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INSTALLATION INSTRUCTIONS
11EER Step Capacity 2 Stage
Wall Mount Air Conditioner
W3SAC-A
W3SAC-B
W3SAC-C
W3SACDA
W3SACDB
W3SACDC
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Models:
W4SAC-A
W4SAC-B
W4SAC-C
W4SACDA
W4SACDB
W4SACDC
W5SAC-A
W5SAC-B
W5SAC-C
W5SACDA
W5SACDB
W5SACDC
Manual:
2100-720E
Supersedes: 2100-720D
Date:
3-1-21
Page
1 of 42
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Summary of Contents for Bard W3SAC-A
- Page 1 Wall Mount Air Conditioner Models: W3SAC-A W4SAC-A W5SAC-A W3SAC-B W4SAC-B W5SAC-B W3SAC-C W4SAC-C W5SAC-C W3SACDA W4SACDA W5SACDA W3SACDB W4SACDB W5SACDB W3SACDC W4SACDC W5SACDC Bard Manufacturing Company, Inc. Manual: 2100-720E Bryan, Ohio 43506 Supersedes: 2100-720D Date: 3-1-21 www.bardhvac.com Page 1 of 42...
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications ..3 Short Cycle/Delay-on-Break ......24 Wall Mount General Information ......4 Low Pressure Detection ........24 Air Conditioner Wall Mount Model Nomenclature ..4 High Pressure Detection ........25 Test Mode ............25 Shipping Damage .......... -
Page 3: Getting Other Information And Publications
Figure 20 Programmable Thermostat Table 6 Humidity Controls ....... 20 Connections ........21 Table 7 Controllers ........20 Figure 21 Non-Programmable Thermostat Table 8 Thermostat Wire Size ......20 Connections ........22 Table 9 Fan Blade Dimensions ......30 Figure 22 8201-169 Compressor Control Module ...25 Table 10A 2nd Stage Cooling Pressures Figure 23 Motor Connections ...... -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE – MODEL SERIES CONTROL MODULES (See Spec. Sheet S3598) CAPACITY COIL OPTIONS 3 – 3 Ton X – Standard 4 – 4 Ton 1 – Phenolic Coated Evaporator 5 – 5 Ton 2 –... -
Page 5: Duct Work
5/8". Any grille that meets with 5/8" louver criteria may be used. It is recommended that Bard Return Air Grille Kits RG5 or RFG5 be installed when no return duct is used. Contact distributor or factory for ordering information. -
Page 6: Switching Filter Sizes
FIGURE 3 2. Locate the filter support brackets and remove the four (4) screws holding them to the top of the Removing Second Filter control panel (see Figure 6). FIGURE 6 Remove Four Screws 3. Reverse the order for new filter installation. 3. -
Page 7: Fresh Air Intake
6. Install the right 2" filter first followed by the left Fresh Air Intake filter (see Figures 9 and 10). All units are built with fresh air inlet louvers punched NOTE: When installing new filters, make sure that in the side grilles. airflow arrows on filters point up. -
Page 8: Installation
Make sure that the service Bard recommends at least 2' between solid objects panels of the unit are accessible. Inspect wall surfaces and return grilles or registers. Ductwork may be used to... -
Page 9: Free Blow Applications
5/8". It is recommended that a airflow requirement of the equipment. Air Conditioning Bard Return Air Grille Kit is installed that is designed Contractors of America (ACCA) is an excellent guide specifically for the wall mount product. Contact the to proper sizing. -
Page 10: Wall Preparation
• Appropriate safety gear including gloves and safety 2. Locate and mark bolt hole locations and bottom glasses mounting bracket location. Install bottom mounting bracket with field-supplied fasteners to • 5/16" hex bit with drill driver wall if it is to be used (optional). Bracket must be •... -
Page 11: Figure 12 Vent Installation/Removal Clearance Required
TABLE 1 TABLE 2 Clearance Required for Service Access and Minimum Clearances Required Adequate Condenser Airflow to Combustible Materials Left Right Discharge – Model Supply Air Duct (1st 3') Cabinet Model Side* Side* Front W3SAC W3SAC W4SAC 1/4" 0" W4SAC 20"... -
Page 12: Figure 13 Unit Dimensions
FIGURE 13 Unit Dimensions Supply Return Width Depth Height W3SAC 42.00 25.52 84.75 9.88 29.88 15.88 29.88 43.88 12.63 39.06 30.06 43.25 26.94 55.59 52.59 8.82 43.00 1.44 16.00 1.88 W4SAC W5SAC 42.00 25.52 92.88 9.88 29.88 15.88 29.88 43.88 12.63 45.00 30.06 49.25 35.06 61.72 58.72 8.82 43.00 1.44... -
Page 13: Figure 14 Mounting Instructions
FIGURE 14 Mounting Instructions SEAL WITH BEAD UNITS UNITS REQUIRED DIMESIONS REQUIRED DIMESIONS OF CAULKING ALONG REQUIRED DIMESIONS TO REQUIRED DIMESIONS TO ENTIRE LENGTH OF MAINTAIN 1/4" MIN. CLEARANCE MAINTAIN 1/4" MIN. CLEARANCE 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 16 1 7/8 16 1 7/8... -
Page 14: Figure 15 Electric Heat Clearance
