11
W R G
Y
W
R
G
C
Y
UNIT TERMINAL CONNECTOR
THERMOSTAT
TERMINALS
FOUR
WIRES
TWO WIRES
heating only
FURNACE
24-VOLT
TERMINAL BLOCK
TWO WIRES
COOLING SYSTEM
N
O
C
N
C
I O
C
OL Y R G B
W
R
G
Y
W
R
Y
R
G
Y
C
THERMOSTAT
TERMINAL
4 WIRES
2 WIRES
heating only
wiring
nuts
FURNACE
24-VOLT
TERMINAL BLOCK
2 WIRES
COOLING SYSTEM
NO
NC
C
UNIT TERMINAL CONNECTOR
N
O
C
N
C
I OC
O
L Y R G B
Standard furnace interlock wiring
Alternate furnace interlock wiring
A11215
Fig. 27 - Interlock Wiring
ELECTRIC CONNECTION TO THE
FURNACE
IMPORTANT
: Never connect a 120- volt AC circuit to the
terminals of the furnace interlock (standard wiring). Only use the
low voltage class 2 circuit of the furnace blower control.
For a furnace connected to a cooling system
On some older thermostats, energizing the “R” and “G” terminals
at the furnace has the effect of energizing “Y” at the thermostat and
thereby turning on the cooling system. If you identify this type of
thermostat, you must use the ALTERNATE FURNACE
INTERLOCK WIRING.
OPERATING THE HRV WITH THE
EVOLUTION AND INFINITY CONTROL
The ventilator has four settings in heating mode and three settings
in cooling mode.
Heating:
AUTO - the ventilator selects the speed based on indoor humidity
and outdoor temperature. It may cycle on/off every 30 minutes
depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
DEHUM - will only turn on if humidity is 3% over setpoint. The
speed is determined by indoor humidity and outdoor temperature.
Cooling:
AUTO - the ventilator selects the speed based on indoor humidity
and outdoor temperature. It may cycle on/off every 30 minutes
depending on humidity and outside temperature.
LOW - low speed all of the time.
HIGH - high speed all of the time.
If the fan speed is set to Auto and the ventilator wants to run, the
fan speed will run at High continuous speed. Otherwise, the fan
will stay at the chosen continuous fan speed.
Wiring
Remove top cover assembly from wall control and pass thermostat
wire through hole located on back of control before attaching to
wall. Connect Y, R, G, and B (yellow, red, green and black)
between wall control and HRV circuit board. Following color code
(see Fig. 28 and Fig. 29). Replace top cover assembly.
NOTE
: HRV wall control and circuit board operate on 12vdc.
YELLOW
Y
R
G B
RED
GREEN
BLACK
A98383
Fig. 28 - Typical Wall Control
% D´HUMIDITE RELATIVE HUMIDITY
´
% HUM. RELATIVE HUM.
55%
45%
35%
30%
EXT. TEMP. EXT.
MODE
MAINTENANCE
AIR EXCHANGE
ECHANGE D´AIR
´
20
25
30
40
50
60
70
80
10C/50F
0C/32F
–10C/14F
–20C/–4F
CONTROL
CONNECTOR
WALL CONTROL
YELLOW
RED
GREEN
BLACK
A98410
Fig. 29 - Control Connections
