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R80ESN/R80ESL(Series A): Installation, Start–Up, Operating and Service and Maintenance Instructions
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.
ACCESSORIES
1. Electronic Air Cleaner (EAC)
Connect an accessory Electronic Air Cleaner (if used) using 1/4-in
female quick connect terminals to the two male 1/4-in
quick-connect terminals on the control board marked EAC-1 and
EAC-2. The terminals are rated for 115 VAC, 1.0 amps maximum
and are energized during blower motor operation (see
THERMOSTAT
*
D
Single-Stage Furnace with Single-Speed Air Conditioner
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig.
28).
J2 DEFEAT
JUMPER
HEAT OFF-DELAY
J2
24-V THERMOSTAT
TERMINALS
TEST/TWIN
3-AMP FUSE
TRANSFORMER 24-VAC
CONNECTIONS
STATUS LED LIGHT
HEATING SPEED
TAP
COOLING SPEED
TAP
FAN SPEED TAP
115-VAC (L2) NEUTRAL
CONNECTIONS
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
Fig. 28 – Furnace Control
See notes 1 and 4
Fig. 29 – Thermostat Wiring Diagrams
2. Humidifier (HUM)
Connect an accessory 24 VAC, 0.5 amp. maximum humidifier (if
used) to the 1/4-in male quick-connect HUM terminal and
COM-24V screw terminal on the control board thermostat strip.
The HUM terminal is energized when the pressure switch closes
during a call for heat (see
NOTE: DO NOT connect furnace control HUM terminal to HUM
(humidifier) terminal on humidity sensing thermostat, zone controller or
similar device. See humidity sensing thermostat, zone controller,
thermostat, or controller manufacturer's instructions for proper
connection.
HEAT OFF-DELAY
JUMPER SELECT
J1
PR-1
BL-1
L1
PL2 – (115VAC) HOT SURFACE IGNITER &
INDUCER MOTOR 115V SUPPLY CONNECTOR
THERMOSTAT
*
D
Single-Stage Furnace with Single-Speed Heat Pump
19
Fig.
28).
PLT -FACTORY RUN TEST PORT
PRODUCTION USE ONLY
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
BOARD PART NUMBER
LOCATION
PL1 – LOW VOLTAGE MAIN HARNESS
CONNECTOR
115-VAC (PR-1) TRANSFORMER
PRIMARY
115-VAC (BL-1) BLOWER MOTOR LINE
VOLTAGE CONNECTION
115-VAC (L1) LINE VOLTAGE
CONNECTION
See notes 1 and 3
A190023
A190085
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