Bard PH1230, PH1236, PH1224 User Manual

INST ALLA TION INSTRUCTIONS

SINGLE P ACKAGE

HEA T PUMPS

MODELS

PH1224 PH1230 PH1236

Bard Manufacturing Company Bryan, Ohio 43506

Since 1914...Moving ahead, just as planned.

Manual : 2100-344 File: Volume II Tab 11 Date: 08-21-98

Contents

Getting Other Informations and Publications ........ 1

General Instructions................................................. 3

Important ................................................................ 3

Shipping Damage .................................................... 3

General ................................................................ 3

Field-Installed Heater Packages (Optional).............. 3

Installation................................................................. 5

Location ................................................................ 5

Typical Installations .................................................. 5

Condensate Drain Trap............................................ 8

Air Filters ................................................................ 8

Wiring – Main Power................................................ 9

Wiring – 24V Low Voltage Control Circuit................ 9

Thermostats........................................................... 10

Thermostat Indicator Lamps ...................................1 1

Emergency Heat Position .......................................1 1

Transformer Taps....................................................1 1

Compressor Cut-Off Thermostat and Outdoor

Thermostat Wiring ..................................................11

Start Up and Operation .......................................... 12

Three Phase Scroll Compressor Start Up

Information............................................................. 12

Sequence of Operation.......................................... 12

Defrost Cycle ......................................................... 12

Start Up Notes ....................................................... 12

Service and Troubleshooting ................................ 14

Service Hints.......................................................... 14

Pressure Service Ports .......................................... 14

Refrigerant Charge ................................................ 14

Fan Blade Settings................................................. 14

Solid State Heat Pump Control

Troubleshooting Procedure.................................... 14

Troubleshooting Guide ........................................... 15

Checking T emperature Sensor Check Out............. 16

Temperature vs. Resistance of

Temperature Sensor Chart..................................... 16

Suction and Discharge Tube Brazing..................... 17

Pressure T ables ..................................................... 18

Wiring Diagrams ............................................. 19 - 21

Figures

Figure 1 Prefabricated Rood Curb

Specifications .......................................... 4

Figure 2 Field Fabricated Curbing......................... 4

Figure 3 Elevated Mounting Platforms .................. 6

Figure 4 Airflow and Service Access

Clearances .............................................. 6

Figure 5 Roof Top Application ............................... 7

Figure 6 Slab Mounting at Ground Level ............... 7

Figure 7 Condensate Drain Trap ........................... 8

Figure 8 Low Voltage Wiring ................................. 9

Figure 9 Compressor Cut-Off Thermostat

Wiring (5 and 10 KW) ............................11

Figure 10 Compressor Cut-Off Thermostat

Wiring )15 KW ONLY) ...........................11

Figure 11 Heat Pump Control Board..................... 13

Figure 12 Fan Blade Setting Dimensions .............. 14

Figure 13 Brazing Diagram ................................... 17

Tables

Table 1 Electrical Data......................................... 2

T able 2 Optional Field Installed Heater

Packages ................................................ 2

T able 3 Optional Field Installed Heater Table....... 2

Table 4 Rated CFM and Rated ESP.................... 3

Table 5 Air Filter Area and Size ........................... 8

Table 6 Thermostat Wire Size ............................. 9

Table 7 Heat Pump Thermostats ....................... 10

Table 8 V olts, KW and Phase - Compressor

Cut-Off Wiring (5 and 10 KW)...............11

Table 9 V olts, KW and Phase - Compressor

Cut-Off Wiring (15 KW ONLY0 .............11

Table 10 Refrigerant Charge ............................... 14

T able 1 1 Pressure T able - Cooling ....................... 18

T able 12 Pressure Table - Heating....................... 18

Getting Other Information and Publications

These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.

National Electrical Code ........................... ANSI/NFPA 70

Standard for the Installation...................... ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for Warm Air .............................ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for .................................ACCA Manual J

Residential Winter and Summer Air Conditioning

Duct Design for Residential......................ACCA Manual D

Winter and Summer Air Conditioning and Equipment Selection

For more information, contact these publishers:

