material. Consult local code requirements.

Outdoor units contain correct system refrigerant charge for

operation with indoor unit of the same size when connected by 25 ft of field-supplied or factory accessory tubing. Check refrigerant charge for maximum efficiency (see Refrigerant

charging).

Indoor Fan Coil Section

The liquid and vapor tube fittings are flare and compatible,

respectively on the 40QE units. Use proper equipment and

safety precautions when making the flare connections. Refer to the 40QE Installation Instructions.

Step 10—Install Domestic Hot Water Piping

A CAUTION

Use only water piping, fittings and brazing material that are suitable for Potable Water systems when con necting the heat pump to the household water system. Consult local codes.

The compressor section and domestic water heater should

be located as near as possible to each other. Total length of interconnecting water piping between the compressor sec tion and water heater should not exceed the lengths shown in Table 3. The number of bends and pipe fittings should be kept to a minimum. The use of shut-off valves in the water lines between the domestic water tank and the compressor

section are not recommended as they may adversely affect the system performance. (If valves are used, use only Ball or

Gate type). However compliance with local codes should be followed. Failure to insulate pipes will result in performance degradation..

Domestic Water Heating Tank

The 38QE can be installed with a conventional electric water heater or with a gas water heater system. The basic installation procedures are the same. However in the instal

lation with the gas water heater an insulated preheat tank

Table 3—Recommended Water

Piping Size

PIPE SIZE

1/2" nom (5/8" OD) 3/4" nom (7/8" OD) 50

♦Length can increase by 1.6 ft for each elbow less than 6.

♦♦Length can increase by 2.0 ft for each elbow less than 6.

tTotal length of cold and hot water pipes.

ALLOWABLE TOTAL

PIPING LENGTH (Ft)t

ALLOWABLE TOTAL

PLUS

PIPING ELBOWS

6**

must be used. The preheat tank is essentially an electric water tank without the electric heating elements.

Installation of the 38QE with a conventional electric water heater is shown in Fig. 7a. Installation with a gas water heater and preheat tank is shown in Fig. 7b.

Tank Water Temperature Sensor

The connection of the water heating lines to the tank includes the installation of the tank water temperature sen sor. The tank water temperature sensor is located within the drain fitting of the tank. The fitting location is shown in Fig. 7a,b. The detail for instaUing the sensor is shown in Fig. 8.

Water connection tubes on the 38QE compressor section are

identified in Fig. 4. The two tubing stubs require fieldsupplied sweat couplings or reducing couplings for connec tion to water lines.

A CAUTION

A brazing shield must be used when tubing and fittings are being brazed to the water stub tubes to prevent damage to the painted unit surface.

Page 7

Fig. 7a—Installation with Conventional

Electric Water Heater

7. Insulate all water pipes with closed-cell foam type insu lation with a nunimum wall thickness of 3/8 in.

8. If shut off valves have been installed in the water lines between the tank and compressor section, slowly open all valves. Bleed air from the heat pump water circuit and circulating pump. First loosen the threaded union on the pump outlet untU water flows out and no air is present. Retighten union. Repeat process with xmion on pmnp inlet. Then loosen air bleed screw in the center of the circulating pump. The air bleed screw should only be loosened, not totally removed, enough to allow air to bleed. Retighten screw after system has been bled.

A CAUTION

Failure to bleed air from the water pump before energiz

ing will cause immediate pump failure. The pump

employs water-cooled and lubricated bearings; and if air

is left in the vicinity of the bearing, insufficient cooling

and lubrication will be available and bearing failure will

result.

ELECTRICAL CONNECTIONS NOTE: This equipment generates and uses radio frequency

energy. If not installed properly in strict accordance with these installation instructions, it may cause interference with televisions and/or radio reception. It has been tested and foxmd to comply with the limits for a Class B comput ing device in accordance with the specifications in Subpart J of Part 15 of FCC rules (which are designed to provide pro tection against such interference in a residential installa tion). However, there is no guarantee that there will not be interference in a particular installation. If this equipment does cause interference to television and/or radio reception, which can be determined by turning the equipment off and on, the installer or serviceman should refer to “38QE Start

up, Troubleshooting and Service Guide.”

Fig. 7b—Installation with Gas Water Heater

and Preheat Tank

Tank Water Temperature Thermostat

Adjust the lower electric heater thermostat to the minimum setting.

