Ortech OD22025 Manual

MODEL:OD22025

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
a). Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
b). Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power
from being switching on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning
device, such as a tag, to the service panel.
c). Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards,
including fire-rated construction codes and standards.
d). Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to
prevent backdrafting. Follow the heating equipment manufacturer's guideline and safety standards such as those published by the
National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers
(ASHRAE), and the local code authorities.
e). When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
f). Ducted fans must always be vented to the outdoors.
g). Acceptable for use over a tub or shower when connected to a GFCI (Ground Fault Circuit Interrupter) - protected branch circuit
(ceiling installation only).
h). This unit must be grounded.
i). Not for Use in Kitchens.
k). To reduce risk of fire and to properly exhaust air, be sure to duct air outside – Do not vent exhaust air into spaces within walls or
ceilings or into attics, crawl spaces, or garages
l). WARNING: To Reduce The Risk Of Fire Or Electric Shock, Do Not Use This Fan With Any Solid-State Speed Control Device.
m). The fan must not be installed in a ceiling thermally insulated to a value greater R40.

CAUTION

1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
2. This product is designed for installation in ceilings up to a 12/12 pitch (45 degree angle). Duct connector must point up.
DO NOT MOUNT THIS PRODUCT IN A WALL.
3. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off
power unit.
4. Please read specification label on product for further information and requirements.
*The manual in electronic format can be download in our company web, or obtained from our dealer.
CLEANING & MAINTENANCE
For quiet and efficient operation, long life, and attractive appearance - lower or remove grille and vacuum interior of unit with the dusting
brush attachment.The motor is permanently lubricated and never needs oiling. If the motor bearings are making excessive or unusual noi-
ses, replace the motor with the exact service motor. The impeller should also be replaced.

OPERATION

Fan with no accessories:Use an on/off switch to operate this fan. See "Connect Wiring" for details (Fig.1).
Fan with ADD on Humidity Sensor and no wall switch (Fig.3)
Fan with ADD on Humidity Sensor and wall switch to manually activate the fan (The fan and humidity sensor can be operated
separarely by wall switch . Fig.2 )

HUMIDITY SENSOR

The humidity-sensing fan uses a sophisticated humidity sensor that responds to: (a) rapid to moderate (user-adjustable) increases in
humidity or (b) humidity above a user-adjustable set-point (50%-100% relative humidity). The humidity sensor may occasionally turn the
fan ON when environmental conditions change. If the fan continuously responds to changing environmental conditions, "H" (means
"humidity") adjustment may be required. This figure is factory-set for about 75% (Ambient temperature of 25℃).

SENSITIVITY ADJUSTMENT

The "H" has been factory set for most shower applications. However, if the fan is in a tub area or is being used for dampness control,
the "H" may need to be increased toward maximum "+". If the control is responding too often to changing environmental conditions,
movement toward less "-" "H" may be required.To adjust the "H":
1. Disconnect power at service entrance.
toward "+" or "-". 4. Turn on power and check operation by turning on the shower or other humidity source until the fan turns on.
5. Repeat above steps if necessary. When the temperature changes, humidity sensor values will have deviation.

TIMER ADJUSTMENT

The humidity sensing fan has a "T" (means timer) that can be adjusted from 5 to 60 minutes (factory-set at about 20 minutes). This "T"
controls the length of time that the fan remains ON after the sensor has stopped sensing a rise in humidity and the humidity level is
below the user-adjustable set-point. To adjust the "T":
2. Through the grille, locate the slot marked "H".
READ AND SAVE THESE INSTRUCTIONS
Installer: Leave this manual with the homeowner.
1
VENTILATION FAN
3. Carefully rotate the "H" adjustment