NuTone ssQTXe080 Control operation, How System Works, How LED works, Indoor air quality Network

models sSQTXE080 • sSQTXE110

control operation

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How System Works

Broan SmartSense® system is design to provide recommended ventilation for desirable indoor air quality. Related ventilation requirements of *ANSI/ASHRAE Standard 62, “Ventilation for Acceptable Indoor Air Quality” are fulfilled when this system is installed accordingly. Ventilation level, which is based on home square footage and number of bedrooms, is easily set during installation. Power outages do not affect settings, since they are stored in power independent (nonvolatile) memory. Energy usage is optimized by monitoring fan on‑time and adjusting automatic ventilation as needed. Indoor air quality is provided 24-hours a day, 7-days a week.

A single Broan SmartSense® system is powerful enough to fulfill ventilation rates for larger homes; however, it is recommended to use multiple installations for homes with multiple bathrooms. Multiple installations provide distributed ventilation throughout the home. Multiple installations are linked and communicate through home’s normal power circuits to form an indoor air quality network.

Broan SmartSense® controls are designed and factory set for multiple installation homes. If a single Broan SmartSense® system is installed then System Level must be adjusted accordingly; otherwise, fan may run continuously.

Additional features, which are turned off at factory, include Vacation and Disabled modes. Vacation mode temporarily disables system until Master fan is manually turned on. Disabled mode removes system from automatic ventilation usage. Disabled mode does not affect manual operation.

*American National Standards Institute / American Society of Heating, Refrigerating and Air-Conditioning Engineers

How LED works

LED works differently in Run and Program modes.

Run Mode: LED is off when fan is off. LED is on when fan is on manual ventilation; turned on by pressing ON paddle. LED turns on briefly every second (fast-blink) when fan is on automatic ventilation; turned on by Broan SmartSense® system.

Program Mode: LED is on while SET button is pressed. LED turns on and off every second (slow-blink) when system is in Program mode.

indoor air quality NETWORK

A single Broan SmartSense® system is powerful enough to fulfill ventilation rates for larger homes; however, it is recommended to use multiple installations for homes with multiple bathrooms. Multiple installations provide distributed ventilation throughout the home.

Multiple installations communicate through a home’s electrical power circuits to form an indoor air quality network. Communication pathways are called links. A phase coupler

is required if multiple installations are connected to both electrical power phases.

Individual systems in a multiple installation home can operate independently; although, it is recommended to link multiple installations as an indoor air quality network. If a single Broan SmartSense® system is installed or independent system operation is desired, proceed with “How To Set System Level” section. If System Level is not adjusted, fan may not shut off automatically or run unnecessarily too long.

One Broan SmartSense® control is selected as system Master during set up. Any control can be selected as system Master, but typically master bathroom control is chosen. All controls are factory set as system Masters.

SmartSense® controls that are linked to Master control are called Slaves. One Master control can link up to 10 Broan SmartSense® Slave controls.

HOW TO link smartsense® system

1.Unless another control is designated and clearly marked on frame, under decorative plate, or documented on this instruction sheet as Master control, go to master bathroom control.

2.Put Master control in Program mode; press and hold SET button for 3-seconds and then release it.

Note: Master control will automatically exit Program mode after 4-minutes.

3.LED should be turning on and off every second (slow‑blink); if it isn’t then repeat step 2.

4.Go to first control to link as a Slave.

5.Press and hold SET button until fan turns on. If fan doesn’t turn on in less than 5-seconds, make sure Master is in Program mode; which is indicated with LED slow‑blink.

Note: At same time Slave turns on, Master fan turns on. Master fan should turn off automatically in less than 15‑seconds.

6.Release Slave’s SET button.

7.If Master control has not automatically turned Slave off then press Slave’s OFF paddle to manually turn it off.

8.If there are more Slave installations then go back to Master control and repeat steps 2 through 8.

Note: Master control will automatically exit Program mode 4-minutes after it is started. Slave link needs to be made before Master automatically exits Program mode or Master control’s Program mode needs to be started again.