Water Piping Installation

1. Shut off all electrical power to domestic water heater.

2. Shut off water supply to domestic water heater and drain tank.

Remove drain valve from bottom of tank which

3. requires sensor (Fig. 7a or 7b). Install pipe nipples and tee and insteJl tank water temperature sensor as shown in Fig. 8. Bend sensor up to avoid hitting water tanks that have dome shaped bottoms.

Install second tee into tank sensor tee as shown in Fig. 8. Install drain valve and connect water piping between second pipe tee and hot water outlet connec tion on the compressor section.

5. Install a tee fitting on the cold city water supply as shown in Fig. 7. Install the water piping between the tee fitting and the cold water inlet connection on the compressor section.

6. Refill the hot water pipes and tank, purge air, and check aff water connections for leaks.

HOT WATER FROM 38QE COMPRESSOR SECTION

Fig. 8—Hot Water Inlet Connection

to Hot Water Tank

A90213

Page 8

Compressor section to indoor fan coil section ;

38QE Compressor Section

Terminal Board

Compressor section to outdoor fan coil section:

38QE Compressor Section

Terminal Board

40QE

Indoor Section

Terminal Board

38QE Outdoor Section Terminal Board

Domestic water heater control box and temperature sensor (Electric water heater)

Water Heater Control Box Terminal Board

Water Temperature Sensor

Water Temperature Sensor (Gas water heater and preheat tank)

38QE Compressor Section Terminal Board

(w^

38QE Compressor Section

Terminal Board

Water Temperature Sensor

Splice Connection

-- Field Wiring ~ Factory Wiring

Fig. 9—System Control and Sensor Connections

0 0

Page 9

A CAUTION

Avoid running control and sensor wiring in parallel bundles, conduit or pipe chases with the power wiring. Power wiring can cause interference with the control and sensor wiring. Maintain a minimum of 6 ins. of sep aration between the control and sensor and power wir ing. Control wiring should be secured to the refrigerant piping between the compressor, indoor and outdoor units.

A CAUTION

To prevent interference avoid running control and sen sor wires in parallel with antenna emd telephone cables.

IMPORTANT: The use of aluminum wire for any power or

control wiring is not allowed, all electrical wiring must be copper; and all wiring specifications pertaining to the 38QE system are specified as copper wire using American Wire Gauge (AWG) sizing system

Step 11 —Install Control and Sensor Wiring

The control wiring consists of connections between the com

pressor section, water heater control box, indoor fan coil

and the thermostat. Sensor wiring is connected between the outdoor fan coil and the compressor section. Sensor wiring

is also connected between the water heater tank and the

domestic water heating control box. Control and sensor wiring requires standeird "thermostat

type and gauge of wire. The plenum cable listed in Table 2 is

recommended.

Compressor Section to Indoor Fan Coil Section

Run one length of 3 conductor wire. See Fig. 9 for connec tion schematic. These three wires are used to control com

munications. To reduce the possibihty of electrical interfer

ence, route this cable along the refrigerant tubes and attach with wire ties.

Compressor Section to Outdoor Fan Coil Section

Run one length of 3 conductor wire. See Fig. 9 for connec tion schematic. These wires are used for outdoor unit tem

perature sensors. To reduce the possibility of electrical

interference, route this cable along the refrigerant tubes and attach with ties.

Domestic Water Heater Control Box to Compressor Section

Run one length of 4 conductor wire. See Fig. 9 for connec

tion schematic. Two wires will be used to power the water heater contactor. The other two wires will be used for the tank sensor connections. Do not interconnect the contactor

and sensor wires as immediate damage will result.

Domestic Water Tank Temperature Sensor to Water Heater

Control Box

See Fig. 9 for connection schematic. Use 2 conductor wire, if extra length is required to make the connection.

NOTE: For installations with a gas hot water heater and a

preheat tank, the water heater control box may be omitted. Wire tank water temperature sensor directly to compressor

section as shown in Fig. 9.

Step 12—Install Thermostat Wiring

The thermostat connections are described below for both single and multiple zone installations.

The single zone instaRation requires a Parker relay pack power supply accessory to provide power for the single zone thermostat.

Single Zone—Fig. 10

Connect 3 wires from indoor fan coil section to monitor ther mostat. Connect 5 wires from thermostat to power supply module. Connect 2 wires from the power supply module to the indoor fan coU section terminals R and C or an auxiliary transformer that is capable of supplying 24 VAC. These connections are shown schematically in Fig. 10. AH connec tions within the indoor fan coU are described in the 40QE Installation Instructions.

