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Manual 2100-703H 

Page 

15 of 42

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:
 

TAP RANGE

 

240 

253 – 216

 

208 

220 – 187

NOTE:

  The voltage should be measured at the field 

power connection point in the unit and while 

the unit is operating at full load (maximum 

amperage operating condition).

For low voltage wiring, an 18 gauge copper, color-coded 
cable is recommended. See Table 7 on page 17 for 
more information.

Low Voltage Connections

These units use a 24-volt AC low voltage circuit. 

C

 terminal is 

24VAC common and is grounded

.

G

 terminal is the 

indoor blower input

.

Y1

 terminal is the 

1st Stage input for cooling.

Y2

 terminal is the 

2nd Stage compressor input for 

cooling (if equipped with an economizer).

B/W1

 terminal is the 

reversing valve input. 

The 

reversing valve must be energized for heating mode.

W2

 terminal is the 

1st stage electric heat

 (if equipped).

W3

 terminal is the 

2nd stage of electric heat 

or 

emergency heat input 

(if equipped).

 

Two stages of electric 

heat are not available on units with dehumidification.

A

 terminal is the 

ventilation input

. This terminal 

energizes any factory-installed ventilation option and 
indoor blower.

D

 terminal is the dehumidification input. If installed, this 

terminal energizes any factory-installed dehumidification 
option.

L

 terminal is

 

24 volt alarm active output

.

For units equipped with an alarm relay:

1 terminal

 is the 

normally closed contact on the relay.

2 terminal 

is the 

normally open contact on the relay.

3 terminal

 is the 

common contact on the relay.

DDC Connections

11

 terminal is

 

filter switch, common contact 

on 

auxiliary terminal strip

 (F Control option only)

12

 terminal is

 

filter switch, normally open contact 

on 

auxiliary terminal strip 

(F Control option only)

Unit Shutdown Feature (Standard on All Models)

The RT terminal is the 24VAC transformer output, 
and the R terminal is the 24VAC hot terminal for the 
operation of the equipment. RT and R are connected 
with a brass jumper bar which can be removed and RT 
and R connected to an external NC (normally closed) 
contact such as a fire/smoke detector that will cause 
shutdown of the equipment upon activation.

Electrical shock hazard.

Do not operate this equipment without an 

earth ground attached and always disconnect 

the remote electric power supplies before 

servicing.
Electrical shock can result in serious injury or 

death.

!

WARNING

Refer to the unit rating plate for wire sizing information 
and maximum fuse or circuit breaker size. Each outdoor 
unit is marked with a “Minimum Circuit Ampacity”. 
This means that the field wiring used must be sized 
to carry that amount of current. Depending on the 
installed KW of electric heat, there may be two field 
power circuits required. If this is the case, the unit 
serial plate will so indicate. All models are suitable 
only for connection with copper wire. Each unit and/or 
wiring diagram will be marked “Use Copper Conductors 
Only”. These instructions 

must be

 

adhered to. Refer to 

the National Electrical Code (NEC) for complete current 
carrying capacity data on the various insulation grades 
of wiring material. All wiring must conform to NEC and 
all local codes.
The electrical data lists fuse and wire sizes (75°C 
copper) for all models including the most commonly 
used heater sizes. Also shown are the number of field 
power circuits required for the various models with 
heaters.
The unit rating plate lists a maximum fuse or circuit 
breaker that is to be used with the equipment. The 
correct size must be used for proper circuit protection 
and also to assure that there will be no nuisance 
tripping due to the momentary high starting current of 
the compressor motor.
The disconnect access door on this unit may be locked 
to prevent unauthorized access to the disconnect. To 
convert for the locking capability, bend the tab located 
in the bottom left-hand corner of the disconnect 
opening under the disconnect access panel straight 
out. This tab will now line up with the slot in the door. 
When shut, a padlock may be placed through the hole 
in the tab preventing entry.
See page 21 for important information on three phase 
scroll compressor start ups.
See Table 13 on page 32 for electrical specifications.

Wiring – Low Voltage

All 230/208V 1 phase and 3 phase equipment have 
dual primary voltage transformers. All equipment leaves 

Summary of Contents for W30HB Series

Page 1: ...IONS W18HB A W24HB A W24HB B W24HB C W30HB A W30HB B W30HB C W36HB A W36HB B W36HB C Bard Manufacturing Company Inc Bryan Ohio 43506 www bardhvac com Manual 2100 703H Supersedes 2100 703G Date 3 1 21...

Page 2: ...tallation 8 Materials Tool List 8 Wall Preparation 8 Wall Mount Installation to Wall Surface 8 Wiring Main Power 15 Wiring Low Voltage 15 Low Voltage Connections 15 Unit Shutdown Feature 15 Balanced C...

Page 3: ...tallation 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 S...

