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INSTALLATION INSTRUCTIONS
Wall Mounted Package
W18HY-A
Heat Pump
Models:
W24HY-A
W24HY-B
W24HY-C
W24HYDA
W24HYDB
W24HYDC
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
W30HY-A
W30HY-B
W30HY-C
W30HYDA
W30HYDB
W30HYDC
Manual:
Supersedes: NEW
Date:
W36HY-A
W36HY-B
W36HY-C
W36HYDA
W36HYDB
W36HYDC
2100-790
6-29-23
Page
1 of 49
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Table of Contents
Troubleshooting
Related Manuals for Bard W24HY-A
Summary of Contents for Bard W24HY-A
- Page 1 Heat Pump Models: W18HY-A W24HY-A W30HY-A W36HY-A W24HY-B W30HY-B W36HY-B W24HY-C W30HY-C W36HY-C W24HYDA W30HYDA W36HYDA W24HYDB W30HYDB W36HYDB W24HYDC W30HYDC W36HYDC Bard Manufacturing Company, Inc. Manual: 2100-790 Supersedes: NEW Bryan, Ohio 43506 Date: 6-29-23 www.bardhvac.com Page 1 of 49...
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Page 2: Table Of Contents
CONTENTS Safety Instructions ..........4 Start Up ..............27 General Information ..........10 General ............27 Heat Pump Wall Mount Model Nomenclature ..10 Topping Off System Charge ......... 27 Shipping Damage ..........10 Safety Practices ..........27 General ............. 10 Important Installer Note ........ - Page 3 TABLES FIGURES Table 1 Clearance Required for Service Access Figure 1 Fresh Air Damper ........ 12 and Adequate Condenser Airflow ..16 Figure 2 Unit Dimensions ......... 16 Table 2 Minimum Clearances Required to Figure 3A Mounting Instructions – W18H, W24H .. 17 Combustible Materials ......
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Page 4: Safety Instructions
SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and follow all safety messages. ANSI Z535.5 Definitions: DANGER: Indicate[s] a hazardous situation which, if not avoided, will result in death or serious injury. - Page 5 WARNING CAUTION Sharp metallic edges. Electrical shock hazard. Have a properly trained individual perform Take care and wear appropriate protective these tasks. devices to avoid accidental contact with sharp edges. Failure to do so could result in electric shock Failure to do so can result in personal injury. or death.
- Page 6 IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of explosion, fire, death, electric shock, scalding or injury to persons when using this product, follow basic precautions, including the following: GENERAL · The equipment covered in this manual is to be installed by trained, experienced service and installation technicians.
- Page 7 INSTRUCTIONS DE SÉCURITÉ LIRE TOUTES LES INSTRUCTIONS AVANT UTILISATION Votre sécurité et celle des autres sont très importantes. Nous avons fourni de nombreux messages de sécurité importants dans ce manuel et sur votre appareil. Lisez et suivez toujours tous les messages de sécurité. Définitions ANSI Z535.5 : DANGER : Indique une situation dangereuse qui, si elle n’est pas évitée, entraînera certainement la mort ou des blessures graves.
- Page 8 AVERTISSEMENT ATTENTION Arêtes métalliques vives. Risque de choc électrique. Ces tâches doivent être réalisées par une Faites attention et portez des dispositifs de personne parfaitement qualifiée et formée. protection appropriés pour éviter tout contact accidentel avec des arêtes vives. Le non-respect de cette consigne peut entraîner Le non-respect de cette consigne peut entraîner des chocs électriques ou la mort.
- Page 9 INSTRUCTIONS DE SÉCURITÉ IMPORTANTES AVERTISSEMENT Pour réduire le risque d’explosion, d’incendie, de décès, de choc électrique, d’échaudure ou de blessures pour les personnes lors de l’utilisation de ce produit, suivez les précautions de base, notamment les suivantes : GÉNÉRALITÉS · L’équipement couvert dans ce manuel doit être installé par des techniciens de service et d’installation formés et expérimentés.
