33
Installation of Mechanical Timers
The Healthy Climate ERV/HRV is compatible with two wire,
“dry contact” mechanical timers. This may be useful for ret-
rofit situations where only two wires are available for the
timer.
Install the two wire timer by connection a jumper wire be-
tween ON and RED. Connect the two timer wires to ON
and HI.
NOTE: An alternative to using the 2-wire timers is to install
the system with wireless timers.
1
2
3
4
5
6
7
8
9
10
LOW
ON
RED
YEL
GRN
HI
COM
NO
NC
BLK
Connect the two wires from the timer
to ON and HI on the terminal block
2-wire timers
require a jumper
between ON and
RED on the
terminal block
OFF
10
20
40
30
50
60
Caution: Low Voltage Only
Figure 38. Mechanical Timer Installation
Interlocking ERV/HRV Blower to Air
Handler/Furnace Blower
Connecting the ERV/HRV unit as illustrated will ensure the
air handler/furnace blower motor is operating whenever the
ERV/HRV blower is ventilating.
The ERV/HRV unit must be interlocked to the furnace/air
handler or iComfort E30 with a simplified (return/return) in
-
stallation and should be interlocked with a partially dedicat-
ed installation as illustrated in the following figure.
1
2
3
4
5
6
7
8
9
10
LOW
ON
RED
YEL
GRN
HI
COM
NO
NC
BLK
R
Thermostat
G W
Y C
R G W Y
Wire
connection
CAUTION: Low Voltage Only!
Furnace or air handler
Figure 39. Interlocking
NOTE: Interlock is only required with either the S30 or E30
if another control can activate ventilation, such as a
wall switch, etc.
Electrical Connections
Plug the ERV/HRV directly into a standard designated
120VAC electrical outlet. Use of an extension cord is NOT
RECOMMENDED for this appliance.
If further wiring is required, then a licensed electrician
should make all electrical connections. It is recommended
that a separate 15 amp/120 volt circuit be used. See wiring
diagrams for the units described in section titled ”Unit Wir
-
ing Diagrams” on page 35.
WARNING
Electric Shock Hazard
Can cause injury or death.
Confirm the polarity of the 120VAC supply source at the
receptacle for the ERV/HRV device. The door safety
switch of the ERV/HRV can cause an electrical shock
hazard if the polarity is not properly wired. The grounding
means of the ERV/HRV device should also be confirmed.
The proper polarity and ground can be checked at the
receptacle using a 3−prong plug device called a ’polarity
tester’. Another method to check for proper polarity is
to use a volt−ohm meter to check for voltage from hot
(black) to ground (chassis) at the ERV/HRV.
MAIN CONTROL STANDBY SETTING
The ERV/HRV 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 ERV/HRV is in the OFF
position.
The fully−off feature can be modified to standby−off by add
-
ing a jumper on the Terminal Block between 2 (ON) and 3
(RED) as illustrated in the following figure.
Standby can also be achieved by setting the main control
to the ON position and selecting speed 0 (see note). Timers
and/or additional controls will initiate high speed ventilation
when activated.
1
2
3
4
5
6
7
8
9
10
LOW
ON
RED
YEL
GRN
HI
COM
NO
NC
BLK
Figure 40. ERV/HRV Terminal Block
Содержание ERV5-130
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