Page 4: ...on of Air Conditioning and Ventilating Systems of Other Than Residence Type NFPA No 90A and Residence Type Warm Air Heating and Air Conditioning Systems NFPA No 90B Where local regulations are at a va...

Page 5: ...utor or factory for ordering information If using a return air filter grille filters must be of sufficient size to allow a maximum velocity of 400 fpm NOTE If no return air duct is used applicable ins...

Page 6: ...ensate removal from the outdoor coil when in heating mode The unit must be mounted high enough above grade to ensure that ice will not build up under the unit and come into contact with the base of th...

Page 7: ...upply duct must be used in the wall cavity to transition between the supply collar on the unit and the supply louver grille in the room The duct must be properly insulated in order to conserve energy...

Page 8: ...hind the unit that is against the wall A bottom mounting bracket attached to the skid for shipping is provided for ease of installation but is not required Review all requirements listed on unit label...

Page 9: ...er Access Panel Standard flush vent door for non ERV Econ models 1 Ventilation Air F W 5 88 G All dimensions are in inches Dimensional drawings are not to scale TABLE 1 Clearance Required for Service...

Page 10: ...NG AT TIME OF INSTALLATION OPENING MIS 3157 A ENTIRE LENGTH OF TOP TOP NOTES OF CAULKING ALONG PANEL FOAM AIR SEAL WALL STRUCTURE WALL HEATER ACCESS RAIN FLASHING SILICONE CAULKING BE PLACED BEHIND IS...

Page 11: ...SHING AT TIME OF INSTALLATION THE SIDE MOUNTING FLANGES AND UNDER SILICONE CAULKING BE PLACED BEHIND IS ON OPPOSITE LEFT SIDE OPENING CONTROLS AND HEATER ACCESS DUCT RETURN AIR Right Side View SEAL WI...

Page 12: ...aintain minimum 1 4 clearance between the supply air duct and combustible materials in the first 3 of ducting Failure to do so could result in fire causing damage injury or death WARNING SIDE SECTION...

Page 13: ...NIT RETURN AIR WALL STRUCTURE RETURN AIR SUPPLY AIR FACTORY SUPPLIED RAIN FLASHING SUPPLY AIR MIS 548 A SIDE VIEW I A C K E 1 000 B 1 000 SUPPLY DUCT OVER FRAME INTERIOR FINISHED WALL ALL AROUND DUCT...

Page 14: ...IC SUPPLYAIRDUCT SUPPLYAIRDUCT SUPPLYAIRDUCT RETURNAIR OPENINGW GRILLE OUTSIDE W GRILLE FALSEWALLINSTALLATION CEILING RAIN FLASHING RAIN FLASHING SUPPLYDUCTMAYBELOCATEDINANATTIC ORBELOWCEILINGRAFTERSA...

Page 15: ...ed to an external NC normally closed contact such as a fire smoke detector that will cause shutdown of the equipment upon activation Electrical shock hazard Do not operate this equipment without an ea...

Page 16: ...o control dehumidification operation Ventilation Features Optional See ventilation instructions provided with unit for low voltage wiring Low Ambient Control LAC The low ambient control is a pressure...

Page 17: ...igent Learning Control BACnet compatible Ethernet compatible 8403 095 T4 Pro 1 stage Cool 2 stage Heat Heat Pump 1 stage Cool 1 stage Heat Conventional Programmable Non Programmable Electronic Auto or...

Page 18: ...used 6 control optional for ECON only see vent instruction manuals 0 10 VDC modulating C02 control signal for modulating ventilation 5 8 and fan set to be programmed fan for the A output to function d...

Page 19: ...n add jumper if optional CO2 controller is not used Vent will run while blower is energized For ECON CRV V an additional wire change is required See install manual 4 Factory installed jumper Remove ju...

Page 20: ...or single component refrigerant The remaining refrigerant charge in the system may be used after leaks have occurred and then top off the charge by utilizing the pressure charts on the inner control p...

Page 21: ...dition occurs reverse two of the supply leads to the unit Do not reverse any of the unit factory wires as damage may occur Condenser Fan Operation NOTE Certain models may be equipped with a low ambien...

Page 22: ...ot gas passing through the outdoor coil melts any accumulated frost When the temperature rises to approximately 57 F the coil temperature sensor will send a signal to the heat pump control which will...

Page 23: ...nd there is no Y1 at the compressor control module first check to make sure that either the optional vent is plugged into the vent connection plug or the supplied jumper plug is in place The unit will...

Page 24: ...rol Board 120 SW 1 SW 2 TIME SEC OFF OFF ON ON OFF ON OFF ON 30 60 180 MIS 2668 A OFF LOW PRESSURE BYPASS TIMER SWITCH FACTORY SETTING 120 SECONDS ACCUMULATED DEFROST TIME TIMER FACTORY SETTING 60 MIN...