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Page 10: General Information
GENERAL INFORMATION General Additional Publications The equipment covered in this manual is to be installed These publications can help when installing the heat by trained, experienced service and installation pump. They can usually be found at the local library technicians. or purchased directly from the publisher. -
Page 11: Heat Pump Wall Mount Model Nomenclature
Heat Pump Wall Mount Model Nomenclature – MODEL SERIES CONTROL X – None (Standard) CAPACITY E – Low Ambient Control 18 – 1½ Ton F – Filter Replacement Pressure 24 – 2 Ton Switch, Alarm Relay & Low 30 – 2½ Ton Ambient Control 36 –... -
Page 12: Duct Work
Any grille that meets with 5/8" louver criteria may be Fresh Air Damper used. It is recommended that Bard Return Air Grille Kit RG-2W through RG-3W or RFG-2W through RFG- 3W be installed when no return duct is used. Contact distributor or factory for ordering information. -
Page 13: Installation
INSTALLATION Basic Installation Design and NOTE: Before mounting the heat pump unit, consideration should be given to the Application Planning condensate removal from the outdoor coil Successful unit installations require proper planning when in heating mode. The unit must be and site inspection before installation begins. -
Page 14: Indoor Return Airflow
5/8". It is recommended that a airflow requirement of the equipment. Air Conditioning Bard Return Air Grille Kit be installed that is designed Contractors of America (ACCA) is an excellent guide to specifically for the wall mount product. Contact the proper sizing. -
Page 15: Unit Installation
Unit Installation flashing is supplied for field use and is mounted to the back of the unit for shipping. Remove rain Make sure to have the proper tools at the work site that flashing before locating the unit against wall. Top are needed for unit installation. -
Page 16: Clearance Required For Service Access And Adequate Condenser Airflow
2. Field ventilation installation with the unit installed requires 40" on the left or right side of the unit. 3. Bard recommends a minimum of 10' between the unit front condenser air outlet and solid objects including fences, walls, bushes and other airflow obstructions. - Page 17 Manual 2100-790 Page 17 of 49...
- Page 18 Manual 2100-790 Page 18 of 49...
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Page 19: All Models
FIGURE 4 Electric Heat Clearance – All Models Typical Building Wall Frame Outside Sheeting Inside Sheeting Supply Air Unit Duct 1/4" Min. Supply Air Duct See Note Below Flange of Wall Note: Side section view of supply air duct for wall mounted unit showing 1/4"... - Page 20 FIGURE 5 Wall Mounting Instructions WALL STRUCTURE SEE FIGURES 3A-B – MOUNTING INSTRUCTIONS FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR DUCT OPENING OPENING RETURN AIR RETURN AIR RETURN AIR OPENING OPENING OPENING BOTTOM MOUNTING WOOD OR STEEL SIDING BRACKET.
- Page 21 FIGURE 7 Common Wall Mounting Installations Non-Ducted Installations Ducted Installations Unit is Unit is Ceiling Ceiling sealed to sealed to wall. wall. Supply Air Duct Adjustable Supply Grille Optional Dropped Ceiling Wall Wall Mount Mount Fixed Blade Unit Unit Fixed Blade Return Grille Return Grille Indoor Area Indoor Area...
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Page 22: Wiring - Main Power
Wiring – Main Power the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are: WARNING RANGE 253 – 216 215 – 197 Electrical shock hazard. NOTE: The voltage should be measured at the field power connection point in the unit and while Do not operate this equipment without an... -
Page 23: Dehumidification Feature
Balanced Climate™ Feature (Standard on All Models) fan on/off to maintain desired liquid pressure while modulating LAC operation is factory adjusted and slows All units are equipped with the capability of running the condenser fan speed (rpm). in Balanced Climate mode. This mode is designed to Outdoor Temperature Switch and Freeze Protection enhance the comfort level by reducing the indoor airflow Thermostat... -
Page 24: Wall Thermostats
TABLE 4 Wall Thermostats Part Number Predominate Features 8403-060 3 Stage Cool; 3 Stage Heat – HP or Conventional; Programmable/Non-Programmable; Auto or Manual Changeover; (1120-445) Dehumidification Output 2 Stage Cool, 3 Stage Heat – Heat Pump; 2 Stage Cool, 2 Stage Heat – Conventional; Programmable/Non-Programmable; 8403-090 Auto or Manual Changeover 2 Stage Cool, 3 Stage Heat –... - Page 25 FIGURE 8 Thermostat Connections Completestat Model #CS9B-THOA or Model #CS9BE-THOA W1/E Thermostat YO/D W1/E Bard #8403-060 Optional CO2 Controller Bard Part #8403-096 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug MIS-4063 F ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed.
