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1
1
/
" ELECTRICAL
2
BULKHEAD
CONNECTOR
Fig. 48 — Thru-the Base Option, Shipping Position
1. Remove the "L" bracket assembly from the unit.
2. Remove connector plate assembly from the "L" bracket
and discard the "L" bracket, but retain the washer head
screws and the gasket (located between the "L" bracket
and the connector plate assembly).
NOTE: Take care not to damage the gasket, as it is reused in
the following step.
3. Place the gasket over the embossed area in the basepan,
aligning the holes in the gasket to the holes in the base-
pan. See Fig. 49.
4. Install the connector plate assembly to the basepan using
8 of the washer head screws.
NOTE: If electrical connections are not going to occur at this
time, tape or otherwise cover the fittings so that moisture does
not get into the building or conduit in the interim.
CONNECTOR
PLATE
ASSEMBLY
GASKET
Fig. 49 — Installing Thru-the Base Option
Check tightness of connector lock nuts before connecting
electrical conduits.
Field-supplied and field-installed liquid-tight conduit con-
nectors and conduit may be attached to the connectors on the
basepan. Pull correctly rated high voltage and low voltage
through appropriate conduits. Connect the power conduit to the
internal disconnect (if unit is so equipped) or to the external
disconnect (through unit side panel). Remove one of the two
knockouts located on the bottom left side of the unit control
box. Use this hole for the control conduit.
Units Without Thru-base Connections
1. Install power wiring conduit through side panel openings.
Install conduit between disconnect and control box.
2. Install power lines to terminal connections as shown in
Fig. 43.
Field Control Wiring — The 558J*16 unit requires an exter-
nal temperature control device. This device can be a thermostat
emulation device provided as part of a third-party Building
Management System.
1
/
" ELECTRICAL
2
BULKHEAD
Thermostat — Select a Bryant-approved accessory thermostat.
CONNECTOR
When electric heat is installed in the 558J unit, the thermostat
must be capable of energizing the G terminal (to energize the
Indoor Fan Contactor) whenever there is a space call for heat
(energizing the W1 terminal). The accessory thermostats listed
on the unit price pages can provide this signal but they are not
configured to enable this signal as shipped.
Install the accessory thermostat according to installation in-
structions included with the accessory.
Locate the thermostat accessory on a solid wall in the condi-
tioned space to sense average temperature in accordance with
the thermostat installation instructions.
If the thermostat contains a logic circuit requiring 24-v pow-
er, use a thermostat cable or equivalent single leads of different
colors with minimum of seven leads. If the thermostat does not
require a 24-v source (no "C" connection required), use a ther-
mostat cable or equivalent with minimum of six leads. Check
the thermostat installation instructions for additional features
which might require additional conductors in the cable.
For wire runs up to 50 ft (15 m), use no. 18 AWG (Ameri-
can Wire Gage) insulated wire (35°C minimum). For 50 to
75 ft (15 to 23 m), use no. 16 AWG insulated wire (35°C mini-
mum). For over 75 ft (23 m), use no. 14 AWG insulated wire
(35°C minimum). All wire sizes larger than no. 18 AWG
cannot be directly connected to the thermostat and will require
a junction box and splice at the thermostat.
Thermostat
Connections
O/B/Y2
NOTES:
1. Typical multi-function marking. Follow manufacturer's configu-
ration instructions to select Y2. Do not configure for O output.
2. W2 connection not required on units without electric heating.
Field Wiring
Note 1: Typical multi-function marking. Follow manufacturer's configuration
Note 2: W2 connection not required on units without electric heating.
Fig. 50 — Typical Low-Voltage Control Connections
Unit without Thru-Base Connection Kit — Pass the thermo-
stat control wires through the bushing on the unit end panel.
Route the wire through the snap-in wire tie and up to the web
bushing near the control box. Route the wire through the bush-
ing and into the bottom left side of the control box after remov-
ing one of the two knockouts in the corner of the box. Using a
connector at the control box to protect the wire as it passes into
the control box. Pull the wires over to the terminal strip at the
upper left corner of the Central Terminal Board (CTB). Use the
connector at the control box and the wire tie to take up any
28
Typical
C
G
W2
(Note 2)
W1
(Note 1)
Y1
R
instructions to select Y2. Do not configure for O output.
Field Wiring
Central
Terminal
Board
X
C
T
H
G
E
R
W2
M
O
W1
S
T
Y2
A
T
Y1
R
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