How The Humidifier Works; Technical Support - GeneralAire 570 Serie Manuel D'instructions

The operating principle of the humidifier is based on the most efficient and economical means of evaporating water to the air. The humidifier uses only 2.5
watts of electrical power during operation, less than the smallest household light bulb. The heat necessary for evaporating water is produced by the furnace.
The water supply to the humidifier is controlled by the electric solenoid valve. The humidistat connected in series with the solenoid provides low voltage control
of the humidifier. The humidistat is designed for wall mounting in the living area or surface mounting on the return air duct. ELECTRICAL RATING: 24 VAC /
60 Hz.
Water flows through a strainer, is metered through an orifice to provide the proper amount of water, and is supplied to the evaporator pad by the distributor
trough. Approximately 200 CFM of air is by-passed from the warm air plenum through the humidifier and returned to the cold air plenum. Moisture is
evaporated to the air passing through the evaporator pad. Minerals are not blown into the air stream as occurs in atomizing humidifiers; they are left on the
evaporator pad where a high percentage is carried off with the waste water. When the humidifier is installed and operating, no adjustments are necessary other
than setting the control knob on the humidistat to the desired level of humidification. Leave knob on the humidifier in "HI" or "WINTER" position. To turn the
humidifier off, close water supply valve, switch electrical power off and turn humidistat off. If furnace is used for summer cooling or ventilating set air damper on
"LOW" or "SUMMER".
DO NOT SET RELATIVE HUMIDITY TOO HIGH DURING COLD WEATHER. EXCESSIVE HUMIDITY MAY CAUSE CONDENSATION ON WINDOWS OR IN
WALLS. REFER TO RECOMMENDED SETTINGS AS DESCRIBED IN THE HUMIDISTAT OWNERS MANUAL.
SYMPTOMS
Humidi er will not operate
Proper voltage present at solenoid
valve (24 VAC) but no water ow
Humidi er runs without
furnace operation or humidi er
never shuts o
Too much humidity in home and/or
condensation on windows
Where can I purchase
replacement parts?
* Humidistat is generally located on furnace return plenum or on an inside wall in the living space.
USA CUSTOMERS
General Filters, Inc.
43800 Grand River Ave.
Novi, MI 48375
www.GeneralAire.com
Engineering@generalfilters.com
Toll Free (866) 476-5101

HOW THE HUMIDIFIER WORKS

TROUBLESHOOTING
DIAGNOSTIC STEP
1. Set thermostat to operate both furnace burner and blower. Operation may be necessary for system power.
2. Humidity level in home may be higher than humidistat setting. Increase humidity setting on humidistat.*
3 . Verify water supply is on.
4. Check for voltage at the solenoid valve. Voltage should be 24VAC. Bypass the humidistat if necessary to isolate
the solenoid valve circuit.
5. Verify wiring of humidi er and humidistat.
1. Verify water supply is on
2. Verify metering ori ce is not obstructed. Very hard water with high mineral content may restrict the metering
ori ce in as little as one heating season. Replace metering ori ce if restricted. (part number GA4231)
1. Verify humidi er and humidistat wiring. Humidi er should operate with furnace burner or blower cycle.
1. Reduce the setting on the humidistat. Refer to CARE AND MAINTENANCE section of this manual to estimate a
humidity setting for the home based on outside temperature. *
1. Replacement parts can purchased through your authorized General Aire contractor or visit www.GeneralAire.com
for more information.

TECHNICAL SUPPORT

CANADIAN CUSTOMERS
Canadian General Filters, Ltd.
400 Midwest Rd.
Toronto, ON M1P3A9 Canada
www.CGFProducts.com
Sales@cgfproducts.com
Tel. (416) 757-3691