- Page 26 Mechanical Humidistat T4 Pro 8403-095 8403-047 ELECTRONIC HUMIDISTAT T6 Pro 8403-090 or 8403-092 8403-100 U/DEH U/DEH ELECTRONIC HUMIDISTAT Optional CO2 Controller Bard Part #8403-096 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug MIS-4064 H ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed.
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Page 27: Start Up
Topping Off System Charge 10. Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly If a leak has occurred in the system, Bard at warmer temperatures. Once a cylinder or line is Manufacturing recommends reclaiming, evacuating... -
Page 28: High And Low Pressure Switch
If If a fault condition occurs, reverse two of the supply the Bard heat pump system is being set up in a typical leads to the unit. Do not reverse any of the unit factory environment where 72°F is the lowest cooling setpoint,... -
Page 29: Defrost Cycle
1/4" QC, to short between the SPEEDUP If the unit is being installed with any ventilation terminals to accelerate the HPC timer and initiate package, a Bard LAC kit must be installed. Failure defrost. to utilize an LAC with any heat pump can cause coil Be careful not to touch any other terminals with the freeze up. -
Page 30: High Pressure Switch Operation
There is also a 5-minute compressor time delay To change a Coremax valve without first removing the function built into the HPC. This is to protect the refrigerant, a special tool is required which can be obtained at www.fastestinc.com/en/SCCA07H. See the compressor from short cycling conditions. -
Page 31: Figure 10 Defrost Control Board
FIGURE 10 Defrost Control Board TIME (SEC) LOW PRESSURE BYPASS TIMER SWITCH 120* *(FACTORY SETTING 120 SECONDS) ACCUMULATED DEFROST TIME TIMER (FACTORY SETTING 60 MIN.) MIS-2668 A Model Setting W18HY W24HY W30HY W36HY Manual 2100-790 Page 31 of 49... -
Page 32: Service
SERVICE Solid State Heat Pump Control NOTE: If there was no power to 24 volt transformer, Troubleshooting Procedure the compressor and outdoor fan motor will not start for 5 minutes. This is because of the 1. NOTE: A thorough understanding of the defrost compressor short cycle protection. -
Page 33: Checking Temperature Sensor Outside Unit Circuit
Checking Temperature Sensor Outside 3. Check resistance reading to chart of resistance. Use sensor ambient temperature. (Tolerance of part Unit Circuit is ± 10%.) 1. Disconnect temperature sensor from board and 4. If sensor resistance reads very low, sensor is from outdoor coil. -
Page 34: Troubleshooting Nidec Selectech Series Ecm Motors
“Continuous Fan” only problem identified. on the “G” terminal. NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C 2. If the system is excessively noisy, does not appear contain the X13-Series Motors. -
Page 35: Model Selectech Communication Diagnostics
TROUBLESHOOTING GE X13-SERIES ECM2.3 ™ MOTORS CONT’D. Model SelecTech Communication Diagnostics B. If the motor has proper high voltage as identified above (If the Motor Is Not Running 2. Initiate a demand from the thermostat and check the The SelecTech motor is communicated through 24 VAC Model X13 Communication Diagnostics #1), proper low voltage to a programmed voltage between the common and the appropriate motor... -
Page 36: Fan Blade Setting Dimensions
Fan Blade Setting Dimensions Removal of Fan Shroud The correct fan blade setting for proper air delivery 1. Disconnect all power to the unit. across the outdoor coil is shown in Figure 13. Refer to 2. Remove the screws holding both grilles, one on Table 10 for unit specific dimension. -
Page 37: Table 11A Cooling Pressure
