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GENERALAire
E1
ELECTRONIC TEMPERATURE
COMPENSATING HUMIDISTAT
TABLE OF IDEAL HUMIDITIES
NOTE: Humidifier shuts off above 50 °F(10°C)
OUTDOOR TEMPERATURE
KNOB
-20°F
-10°F
POSITION
-29°C
-23°C
7
25%
30%
6
20%
25%
5
15%
20%
4
10%
15%
3
10%
10%
2
10%
10%
1
10%
10%
III. INSTALLATION INSTRUCTIONS
PRECAUTIONS
The installer must be a qualified Technician. Disconnect electrical power
before beginning installation. Do not install the humidistat on the warm air
duct. The foam gasket is used for mounting on a return duct only. Conduct a
thorough checkout before leaving the installation.
WALL MOUNTING INSTRUCTIONS
1. Chose a location for the E1 about five feet above the floor on an inside
wall with average room temperature and relative humidity conditions.
2. Drill a small hole in the wall and run low voltage wiring to the location
chosen. Pull about 6" of wire through the hole. Plug the opening to
prevent drafts from affecting the humidistat operation.
3. Remove the knob and housing from the base by prying with a small
screwdriver at the notch in the side of the housing. Copy serial number,
located on housing back, onto the warranty registration.
4. Mount the base horizontally over the wires. Attach directly to the wall,
using four screws provided.
5. Connect wires to screw terminals on the control assembly as shown in
DIAGRAM 1, 2, 3, 4 or 5. Replace housing and knob.
R
R
A
T
ESIDENTIAL
IR
REATMENT
0°F
+10°F
+20°F
+30°F
+40°F
-18°C
-12°C
- 7°C
- 1°C
35%
40%
45%
45%
45%
30%
35%
40%
45%
45%
25%
30%
35%
40%
45%
20%
25%
30%
35%
40%
15%
20%
25%
30%
35%
10%
15%
20%
25%
30%
10%
10%
15%
20%
25%
P
RODUCTS
MOUNTING ON THE RETURN AIR DUCT
Do not install the humidistat on the warm air duct.
1. Locate the humidistat at least 24" upstream of the humidifier or bypass on
the return air duct. Avoid areas of direct radiation like secondary heat
exchangers in the fan compartment.
2. Place template using level. Cut sensor hole as shown on template. Drill
four 3/32" holes as shown.
3. Remove the knob and housing from the base by prying with a small
screwdriver at the notch in the side of the housing. Copy serial number,
located on housing back, onto the warranty registration.
4. Place the outer part of the foam gasket on the humidistat base and mount
the base with four screws. Low voltage wire may enter the humidistat
+50°F
under the foam seal.
4°C
10°C
5. Connect wires to screw terminals on the control assembly as shown in
45%
DIAGRAM 1, 2, 3, 4 or 5. Replace housing and knob.
45%
LOCATING OUTDOOR TEMPERATURE SENSOR
Determine suitable location. If it is impractical to utilize the outdoor
temperature sensor, place the manual mode dial plate on the housing before
45%
replacing knob and move the mode selection jumper (see wiring diagram 1,
2, 3, 4 or 5).
45%
1. Outdoor temperature sensor may not be mounted on the South side of the
house or in direct sunlight.
2. Outdoor temperature sensor may not be located closer than 4 feet to exhaust
40%
vents, dryer vents, etc.
3. If outdoor temperature sensor is mounted in fresh air intake duct, make sure
35%
the probe is no further than 1 foot from outside wall.
4. Make sure wiring for outdoor temperature sensor is not close to other wires
particularly high voltage.
30%
5. Outdoor temperature sensor must be at least 6" above expected snow line.
WIRING
WARNING! Disconnect electrical power before beginning installation. 120
volts may cause injury or even death.
Refer to wiring DIAGRAM 1, DIAGRAM 2, DIAGRAM 3, DIAGRAM 4 or
DIAGRAM 5.
ALL WIRING SHOULD COMPLY WITH LOCAL ELECTRICAL CODES.
CHECKOUT
Check that L.E.D. glows green. With furnace in operation, turn humidistat to
"TEST" position. Observe that the humidifier operates for one minute then
shuts off.
IV. SETTINGS
WARNING! Do not set relative humidity too high during cold weather. Over
humidification can result in condensation, structural damage and mold.
Condensation within a building's structure can cause loss of structural
strength. Condensation can also enable mold and mildew growth resulting in
personal injury and damage to building structure and contents.
Refer to OPERATING MODES for proper settings.
WIRING DIAGRAMS
DIAGRAM 1
24 V
120V. POWER SUPPLY SWITCHED WITH FURNACE OPERATION
OWNERS MANUAL
WIRING 24V. BYPASS HUMIDIFIER
JUMPER WIRE INSTALLED
MODE SELECTION JUMPER
(MOVE TO RIGHT FOR MANUAL MODE)
AUTO/MAN
OUT
SENSOR
AUTO MODE OUTDOOR TEMP. SENSOR
(NOT USED IN MANUAL MODE)
727-58
24 V. TRANSFORMER
(OMIT IF POWER SUPPLY
IS 20-30 VAC)
2
HUMIDIFIER 24V.
SOLENOID VALVE
OR 24V. DRUM MOTOR
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