Emerson White-Rodgers 2271W Instructions D'installation page 4

Figure 5. Typical Parallel Wiring Diagram of Dehumidistat with
1E56/1F56(W) Heat/Cool Low Voltage Thermostat
TYPE 2273/2274
DEHUMIDISTAT
WIRE
NUTS
DEHUMIDISTAT
FIELD-WIRING
TYPE 2273/2274
DEHUMIDISTAT
WIRE
NUTS
DEHUMIDISTAT
FIELD-WIRING
Figure 6. Typical Parallel Wiring Diagram of Dehumidistat with 1F90(W) Heat/Cool
OPERATION
HUMIDISTAT CONTROL
Normally, the system is wired so that the Furnace humidi-
fier can operate only when the furnace blower is operat-
ing, and only if the Humidistat control is calling for humid-
ity. If the furnace blower is also used for the air-
conditioning system, the humidistat should be turned to
full "OFF" during the cooling season.
SETTING & ADJUSTMENT
1. Although a relative humidity environment of 45-50%
may be desirable, setting your humidistat at this point
when the outside temperature is below -1°C (30°F) can
cause condensation on windows and walls. Contin-
ued condensation for extended periods of time may
result in structural damage. Use the following chart, as
a guide for maximum dial settings for various outdoor
temperatures. If condensation forms at these sug-
TYPE 1E56/1F56(W) THERMOSTAT
FAN
SWITCH
AUTO ON
GREEN WIRE
G
FAN
COOLING
RELAY
RELAY
AUXILIARY RELAY
CONTACTS
S.P.S.T N.O.
GREEN WIRE
Y G
AUX. COOLING
FAN
RELAY
RELAY RELAY
LOCATE AUXILIARY
RELAY AT FURNACE
Low Voltage Digital Thermostat
OFF
RC
Y
120vAC
24vAC
TRANSFORMER
NOTE:
IF COOLING BLOWER DOES NOT OPERATE, ENERGIZED
THROUGH "G" TERMINAL OF THERMOSTAT SUB-BASE WHEN
DEHUMIDISTAT IS ENERGIZED. REFER TO FIG. 6, FOR AUXILIARY
RELAY WIRING TO ENERGIZE BLOWER.
JUMPER
THERMOSTAT
WIRE
TYPE 1F90(W)
RC RH
W
SYSTEM
TRANSFORMER
HEATING
SYSTEM
24vAC
gested settings, reduce the humidistat setting by
successive 5% increments. After each reduction in
setting allow 6 hours for equilibrium to be reached
before further re-adjustment.
2. An operational check can be made as follows:
a. Turn humidistat knob to "ON" position. Turn the
thermostat fan switch to "ON" the humidifier should
start.
b. Then rotate knob to desired setting.
c. Turn thermostat fan switch back to "AUTO".
At Outside °C
Temperature °F
Recommended
Setting
4
THERMOSTAT
COOL
SWITCH
FIXED
COOLING
HEAT
ANTIC.
BIMETAL
ADJ. HEATING ANTIC.
THERMOSTAT
CAPTIVE
SCREWS
SUBBASE
SYSTEM
SWITCH
RH W
SYSTEM
FIELD-
INSTALLED
JUMPER
HEATING
SYSTEM
NOTE:
AUXILIARY RELAY REQUIRED ON
DIGITAL HEAT/COOL THERMOSTATS
WHICH HAVE TRIAC OUTPUT ON "Y"
TERMINAL.
120vAC
-20 -10 -5
0 +10 +20
25% 30% 35%
Above 0°
Above +20°
40%