TABLE 11A Cooling Pressure Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side W18HY 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side 80/67 W24HY High Side Low Side... -
Page 38: Cooling Pressure - Balanced Climate Airflow
TABLE 12 Cooling Pressure – Balanced Climate Airflow Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side W18HY 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side W24HY 80/67... -
Page 39: Table 13
TABLE 13 Electrical Specifications Single Circuit Dual Circuit Rated Maximum No. Field Minimum Volts External Fuse Maximum Model Power Circuit & or Circuit Minimum External Fuse Circuits Ampacity Phase Breaker Circuit Ampacity or Circuit Breaker Ckt. Ckt. Ckt. Ckt. W18HY-A00, A0Z 230/208-1 W24HY-A00, A0Z 230/208-1... -
Page 40: Setting Unit Airflow
24VAC signals from the low voltage terminal block located inside the control panel by a thermostat or other controlling device. Each speed tap is programmed by Bard at the factory to different motor torque settings (see Figure 14). Manual 2100-790... -
Page 41: Speed Tap 1 - Vent/Blower Only
TABLE 15 Blower Speeds for Unit Operational Modes Thermostat Inputs – 24VAC Speed Taps Unit Compressor Blower Speed Operation Operation B/W1 3-4-5 Blower Only Vent/Blower Only Balanced Climate Cooling Balanced Climate Full Load Cool Lo/Med/Hi Balanced Climate Balanced Climate Heat Pump Heating Full Load Heat Pump Lo/Med/Hi Heating... -
Page 42: Dirty Filter Switch
Dirty Filter Switch 3. With air filters installed and switch initially set at 0.4" W.C. (see Step 2 under Dirty Filter 1. Disconnect all power to the unit. Remove control Switch), begin restricting the air filter of the unit panel outer cover and upper front panel. using a piece of cardboard under the filters until 2. - Page 43 FIGURE 17 Adjusting Dirty Filter Switch TURN CLOCKWISE TO INCREASE RESTRICTION AMOUNT REQUIRED TO ACTIVATE THE SWITCH AND COUNTER-CLOCKWISE TO DECREASE RESTRICTION AMOUNT MIS-4086 B Manual 2100-790 Page 43 of 49...
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Page 44: Table 16
TABLE 16 Indoor Blower Performance Default LO Optional MED Balanced Climate Optional HI Cooling Cooling & Heating/ Cooling & Heating E.S.P. Speed & Heating Speed Ventilation Speed Speed (In. H Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil Dry Coil Wet Coil... -
Page 45: Table 10 Fan Blade Dimension
TABLE 17 Maximum ESP of Operation Electric Heat Only Model W18H W24H W30H W36H -A04 -A05 -A08 -A10 -A15 -B05 -B09 -C05 -C09 Values shown are for units equipped with 2" pleated MERV 13 filter. TABLE 18 Electric Heat Total KW and BTUH @ Field-Supplied Voltage Electric Nominal @ 230V (1) -
Page 46: Table 13 Electrical Specifications
TABLE 19 Optional Accessories Part Number EHWH018A-A04 EHWH018A-A08 EHWH024A-A04 EHWH024A-A08 EHWH024A-B05 EHWH024A-C05 EHWH030A-A05 EHWH030A-A10 Heater Kits EHWH030A-B05 EHWH030A-B09 EHWH030A-C05 EHWH030A-C09 EHWH036A-A05 EHWH036A-A10 EHWH036A-A15 EHWH036A-B09 WMCB-02A WMCB-03A WMCB-04A Circuit Breaker (WMCB) & WMCB-05A Pull Disconnect (WMPD) WMCB-02B WMCB-03B WMPD-01C Manual 2100-790 Page 46 of 49... -
Page 47: Table 20 Vent And Control Options
TABLE 20 Vent and Control Options Part Number Description CMC-15 Start Relay (PTCR based) j CMC-31 Dirty Filter Sensor Kit CMC-34 Alarm Relay CMC-36 Crankcase Heater – 230V CMC-37 Crankcase Heater – 460V CMH-28 Outdoor Thermostat – Heat Pump (ODT) CMH-33 Low Ambient Control Modulating –... - Page 48 GRAPH 1 W18HY FAD-NE2, 3 W/O Exhaust Ventilation Delivery GRAPH 2 W24HY FAD-NE2, 3 W/O Exhaust Ventilation Delivery Manual 2100-790 Page 48 of 49...
- Page 49 GRAPH 3 W30HY FAD-NE2, 3 W/O Exhaust Ventilation Delivery GRAPH 4 W36HY FAD-NE2, 3 W/O Exhaust Ventilation Delivery Manual 2100-790 Page 49 of 49...