Orion System OE338-23-XX - Manual (Page 4)

Form: ORION-OE268-OvervoltageModule-1A.doc Page 1 of 1
Description
The OE268 Over-voltage Module is de-
signed to protect against higher than normal
incoming control voltages that exceed the
normal 24VAC +/-10%. WattMaster recom-
mends the use of the OE268 Over-voltage
Module anytime the measured voltage to the
controller is above 27 VAC. The circuitry
contained on the OE268 Over-voltage Mod-
ule will safely limit the AC control voltages
being supplied to the devices connected to it.
The OE268 Over-voltage Module is specifi-
cally designed to work with and protect the
following products. The groups or items
listed below on each line, require that you
use (1) OE268 Over-voltage Module to
power that group or item.
•
VCM Controller and a 2 or 4 Slot Ex-
pansion Base Board
•
GPC Plus Controller and a 2 Slot Ex-
pansion Base Board
•
GBD Controller
•
MODGAS or MODGASII Controller
•
MHGRV, MHGRVII or MHGRVIII Con-
troller
Mounting
The OE268 Over-voltage Module is supplied mounted in a plastic Snap Track channel. Carefully remove the
module from the Snap Track by sliding it out of the Snap Track channel. Mount the Snap Track to the control
panel or enclosure base using one of the supplied sheet metal screws to secure it through the pre-drilled hole in
the Snap Track channel. If desired, the second supplied screw can be used to further secure the Snap Track by
drilling a second hole and using it to fasten the Snap Track. Carefully slide the Over-voltage Module back into the
Snap Track Channel to complete the mounting procedure.
Wiring
Warning: Correct Polarity must be observed on all wiring connections or damage to the controller and/or the
OE268 may result. Wire sizes, types and wiring practices used should conform to all applicable na-
tional & local electric code requirements.
•
First remove the power from the 24 VAC control transformer supplying the controller’s low voltage power.
•
Connect the TB2 “Power Input” terminal labeled “AC IN” to the 24VAC control supply voltage
•
Connect the TB2 “Power Input” terminal labeled “GND” to the 24VAC “common or GND”
•
Connect the TB1 “Power Output” terminal “+V” to the controller’s “24 VAC” power input terminal
•
Connect the TB1 “Power Output” terminal “GND” to the controller’s “GND” power input terminal
•
Reconnect the power to the control transformer and observe controller for correct operation.
Technical Data OE268 Over-voltage Module
Input Voltage 22 to 32 VAC Power Consumption Less Than 2 Watts
Output Voltage 30 VDC Nominal Wiring Connections Terminal Blocks
Operating Temperature -30
°F to +150° F Operating Humidity 5-95% RH Non-Condensing
One Year Warranty WattMaster reserves the right to change specifications without notice
OE268 Over-voltage Module