Haier HR18D1VAR, 24D1VAR, 30D1VAR, 36D1VAR, 42D1VAR Schematic

...

Central Air Conditioning

Part Number: AC-8888-130

SERVICE MANUAL

Models

HR18D1VAR HR24D1VAR HR30D1VAR HR36D1VAR HR42D1VAR HR48D1VAR HR60D1VAR

Features

z

Efficient performance and economical operation

zBenchmark hermetic compressor design

zHaier Hi-Efficiency aluminium fin and copper tube design

zCompact design of outdoor unit

zDurable construction

z Quick, easy installation and service

Heat pump, Premium Series HR13-D1

z

z Powder coated full metal jacket

Manual code: SYJS----AM-----004-05---Rev.4

Edition: 2006-11-21

Central Air Conditioning Model: Heat Pump, HR13-D1

CONTENTS

1. DESCRIPTION OF PRODUCTS & FEATURES……………………...3

2. PHYSICAL AND ELECTRICAL SPECIFICATIONS……………….....5

3. SAFETY PRECAUTION…………………………………………….…...8

4. SYSTEM COMPONENTS AND FUNCTIONS ………………………..8

5. ELECTRICAL CONTROL DEVICES…………………………….……..10

6. APPLICATION…………………..……………………………………..…11

7. REFRIGERANT DIAGRAM ………………………………..…….……..13

8. INSTALLATION INSTRUCTIONS………………………....…………...13

9. MAINTENANCE INSTRUCTIONS………………………………..…….23

10. SERVICE AND TROUBLESHOOTING ……………………...……….23

11. WIRING DIAGRAMS……………………………….…………………...40

! Warning !

The equipment detailed in this manual should be installed and

serviced only by qualified technicians who are familiar with the safety

procedures required for this work and who have the proper tools,

testing equipment and replacement parts.

During testing, it may be necessary to work with circuits with live

electrical components. Only individuals with proper training that can

follow all electrical safety precautions should perform this work.

Failure to follow all safety precautions could result in property

damage, serious injury, or death.

Central Air Conditioning Model: Heat Pump, HR13-D1

1. DESCRIPTION OF PRODUCTS & FEATURES

1.1 Air conditioning

This manual discusses ‘split’ central air conditioning and indoor coils. “Split” central air condition

system refers to the physical location of major air conditioning components. The split system air

conditioning are manufactured to standards of quality and performance.They are 13 SEER(Seasonal

Engery Efficiency Ratio) which meet or exceed the standards imposed by efficiency legislated and

therefore represent both good value today and for years to come. The current air conditioning system

use scroll and reciprocating compressors. This gives the air conditioning a durable compressor which

needs less external protection, while increasing the unit efficiency in cooling mode.

1.2 NOMENCLATURE FOR MODEL NUMBER

Model number explanation---indoor unit

H B 24 00 V A 1 M 20 P

Haier Blower unit

B:Blower unit

Brand

symbol

C:Evaporator W:Wall moun

-ted unit

Nominal

capacity in

(1000) Btu/h

24:

24000BTU/h

60:

60000BTU/h

Electric

heater

00: No;

05: 5KW;

10: 10KW;

15:15KW; 20: 20KW

Electric

Designation

Y:575V-3Ph-60Hz; V:208/230V-1Ph60Hz; C:208/230V-3Ph60Hz; D:460V-3Ph60Hz; A:115V,1 Ph,60Hz

Efficiency

code

A:10 SEER

A/C coil

D:13 SEER

A/C coil

E:14 SEER

A/C coil

Design

series

1: 1st

Generation;

2: 2nd

Generation;

Airflow

configuration

M:Multi-

direction

V:Vertical

H:Horizontal

Unit

Width(in.)

