White Rodgers 2272W Operation, Humidistat Control, 1E56/1F56W Heat/Cool Low Voltage Thermostat

Figure 5. Typical Parallel Wiring Diagram of Dehumidistat with THERMOSTAT

1E56/1F56(W) Heat/Cool Low Voltage Thermostat		SWITCH	COOL
	FIXED
	COOLING		HEAT
	ANTIC.
		BIMETAL
			ADJ. HEATING ANTIC.
TYPE 1E56/1F56(W) THERMOSTAT			THERMOSTAT

TYPE 2273/2274							CAPTIVE
DEHUMIDISTAT		FAN					SCREWS
		SWITCH	COOL	OFF	HEAT
AUTO	ON						SUBBASE
						COOL
						OFF	SYSTEM
						HEAT	SWITCH
GREEN WIRE
G		Y	RC		RH	W
WIRE							SYSTEM
NUTS
						FIELD-
						INSTALLED
FAN			24vAC		120vAC	JUMPER
		COOLING				HEATING
RELAY		RELAY				SYSTEM

DEHUMIDISTAT	TRANSFORMER
FIELD-WIRING

TYPE 2273/2274

DEHUMIDISTAT

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.

AUXILIARY RELAY

CONTACTS

S.P.S.T N.O.

GREEN WIRE					JUMPER	THERMOSTAT
					WIRE
						TYPE 1F90(W)
WIRE	Y	G	W	RC	RH		NOTE:
						SYSTEM
NUTS							AUXILIARY RELAY REQUIRED ON
							DIGITAL HEAT/COOL THERMOSTATS
AUX.	COOLING	FAN	HEATING		TRANSFORMER		WHICH HAVE TRIAC OUTPUT ON "Y"
							TERMINAL.
RELAY	RELAY	RELAY	SYSTEM
DEHUMIDISTAT					24vAC	120vAC
FIELD-WIRING
LOCATE AUXILIARY
RELAY AT FURNACE

Figure 6. Typical Parallel Wiring Diagram of Dehumidistat with 1F90(W) Heat/Cool

Low Voltage Digital Thermostat

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.

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.

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-

b. Then rotate knob to desired setting.

c. Turn thermostat fan switch back to "AUTO".

At Outside	°C	-20	-10	-5	Above 0°
Temperature	°F	0	+10	+20	Above +20°
Recommended		25%	30%	35%	40%
Setting

4