ACCA — Air Conditioning Contractors of America

1712 New Hampshire Ave. N.W. Washington, DC 20009 Telephone: (202) 483-9370 Fax: (202) 234-4721

ANSI — American National Standards Institute

11 West Street, 13th Floor New York, NY 10036 Telephone: (212) 642-4900 Fax: (212) 302-1286

ASHRAE — American Society of Heating Refrigerating, and

Air Conditioning Engineers, Incorporated

1791 Tullie Circle, N.E. Atlanta, GA 30329-2305 Telephone: (404) 636-8400 Fax: (404) 321-5478

Commercial Low Pressure, ....................... ACCA Manual Q

Low Velocity Duct System Design

Load Calculation For Commercial ............ACCA Manual N

Summer and Winter Air Conditioning

NFPA — National Fire Protection Association

Batterymarch Park P.O. Box 9101 Quincy, MA 02269-9901 Telephone: (800) 344-3555 Fax: (617) 984-7057

Manual 2100-344 Page 1

TABLE 1

ELECTRICAL DATA

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4221HP1-802/032352-7914.4152810101 0321HP1-802/032352-7917.7103220101 6321HP1-802/032352-7918.12047288

B-6321HP3-802/032352-7916.5152910101

Maximum time delay fuse or HACR type circuit breaker. HACR type not applicable to 460 volt.

75 degree C cooper wire size, basic unit only.

TABLE 2

OPTIONAL FIELD INSTALLED HEATER PACKAGES

ONLY TO BE USED WITH THE HEAT PUMP MODELS INDICATED

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01A-BP3HE 01A-CP3HE 51A-CP3HE

90B-BP3HE 51B-BP3HE

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esahP4221HP0321HP6321HPB-6321HP

1/042

X X

3/042

X X

TABLE 3

OPTIONAL FIELD-INSTALLED ELECTRIC HEATER TABLE

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01A-BP3HE 50A-CP3HE

01A-CP3HE 51A-CP3HE

90B-BP3HE 51B-BP3HE

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1-802/04201001,4305.7000,627.1413506601 1-802/042

1-802/042

3-802/042

Time delay fuses or “HACR” type circuit breakers must be used for 60 and smaller sizes. Standard fuses or circuit breakers are suitable for sizes 70 and larger. 480V circuit breakers are not “HACR” type.

Based on wire suitable for 75° C. Other wiring materials must be rated for marked “Minimum Circuit Ampacity” or greater.

Based upon T able 250-95 of N.E.C. 1993. See electrical data for basic heat pump for Circuit A wiring specification requirements.

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001,71 001,43 002,15

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57.6

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000,32 004,83

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8.02

7.14

5.2606/03

7.12

2.63

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1 1 1

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01 01

IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly size fuses

and conductor wires in accordance with the National Electrical Code and all existing local codes.

Manual 2100-344 Page 2

GENERAL INSTRUCTIONS

IMPORTANT

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. Any heat pump is more critical of proper operating charge and an adequate duct system than a straight air conditioning unit. All duct work, supply and return ducts, must be properly sized for the design air flow requirement of the equipment. ACCA is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

GENERAL

The refrigerant system is completely assembled and charged. All internal wiring is complete.

The unit is designed for use with or without duct work. Flanges are provided for attaching the supply and return ducts.

These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.

These instructions and any instructions packaged with any separate equipment required to make up the entire heat pump system should be carefully read before beginning the installation. Note particularly “Starting Procedure” and any tags and/or labels attached to the equipment.

FIELD INSTALLED HEATER PACKAGES (OPTIONAL)

These packaged heat pumps are manufactured without supplementary electric heaters. Supplementary heaters EH3P series (to fit PH1224, PH1230, and PH1236) are available for simple, fast, field installation.

A separate field power circuit is required for the supplementary heaters.

IMPORTANT: Refer to Table 4 when designing duct

work for maximum available static pressure with heater installed.

Refer to the electrical data shown on pages 2 and 3 for proper application information on all available heater combinations and what units they can be used with. It also shows the applicable circuit ampacities, fuse size, and wire size for each heater combination.

Refer to the installation instructions packed with the heater for details on how to insert it into the basic unit.

TABLE 4

RATED CFM AND

EXTERNAL STATIC PRESSURE (ESP)

WET COIL (COOLING)

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4221HP00802.MFC088-086 0321HP000103.MFC0011-577 6321HP001102.MFC0121-577

MFC

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While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made.

Manual 2100-344 Page 3

MIS-1177

FIGURE 1

PREFABRICATED ROOF CURB SPECIFICATIONS

HEAVY GAUGE GALVANIZED WITH WOOD NAILING STRIP, WELDED/LEAKPROOF

ONE PIECE CONSTRUCTION – READY TO INSTALL

CURB AND ROOF DETAILS

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bruCAB*CDEF *J*H

300-24098/3-084/1-044/1-738/3-838/3-53244/3-418/1-9106EHR

*Duct Sizing Information Return Air Dimension “C” is length Supply Air Dimension “C” is length Return Air Dimension “H” is width Supply Sir Dimension “J” is width

FIGURE 2

FIELD FABRICATED CURBING

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,0321HP,4221HP

6321HP

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0321HP

6321HP

MIS-1178

Manual 2100-344 Page 4

INSTALLATION

LOCATION

GENERAL

The unit must be located outside, or in a well ventilated area. It must not be in the space being heated or cooled. A sound absorbing material should be considered if the unit is to be installed in such a position or location that might cause transmission of sound or vibration to the living area or adjacent buildings.

