Wall-Mount Unit Wiring; Main Power Wiring; Low Voltage Wiring - Bard MULTI-TEC W18AAPA Service Instructions Manual

WARNING
!
Electrical shock hazard.
Have a properly trained individual perform
these tasks.
Failure to do so could result in electric shock
or death.

MAIN POWER WIRING

Refer to the unit rating plate or Table 1 (page 18),
Table 2 (page 19) or Table 3 (page 20) for wire sizing
information and maximum fuse or circuit breaker size.
Each outdoor unit is marked with a "Minimum Circuit
Ampacity". 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 rating 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 unit rating plate and Tables 1, 2 and 3 list 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 circuit breaker or
fuse 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.
Route all field wires to the right of the wire shield as
shown in the circuit routing label found in Figure 9
(and also on the wall-mount units).
See Figure 10 to reference VAC landing points.
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.

WALL-MOUNT UNIT WIRING

Circuit Routing Label
ROUTE ALL HIGH VOLTAGE FIELD
WIRES TO THE RIGHT OF THE WIRE
ACHEMINER LES FILS HAUTE
TENSION SUR LA DROITE VERS LA
PROTECTION, COMME INDIQUÉ
5.000
VAC Supply Wiring Landing Points
Factory
Wiring
A 3/17/2014 ADDED FRENCH VERSION
REV. DATE DESCRIPTION
NOTE: Right-hand access model wiring landing points
are shown here; left-hand access models will
mirror this image.

LOW VOLTAGE WIRING

230/208V 1 phase and 3 phase equipment use dual
primary voltage transformers. All equipment leaves the
factory wired on 240V tap. It is very important that
the correct voltage tap is used. For 208V operation,
reconnect from 240V to 208V tap. The acceptable
operating voltage range for the 240 and 208V taps are:
240V Tap (253 – 216) and 208 Tap (220 – 197).
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.
FIGURE 9
NOTICE / AVIS
WHITE 3/16" LETTERING
SHIELD AS SHOWN
CIRCUIT BREAKER
/DISJONCTEUR
WIRE SHIELD /
PROTECTION
7961-393
FIGURE 10
2.500
MATERIAL : OUTDOOR VINYL
BACKGROUND COLOR : WHITE / SAFETY BLUE
PRINTING COLOR : BLACK 1/8" LETTERING
SIZE : 2.500 X 5.000
Field
FORMAT : ROLL
Wiring
MAT'L
PART
NAME
PART
NO.
DATE
SCALE
11182 BD SD RP
CHECKED
DISTRIBUTION
ECN NO DRN CHK APR
Manual 2100-676D
Page
WIRING ROUTING LABEL
7961-393 A A
7961-393
DWG.
NO.
3/17/2014 3/17/2014
1:4 DAY
DRAWN BY
Bard Mfg. Co.
SD RP RP
Bryan, Ohio
APPROVED
1 2 3 4 5
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