17:17”[432] 20:20”[497] 22:22”[559] 25:25"[625]

Continuation

P: Powder

paint

E: EC motor

Model number explanation---outdoor unit

(

(AIER

Brand

symbol:

Haier

3YSTEM

TYPE

Condensing

Unit;

R: Heat

Pump



.OMINAL

CAPACITYIN

"TUH

24˖

24000BTU/h;

60˖

60000BTU/h

$

3%%2

DESIGNATION

A:10SEER;

B:11SEER;

C:12SEER;

D:13SEER

E:14SEER;

F:15SEER;

G:16SEER;

H:17SEER

I:18SEER

Table 1-1

$ESIGN

SERIES

1˖1st

Generatio

2: 2nd

Generatio

7DEOH

6!

%LECTRIC$ESIGNATION "ODYSTYLE

A˖115V, 1Ph, 60Hz;

C: 208/230V, 3Ph,

60Hz˗

D: 460V, 3Ph, 60Hz;

V: 208/230V, 1Ph,

60Hz;

Y: 575V, 3Ph, 60Hz

standard

style

2ESERVED



S=Scroll,

R=Recipr

ocating

(1*,1((5,1*)($785(6

COPPER TUBE/ALUMINUM FIN COILS: %RWKLQGRRUDQGRXWGRRUFRLOVDUHGHVLJQHGDQGPDWFKHGWR

optimize heat transfer while PLQLPL]LQJVL]HDQGFRVWZLWKLQFUHDVHGGXUDELOLW\DQGUHOLDELOLW\

Central Air Conditioning Model: Heat Pump, HR13-D1

CABINETS:

a durable finish

Fig.1-1

Fig.1-2

Constructed of powder painted galvanized steel to provide and protection for the outdoor coil.

FAN GUARD AND MOTOR BRACKET:

Welded powder coated guard with independent rod and band motor bracket, unit top has a deep draw fan venturi for efficient air flow.

SERVICE VALVES: Facilitates unit servicing and provides a reliable and

safe access to measure unit

pressures .

Fig.1-3

BASE PAN: This deep-drawn base keeps the bottom of the coil off the ground, has weep holes to allow for complete drainage.

Fig.1-4

Bi-flow filter drier: Prolong unit life and system reliability by keeping refrigerant clean and dry.

Fig.1-5

FLOWCHECK DISTRIBUTORS: Outdoor units use the Flowcheck Distributor to act as an open check valve in the cooling mode.

ACCESSORIES:

LOW AMBIENT CONTROL: This factory installed option allows for low temperature operation in

the cooling cycle ambient temperatures down to 0  operate in cooling when outdoor

commercial applications.

START COMPONENTS : This option provides additional starting for covering a wide range of voltages and system pressure combinations. This option maybe required on reciprocating compressors with

flowcheck piston metering.

SERVICE VALVES AND PRESSURE PORTS: Mounted external to the cabinet for easy access at installation and during service.

ambient temperatures below 65

. This control should be installed in units that

, and is recommended for all

Model: Heat Pump, HR13-D1

Central Air Conditioning

SEER 13.0 13.0 13.0 13.0 13.0 13.0 13.0

Total Input Watts ˄Cooling˅ 1,730 2,180 2,460 3,060 3800 4090 5150

3.3 3.4 3.4 3.3 3.5 3.5 3.4

16,500 22,500 25,500 32,000 41,000 44,000 55,000

Heating Capacity (Btu/h) (8.3ć)

Heating COP (8.3ć)

Heating HSPF 7.8 7.8 7.8 7.8 7.8 7.8 7.8

Total Input Watts ˄Heating˅ 1460.0 1940.0 2200.0 2840.0 3430.0 3680.0 4740.0

Airflow Rate (CFM) 1800 1800 2700 3200 3600 4000 4300

Electrical

Voltage - Phase - Frequency (Hz) 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60

Minimum Circuit Amps 8.6 11.6 12.8 16.1 20.6 21.7 33.7

Compressor

Maximum Overload Amps 15 20 20 25 35 35.0 55

Type / Maker Reciprocating Reciprocating Reciprocating Reciprocating Reciprocating Reciprocating Scroll