FIGURE 15 Electric Heat Clearance NOTE 1: SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4" CLEARANCE TO COMBUSTIBLE SURFACES. WARNI NG Fire hazard. Maintain minimum 1/4" clearance between the supply air duct and combustible materials in the first 3' of ducting. -
Page 15: Figure 16 Wall Mounting Instructions
FIGURE 16 Wall Mounting Instructions See Figure 14 Mounting Instructions FACTORY SUPPLIED RAIN FLASHING. WALL STRUCTURE MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR OPENING RETURN AIR OPENING WOOD OR STEEL SIDING BOTTOM MOUNTING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. CONCRETE BLOCK WALL INSTALLATION WOOD FRAME WALL INSTALLATION SIDE VIEW... -
Page 16: Figure 18 Common Wall Mounting Installations
FIGURE 18 Common Wall Mounting Installations SUPPLY DUCT MAY BE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN RAIN RAIN FLASHING RAFTERS FLASHING RAFTERS FINISHED CEILING SURFACE SUPPLY AIR DUCT SUPPLY AIR DUCT OPENING WITH GRILLE FINISHED CEILING SURFACE RETURN AIR RETURN AIR OPENING WITH... -
Page 17: Wiring - Main Power
Wiring – Main Power the number of field power circuits required for the various models with heaters. The unit rating plate lists Main electrical power must be supplied to the unit a “Maximum Time Delay Relay Fuse” or circuit breaker from a clean, reliable power source. -
Page 18: Wiring - Low Voltage
Wiring – Low Voltage TABLE 3 Additional Low Voltage Connections (if applicable) All 230/208V 1 phase and 3 phase equipment have dual primary voltage transformers. All equipment leaves Terminal Unit Description the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. -
Page 19: Dehumidification Feature
Dehumidification Feature (Optional) See Table 4 for low voltage connections for DDC control. The D terminal is the 24VAC input for dehumidification TABLE 4 operation on dehumidification hot gas reheat equipped Low Voltage Connections for DDC Control units. When 24VAC is applied to the D terminal, a 3-way valve solenoid is energized. -
Page 20: Table 5A Wall Thermostats - 2 Stage
TABLE 5A Wall Thermostats – 2 Stage (No Balanced Climate) Part Number Predominate Features 8403-059 2 stage Cool, 2 stage Heat; Electronic Non-Programmable; HP or Conventional (Default: AC); Auto or Manual (TH5220D1219/U) changeover 8403-090 2 stage Cool, 3 stage Heat – Heat Pump; 2 stage Cool, 2 stage Heat – Conventional; Programmable/Non- (T6 Pro) Programmable Electronic;... -
Page 21: Figure 20 Programmable Thermostat Connections
FIGURE 20 Programmable Thermostat Connections Completestat Model #CS9B-THOA or Model #CS9BE-THOA W1/E Optional CO2 Controller Bard Part #8403-096 Thermostat W1/E YO/D Bard #8403-060 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed. -
Page 22: Figure 21 Non-Programmable Thermostat Connections
FIGURE 21 Non-Programmable Thermostat Connections Units With Dehumidification 8403-038 Mechanical Humidistat T4 Pro 8403-089 T6 Pro 8403-090 8403-047 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 ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed. -
Page 23: Start Up
1. Caution owner/operator to maintain clean air filters Topping Off System Charge at all times and also not to needlessly close off If a leak has occurred in the system, Bard supply and return air registers. This reduces airflow Manufacturing recommends reclaiming, evacuating... -
Page 24: Three Phase Scroll Compressor Start Up Information
High pressure switch settings: Opens 650 +/– 15 PSI, Condenser Fan Operation Closes 520 +/– 15 PSI. NOTE: Certain models may be equipped with a low ambient control (LAC), and if so, the condenser fan Three Phase Scroll Compressor Start motor will have a delayed start until system refrigerant Up Information operating pressure builds up. -
Page 25: High Pressure Detection
Low Pressure Detection terminal will be energized indicating an alarm. The red LED will light and stay on until power is cycled Low pressure switch monitoring allows for a lockout to the control or a loss of voltage is present at Y condition in a situation where the switch is open. -
Page 26: Pressure Service Ports
If in eye injuries or refrigerant burns! the Bard air conditioning system is being set up in a typical environment where 72°F is the lowest cooling setpoint, remove the Y2/Y3 jumper and install a... - Page 27 If the unit is being installed with any ventilation package, a Bard LAC kit must be installed. Failure to utilize an LAC with any air conditioner can cause coil freeze up. NOTE: Economizer will disable Balanced Climate operation.
