Tjernlund COP2 Constant Operating Pressure Exhaust Control 8504208 - Manual (Page 6)

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IMPORTANT
The capacitor for the RT-Series fan should remain within the junction box of the flexible whip. Do not install within fan motor compartment.
Failure to wire cooling fan as directed voids warranty.
Installer must supply overload and disconnect protection as dictated by local and national codes. Do not use a fused disconnect.
INSTALLING RT-SERIES FAN ELECTRICAL WHIP
The RT series fan is shipped with an Electrical Whip Assembly which is not connected to the fan. Follow these instructions to connect and
wire the whip to the fan. Pull the wires out of the fan through the gasketed hole provided on the fan cover of the RT unit and wire nut the
fan leads to the corresponding colored wires on the free end of the whip.
Remove the (2) 8-32 nuts holding the gasket on the electrical access cover of the RT-Series fan. Carefully stuff the wire nutted connec-
tions back into the fan and secure the cover plate and gasket to the fan housing using the nuts removed in the above step.
Firmly tighten the (2) 8-32 nuts until the gasket compresses.
RT-SERIES FAN CONNECTIONS TO COP2 CONTROL
Secure the junction box on the opposite end of COP2 whip to the power supply conduit. Wire nut the 5 leads from the COP2 (Red,
White/Red, Ground, Black and White) to the corresponding colors of the RT Series Whip. Stuff Wires into 4 x 4 box on whip.
Place provided gasket on 4 x 4 weather tight box opening. Install the 4 x 4 box cover to the j-box and firmly tighten with provided screws
until the gasket compresses.
SUPPLY POWER TO THE COP2 CONTROL
Secure the junction box on the opposite end of COP2 whip to the power supply conduit. Place provided gasket on j-box, install the cover
to the j-box and firmly tighten until the gasket compresses.
IMPORTANT: Installer must supply overload and disconnect protection. COP2 Control power may be switched through a building man-
agement system, pressure switch or other 115 VAC switch
Connect 115 VAC supply voltage to L1, N and the ground terminal of the COP2 right side power terminal strip. Connect Cooling Fan BLK
and WHT terminals of COP2 right side power terminal strip to the Black and White cooling fan leads of the RT-Series fan. Connect Red,
WHT/RED stripe & Ground of COP2 right side power terminal strip the corresponding colored wires of the RT-Series fan.
TRANSDUCER CONNECTIONS
Connect the V+, COM and 1-10 V terminal of the COP2 terminal strip to the corresponding terminals within the j-box of the Transducer.
ACTIVATION CONNECTIONS
Use any type of dry contact switch to close Activation position C1 to Activation position C2 in COP2. Alternatively, jumper position C1 to
position C2 for constant operation.
REMOVING POWER FROM & RESETTING VFD DRIVE
A fault can be reset on the VFD Drive if the call to C1 & C2 is removed and/or the Power
Switch to the VFD Board in lower right of COP2 box is turned off for a minimum of 1 minute
so capacitors can fully discharge. IMPORTANT: Cycling the VFD Power Swich off/on with-
out at least a minute delay may result in damage to the VFD.
WARNING: This power switch is for the VFD only. 115 VAC to BLK & WHT from COP2
to exhauster cooling fan, 115 VAC to COP2 VFD cooling fan and 24 VAC power supply
to Transducer will still be live! Disconnect main braker that supplies 115 VAC to L1 &
N on COP2 Control if it is necessary to disconnect all power in the COP2 control,
(See Diagram F).
WARNING: THIS POWER SWITCH IS FOR THE
VFD ONLY. 115 VAC TO BLK & WHT FROM
COP2 TO EXHAUSTER COOLING FAN, 115
VAC TO COP2 VFD COOLING FAN AND 24
VAC POWER SUPPLY TO TRANSDUCER WILL
STILL BE LIVE! DISCONNECT MAIN BRAKER
THAT SUPPLIES 115 VAC TO L1 & N ON COP2
CONTROL IF IT IS NECESSARY TO DISCON-
NECT ALL POWER IN THE COP2 CONTROL.
DIAGRAM F