Model Number H20J153ABCA H20J213ABCA H20J223ABCA H20J293ABCA H20J383ABCA H20J403ABCA H23R543ABCA

RLA (Rated Load Amps) 6.2 8.6 9.2 11.7 14.9 15.8 25.0

LRA (Locked Rotor Amps) 41.0 60.0 60.0 73 90.0 90.0 150.0

Internal Overload Protection Yes Yes Yes Yes Yes Yes Yes

Fan Motor

Crankcase Heater Yes Yes Yes Yes Yes Yes N/A

RLA (Rated Load Amps) 0.86 1.1 1.3 1.43 2.0 2.0 2.5

Rated Horse Power (hp) 1/8 1/6 1/4 1/3 1/3 1/3 1/2

Nominal RPM 1000 840 850 1070 960 880 1000

Input Watts 180.0 200.0 280 310 340 390 510

Fan

12600 17280 20160 25200 30240 33120 39600

HR18D1VAR HR24D1VAR HR30D1VAR HR36D1VAR HR42D1VAR HR48D1VAR HR60D1VAR

Specifications Subject to Change without Prior Notice

Model Number

Comments 1.5-Ton Outdoor HP 2-Ton Outdoor HP 2.5-Ton Outdoor HP 3-Ton Outdoor HP 3.5-Ton Outdoor HP 4-Ton Outdoor HP 5-Ton Outdoor HP

2. PHYSICAL AND ELECTRICAL SPECIFICATIONS

Model Status New Model New Model New Model New Model New Model New Model New Model

17,500 24,000 28,000 35,000 42,000 46,000 55000

HB2400VD1M20 HB2400VD1M20 HB3600VD1M22 HB3600VD1M22 HB4800VD1M22 HB4800VD1M22 HB6000VD1M22-E

HW18**VD1V22(-P) HW24**VD1V22(-P) HW30**VD1V22(-P)

Cooling Capacity (Btu/h)

Performance

with Matching Indoor Unit (Note 3)

Net Sensible Capacity (Btu/h)

Net Latent Capacity (Btu/h) 4,900 6,720 7,840 9,800 11,760 12,880 15,400

18" 23" 24" 23" 24" 24" 24"

No. of Blade 3 333333

Fan Material Zinc-Coated Steel ALUMINIUM ALUMINIUM ALUMINIUM ALUMINIUM Plastic-Coated Steel Plastic-Coated Steel

Diameter (In)

Model: Heat Pump, HR13-D1

Central Air Conditioning

3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"

3/4" 3/4" 3/4" 7/8" 7/8" 7/8" 7/8"

115 115 115 115 115 115 115

Note 1 ) NoNoNoNoNoNoNo

Height 32 1/5 28 1/4 32 3/16 32 3/16 32 3/16 36 1/8 44

Width 23 3/8 30 5/8 30 5/8 30 5/8 30 5/8 30 5/8 30 5/8

Full metal jacket Yes Yes Yes Yes Yes Yes Yes

Wire grill Optional Optional Optional Optional Optional Optional Optional

Plastic mesh Optional Optional Optional Optional Optional Optional Optional

Coil guard

Number or Rows 1 111222

Tube spacings (V x H) (In) 1 x 0.85 1 x 0.85 1 x 0.85 1 x 0.85 1 x 0.85 1 x 0.85 1 x 0.85

Fins per Inch - FPI 21 21 21 21 17 17 21

Fin Type Enhanced fins Enhanced fins Enhanced fins Enhanced fins Enhanced fins Enhanced fins Enhanced fins

Tube OD and Type 3/8" Grooved 3/8" Grooved 3/8" Grooved 3/8" Grooved 3/8" Grooved 3/8" Grooved 3/8" Grooved

