INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGED AIR CONDITIONER Models: WA611 WA701-B WA701-C WA702-A WA721 MIS-801 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned. Manual No.
CONTENTS Getting Other Information and Publications For more information, contact these publishers: ..... 1 Wall Mount General Information Air Conditioner Wall Mount Model Nomenclature .... Shipping Damage .................................................... General ............................................................... Duct Work ............................................................... Filters ............................................................... Fresh Air Intake ..................
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. FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave. N.W.
WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER WA CAPACITY 61 – 5 Ton 70 – 6 Ton 72 – 6 Ton REVISION 70 1 – B 09 X X X X X VENTILATION OPTIONS X – Barometric Fresh Air Damper (Standard) KW B – Blank-off Plate 00 – No KW M – Motorized Fresh Air Damper 0Z – No KW COLOR OPTIONS V – Commercial Room Ventilator w/Circuit X – Beige Motorized with Exhaust Breaker (Standard) E – Economizer (Internal) Fully or Pull 1 – White Modulating with Exhaust Disconnect R –
TABLE 2 DIMENSIONS OF BASIC UNIT FOR ARCHITECTURAL AND INSTALLATION REQUIREMENTS (Nominal) Unit WA611 WA70 WA721 Width W 42 Depth Height D H 22-1/4 94-7/8 Supply A B 9-7/8 29-7/8 Return C B E 15-7/8 29-7/8 43-7/8 F G I J K L M N O P Q 19 41-5/8 30 42-11/16 37 44-3/4 42-1/2 3-1/4 43 33-7/8 10 All dimensions in inches.
Manual 2100-425 Page 4 TABLE 3 ELECTRICAL SPECIFICATIONS SINGLE CIRCUIT 3 MODELS WA611-A00,A0Z -A05 -A08 -A10 Rated N o.
SHIPPING DAMAGE DUCT WORK 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. All duct work, supply and return, must be properly sized for the design air flow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing.
FILTERS A 1 inch throwaway filter is supplied with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the service door. A 1 inch washable filter and 2 inch pleated filter are also available as optional accessories. The internal filter brackets are adjustable to accommodate the 2 inch filter by bending down the tabs to allow spacing for the 2 inch filters.
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 4. Mount bottom mounting bracket. 1. Two holes, for the supply and return air openings, must be cut through the wall as shown in Figure 3. 5. Hook top rain flashing under back bend of top. Top rain flashing is shipped secured to the right side of the back. 2. On wood-frame walls, the wall construction must be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration. See Figures 4 and 5.
The unit rating plate lists a “Maximum Time Delay Relay Fuse” or “HACR" type 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.
WIRING — LOW VOLTAGE WIRING 230/208V, 1 phase and 3 phase equipment dual primary voltage transformers. All equipment leaves 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 shown in Table 4 below.
FIGURE 4 WALL-MOUNTING INSTRUCTIONS SEE FIGURE 3 — MOUNTING INSTRUCTIONS MIS-548 FIGURE 5 WALL-MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS SEE FIGURE 1 FOR DUCT DIMENSIONS MIS-549 Manual 2100-425 Page 10
FIGURE 6 COMMON WALL-MOUNTING INSTALLATIONS MIS-550 Manual 2100-425 Page 11
FIGURE 7 ELECTRIC HEAT CLEARANCE Side section view of supply air duct for wall mounted unit showing 1/4 inch clearance to combustible surfaces. MIS-277 WARNING • A minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting. • It is important to insure that the 1/4 inch minimum spacing is maintained at all points. • Failure to do this could result in overheating the combustible material and may result in fire.
FIGURE 8 LOW VOLTAGE WIRING Manual 2100-425 Page 13
START UP IMPORTANT INSTALLER NOTE HIGH PRESSURE SWITCH For improved start-up performance, wash the indoor coil with a dishwasher detergent. The WA611, WA70 and WA721 models are supplied with a remote reset high pressure switch. If tripped, this pressure switch may be reset by turning the thermostat off then back on again. CRANKCASE HEATERS WA611, WA70 and WA721 units are provided with compressor crankcase heat.
SERVICE HINTS 1. Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system, which shortens equipment service life as well as increasing operating costs. 2. Check all power fuses or circuit breakers to be sure they are the correct rating. 3. Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.
ADJUSTMENTS PHASE MONITOR Adjustable Delay on Make and Delay on Break Timer All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes. Delay on Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay on Break (DOB) setting: 0.5 minute (30 seconds) DOB =123 second 1.
TROUBLESHOOTING 6. Service motor/fan as needed. 7. Reverse steps to reinstall. FAN BLADE SETTING DIMENSIONS Shown in the drawing below are the correct fan blade setting dimensions for proper air delivery across the outdoor coil. REFRIGERANT CHARGE Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. The correct system R-22 charge is shown on the unit rating plate.
TABLE 11 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY Model WA611 WA70 WA721 S p eed KW Medium S p eed High S p eed Low S p eed High S p eed Low S p eed High S p eed -A05 -A08 -A10 -A20 .30 .30 .30 .30 .30 .30 .30 .30 .50 --.50 .40 .50 --.50 .50 --------- --------- -B09 -B15 -B18 .30 ----- .30 ----- .50 .50 .50 .50 .50 .50 .50 .50 .50 .50 .50 .50 -C09 -C15 .30 --- .30 --- .50 .50 .50 .50 ----- ----- TABLE 12 COOLING PRESSURE – (All temperatures °F) Model WA611-A.
WA721-B WA701-C, WA721-C WA701-B WA702-A WA611-C WA611-B WA611-A TABLE 13 OPTIONAL ACCESSORIES MODEL DESCRIPTION EHWA05-A05 Heater Package X EHWA10-A10 Heater Package X EHWA15-A15 Heater Package X EHWA20-A20 Heater Package X EHWA60-B09 Heater Package X X EHWA05-B15 Heater Package X X EHWA05-B18 Heater Package X X EHWA05A-C09 Heater Package EHWA05A-C15 Heater Package EHWA61-A05 Heater Package X EHWA61-A10 Heater Package X EHWA61-A08 Heater Package X EHWA61-B09
