Wiring - Main Power; Figure 7 Common Wall Mounting Installations - Bard H42AA-B Installation Instructions Manual

RAIN
FLASHING
OUTSIDE
WALL
FREE AIR FLOW
NO DUCT
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
WIRING – MAIN POWER
RAIN
Refer to the unit rating plate for wire sizing information
FLASHING
and maximum fuse or circuit breaker size. Each outdoor
unit is marked with a "Minimum Circuit Ampacity". This
SUPPLY AIR DUCT
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
OUTSIDE
WALL
codes.
The electrical data lists fuse and wire sizes (75° C
FALSE WALL INSTALLATION
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.
Common Wall Mounting Installations
RAFTERS
FINISHED CEILING SURFACE
SUPPLY AIR DUCT
W/ GRILLE
RETURN AIR
OPENING W/ GRILLE
RAFTERS
FINISHED
CEILING SURFACE
RETURN AIR
SPACE
WALL SLEEVE
FALSE WALL
RETURN AIR GRILLE
FIGURE 7
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
RAIN
FLASHING
SUPPLY AIR DUCT
OUTSIDE
WALL
DUCTED SUPPLY
RETURN AT UNIT
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
The unit rating plate lists a "Maximum Time Delay
Relay Fuse" or circuit breaker that is to be used with
RAIN
the equipment. The correct size must be used for
FLASHING
proper circuit protection and also to assure that there
will be no nuisance tripping due to the momentary high
SUPPLY AIR DUCT
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.
OUTSIDE
See "Start Up" section beginning on page 17 for
WALL
important information on three phase scroll compressor
start ups.
CLOSET INSTALLATION
See Tables 4A and 4B (pages 23 and 24) for electrical
specifications.
RAFTERS
FINISHED CEILING SURFACE
RETURN AIR
OPENING W/ GRILLE
RAFTERS
LOWERED
SUPPLY AIR
CEILING
GRILLE
FINISHED CEILING
SURFACE
CLOSET WALL
WALL
SLEEVE
RETURN AIR
RAISED FLOOR
GRILLE
RETURN AIR
Manual 2100-647D
Page
MIS-550 C
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