Gross Finned Face Area (Sq Ft) 10.8 16.0 18.4 18.4 18.4 20.9 25.8

Number of Circuits (In/Out) 4/4 4/4 5/5 5/5 7/7 9/9 10/10

Cabinet color White White White White White White White

Top cover Stamped sheet metal Stamped sheet metal Stamped sheet metal Stamped sheet metal Stamped sheet metal Stamped sheet metal Stamped sheet metal

Condenser coil

Exterior Appearance

Body style /

Basepan Deep Drawn, Elevated Deep Drawn, Elevated Deep Drawn, Elevated Deep Drawn, Elevated Deep Drawn, Elevated Deep Drawn, Elevated Deep Drawn, Elevated

Service panel Easy Access Easy Access Easy Access Easy Access Easy Access Easy Access Easy Access

Features Lug.

Galvanized Steel Cabinet Yes Yes Yes Yes Yes Yes Yes

Coil Design Haier Enhanced Coil Haier Enhanced Coil Haier Enhanced Coil Haier Enhanced Coil Haier Enhanced Coil Haier Enhanced Coil Haier Enhanced Coil

Fully Enclosed Motor Yes Yes Yes Yes Yes Yes Yes

Removable Top Grill Assembly Yes Yes Yes Yes Yes Yes Yes

Elevated Base Pan Yes Yes Yes Yes Yes Yes Yes

High and Low Pressure Switches Yes Yes Yes Yes Yes Yes Yes

Filter Dryer Yes Yes Yes Yes Yes Yes Yes

Full, Reusable Service Valves Yes Yes Yes Yes Yes Yes Yes

Easy Service Access Yes Yes Yes Yes Yes Yes Yes

Corrosion Resistant Outside Screws Yes Yes Yes Yes Yes Yes Yes

Accessories

Start Assist Kit No No No No No No No

Room Thermostat Optional Optional Optional Optional Optional Optional Optional

Low Ambient Kit Optional Optional Optional Optional Optional Optional Optional

Compressor Time Delay No No No No No No No

Compressor Blanket Kit No No No No No No No

Piston Yes Yes Yes Yes Yes Yes Yes

Fan Delay Kit (

Depth 23 3/8 30 5/8 30 5/8 30 5/8 30 5/8 30 5/8 30 5/8

Liquid Line Dimension (In)

Vapor Line Dimension (In)

Max Refrigerant Line Length (Ft)

Unit

(inches)

Dimensions

Dimensions and Installation

Cubic Volume (Cu. Ft) 10.18 15.33 17.46 17.46 17.46 19.60 23.87

Outdoor above Indoor

Unit 70 70 70 70 70 70 70

Indoor above Outdoor

Unit 50 50 50 50 50 50 50

(Ft)

Max

Vertical

Distance

Line

Refrigerant

Model: Heat Pump, HR13-D1

Central Air Conditioning

00VD1V22(-P), HW1805VD1V22(-P), HW1808VD1V22(-P) and

167.0 203.0 207.0 220.0 258.0 271.0 315.0

178.0 218.0 225.0 238.0 275.0 289.0 325.0

Orifice (059/062) Orifice (078/071) Orifice (085/081) Orifice (085/078) Orifice(097/081) Orifice(097/081) Orifice(096/081)

Note 2 ) R-22 / 125 R-22/117 R-22/133 R-22/136 R-22/186 R-22/196 R-22/314

Service Valves Re-usable Re-usable Re-usable Re-usable Re-usable Re-usable Re-usable

Min Clearances 10" sides/18" service 10" sides/18" service 10" sides/18" service 10" sides/18" service 10" sides/18" service 10" sides/18" service 10" sides/18" service

Refrigerant Connection Type Sweat Sweat Sweat Sweat Sweat Sweat Sweat

Refrigerant Type / Charge (Oz) (

Metering device (Piston size)Cooling /heating

Weight (lbs)