Multiple Zone (option)—Fig. 11

Connect 3 wires from indoor fan coil section to Monitor Thermostat. AU additional zones are to be connected as shown in Fig. 11 in parallel. All connections within the indoor fan con and for each additional zone are described in the 40QE Installation Instructions.

Other Accessories

Refer to the individual instructions packaged with optional accessories for their control wiring. Also refer to the instal

lation instructions supplied with the 40QE indoor unit.

Step 13—Install Power Wiring

The 38QE system requires three branch circuits for power. These include the compressor section, domestic water heater and the indoor fan coil. The outdoor fan coil section receives power from the indoor compressor section. The electrical data for the 38QE system is shown in Table 4.

NOTE: Be sure field wiring comphes with local emd national

fire, safety and electrical codes, and voltage to system is within limits shown in Table 4 or on unit rating plate. Con tact local power company for correction of improper volt

age. See Table 4 for recommended circuit protection device.

NOTE: Operation of unit on improper line voltage consti

tutes abuse and could affect unit reliability. Do not install unit in system where voltage may fluctuate above or below permissible limits.

Install all branch circuits and disconnect switches in accord

ance with National Electric Codes (NEC) and appMcable local codes. Locate disconnect(s) within sight from and read ily accessible from the unit, per section 440-14 of the

National Electric Code (NEC).

208 Volt Operation

Model 38QE and 40QE units are factory wired for nominal

Page 10

TSR-01 Relay Pack Circuit Board

24 VAC R and C on

'40QE

Terminal

Board

Fig. 10—Thermostat Wiring Diagram

(Singie Zone)

Fig. 11—Thermostat Wiring Diagram

(Multipie-Zone)

A89057

Page 11

Table 4—Electrical Data

OPERATING

INDOOR COMPRESSOR SECTION 38QE024300 208/230/1

38QE036300 208/230/1 187 254 OUTDOOR FAN-COIL SECTION 38QE924300 208/230/1

38QE936300 208/230/1 187 254 WATER HEATER CONTROL BOX 38QE9XX300 208/230/1 187 254 20 20

FLA —Full Load Amps HACR—Heating, Air Conditioning and Refrigeration MCA —Minimum Circuit Amps RLA —Rated Load Amps LRA —Locked Rotor Amps

VOLT/PHASE

VOLT AG £♦

MIN

187 254

187

MAX

254 .5

♦Permissible limits of the voltage range at which the unit will operate

satisfactorily.

♦♦Outdoor Coil Wiring—For 25-ft wire run or less, use minimum 14 AWG

wire size. For longer wire run, use same size wire as supply to compres

sor section.

COMPRESSOR FAN

LRA

35.0

35.0 25.3 50

RLA FLA

20.3 40

MAX FUSE or

HACRTYPE

CIRCUIT BKR

AMPS

MCA

25.9

32.4

230 V operation. The primary connection on control trans

formers must be rewired to the 208 volt wires for line volt

age between 187 emd 218 Volts. Refer to the 38QE Compres

sor Section label wiring diagram for location and wire identi fication to rewire the two (2) transformers in the main con trol box. Refer to the 40QE label wiring diagram for loca tion and wire identification to rewire the transformer in the

accessory heater or cooling-only control package. Cap each unused transformer wire with a wire nut and tape or, if the unused lead has a push-on terminal, tape and protect any exposed metal on the terminal.

Compressor Section

InstaR branch circuit disconnect of adequate size to handle compressor section. Route line power leads from disconnect through hole provided in compressor section top rear panel and into the main control box. Connect ground wire to ground lug. Connect main power to the terminal block located within the main control box. The compressor section wire label illustrates the terminal block location.

Rear panel wiring holes are shown in Fig. 4. See Fig. 12 for connection schematic.

38QE Compressor Section Control Box

Outdoor Fan Coil Section

The outdoor fan coil section receives power from the com pressor section. Provide a separate disconnect switch for the outdoor fan cofi. section. Fig. 12 illustrates the connec tions from the compressor section to the disconnect switch and then to the outdoor fan coil section.

Connect ground wire to ground lug. Route power wires for the outdoor fan coil section through the 7/8-in. hole provided in the top rear panel of the compressor section. Splice wires to pigtails with wire nuts.

