Emerson 1F92 - Manual (Page 10)

8
MULTI-STAGE TERMINAL OUTPUTS MULTI-STAGE TERMINAL OUTPUTS MULTI-STAGE TERMINAL OUTPUTS MULTI-STAGE TERMINAL OUTPUTS MULTI-STAGE TERMINAL OUTPUTS
Refer to equipment manufacturers’
instructions for specific system
wiring information.
You can configure the thermostat for
use with either multi-stage electric
heat systems or multi-stage gas
systems. When configured for
electric heat, the G terminal
(blower/fan) will be energized on a
call for heat.
This thermostat is designed to
operate a single-transformer system.
If you have a two-transformer
system, cut and tape off one
transformer. If transformer safety
circuits are in only one of the
systems, remove the transformer of
the system with NO safety circuits. If
required, replace remaining trans-
former with a 75VA Class II
transformer. After disconnecting one
transformer, the two commons must
be jumpered together. Use the terminal output information
below to help you wire the thermo-
stat properly for your multi-stage
system. After wiring, see CON-
FIGURATION section for proper
thermostat configuration.
THERMOST THERMOST THERMOST THERMOST THERMOSTA A A A AT T T T T TERMIN TERMIN TERMIN TERMIN TERMINALS (Upper) ALS (Upper) ALS (Upper) ALS (Upper) ALS (Upper)
L PH
Malfunction Light Not Used
THERMOSTAT TERMINALS (Lower) THERMOSTAT TERMINALS (Lower) THERMOSTAT TERMINALS (Lower) THERMOSTAT TERMINALS (Lower) THERMOSTAT TERMINALS (Lower)
SYSTEM E C R W3/A1 W2 E2/P W1 Y2 Y1 B O G
Multi-Stage No function 24 Volt 24 Volt Not Used Heat mode No function Heat mode Cool mode Cool mode Energized in Energized in Blower/Fan
(Common) (Hot) 2nd stage 1st stage 2nd stage 1st stage Heat & Off Cool mode Energized on
mode call for Cool*
* (and Heat if configured to Electric Heat)