SLAB MOUNTING

In areas where winter temperatures DO NOT go below 32° F for periods over twelve hours, the unit may be slab mounted at grade level. When installing unit at grade level, install on a concrete slab at least four inches above finished grade level. Slab should have a slope tolerance away from the building structure of at lease 1/4 inch per foot, while being level from side to side. This will prevent ice buildup under the unit during defrost cycles. Place slab in a location where runoff water from higher ground will not collect around unit. See Figure 3.

A minimum of 18 inches should be provided between the coil inlet and any building surfaces. Provide at least four feet between coil outlet and any building wall, fences or other vertical structures. Provide a minimum of three feet clearance on the service access side of the unit. See Figure 4

ROOF MOUNTING

When a unit is installed in areas where low ambient temperatures or strong winter winds exist, it should be placed so prevailing winter winds are not in direct line with the heat pump coil. If this is not possible, a wind barrier should be constructed. Place barrier 24 inches from the coil inlet side of the unit and in the direction of prevailing winds. Size barrier at least the same height and width as the unit. This may be necessary on ground level installations, also. See Figure 5.

WINTER INSTALLATION BELOW 32°F

In areas where winter conditions go below 32°F for extended periods, the unit must be elevated above the mounting surface to prevent snowfall or defrost ice accumulation from interfering with the operation of the unit. A minimum of twelve inch elevation is recommended, while greater elevation may be required for areas of high snow accumulation. Poured concrete, steel framework, brick, cement block, etc., can be utilized to construct a suitable raised mounting platform. See Figure 6.

DUCT WORK

Refer to Tables 4, 5 and 5A when designing duct work for maximum static pressure available with the specific model and heater package being installed. Unit duct work is suitable for 0” clearance to combustible materials.

TYPICAL INSTALLATIONS

ROOF MOUNTED

sturdy base on the roof of the building. Return air to the unit is brought through a single return grille (grilles with built-in filters are best since they enable easy access for filter changing). Return air ducts are attached to the lower section of the front panel. Supply air is brought from the unit to attic duct work or to a furred down hall. Supply air duct is attached to the top of the front panel.

CAUTION: All outdoor duct work must be thoroughly

insulated and weatherproofed. All attic duct work must be thoroughly insulated. Two inch thick insulation with suitable vapor barrier is recommended for both outdoor and attic runs.

In roof top installation, as in all installations, the heat pump must be level from side to side. However, the unit should have a pitch along the length to assure complete external drainage of precipitation and of defrost condensate.

CRAWL SPACE

2. space must be well insulated and provided with a vapor barrier. In addition, the crawl space must be thoroughly ventilated and provided with a good vapor barrier as a ground cover. It is most desirable to install the unit outdoors rather than inside the crawl space, so that it will be readily accessible for service. In addition, it is necessary to dispose of the condensate from the outdoor coil on the heating cycle, and this is virtually impossible with the unit installed inside the crawl space.

SLAB MOUNTED AT GROUND LEVEL

type installation is ideal for homes with a slab floor construction where a roof mounted unit is not desired. The supply and return duct work can be run through a furred closet space.

THROUGH THE WALL

requires a suitable framework to be fabricated capable of withstanding the unit weight. Normally the unit will be insulated so as to minimize supply and return duct work.

OTHER INSTALLATIONS

installations are possible with the packaged heat pump. No matter what the installation, always consider the following facts:

A. Insure that the discharge air is not obstructed in any

way so as to cause operation difficulties.

B. The indoor coil drain pan is equipped with a

coupling that must be piped through a condensate drain trap to a suitable drain.

C. Always mount the unit is such a position that it may

be easily reached for servicing and maintenance.

D. Insure that the unit is clear so that proper air flow

over the outdoor coil will be maintained.

If this unit is operated in cooling below a 65° outdoor ambient temperature, the installation of low ambient controls (CMA-6) to unit is required.

– The unit is mounted on a

– Duct work installed in crawl

– This

– This type installation

– Many other

Manual 2100-344 Page 5

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