ERV
TRC1600
13
WWW.SOLERPALAU-USA.COM
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
1.800.961.7370
CONTROL WIRING
SCHEMATICS
INSTALLATION
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
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 wiring schematics elsewhere in this manual.
CONTROL WIRING EXAMPLES BY TYPE OF APPLICATION
A.
Single 2-wire Control, unpowered:
Use schematic below if the control requires no power from the
unit to operate and acts like a simple on/off switch. The control must not supply any power to the ERV
unit. Install jumper (provided) between terminals 2 & 3. Connect the control’s contacts to terminals
1 & 4 to operate the ERV’s Isolation Relay for OA/FA Blower. Install jumper between terminals 4 & 5 to
operate the ERV’s Isolation Relay for the RA/EA Blower.
C. Control Sending 24VAC “On” Signal (from an external power source) to ERV:
Make sure jumper
is NOT installed between Terminals 2 & 3. Now you safely can apply 24VAC to the Terminals 3 & 4 to
operate the ERV’s Isolation Relay for OA/FA Blower. Install jumper (provided) between terminals 4 & 5
to operate the ERV’s Isolation Relay for the RA/EA Blower.
B. Single 2-wire Control on separate Power Supply, no power present at Control Output:
Wire as shown for the Single 2-wire control (A. above).
D. Control operating on Unit’s 24VAC Power Supply:
24VAC power is available at the Terminals 1 & 2.
CAUTION:
external control system should not draw more than 8VA. Install jumper (provided) between
terminals 2 & 3.
Connect the switched output of the Control to Terminal 4 to operate the ERV’s Isolation Relay for OA/FA Blower.
Install jumper between terminals 4 & 5 to operate the ERV’s Isolation Relay for the RA/EA Blower.
D
AN EXTERNAL CONTROL USING
UNIT’S 24VAC POWER SUPPLY
C
24VAC FROM AN EXTERNAL SOURCE
A
A SWITCH OR NON-POWERED CONTROL
USING UNIT’S 24VAC POWER SUPPLY