Page 25: ...rmer is bad or the unit wiring is incorrect 10 Check for Compressor output signal Is there 24 volts AC between CC C Yes go to Step 12 No go to Step 13 11 No Y compressor input signal Check thermostat...

Page 26: ...6 0 144374 22 0 43554 60 0 15310 98 0 6098 15 0 139576 23 0 42295 61 0 14921 99 0 5961 14 0 134956 24 0 41077 62 0 14544 100 0 5827 13 0 130506 25 0 39898 63 0 14177 101 0 5697 12 0 126219 26 0 38757...

Page 27: ...onnections Manual 2100 467H FIGURE 10 NOTE Bard Models PA13242 PA13302 PA13362 A B PA13422 A B C PA13482 A B C PA13602 A B C contain the X13 Series Motors TROUBLESHOOTING GE X13 SERIES ECM2 3 MOTORS I...

Page 28: ...failed and will require replacement 24VAC R Signal through thermostat output 24VAC Common 24VAC Common 24VAC R Signal through thermostat output Model SelecTech Communication Diagnostics The SelecTech...

Page 29: ...refrigerant charge quantity The pressure tables on the following pages show nominal pressures for the units Since many installation specific situations can affect the pressure readings this informati...

Page 30: ...150 414 152 440 154 467 156 495 157 524 159 554 161 585 162 618 TABLE 11B Heating Pressure Air Temperature Entering Outdoor Coil F Model Indoor Heating 0 5 10 15 17 20 25 30 35 40 45 47 50 55 60 65 W1...

Page 31: ...85 72 Low Side High Side 125 302 131 327 136 352 141 377 145 403 148 430 151 458 153 486 154 514 155 543 155 573 155 609 W24HB 75 62 Low Side High Side 116 294 118 314 121 336 123 359 125 382 127 406...

Page 32: ...14 12 10 These Minimum Circuit Ampacity values are to be used for sizing the field power conductors Refer to the National Electrical code latest version Article 310 for power conductor sizing CAUTION...

Page 33: ...ult W24HB 800 10 700 950 W30HB 1000 15 900 1125 W36HB 1100 15 1000 1200 Rated CFM and ESP on factory speed connection NOTE Be sure to adjust the system static or blower speed to maintain airflows abov...

Page 34: ...Cooling X X X X Balanced Climate On Full Load Cool X X X X X X Lo Med Hi On Balanced Climate Heat Pump Heating X X X X X Balanced Climate On Full Load Heat Pump Heating X X X X X X X Lo Med Hi On 1st...

Page 35: ...justment 1 Apply power to the unit 2 Turn the unit indoor blower on energize R G on low voltage terminal board 3 With air filters installed and switch initially set at 0 4 W C see Step 2 under Dirty F...

Page 36: ...2100 703H Page 36 of 42 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...

Page 37: ...01 793 778 915 898 1040 1014 0 25 777 761 899 878 1017 981 0 30 758 742 880 856 988 944 0 40 716 701 831 806 912 860 0 50 664 655 767 747 814 761 W30HB 0 00 856 823 1083 1063 Dedicated electric heat s...

Page 38: ...Speed W30H W36H A00 0Z A05 A10 A15 50 40 35 35 50 50 40 40 W30H W36H B00 0Z B05 B09 50 40 30 50 50 35 W30H W36H C00 0Z C05 C09 50 40 30 50 50 40 Models 240V 1 208V 1 240V 3 208V 3 460V 3 KW Amps BTUH...

Page 39: ...EHW18H A04 X EHW18H A08 X EHW2HB A04 X EHW2HB A08 X EHW2HB B05 X EHW2HB C05 X EHW3HB A05 X EHW3HB A10 X EHW3HB A15 X EHW3HB B05 X EHW3HB B09 X X EHW3HB C05 X X EHW3HB C09 X X EHW30HB A05 X EHW30HB A10...

Page 40: ...X SK 111 Start Kit Hard Start X X X BOP2 Blank Off Plate X X FAD NE2 Fresh Air Damper No Exhaust X X FAD BE2 Fresh Air Damper Barometric Exhaust X X CRV F2 Commercial Ventilator On Off Spring Return X...

Page 41: ...Manual 2100 703H Page 41 of 42 GRAPH 1 W18HB FAD NE2 3 W O Exhaust Ventilation Delivery GRAPH 2 W24HB FAD NE2 3 W O Exhaust Ventilation Delivery...

Page 42: ...Manual 2100 703H Page 42 of 42 GRAPH 3 W30HB FAD NE2 3 W O Exhaust Ventilation Delivery GRAPH 4 W36HB FAD NE2 3 W O Exhaust Ventilation Delivery...

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