Carrier 58SP0B Installation, Start-Up, Operating And Service And Maintenance Instructions page 18

58SP0B/58SP1B: Installation, Start–Up, Operating and Service and Maintenance Instructions
To Humidifier Leads
To Humidifier Leads
Fig. 28 – Field-supplied Isolation Relay for Humidifiers with
Internal Power Supply
Fig. 29 – Example of Single Stage Furnace Control ECM Blower
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
To HUM Terminal On
Furnace Control Board
24 V
Coil
To Com/24V Screw Terminal
on Thermostat Strip
Motor
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Fig. 30 – Thermostat Connection for Single-Stage Furnace and A/C
Notes for thermostat drawings:
1. Thermostat output signals may vary. Consult thermostat installation
instructions for more information.
2. Refer to outdoor equipment Installation Instructions for additional
information and setup procedure.
3. Configure the thermostat for air conditioner installations. Refer to
thermostat instructions.
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4. Configure thermostat for HYBRID HEAT® dual fuel operation.
Refer to thermostat instructions.
5. Heat pump MUST have a high pressure switch for HYBRID
HEAT® dual fuel applications.
6. For Single-stage AC or HP, configure thermostat for single-stage
compressor operation. Refer to thermostat instructions.
7. NO connection should be made to the furnace HUM terminal when
using a thermostat with a 24 volt humidifier output.
8. For Two-Stage AC or HP, thermostat may be configured for
two-stage compressor operation, allowing the thermostat to control
staging, or thermostat may be configured for single stage operation,
allowing furnace control to control staging. Refer to note 9 and
thermostat instructions.
9. For Two-stage outdoor equipment, connection is Optional - See
Cooling sequence of operations (adaptive mode) for additional
information. If two-stage HP/cooling thermostat is connected to Y1
and Y/Y2 on Modulating or Two-stage furnace control board,
Cooling Thermostat Type (Ctt) (setting on furnace control) should
be set to "2St" to allow thermostat to control outdoor unit staging.
10. For Single-stage outdoor equipment, connect thermostat HP or AC
output to Y/Y2 of furnace control.
11. Configure Dehumidify function to remove 24 VAC from Dehum
A230172
terminal on a demand to dehumidify. Consult thermostat
installation instructions for more information.
12. Thermostat terminal connection order on furnace control may vary-
reference furnace control labeling for designations.
13. Field installed jumper required for InteliSense™ installations using
single-stage AC or HP.
18
& Heat Pump
A230173