ERV
TRC800 & TRC800V
WWW.SOLERPALAU-USA.COM
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
1.800.961.7370
12
INSTALLATION
Connect Blue & First Yellow Leads
Connect Control's N.O. Output to 2nd Yellow Lead
External Control is
powered by 24VAC
available between the Red
and Blue leads.
8VA Maximum Load.
Unit 24VAC
Power Supply
C
UNIT INTERNAL CONTROL WIRING
(SIMPLIFIED)
AN EXTERNAL CONTROL DEVICE USING
UNIT'S 24VAC POWER SUPPLY
Isolation
Relay Coil
MP
U
Image 2 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
BLUE
YEL
YEL
RED
NOTE:
The simplified schematics below show
only the relevant portions of the low-voltage
control circuit in the ERV unit and representational
external control approaches. See the complete
unit schematics elsewhere in this manual.
CONTROL WIRING EXAMPLES BY TYPE OF APPLICATION
A.
Single 2-wire Control:
Use this schematic if the control requires no power to operate and acts like
a simple on/off switch. The control must not supply any power to the ERV unit. Connect the blue lead
to one yellow lead. Connect the control’s contacts to the red lead and the remaining yellow lead.
Control on separate Power Supply, no power present at Control Output:
Wire as shown for the Single 2-wire control.
C.
Control operating on Unit’s 24VAC Power Supply:
24VAC power is available at the blue and red
leads. Connect one of the yellow leads to the blue lead. Connect the switched output of the Control
to the red lead to operate the ERV’s isolation relay.
B. Control Sending 24VAC “On” Signal (from an external power source) to ERV:
Make sure the blue
and red leads are separately capped and not connected to any other wires. Now you safely can apply
24VAC to the two yellow leads to operate the ERV’s isolation relay.
Be careful if the external control system provides
24VAC power at its control output: make sure
blue and red leads are separately capped and not
connected to any other wires.
CAUTION
Unit 24VAC
Power Supply
Cap Blue and Red Leads when using
24VAC from external source.
C
UNIT INTERNAL CONTROL WIRING
(SIMPLIFIED)
24VAC FROM AN EXTERNAL SOURCE
Isolation
Relay Coil
Image 3 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
RED
YEL
YEL
BLUE
Unit 24VAC
Power Supply
Connect Blue & First Yellow Leads
Connect Switch between Red &
Second Yellow Leads
UNIT INTERNAL CONTROL WIRING
C
Isolation
Relay Coil
(SIMPLIFIED)
A SWITCH OR NON-POWERED
CONTROL USING UNIT'S 24VAC POWER
SUPPLY
Image 1 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
BLUE
YEL
YEL
RED
A
A SWITCH OR NON-POWERED CONTROL
USING UNIT’S 24VAC POWER SUPPLY
B
24VAC FROM AN EXTERNAL SOURCE
C
AN EXTERNAL CONTROL DEVICE USING
UNITS 24 VAC POWER SUPPLY
CONTROL WIRING SCHEMATICS
Make sure the control provides
no voltage or current at its output
terminals.
CAUTION
Supply only 24VAC (not VDC) from
a Class II Power Source.
CAUTION
External control system should
not draw more than 8VA.
CAUTION