Performance Certification ARI ARI ARI ARI ARI ARI ARI

Agency Approvals

Net

Ship

Safety Approvals UL/cUL UL/cUL UL/cUL UL/cUL UL/cUL UL/cUL UL/cUL

Carton Type Basiloid Basiloid Basiloid Basiloid Basiloid Basiloid Basiloid

Packaging

Shipping

Height 33 1/8 29 1/2 33 1/2 33 1/2 33 1/2 37 1/2 45 5/16

Width 25 32 1/2 32 1/2 32 1/2 32 1/2 32 1/2 32 1/2

Carton

Dimensions

5555555

Depth 25 32 1/2 32 1/2 32 1/2 32 1/2 32 1/2 32 1/2

"*" in the HW Air Handler model is stand for 00, 05, 08 or 10. For example, for HR18D1VAR, the matching Air Handler can be HW18

HW1810VD1V22(-P)

120-second fan delay for air handler

Notes:

R-22 Charge for the outdoor unit with matching indoor unit and 25' line set.

Noise level dB(A) 65.5 63.5 66.7 68.6 69.7 64 66.2

Parts

Warranty(Haier Brand Only)

Cubic Volume (Cu. Ft) 11.98 18.03 20.48 20.48 20.48 22.92 27.7

Compressor

Central Air Conditioning Model: Heat Pump, HR13-D1

3. SAFETY PRECAUTIONS

CAUTION: please read all instructions prior to

product. WARNING: THE MANUFACTURER’S WARRANTY DOES NOT COVER DAMAGE TO CAUSED BY

THE USE OF ANSUTHORIZED COMPONENTS OR ACCESSORIES, THE USE OF SUCH

UNAUTHORIZED COMPONENTS OR ACCESSORIES MAY ENDANGER LIFE AND PROPERTY. THE MANUFACTURER DISCLAIMS ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULTING FROM THE USE OF SUCH UNAUTHORIZED COMPONENTS OR ACCESSORIES

ƽ Always use industry-recognized service practices in the maintenance, adjustment and repair of the

products covered in this manual.

ƽ Always wear safety glasses when handling refrigerant and peforming brazing operations. ƽ Follow the manufacturer’s instructions when making repairs, installing replacement parts and

performing system maintenance.

ƽ Use only authorized factory parts.

installing, operating, maintaining or repairing the

4. SYSTEM COMPONENTS AND FUNCTIONS

This section describes the various air conditioning components, their purpose and operation. This section is only a guide and does not consider all components that could be found on an air conditioner in the field.

COMPRESSORS (Fig. 4-1)

The heart of any refrigerant system is the compressor. It is a pump that causes refrigerant to flow. There are several different types of compressors, but all use electricity to turn an electric motor to drive a pump. Central air conditioners use two types of compressors. The first is the enhanced reciprocating compres-

-sor. it operates with an offset crankshaft and pistons, and resembles an internal combustion engine. the driving force is supplied by an electric motor turning the crankshaft and forcing pistons up and down in cylinders where valves control the flow of refrigerant. The valves provide a seal between high and low pressure sides of the system. If the valves are damaged, the compressor’s function and efficiency is reduced.

Reciprocating type compressor Scroll type compressor

Fig.4-1 Generally, liquid refrigerant is suspected if valve damage occurs. Some compressors can tolerate the presence of small amounts of liquid refrigerant in the return gas, but this condition must be avoided through proper refrigrant control. Returning refrigerant cools the compressor motor and surrounding the

motor with low pressure

The scroll compressor used a helix (similar in shape to a snail shell) within a similar stationary helix, the moving helix rotates so that the space between the two constantly decreases as the gas moves toward the center of the Scrolls. The returning refrigerant gas first cools the motor, then flows into the suction intake of the compressor scroll. The discharge gas leaves from the center of the helix and exits the compressor. The lower part of the shell should be cool to the touch. Current single phase units use two types of compressors. The design of the two compressors types is quite different. But they function the same way. Scroll units do not need start components or crank

-case heaters. The reciprocating compressor may need both. Both types benefit from using a time-delay. time delays prevent thermostat short cycling and momentary power interruptions from damaging the

compressor.

gas gives it the name of “low-side” shell compressor

to move refrigerant. When paired

Central Air Conditioning Model: Heat Pump, HR13-D1

Both compressor types are protected internally against over-current and over-temperature conditions. Some scroll compressors have an additional thermostat mounted externally in series electrically with the contactor coil.

