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Contents

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Start Up

Important Installer Note ......................................... 13
High Pressure Switch ............................................ 12
Three Phase Scroll Compressor Start Up
Information ............................................................. 13
Phase Monitor ....................................................... 13
Service Hints ......................................................... 13
Sequence of Operation .......................................... 13
Compressor Control Module .................................. 14
Adjustments ........................................................... 14
Pressure Service Ports .......................................... 14

Troubleshooting

Fan Blade Setting Dimensions .............................. 15
Removal of Fan Shroud ......................................... 15
Refrigerant Charge ................................................ 15
Cooling Pressures ................................................. 16
Optional Accessories ............................................. 17

Figures

Figure 1 Unit Dimensions ....................................... 3
Figure 2 Blower Damper Assembly ........................ 5
Figure 3 Mounting Instructions ............................... 8
Figure 4 Wall-Mounting Instructions ....................... 9
Figure 5 Wall-Mounting Instructions ....................... 9
Figure 6 Common Wall-Mounting Installations ..... 10
Figure 7 Electric Heat Clearances ......................... 11
Figure 8 Low Voltage Wiring ................................. 12
Figure 9 Fan Blade Setting ................................... 15

Tables

Table 1

Electrical Specifications .......................... 2

Table 2

Dimensions of Basic Unit ........................ 3

Table 3

Electric Heat Table .................................. 4

Table 4

Operating Voltage Range ........................ 7

Table 5

Thermostat Wire Size ............................. 7

Table 6

Wall Thermostat and
Subbase Combinations ........................... 7

Table 7

Fan Blade Dimensions .......................... 15

Table 8

Suction Line Temperatures ................... 15

Table 9

Indoor Blower Performance .................. 15

Table 10 CFM and ESP ....................................... 15
Table 11

Maximum ESP of Operation
Electric Heat Only ................................. 15

Table 12 Cooling Pressure .................................. 16
Table 13 Optional Accessories ............................ 17

Getting Other Information and Publications

For more information,
contact these publishers .......................................... 1

Wall Mount General Information

Air Conditioner Wall Mount Model Nomenclature .... 2
Shipping Damage .................................................... 4
General .................................................................... 4
Duct Work ................................................................ 5
Filters ....................................................................... 5
Fresh Air Intake ....................................................... 5
Condensate Drain .................................................... 5

Installation Instructions

Wall Mounting Information ....................................... 6
Mounting the Unit .................................................... 6
Top Outlet Only ........................................................ 6
Wiring — Main Power .............................................. 6
Wiring — Low Voltage Wiring .................................. 7

Summary of Contents for WA302

Page 1: ...l No 2100 404 Supersedes File Volume III Tab 16 Date 04 01 02 Bard Manufacturing Company Bryan Ohio 43506 Since 1914 moving ahead just as planned Models WA302 WA372 WALL MOUNTED PACKAGED AIR CONDITION...

Page 2: ...9 Fan Blade Setting 15 Tables Table 1 Electrical Specifications 2 Table 2 Dimensions of Basic Unit 3 Table 3 Electric Heat Table 4 Table 4 Operating Voltage Range 7 Table 5 Thermostat Wire Size 7 Tab...

Page 3: ...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 Avenue NW Washington D...

Page 4: ...e s a h P o N d l e i F r e w o P s t i u c r i C 3 m u m i n i M t i u c r i C y t i c a p m A 1 m u m i x a M l a n r e t x E r o e s u F t k C r e k a e r B 2 d l e i F r e w o P e r i W e z i S 2...

Page 5: ...W h t p e D D t h g i e H H y l p p u S n r u t e R E F G I J K L M N O P Q R S T A B C B 2 0 3 A W 1 7 3 A W 0 2 8 3 5 2 1 7 1 3 6 5 0 7 8 8 7 8 8 7 2 8 8 3 1 8 8 7 2 0 0 0 4 0 5 8 1 5 7 5 2 3 9 7 1...

Page 6: ...mmended 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 See Page 1 for information on codes a...

Page 7: ...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 All duct work or portions thereof not in the...

Page 8: ...e Figure 6 WIRING MAIN POWER Refer to the unit rating plate for wire sizing information and maximum fuse or HACR Type circuit breaker size Each outdoor unit is marked with a Minimum Circuit Ampacity T...

Page 9: ...i n o r t c e l E 3 4 0 3 0 4 8 0 0 2 M C l o o c e g a t s 1 t a e h e g a t s 1 n o o t u a n a F l o o c f f o t a e h m e t s y S WIRING LOW VOLTAGE WIRING 230 208V 1 phase and 3 phase equipment...

Page 10: ...404 Page 8 FIGURE 3 MOUNTINGINSTRUCTIONS NOTE It is recommended that a bead of silicone caulking be placed behind the side mounting flanges and under the top flashing at the time of installation MIS...

Page 11: ...URE 4 WALL MOUNTINGINSTRUCTIONS MIS 549 FIGURE 5 WALL MOUNTINGINSTRUCTIONS MIS 548 MIS 311 MIS 311 MIS 311 SEE FIGURE 3 MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS FIGURE 1 FOR ACTUAL DIMENSIONS SEE FIG...

Page 12: ...Manual 2100 404 Page 10 MIS 550 FIGURE 6 COMMONWALL MOUNTINGINSTALLATIONS...

Page 13: ...E MIS 277 WARNING 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 i...

Page 14: ...Manual 2100 404 Page 12 MIS 1373C FIGURE 8 LOWVOLTAGEWIRING...

Page 15: ...ssure drops and discharge pressure rises when the compressor is energized Reverse rotation also results in an elevated sound level over that with correct rotations as well as substantially reduced cur...

Page 16: ...ROL MODULE The compressor control module is optional on the models covered by this manual The compressor control is an anti short cycle lockout timer with high and low pressure switch monitoring and a...

Page 17: ...l i o C y r D l i o C t e W l i o C y r D l i o C t e W 0 5 9 3 1 5 1 3 1 0 5 9 5 3 9 1 0 4 3 1 0 7 2 1 0 3 9 5 1 9 2 5 8 2 1 0 9 1 1 0 1 9 5 8 8 3 5 0 2 1 0 0 1 1 5 5 8 0 3 8 4 0 1 1 1 0 0 0 1 0 0 8...

Page 18: ...8 7 4 4 2 9 7 8 5 2 0 8 5 7 2 1 8 2 9 2 3 8 8 0 3 4 8 7 2 3 5 8 5 4 3 B D g e d 0 8 B W g e d 7 6 e d i S w o L e d i S h g i H 0 8 0 2 2 1 8 5 3 2 3 8 0 5 2 5 8 5 6 2 6 8 2 8 2 7 8 9 9 2 9 8 6 1 3 0...

Page 19: ...o C t n e i b m A w o L X X X A 6 1 A M C l o r t n o C e r u s s e r P w o L X X X X A 8 1 A M C C P L C A L X X X 5 1 C M C t i K t r a t S X 5 0 A 3 0 A W H E e g a k c a P r e t a e H 1 X 8 0 A 3...

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