Carrier 59SP6A Installation, Start-Up, Operating, Service And Maintenance Instructions page 32

59SP6A: Installation, Start-up, Operating, Service and Maintenance Instructions
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in dangerous operation,
personal injury, death, or property damage.
Do not drill into blower shelf of furnace to route control wiring. Route
any control or accessory wiring to the blower compartment through
external knockouts on the casing.
Communication Connector is only used when the twinning two furnaces
using a factory accessory twinning kit. Only select sizes can be twinned,
refer to Twinning Kit instructions for list of approved furnaces. See
Fig. 37.
NOT USED
Fig. 37 – Twinning Communication Connector
24-V Wiring
Make field 24-v connections at the 24-v terminal strip. See
Connect terminal Y/Y2 as shown in
Use only AWG No. 18, color-coded, copper thermostat wire.
NOTE: Use AWG No. 18 color-coded copper thermostat wire for
lengths up to 100 ft. (30 M). For wire lengths over 100 ft., use AWG No.
16 wire.
MODEL PLUG
CONNECTOR
COMMUNICATION
CONNECTOR
(WHEN USED)
SW2 AIR CONDITIONING
(AC) AIRFLOW SETUP
SWITCHES (6, 7, 8)
24-V THERMOSTAT
TERMINALS
STATUS AND COMM
LED LIGHTS
3-AMP FUSE
TRANSFORMER 24-VAC
CONNECTIONS
115-VAC (L2) NEUTRAL
CONNECTIONS
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
L14F006A
Fig.
Fig. 33 for proper cooling operation.
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
Fig. 39 – Example of Single Stage Furnace Control
The 24-v circuit contains an automotive-type, 3-amp. fuse located on the
control. Any direct shorts during installation, service, or maintenance
could cause this fuse to blow. If fuse replacement is required, use ONLY
a 3-amp. fuse of identical size. See
Thermostats
A single stage heating and cooling thermostat can be used with the
furnace. The furnace control board CPU will control outdoor unit
staging. A two stage heating and cooling thermostat can also be used to
control the staging. For two stage thermostat control of a 2-stage outdoor
unit, remove the ACRDJ jumper from the furnace control board. Refer to
typical thermostat wiring diagrams and the Sequence of Operation
section for additional details. Consult the thermostat installation
instructions for specific information about configuring the thermostat.
See Fig. 39 and Fig. 40.
To Humidifier Leads
39.
To Humidifier Leads
Fig. 38 – Field-supplied Isolation Relay for Humidifiers with
SW2 CONTINUOUS FAN (CF)
AIRFLOW SETUP SWITCHES (3, 4, 5)
IND
EAC-1 TERMINAL
PL2 – (115VAC) HOT SURFACE
(115-VAC 1.0 AMP MAX.)
IGNITER SIGNAL & INDUCER
32
Fig. 39.
24 V
Coil
Internal Power Supply
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.
ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
PL1 – LOW
VOLTAGE MAIN
HARNESS
CONNECTOR
BOARD PART
NUMBER LOCATION
MOTOR CONNECTOR
To HUM Terminal On
Furnace Control Board
To Com/24V Screw Terminal
on Thermostat Strip
A11157
A190207