Nu-Air Ventilation Systems Inc. - HRV Operating & Installation Manual
Rev. 2.3 Aug. 19, 2014 - 25 -
10.17. WIN-20 Control Wiring
Connect 3-conductor wire to the 24V (10-wire) removable terminal block.
Notes:
1. If you are using ONLY a WIN-20 to control your unit, you must connect a jumper wire between
R and SB on the 24V (10-wire) removable terminal block. In this situation you can add
continuous low speed operation by connecting a jumper wire between R and LO. Consult local
building code in case a centrally located control with an on/off switch is required.
10.18. Remote On/Off (Two-Wire) Switching
Use 2-conductor wire to the 24V (10-wire) removable terminal block.
UNIT 24 VAC REMOVABLE TERMINAL
BLOCK
PWR (red)
LED (yellow)
SWITCH
(black)
Up to 6 Win-20 timers may run off of one system.
WIN-20 can be combined with ES Series controls
or 24V controls discussed in this document.
For intermittent high speed operation, connect dedicated (RNC) wall
switch, CO
2
sensor, etc. to R and Hi terminals.
For continuous low speed, connect jumper wire to R and LO
terminals.
For two-wire switching, and where local building regulations permit,
Nu-Air recommends a jumper wire between R and SB to engage the
unit in standby mode when intermittent operation is desired.
*It is not necessary to connect jumper wires R-SB and R-LO (low
speed overrides standby).
UNIT 24 VAC REMOVABLE TERMINAL BLOCK
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