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Healthy Climate
®
HRV/ERV Ventilators
Setting Standby" when using an Optional Main Control
The HRV/ERV will be fully−off" when the OFF position is
selected on the optional Main Control. Timers and/or other
controls will not function when the HRV/ERV is in the OFF
position.
The fully−off" feature can be modified to standby−off" by
adding a jumper on the Terminal Block between 2 (ON) and
3 (RED) (see figure 20).
Standby" can also be achieved by setting the main control
to the ON position and selecting speed 0 (see note). Tim-
ers and/or additional controls will initiate high speed ven-
tilation when activated.
NOTE − Speed 0 is not available on all controls.
1
2
3
4
5
6
7
8
9
10
LOW
ON
ED
R
YEL
GRN
HI
COM
NO
NC
BLK
CAUTION
Building codes in some areas re-
quire fully−off" functionality. Check
with your local building authority
before modifying the unit to stand-
by−off".
Unintentional operation of the HRV/
ERV by the end user may occur if the
unit is modified from fully−off" to
standby−off".
Figure 20. Terminal Block on HRV/ERV
Operating HRV/ERV without an Optional Main Control & Adding Dry Contact Controls
A Jumper must be in place between 2 (ON) and 3 (RED) on
the Terminal Block to activate the HRV/ERV for timers and/
or dry contact controls.
Adding Dry Contact Controls (see figure 21):
Low speed
A jumper between 2 (ON) and 1 (LOW) initiates low speed
ventilation.
High speed
A jumper between 2 (ON) and 6 (HI) initiates high speed
ventilation.
Dehumidistat
A dry contact for a dehumidistat is connected between 2
(ON) and 10 (BLK).
1
2
3
4
5
6
7
8
9
10
LOW
ED
R
YEL
GRN
HI
COM
NO
NC
BLK
LOW
SPEED
OR
HIGH
SPEED
DEHUMIDISTAT
The HRV/ERV must have
a jumper in place be-
tween 2 (ON) and 3 (RED)
on the Terminal Block
when installing the unit
without an Optional
Main Control.
Figure 21. Adding Dry Contact Controls on Ter-
minal Block on HRV/ERV
Installing/Operating Fan Timers
Installing 20 or 20/40/60 minute fan timers
NOTES –
− Timers mount in standard 2" x 4" electrical boxes.
− Wire multiple timers individually back to the unit.
− Use 3 wire 20−gauge (min.) low−voltage wire.
Operating 20 or 20/40/60 minute fan timers
Press and release the select button to activate a 20, 40, or
60 minute high−speed override cycle. The high−speed sta-
tus light will illuminate and the unit will run on high−speed
ventilation for the selected time.
The high−speed status light will dim after 10 seconds of run
time.
The high−speed status light will flash during the last 5 min-
utes of the cycle.
All timers connected to the unit will illuminate for the dura-
tion of the override when the select button is pressed.
1
2
3
4
5
6
7
8
9
10
LOW
ON
ED
R
YEL
GRN
HI
COM
NO
NC
BLK
HIGH
SPEED
Status
Lights
SELECT Button
Initiates high−speed
ventilation for 20, 40,
or 60 minutes.
GRN
YEL
RED
YEL
RED
GRN
TERMINAL BLOCK Connections
(From timer to terminal block)
Yellow on timer to YELLOW #4
Red on timer to RED #3
Green on timer to GREEN #5
Caution: Low Voltage Only
Figure 22. 20 or 20/40/60 Minute Timer
Installation
