7
1.800.627.4499
TC7D Series Digital Time Clock
ACCESSORY
ELECTRICAL
The Normally Closed (N.C) contacts of one
or more additional Low Voltage Controls
may be connected to ERV unit's Terminals 1
& 4. Do not apply power to these terminals.
Unit's 24VAC
Power Supply
ERV INTERNAL CONTROL
C
Isolation
Relay Coil or
Damper
Actuator Coil
WIRING (SIMPLIFIED)
1
2
3
4
5
1
2
3
4
5
TC7D-W
TC7D-E
5
4
3
2
1
1
2
3
BLACK
RED
YEL
1X, 1.5RT-LE
C
FIGURE 3.1.5 HE1XRT, HE1.5RT WITH INDEPENDENT BLOWER CONTROL AND HE2X THROUGH LE10X SCHEMATIC
24VAC Class II Power Supply
provided by other
1
2
3
4
5
TC7D-W
TC7D-E
5
4
3
2
1
6 5 4 3 2 R C
0-10V
DC
24 V
AC
COMM
ON
RH-W
CTH-291
0-10VDC THERMOSTAT
Supplied with RH-W Heaters
When Normally Closed (NC) contacts open at desired times, the thermostat
will operate in Comfort Mode. When NC contacts are across RH-W
thermostat terminals the thermostat will operate in Economy Mode which
reduces the RH-W heater outlet set-point temperature by 8 degrees F.
RH
NOTE: Remove
supplied wires from
the time clock spade
terminals prior to
wiring to a RH-W thermostat
as shown.
FIGURE 3.1.6 RH-W ELECTRIC HEATER SCHEMATIC
NOTE: For HE1XRT
and HE2X through
LE10X models built
prior to 1/22/2011,
please call RenewAire
Customer Service at
800-627-4499 or email
RenewAireSupport@
RenewAire.com.
1
2
3
4
5
TC7D-W
TC7D-E
5
4
3
2
1
1
2
3
Unit's 24VAC
Power Supply
ERV INTERNAL CONTROL
C
Isolation Relay
Coil or Damper
Actuator Coil
WIRING (SIMPLIFIED)
1
2
3
10
The Normally Open (N.O.) contacts of one
or more additional Low Voltage Controls
may be connected to ERV unit in parallel
with the TC7D-E and TC7D-W.
EV450 +EC
FIGURE 3.1.3 EV450 ECM SCHEMATIC
1
2
3
4
5
TC7D-W
TC7D-E
5
4
3
2
1
1
2
3
1X and 1.5 +EC
Unit's 24VAC
Power Supply
ERV INTERNAL CONTROL
C
Isolation Relay
Coil or Damper
Actuator Coil
WIRING (SIMPLIFIED)
1
2
8
1
2
8
C
Isolation Relay
Coil or Damper
Actuator Coil
TB
(EA/RA)
TB
(OA/FA)
The Normally Open (N.O.) contacts of one
or more additional Low Voltage Controls
may be connected to ERV unit in parallel
with the TC7D-E and TC7D-W.
FIGURE 3.1.4 HE1X AND HE1.5 ECM SCHEMATIC
