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Installation instruction for Remote Option
The remote option (option C) allows start / stop and alarm monitoring functions from a remote location. The option is
universal for all VSS dryer products. There are four terminal on the remote option board. Terminals 1:5 are active
and are used for remote start / stop functions. Terminals 2:6, 3:7, and 4:8 are dry and used for remote alarm
monitoring functions. Follow the procedures outlined below to install the remote option.
CAUTION: DEENERGIZE THE AIR DRYER AT THE MAIN SOURCE OF ELECTRICAL SUPPLY BEFORE
BEGINNING INSTALLATION OF REMOTE OPTION. FAILURE TO DO SO COULD RESULT IN PERSONAL
INJURY AND / OR EQUIPMENT DAMAGE.
1. Install option board in the rear section of the electrical compartment of the dryer. There are two predrilled holes that
are designed to accept self-tapping or sheet metal screws. The terminals on the control board should face the rear of
the dryer when properly installed.
2. Remove jumper (JP1) from the rear of the main dryer solid state control board. JP1 location is detailed in the dryer
Operation and Maintenance manual.
Remote option will not work unless JP1 is removed.
3. Plug the “pigtail” provided with the remote option into the blank jack on the back of the main control board.
The switch on the remote board must be in the REMOTE position for the option to work properly
.
4. At this point, the option is installed and ready for customer supplied connections. Please refer to the diagram of the
option terminal board when making connections.
PLEASE NOTE: CONTACT RATINGS ON REMOTE OPTION BOARD ARE 48 VAC/DC.
a. Terminals 1 and 5 are connected. Power is supplied to one side of the contacts from the
solid state control board and parallels the on off function on the dryer. When a switch is installed
between 1 and 5 the dryer will turn on when the switch is closed and shut off when the switch is open.
b. Terminals 2 and 6 are connected to dry contacts on the control board that close when the dryer is
on and can be used to give a remote RUN indication. Connect customer-supplied power to
number 2 side on the terminal. Connect number 6 side to customer supplied device such as light,
relay coil. etc. that will be used to give remote indication.
c. Terminals 3 and 7 are connected to dry contacts on the control board that close when a
HIGH REFRIGERANT TEMP OR HIGH TEMP alarm is sensed and can be used to give a
remote high temperature indication. Connect customer-supplied power to number 3 side on
the terminal. Connect number 7 side to customer supplied device such as light, relay coil. etc. that
will be used to give remote indication.
d. Terminals 4 and 8 are connected to dry contacts on the control board that close when a
HIGH DEWPOINT alarm is sensed and can be used to give a remote high dewpoint indication.
Dewpoint alarm will not activate until 15 minutes after the dryer is turned on to allow it to reach
operating conditions. Connect customer-supplied power to number 4 side on the terminal. Connect
number 8 side to customer supplied device such as light, relay coil. etc. that will be used to give remote
indication.
