Lennox A98USMV Installation Instructions Manual page 40

HRV/ERV
Terminal Block
HI
LOW
ON COM
RED
NO
YEL NC
GRN
BLK
Wire Jumper required between ON and RED terminals.
ACC1 is always low-stage for single- and two-stage ventilators.
Figure 55. Comfort Sync A3 with Ventilation (Fresh Air Damper, ERV and HRV)
Page 40 of 74
Smart Hub
HD
Display
Subbase
Issue 2346
Communicating
Indoor Unit
508364-01