Residential HRV/ERV
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5. One of the jumpers comes from the factory offset. Moving the offset jumper to align
with the other jumpers is what changes the unit from Master to Slave mode. Using
your fingertips, gently pull the offset jumper away from the pins and reinstall so that it
connects both pins on that row.
Using metal tools, such as needle-nose pliers, may
damage either the jumper or circuit board.
Reinstalling the jumper
6. Reverse the process above by reinstalling the circuit board cover, followed by the
terminal block. The unit is now in Slave mode and can be installed.
Using Slave Mode
When the unit is in slave mode, there are three modes of operation available; low speed
exchange, high speed exchange, and EvacMAX™.
To enable low speed exchange, a connection must be made between terminal connect 1
and connection 3. If this connection is broken, the unit will default back to standby. This
connection can be made using any third party switch or dry contact controller, such as a
smart thermostat with integrated ventilator control or a Programmable Timer .
Enabling Low Speed
NO
CO
M
RED
WHT
BLK
8 7 6
2
1
3
4
5
TERMINAL BLOCK
NC
GRN
GRN
(SWITCH)