Connect the power wires to the outdoor disconnect switch. From the disconnect switch, extend wires through hole pro vided in outdoor fan coil section and into line voltage sec tion of control box. Splice leads to black and yeUow pigtails with wire nuts. Connect ground wire to ground lug inside control box.

Domestic Water Heater Control Box (Electric Heater Only)

Install branch circuit disconnect of adequate size to handle domestic water heater. Fig. 13 illustrates the required wir ing connection between the branch disconnect and the 38QE

Splice Connection

Field Wiring Factory Wiring

Fig. 12—Compressor Section and Outdoor

Section Power Connections

Page 12

38QE Water Heater Control Box

Splice Connection Field Wiring Factory Wiring

Fig. 13—Water Heater Control Box Power Connections

(Electric Water Heater Only)

A89056

water heater control box and the domestic water heater splice box.

A CAUTION

The water heater control box is designed for a maxi mum of 20 Amps. Make certain that the water heater does not exceed this 20 Amp limit. This system is not designed to be installed with commercial grade electric water heaters that may have greater than 20 Amp

requirements.

Indoor Fan Coil Section

Install branch circuit disconnect of adequate size to handle indoor fan coil section. The proper wire sizing and lengths, circuit breaker or fuse amp requirements are included in the 40QE installation instructions. Indoor power connection diagrams are also included in the 40QE installation instructions.

SYSTEM SET-UP ADJUSTMENTS Step 14—Inspect Indoor Blower Speed Limits

40QE fan coils are supplied with maximum and minimum speeds preset at the factory. Maximum and minimum blower speeds are determined by an 11-pin torque selection connector located on the blower controller. (See indoor imit installation instructions for component location.)

To Inspect Blower Speed Settings—

1. Remove indoor unit access doors.

2. Refer to indoor unit installation instructions to locate 11-pin speed selection connector on controller.

3. Check for proper factory speed pin settings on control

ler and adjust as shown below, if necessary.

Minimum and maximum settings may require adjustment later. Refer to the 38QE and 40QE Start-Up and Service Instructions.

Step 15—Adjust Domestic Water Heating Tank Thermo

stats (Electric Heater Only) Adjust the lower element thermostat setting to the mini-

INDOOR

UNIT

40QE024 40QE036

Refer to 40QE Installation Instructions for proper Indoor Fan Coll Blower setup.

NOMINAL SPEED SETTINGS

(MAX.-MIN.)

5-2 7-3

mum value possible. This maximizes the heat pump water heating capability. If this element is set above 100 F the heat pump will not provide water heating. When the tem perature setting of the lower element is above 100 F the tank will operate as a conventional electric water heater.

(NOTE: If the 38QE has been installed with a conventional

gas water heater the above steps are not required.)

Step 16—Configure Thermostats

In order for the 38QE system to work properly the thermo stat must be corrrectly configured.

This procedure contains basic instructions for thermostat operation. For detailed information on adjusting setpoints or setup, refer to the instructions inside the thermostat cover and the HydroTech 2000 Start-up and Service Manual.

If the thermostat appears to malfunction during this proce

dure, refer to the appropriate Parker Thermostat Operation Manual. HydroTech 2000 Start-up and Service Manual or the Parker Homezone Troubleshooting Guide.

Make sure thermostat mode switches are set to OFF, and FAN is set to AUTO.

Turn the indoor unit main disconnect switch ON (Note: Transformers supplying power to multi-zone dampers and thermostats may be on separate circuit from indoor unit.). When the thermostat is powered up, the display will show cooling and heating set points. If the display is blinking on and off, it is indicating incorrect wiring connections or that the thermostat is not receiving adequate power. Check wir

ing connections and supply voltage from the transformer. The voltage must be 22 volts minimum. Make certain that the thermostat ribbon cable has been inserted into the con nector board correctly.

Page 13

If the thermostat displays a hardware, software, heat pump, or fan coil error code (HF,SF,HP or FC followed by a two digit number), refer to the HydroTech 2000 Start-up and Service Manual for further instruction on how to isolate and clear system problems.

At initial start-up, thermostat(s) and bypass controller func

tions must be manually configured. This may be accompHshed per the instructions located under the thermostat cover with addressing exceptions as Hsted below:

NOTE: Be sure to correctly configure system for a variable speed system and single- or multiple-zone application as

detailed in the instructions for rotary switch position F8, F9

and F13.

