Bryant DURAPAC PLUS SERIES 542J User Manual

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B. Field Control Wiring

Install a Bryant-approved accessory thermostat assembly
according to the installation instructions included with the
accessory. Refer to unit Price Pages or contact your
local Bryant representative for more information. Locate

thermostat assembly on a solid wall in the conditioned space
to sense average temperature.

Route thermostat cable or equivalent single leads of no. 18
AWG (American Wire Gage) colored wire from subbase ter-
minals through conduit in unit to low-voltage connections as
shown on unit label wiring diagram and in Fig. 12.

NOTE:

For wire runs up to 50 ft, use no. 18 AWG insulated

wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insu-
lated wire (35 C minimum). For over 75 ft, use no. 14 AWG
insulated wire (35 C minimum). All wire larger than no. 18
AWG cannot be directly connected to the thermostat and will
require a junction box and splice at the thermostat.

Set heat anticipator settings as indicated in Table 3. Settings
may be changed slightly to provide a greater degree of com-
fort for a particular installation.

C. Optional Non-Fused Disconnect

On units with the optional non-fused disconnect, incoming
power will be wired into the disconnect switch. Refer to
Fig. 13 for wiring for 100 and 200 amp disconnect switches.
Units with an MOCP (maximum overcurrent protection)
under 100 will use the 100 amp disconnect switch. Units
with an MOCP over 100 will use the 200 amp disconnect
switch. Refer to the applicable disconnect wiring diagram.

To prevent breakage during shipping, the disconnect handle
and shaft are shipped and packaged inside the unit control
box. Install the disconnect handle before unit operation.
To install the handle and shaft, perform the following
procedure:

1. Open the control box door and remove the handle and

shaft from shipping location.

2. Loosen the Allen bolt located on the disconnect

switch. The bolt is located on the square hole and is
used to hold the shaft in place. The shaft cannot be
inserted until the Allen bolt is moved.

3. Insert the disconnect shaft into the square hole on

the disconnect switch. The end of the shaft is spe-
cially cut and the shaft can only be inserted in the
correct orientation.

4. Tighten the Allen bolt to lock the shaft into position.

5. Close the control box door.

6. Attach the handle to the external access door with

the two screws provided. When the handle is in
the ON position, the handle will be vertical. When
the handle is in the OFF position, the handle will be
horizontal.

7. Turn the handle to the OFF position and close the

door. The handle should fit over the end of the shaft
when the door is closed.

8. The handle must be in the OFF position to open the

control box door.

D. Optional Convenience Outlet

On units with optional convenience outlet, a 115-v GFI
(ground fault interrupt) convenience outlet receptacle is pro-
vided for field wiring. Field wiring should be run through the

-in. knockout provided in the basepan near the return air

opening.

3/4" FPT DRAIN
CONNECTION

1-3/8"
DRAIN HOLE

INDOOR FAN MOTOR ACCESS

FILTER
ACCESS

Fig. 9 — Condensate Drain Details

Fig. 10 — Condensate Drain Piping Details

LEGEND

NOTE: The maximum wire size for TB1 is 350 kcmil for all unit voltages.

Fig. 11 — Field Power Wiring Connections

EQUIP GND — Equipment Ground
kcmil

— Thousand Circular Mils

NEC

— National Electrical

— Terminal Block