Nu-Air Ventilation Systems Inc. - HRV Operating &Installation Manual
Rev October 10, 2010 - 15 -
4.2. ES-T1
This timer is used to make the unit operate in high speed for 20, 40 or 60 minutes and is typically
installed in bathrooms, kitchens and workspaces. You may toggle between functions or even cancel a
high speed run by tapping the touch pad. The ES-T1 will initiate timed high speed ventilation when the
unit is in Standby mode from another control or a jumper wire installed on the HRV control board. Use
4-conductor wire and connect to the 4-wire terminal block (See illustration Section 10.4).
4.3. ES-M1
This basic control allows you to select from standby mode, during which another control may initiate
operation, full-time low speed, or full-time high speed. The ES-M1 is ideal for installations where basic
ventilation functions are required or desired, especially in buildings with intermittent occupation. Use 4-
conductor wire and connect to the 4-wire terminal block (See illustration Section 10.4).
Functions:
1. No LED: HRV/ERV is OFF
2. Stby: Unit is in standby, ready for a command
3. Lo: Unit operates in low speed continuously
4. Hi: Unit operates in high speed continuously
4.4. ES-M2
While featuring the convenience of full-time standby and full-time low speed modes, the ES-M2 offers
the additional ability to ventilate in low speed for 20 minutes and then switch to standby for 40 minutes.
This control is perfect to use when you leave home and require just a little bit of ventilation to make
your home fresh when you return. Use 4-conductor wire and connect to the 4-wire terminal block. (See
illustration Section 10.4)
Functions:
1. No LED: HRV/ERV is OFF
2. Stby: Unit is in standby, ready for a command
3. Lo: Unit operates in low speed continuously
4. 20 Lo/40 Stby: Unit cycles between 20 minutes continuous low and 40 minutes standby.
4.5. ES-M3
Because ES Series units are equipped with a recirculation system that will not recycle bathroom air, the
ES-M3 control is just right for people who have secondary heating and cooling equipment, such as wood
stoves or room air conditioners. The re-circulation function of the ES-M3 enables you to re-circulate air
for 40 minutes of every hour from a heated or cooled space within your home, helping to alleviate the
problem of super-heated or super-cooled rooms. Use 4-conductor wire and connect to the 4-wire
terminal block (See illustration Section 10.4).
Functions:
1. No LED: HRV/ERV is OFF
2. Stby: Unit is in standby, ready for a command
3. Lo: Unit operates in low speed continuously
4. 20 Lo/40 Stby: Unit cycles between 20 minutes continuous low and 40 minutes recirculation.
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