FAN AND BLOWER MOTORS (Fig. 4-2 and Fig. 4-3)

The outdoor component of split system contains an fan motor. These PSC (permanent split capacitor) motors are single speed and drive a propeller fan. The motor mounts to the unit top with the shaft up, This fan pulls outdoor air through the outdoor coil.

Fan

Fig.4-2

To access the condenser fan or motor, carefully remove the unit top, a service loop is provided on the

motor wiring for easier access.

Fan and motor assembly

Fig4-3

METERING DEVICES (Fig. 4-4)

Flow-Check Pistons One type of refrigerant metering device is the flow-check piston. It has two functions. First it acts as a refrigerant metering device controlling refrigerant flow into the evaporator. Second, it acts as an open check valve when refrigerant flows in the opposite direction. When refrigerant enters the device from the square end, the piston seats and forces all refrigerant throug the carefully sized hole in the center of the piston. This orifice functions as a metering device controlling the amount of refrigerant flow, with flow in the opposite direction, pressure moves the piston off the seat and liquid refrigerant flows around the piston. Using too small a piston starves the coils of refrigerant. A piston that is too large floods coils. Mismatching indoor and outdoor units of split systems affects performance, efficiency, charging and reliability.

PROPER MATCH OF UNIT AND PISTON SIZES

Split air conditioning indoor and outdoor units must be carefully matched to balance the heat transfer indoors with the heat resected or claimed by the outdoor unit. Manufacturer's

specification sheets and

installation manuals should be followed to insure proper match. Matched systems are listed on the

internet at ARI. ORG.

Combinations for indoor and outdoor units using a distributor and flowcheck are shown in the application

table 6-2.

Distributor assy

Fig.4-4

Central Air Conditioning Model: Heat Pump, HR13-D1

REFRIGERANT CIRCUIT (Fig. 4-5)

All 13SEER units outdoor coils are multi-circuit. Refrigerent gas or liquid is uniformly distributed to from 4 to 10 circuits to improve heat transfer and reduce capacity losses due to pressure drops.

Fig.4-5

SERVICE VALVES

There are two types of service valve used on these air conditioning units. They are the service port valve or “Schrader valve” and the refrigerant line valve. The Schrader valve is like a valve in an automobile tire. The stem or core is removable with a flexible seal at its base held closed with a spring. Schrader valves allow a technician to connect gages to the system with a minimum loss of charge. Use a cap with an inner seal to prevent leakage and keep dirt and moisture from entering the system. Refrigerant control valves allow the outdoor unit to be isolated into from the balance of the system. In split systems, these valves also hold the charge in the outdoor section from factory.

5.ELECTRICAL CONTROL DEVICES

THERMOSTATS

Thermostats are the most obvious control in the air conditioning system because these controls are accessible by the consumer. Contact your local distributor for information on part numbers of various manual changeover, auto changeover and set-back thermostats or see the thermostat and subbase selection information found in the wiring diagram booklet. In the cooling mode, the thermostat calls for cooling by energizing the compressor contactor and the indoor blower control. The indoor blower can operate continuously by setting the thermostat subbase fan switch to the “ON” position.

PROTECTION DEVICES

Protection for the unit begins with the installation of appropriate fuses or circuit breakers by the installing contractor. Breaker or fuse size is governed by the National Electrical Code and local code. AMP draw requirements for each unit are found in the Specifications.

OVERLOADS AND LIMITS

Overloads protect against over-current or over-temperature conditions. Those located in the outdoor unit include the automatic reset internal overload in the fan motor and the compressor automatic reset internal overload. Such controls are not serviceable but their operation may influence service troubleshooting .For example, the compressor internal overload may stay open for several hours .A technician may incorrectly diagnose this as an open compressor winding.