The proper configuration, programming and setup for

single- and multiple-zone installations are described here:

1. Address numbers 1 thru 2 are reserved for the 38QE controls. No other devices can use address 1 thru 2. Be sure the 38QE compressor section control module is set to address 1 and the 40QE fan section control module is set to address 2.

2. The monitor thermostat used for single-zone applica tions should use address 3.

3. For multiple-zone apphcations the monitor thermostat MUST BE addressed to the highest number followed by the bypass controller (required) and then the slave thermostats in any order (example: monitor thermostat is address 6, bypass controller is address 5, zone 2

slave thermostat is address 4, zone 3 slave thermostat is address 3.)

4. Power to indoor unit must be cycled after any change to monitor thermostat address.

After all device features have been set or checked, return all rotary switches to position 0 then, start-up and check the operation of the 38QE variable speed system. Refer to HydroTech 2000 Start-up and Service Manual.

To check the configm-ation:

1. Power up the thermostat.

2. Remove the thermostat cover.

3. Turn the rotary switch to the position indicated in Table 5.

4. Check that the configuration settings are correct.

After the configuration values are correctly set:

1. Turn the rotary switch to position “0”.

2. Replace the thermostat cover.

These configuration items are the minimum required to get the system running. There are many other options and fea tures available through the remaining configuration set tings. Refer to the Parker Reference Manuals for a complete description and correct use of these additional features.

Step 17—Adjust Refrigerant Charge

38QE refrigerant charge adjustment or recharge must be made by weighing-in the proper amount of refrigerant. Serv-

Table 5—Carrier/Parker HT2000 Home-Zone® Thermostat Configuration

ROTARY SWITCH

POSITION ROTARY SWITCH SETTING

0 COMFORT SETPOINTS 74 74 74 74 1 2 SETBACK OVERRIDE TIME LIMIT 60 3 4 4 5 ZONE TEMP. SENSOR CALIBRATION 6 SUPPLY AIR TEMP. SENSOR CALIBRATION 7 COMMUNICATION CHECK 8 PRESSURE SENSOR ERROR CORRECTION

9 A B

D NOT USED E

F1 F2 F3 ERROR CODE DISPLAY F4 2400 BAUD RATE F5 F6 F7 F8

F9 F10 F11 F12 F13 F14 F15 F16 FI 7

*VSE PARAMETERS ARE USED TO CONFIGURE OR TROUBLESHOOT THE VARIABLE SPEED SYSTEM. FOR DETAILS, REFER TO THE START-UP AND SERVICE MANUAL FOR THE COMPRESSOR BEARING SYSTEM.

NOTE: ADDRESS THERMOSTAT FOR MULTIPLE-ZONE OPERATION AS FOLLOWS: SLAVE 2 ADDRESS = m-3

MONITOR ADDRESS = m I BYPASS CONTROL ADDRESS = m-1 I SLAVE 1 ADDRESS = m-2 SLAVE x ADDRESS = 3

DEVICE ADDRESS

SETBACK SETPOINTS 85 65 85 65 DAMPER MAXIMUM OPEN POSITION DAMPER VENTILATION POSITION 05

MAXIMUM PRESSURE SETPOINT 100* HUMIDITY SETPOINT 50 SYSTEM MODE DEMAND/LARGE DEMAND VARIABLE SPEED EQUIPMENT CONFIG.

NOT USED HTG./CLG. TIMEGUARD OVERRIDE CELSIUS TEMPERATURE DISPLAY

HEAT PUMP SYSTEM ON LOCAL OUTSIDE AIR TEMP. SENSOR** DX COIL TEMPERATURE SENSOR OFF MULTIPLE ZONE SYSTEM OFF VARIABLE SPEED EQUIPMENT ON LOCAL HUMIDITY SENSOR OFF EFFICIENCY OPERATING MODE OFF* ALTERNATE INFORMATION DISPLAY HIGH/LOW TEMPERATURE LIMITS OFF

AUTO FAN OFF FOR HEAT TEMPERATURE TREND STAGING ON SETBACK LOCKOUT OFF

BYPASS CONTROLLER OFF

FACTORY SET. SINGLE ZONE

OFF

BLANK BLANK BLANK BLANK

OFF OFF

ON ON

OFF

X = NO. OFZONES-1

4 ZONES MAX. (MONITOR -I- SLAVES) (REFER TO COMPRESSOR UNIT INSTRUCTIONS

FOR OTHER ZONING LIMITATIONS)

