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Instruction Sheet
Note: Wall plate not included – Use Broan Part No. S97012925 (or equivalent)
Before installing control, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.
Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards.
(Factory default settings shown.)
Wire terminals accept up to #12 AWG MAX solid and stranded wire.
The control has an automatic sensing mode (AUTO SENSE) that senses increasing changes in humidity level (i.e. Sense on Rise). Once the threshold is met, the bath fan will activate within 2 minutes with the device located within 8 feet from the humidity source (e.g. shower head or faucet). Fan activation may take longer if the Control is located further than 8 feet from the humidity source. The fan will remain ON based on the user adjustable TIME function (See TIME Potentiometer description).
TIME: User adjustable from 10-60 minutes per hour, in 10 minute increments
AUTO SENSE / RH% / CYCLE: AUTO SENSE
SENSITIVITY: Active; user adjustable from LO to HI
Control Function:
SENSE ON RISE is ACTIVE
SENSITIVITY is ACTIVE
The control provides a pre-set ventilation ON TIME for meeting continuous ventilation codes. After the initial ON time is set by manually turning the fan ON, the control will provide continuous activation cycles every hour. Also, Sense on Rise is active in the CYCLE mode, so if the control is in the "Fan OFF" portion of the cycle and it senses a rise in humidity it will bypass the remainder of the OFF cycle and start a new ON cycle with a time duration equal to the TIME potentiometer setting.
To calculate the applicable TIME potentiometer setting, use the following formula: TIME potentiometer setting = (required CFM1 ÷ fan CFM) x 60
1 from ASHRAE 62.2 formula/table (based on square footage and number of bedrooms)
TIME: User adjustable from 10-60 minutes per hour, in 10 minute increments
AUTO SENSE / RH% / CYCLE: CYCLE
SENSITIVITY: Active; user adjustable from LO to HI
Control Function:
SENSE ON RISE is ACTIVE
SENSITIVITY is ACTIVE
The control has a RH% mode with a user adjustable threshold relative humidity level. The RH% setting can be adjusted from 20 to 80% RH in 10% RH increments. Once the threshold is met, or if SENSE ON RISE detects an increase in humidity, the connected fan should activate within 2 minutes with the device located within 8 feet from the humidity source (e.g. shower head or faucet). Fan activation may take longer if the Control is located further than 8 feet from the humidity source. The fan will remain ON based on the user adjustable TIME function.
TIME: User adjustable from 10-60 minutes per hour, in 10 minute increments
AUTO SENSE / RH% / CYCLE: RH%; user adjustable from 20-80% in 10% RH increments.
SENSITIVITY: Inactive
Control Function:
SENSE ON RISE is ACTIVE
SENSITIVITY is INACTIVE. When room humidity reaches RH% potentiometer setting:
The TIME potentiometer is used to set the fan run time every time the fan turns ON. It can be adjusted to run between 10 and 60 minutes, in 10 minute increments. In CYCLE mode the TIME selection is the portion of each hour that the fan will run, and the countdown begins when CYCLE mode is selected and the fan turns ON. In MANUAL mode the TIME countdown begins when the fan is turned ON using the ON/OFF switch. In AUTO SENSE and RH% modes the TIME countdown begins when the relative humidity stops rising.
The SENSITIVITY potentiometer is used to adjust the controls' sensitivity to ambient humidified air and to the size of the room. In a low humidity environment and/or large room, it may be necessary to adjust the SENSITIVITY potentiometer to a higher setting (MED to HI) to increase the control sensitivity for humidity detection. In a high humidity environment and/or small room, it may be necessary to adjust the SENSITIVITY potentiometer to a lower setting (LO to MED) to reduce the control sensitivity for humidity detection and to prevent undesired activations.
Note: Regardless of all other settings, the front panel blue LED will always be ON when fan is ON, and OFF when fan is OFF.
The control has a manual operation mode with the ability to turn the fan ON or OFF at the user's discretion. Press and release the lower control switch to turn the fan ON or OFF.
In addition to manually turning the fan OFF, the manual mode also utilizes the automatic OFF function with user adjustable fan ON time duration, as described previously in the TIME Potentiometer section. With this feature the user can manually turn the fan ON and not be concerned about manually turning the fan back OFF, because the TIME function will turn the fan OFF automatically.
The manual mode will override the AUTO SENSE / RH% / CYCLE modes whenever they are active. This mode setting will turn OFF all user adjustable set points, with the exception of the TIME setting, until the switch is manually turned OFF or the switch turns OFF automatically due to the TIME countdown, at which time the unit will return to the previous modes setting(s) following a 5-minute delay.
In other words, if the fan is turned ON manually, and then turned OFF manually (or due to the TIME countdown completing its cycle), and if the previous setting was RH%, then following a 5-minute delay the control will return to the RH% setting and turn the fan ON if the RH set point is reached, surpassed, or if the Control senses the appropriate rate of rise of humidity.
If the previous setting was AUTO, the control will turn the fan ON (after the 5-minute delay) if the control senses the appropriate rate of rise of humidity.
TIME: User adjustable from 10-60 minutes per hour, in 10 minute increments
AUTO SENSE / RH% / CYCLE: Inactive
SENSITIVITY: Inactive
Control Function:
Regardless of the MODE the unit is in, pressing the front panel switch overrides that mode to immediately turn the Fan ON if it was OFF, or OFF if it was ON.
Broan-NuTone LLC (the "Company") warrants to the original consumer purchaser of its product ("you") that the product (the "Product") will be free from material defects in the Product or its workmanship for a period of five (5) years from the date of original purchase.
To qualify for warranty service, you must
Broan-NuTone LLC 926 West State Street, Hartford, WI 53027 www.broan.com 800-637-1453
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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