HIGH PRESSURE CUT OUT SWITCH (optional) (Fig. 5-1)

The high pressure cut-out is a pressure activated switch. It opens an electrical circuit when the refrigerant pressure exceeds a pre-determined limit of 440 to 460 p.s.i.g. When pressure becomes normal, the switch restores automatically.

Fig. 5 -1

Central Air Conditioning Model: Heat Pump, HR13-D1

RELAYS

Relays provide a method for control switching. Relays may switch either low(24VAC) or line voltage. Generally relays used in air conditioning use 24VAC coils. Contact voltage may be either low or line voltage.

COMPREESSOR CONTACTOR

The coil uses 24 volts but the contacts carry line voltage .The heater contactor is a large relay, which controls the compressor and the outdoor fan operation. Some contactor use single pole contacts ,while others use 2-pole or 3-pole contacts. Single-pole contactors break only one side of the power feed to the compressor and outdoor fan. The other side remains connected to the power source. The 2-pole or 3-pole contactor breaks power to all sides of the compressor and outdoor fan. CAUTION: WHEN THERE IS A SINGLE POLE CONTACTOR, ONE SIDE OF A 240 V.A.C.CIRCUIT REMAINS HOT. THIS MEANS THAT THE WIRING IN THE HIGH VOLTAGE CIRCUIT MAY HAVE A POTENTIAL OF 120V.A.C.TO GROUD. BEFORE SERVICING THE UNIT, ALWAYS TURN OFF POWDER AT THE UNIT DISCONNECT SWITCH.

OPTIONAL DELAYS AND KITS

A Time-Delay in the compressor contactor lowcontrol circuit allows time for system pressure to equalize before re-starting the compressor. This delay uses solid state circuitry to measure the time since the power was interrupted and is set for approximately 3 minutes. It is not field adjustable. This is a delay on break timer.

Defrost PCB

Fig.5-2

START KITS(OPTIONAL)

This special relay uses the EMF generated by the compressor start windings to take a start capacitor out of the circuit. The relay and its companion capacitor can start the compressor at low voltages and against higher pressure, such as those caused by non-bleed port expansion valves.

Start kit components should match the recommended ratings and functions of those provided by the reciprocating compressor manufactorer. See Specifications start components.

Start kits are not normally required with scroll compressors. The operating characteristics of the scroll compressor make a start kit unnecessary.

6. APPLICATION

Before specifying any air conditioning equipment, a survey of the structure and a heat gain calculation must be made. A heat gain calculation involves identifying all surfaces and openings that gain heat from the surrounding air and quantifying that heat gain. The heat calculation also calculates the extra heaty load caused by sunlight and by humidity removal. These factors must be considered before selection an air conditioning system to provide year round comfort. The Air Conditioning Contractors of America (ACCA) J Manual method of load calculation is one recognized procedure for determining the

cooling load.

The cooling load calculation determines the unit size. There are two capacities that enable the equipment to provide comfort. The first is sensible capacity.

measured on the dry bulb thermometer.

Sensible heat is the heat energy

Central Air Conditioning Model: Heat Pump, HR13-D1

The second form of heat is called latent heat. This is heat held by the moisture in the air. Removing this moisture does not affect a thermometer. However, removing the latent heat in the air greatly increase comfort. A properly sized unit removes both forms of heat, producing a comfortable conditions, An oversized system cycles on and off quickly and does not properly remove humidify, producing uncomfortable. The indoor and outdoor equipment combination should be matched by the manufacturer and based on engineering data. After the proper equipment combination has been selected, satisfying both sensible and latent conditioning requirements, the system must be properly installed. Proper installation with cerefully distributed air through adequate duct work will provided a comfortable living space.

There are several factors that installers must consider.