DISPLAY

3 m*

15 05 05

MULTIPLE-ZONE

OFF

100*

1 4

BLANK

OFF OFF

ON ON

ON OFF OFF OFF

ON OFF

OFF*

OFF OFF

ON OFF OFF OFF OFF

74 74

85 65

OFF

100*

50 1 4

BLANK

OFF OFF

ON ON

ON OFF OFF

ON OFF

OFF*

OFF OFF

ON OFF

Page 14

ice ports are provided on the liquid and vapor service

valves. Schrader fittings are also provided on the suction and discharge tubes within the compressor section. Dial-ACharge charging cylinder is an accurate device for recharg

ing systems by weight.

A WARNING

Outdoor section service valve gauge ports are not equipped with schrader valves. To prevent personal injury, make sure gauge manifold or port caps are con

nected to the valve gauge ports before moving valves

off fully backseated position. Wear safety glasses and

gloves when handling refrigerant.

A CAUTION

Evacuate and purge BOTH suction and discharge

Schraders of COMPRESSOR SECTION. Purging only from one or from only the outdoor service valves may result in refrigerant being isolated in indoor section due to system refrigerant control valving.

A CAUTION

Compressor damage may occur if system is over charged. Weigh-in all refrigerant.

Initial system charging

The outdoor units are shipped with the base system refrig erant charge for correct operation with a total piping length from indoor section to outdoor section of 25 ft. The remain ing components of the system should be leak-checkefl and evacuated or purged before opening the service valves at the outdoor cod. The procedure described here should be fol lowed for the initial charge:

1. Pressurize the remaining system with R-22 vapor to 100 psig.

A WARNING

Never use oxygen or other flammable gases in a refrig

eration system for leak checking or any other purpose. Personal injury or death can result from doing so.

After refrigeration system has been pressurized, with the appropriate gas, to 100 psig, inspect all compo nents, solder joints, mechanical connections, etc., for

leakage.

3. If a leak is found, do not attempt to repair until all pressure has been reheved from the system. After the pressure has been reheved, make repairs to leaking

component, repressurize system to 100 psig and con

tinue leak checking.

4. After ah components, solder joints, mechaniceJ connec tions, etc. have been leak-checked, reheve ah system pressure and evacuate or purge system.

NOTE: If either refrigerant tubing or unit piping is exposed

to atmospheric conditions for longer than 5 minutes, it must be evacuated to 1000 microns to eliminate contamination and moisture in the system.

5. Slowly open (turn clockwise) both service valves on the outdoor fan coil section allowing the bare system refrigerant cheuge to be released throughout the sys tem. Service valves should be fuhy opened and back seated. Port caps mstahed tightly.

6. Unit is shipped with valve stem(s) frontseated, and caps installed. Replace stem caps after system is opened to refrigerant flow (backseated). Replace caps

finger tight and tighten additional 1/12 turn (20-ft lbs

torque) using a backup wrench on valve body flats to prevent distortion of sheet metal.

7. See refrigerant charging instructions or charging label of outdoor or compressor section for field charge adjustment for piping lengths used.

Full charge replacement

If refrigerant escapes from the system, leak test and evacu ate entire system. Fohow precautions hsted in initial system charging. Weigh-in system base charge plus adjustment for field piping. Refer to charging label on outdoor or compres sor section.

System Startup

A WARNING

DO NOT attempt to manually operate the contactor for

any reason. PersoneJ injury can result.

NOTE: The 38QE system compressor section is equipped

with a crankcase heater. It is recommended that the heater be energized 24 hours prior to starting the unit. To energize crankcase heater set thermostat mode swritches to “off,” turn on power to compressor section to the indoor fan coU and thermostat.

Refer to the HydroTech 2000 Start-up and Service Manual for further instructions before operating system. Leave the thermostat mode switches to ‘OFF’ position until the start up instructions have bjgen>thoroughly and completely read and proper system op®E&on has been confirmed.

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

Tab l5al5a

^ PC 101 Catalog No. 563-964 Printed in U.S.A. Form 38QE-3SI Pg 14 , 5-90 Repiaces: 38QE-2Si