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Page 28: Service
SERVICE Troubleshooting NIDEC SELECTECH D. Check the external static pressure (total of both supply and return) to ensure it is within Series ECM Motors the range as listed on the unit serial plate. If If the Motor Is Running higher than allowed, additional duct work is needed. -
Page 29: Model Selectech Communication Diagnostics
2. If the motor has proper high voltage and ground at A. If the low voltage communication is not the L/L1, G, N/L2 connections, then continue with present, check the demand from the the Model SelecTech Communication Diagnostics. thermostat. Also check the output terminal and wire(s) from the terminal strip or control Model SelecTech Communication Diagnostics relay(s) to the motor. -
Page 30: Compressor Solenoid
Compressor Solenoid Fan Blade Setting Dimensions See Sequence of Operation on page 26 for function. Shown in Figure 25 is the correct fan blade setting for proper air delivery across the outdoor coil. Refer to A nominal 24-volt direct current coil activates the Table 9 for unit specific dimension. -
Page 31: Removal Of Fan Shroud
Removal of Fan Shroud R-410A Refrigerant Charge 1. Disconnect all power to the unit before servicing. This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity 2. To access the condenser coil for cleaning or to and efficiency ratings were determined by testing with service the outdoor fan, first remove the side this refrigerant charge quantity. -
Page 32: Table 10A 2Nd Stage Cooling Pressures - Standard Airflow
TABLE 10A 2nd Stage Cooling Pressures – Standard Airflow Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side W3SAC 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side W4SAC... -
Page 33: Table 11 Electrical Specifications
TABLE 11 Electrical Specifications Single Circuit Multiple Circuit Maximum Rated Minimum Field External Fuse Field Power Ground Maximum Field Model Volts Circuit Power Minimum Wire Size Wire Size External Power Ground & Phase Ampacity Circuit Circuits... -
Page 34: Setting Unit Airflow
Table 12. The higher taps. Each speed tap is programmed by Bard at the speeds can also be used when higher sensible cooling is factory to different motor torque settings (see Figure 27). -
Page 35: Speed Tap 1 - Vent/Blower Only
Programmed blower speed taps are as follows (see also Speed Tap 3 – Default LO Cooling & Heating Figure 28): Speed tap 3 is programmed for rated speed in the Speed Tap 1: Vent/blower only speed SelecTech motor. This means that if speed tap 3 is energized, the airflow amount will be the default Speed Tap 2: Balanced Climate speed airflow. -
Page 36: Figure 29 Dirty Filter Switch And Dirty Filter Indicator Light/Reset Switch
using a piece of cardboard under the filters until 5. Replace the upper front panel and repeat Steps the switch trips and the light comes on. If the 1-3. Continue to make adjustments described in filter is restricted by 75% (or desired restriction Step 4 until the desired restriction is obtained. -
Page 37: Figure 30 Adjusting Filter Switch
FIGURE 30 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 2100-720E Page 37 of 42... -
Page 38: Table 14 Indoor Blower Performance
TABLE 14 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 39: Table 15 Maximum Esp Electric Heat Only
TABLE 15 Maximum ESP of Operation Electric Heat Only Model W3SAC, W4SAC, W5SAC Outlet Front Speed High -A0Z -A05 -A10 -A15 -A20 -B0Z -B06 -B09 -B15 -B18 -C0Z -C09 -C15 Values shown are for units equipped with standard 1" throwaway filter or 1" washable filter. Derate ESP by .15 for 2"... -
Page 40: Table 18 Optional Accessories
TABLE 18 Optional Accessories EHW3SC-A05 EHWA42C-A05 EHW3SC-A10 EHWA42C-A10 EHW3SC-A15 EHWA42C-A15 EHWA42CD-A15 EHW3SC-A20 EHWA42C-A20 EHWA42C-B05 EHW3SC-B06 EHWA42C-B06 EHW3SC-B09 EHWA42CD-B09 EHW3SC-B15 EHWA42C-C05 EHW3SC-C06 EHW3SC-C09 EHW3SC-C15 EHWA42C-C15 EHWA48C-A05 Heater Kits EHWA48CD-A05 EHWA48CD-A10 EHWA48CD-B09 EHWA48C-B15 EHWA48C-B18 EHWA48CD-B18 EHWA48C-C09 EHWA60CD-A05 EHWA60C-A10 EHWA60CD-A10 EHWA60C-A15 EHWA60C-A20 EHWA60C-B06 EHWA60C-B09 EHWA60CD-B09 EHWA60C-B15... - Page 41 GRAPH 1 W3SAC FAD-NE5 W/O Exhaust Ventilation Delivery GRAPH 2 W4SAC FAD-NE5 W/O Exhaust Ventilation Delivery Manual 2100-720E Page 41 of 42...
- Page 42 GRAPH 3 W5SAC FAD-NE5 W/O Exhaust Ventilation Delivery Manual 2100-720E Page 42 of 42...
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