ƽ Outdoor unit location ƽ Proper equipment evacuation ƽ Outdoor unit refrigerant charge ƽ Indoor unit air flow ƽ Indoor unit blower speed ƽ Supply and return air duct design and sizing ƽ System air balancing ƽ Diffuser and return air grille location and sizing

Unit Dimensions

Model: HR18-60D1VAR

----D1VAR HR18 HR24 HR30 HR36 HR42 HR48 HR60

D 23-3/8" 30 5/8" 30 5/8" 30 5/8" 30 5/8" 30 5/8"

W 23-3/8" 30 5/8" 30 5/8" 30 5/8" 30 5/8" 30 5/8"

H 32 1/5" 28 1/4" 32 3/16" 32 3/16" 32 3/16" 36 1/8" 44"

Table 6-1

30 5/8"

7. REFRIGERANT SYSTEM DIAGRAM refer Figure 7

Central Air Conditioning Model: Heat Pump, HR13-D1

Piston sizes and indoor fan speed:

1RWHWKHSLVWRQSODFHGLQWKHRXWGRRUXQLWSDFNDJHER[LVXVHGIRULQGRRUXQLWZKHQFRROLQJ 

2XWGRRUXQLW

+5'9$5 +5'9$5 +5'9$5 +5'9$5 +5'9$5  +5'9$5 +5'9$5

The air distribution system has the greatest effect. On the quality of the installation and the owner satisfaction, the duct system is totally in the responsibility of the contractor. These are numerous thchnical associations

and reference that recommend correct procedures. The correct air quantity is critical for correct air conditioning system. Proper operation, efficiency, compressor life and humidity control depend on the correct balance between indoor load and outdoor unit capacity. High indoor air flow reduces system dehumidification capacity, and can leave the space humid and uncomfoltable. Low indoor air flow reduces total capacity, and can causes coil icing. Improper air balance will affect system

performance and customer's satisfaction and can cause premature component failure. Air conditioning requires a specified air flow. Each ton of air conditioning requires 400 cubic feet of air per minute (400CFM/TON). Duct design and construction should be done with care. System performance can be lowered dramatically through bad planning or workmanship. In cooling, a hot attic can cause a temperature gain of 3ein the return duct and 4ein the supply duct. This can reduce the cooling capacity of an air

conditioning system by as much as 30%.This means a loss of almost one ton of cooling capacity from a three ton system. Air leakage of only 3% in a return duct can cause a 5% loss in system capacity. 3% leakage on a three ton system is only 30 CFM. Two or three unsealed joints can cause a leak of this size. Sealing the return and supply ducts result in full system capacity and lower operating costs. Effective duct insulation is essential to prevent loss of capacity and sweating ducts in the cooling mode. Duct systems installed in the conditioned space can be left uninsulated , but a dense 1/2” fiberglass duct liner reduces blower and air noises, and prevents sweating ducts when humidity levels are high. Supply and return duct systems in attics and crawl spaces require a minimum 1” of dense duct liner or 2” fiberglass wrap with a sealed vapor barrier. A leaky vapor barrier results in duct sweating, causing wet insulation Heat transfer through poorly insulated systems can result in over 50%

ducts also results in rusting that leads to premature duct failure. Carefully follow the industry practices to

insure a well designed duct system. Air supply diffusers must be selected and located carefully. They must be sized and positioned to deliver treated air along the perimeter of the space. If they are too small for their intended air flow, they can be noisy. If they are not located properly, they can cause drafts in the rooms. Return air grilles

properly sized to carry air back to the blower. If they are too small they also cause noise. The installers should balance the air distribution system to ensure proper air flow to all rooms in the home. This

ensures a comfortable living space.

does not insulated.

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must be

8. INSTALLATION INSTRUCTIONS

! WARNING

These instructions are intended as an aid to qualified, service and instalolation personnel for proper installation adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or service this equipment. Failure to follow these instructions may result in improper installation,

service or maintenance and could possibly result in fire, electrical shock, property damage.

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