Carrier KGATW0601HSI, Руководство по установке

Страница: 40 / 40

Table 7—Two Stage Heating with Single Stage Thermostat Using 2 Two Stage Furnaces
THERMOSTAT CONNECTIONS CONTROL BOARD CONNECTION ACTION
R R Power from control board to thermostat
W W/W1
Starts L/H and R/H furnaces in low heat or high heat, as deter-
mined by L/H furnace control board*
* LHT switches must be in correct configuration
Table 8a—Two Stage Heating with Two Stage Thermostat Using 2 Two Stage Furnaces
THERMOSTAT CONNECTIONS CONTROL BOARD CONNECTION ACTION
R R Power from control board to thermostat
W1 W/W1 Starts both furnaces in low heat for first stage heating*
W2 W2 Starts both furnaces in high heat for second stage heating*
* LHT switches must be in correct configuration
Table 8b—Single Stage Cooling with Single Stage Thermostat Using 2 Single Stage A/C units
THERMOSTAT CONNECTIONS CONTROL BOARD CONNECTION ACTION
R R Power from control board to thermostat
Y Y/Y2
Energizes accessory cooling relay to start both A/C units for
cooling
G G Starts both indoor fans on cooling speed (With Y/Y2 energized)
Dehum* Dehum**
Reduces airflow in cooling mode from cooling speed to heating
speed when Dehum input is removed
* Do not remove ACRDJ from furnace control boards
** Dehum is not available on all thermostats or control boards
Table 8c—Two Stage Cooling with Two Stage Thermostat Using 2 Single Stage A/C units
THERMOSTAT CONNECTIONS CONTROL BOARD CONNECTION ACTION
R R Power from control board to thermostat
Y1 Y/Y2
Energizes accessory cooling relay to start L/H A/C for first stage
cooling
Y2 None
Thermostat Y2 wired directly to R/H accessory relay to start R/H
A/C
G G Starts both indoor fans on heating speed until Y/Y2 is energized
Dehum* Dehum**
Reduces airflow in cooling mode from cooling speed to heating
speed when Dehum input is removed
* Do not remove ACRDJ from furnace control boards
** Dehum is not available on all thermostats or control boards
Table 8d—Continuous Fan Operation
THERMOSTAT CONNECTIONS CONTROL BOARD CONNECTION ACTION
R R Power from control board to thermostat
G G Starts both fans in heating speed*
*Staged Continuous Fan operation is not available
© 2005 CAC/BDP 7310 W. Morris St., Indianapolis, IN 46231
—40—
Catalog No. AG-GATW-15