System Hardware and Installation Tunnel Master
Jr. User Manual—Version 3.0
16 January 2016
Each toggle switch controls the operation of one output or service.
The switch has three positions:
UP = Manual Override. Manually turn on output. (This feature can be
turned off if desir ed.)
MIDDLE = Output Off. The output is off and will not fir e.
DOWN = Computer
controlled on position (normal).
The following instructions will provide detailed information on proper relay
box mounting and installation of the Entrance Keypad.
RELAY BOX INSTALLATION
For Entrance Keypad Installation, See “Entrance Keypad” on page 65.
Relay Box Mounting
All site wiring must be per formed by a licensed electrician that must
comply with all local and national codes.
The relay box must be securely mounted to the wall in the equipment
room
of the car wash. The relay box is designed to be located in a dry,
non-corrosive environment.
The relay box must be located so that conduit connections can be easily
made, and the relays can be readily accessed.
Relay Box Wiring
Install one approved 3/4”
conduit from the relay box to the entrance
keypad box located near the front of the wash tunnel. All conduit runs
should meet all local and national codes. Conduits shall be properly
connected and securely fastened to the boxes with Listed conduit hubs,
and shoul
d be tightened to the torque specs of the manufacturer. Over
torquing may cause enclosure breakage.
Electrician must provide a
dedicated 120 VAC circuit to power the relay
box.
Run a 14-3 cable to the 120 VAC terminal block. It is labeled with L and N
for Load and Neutral, respectively. There is a mechanical ground lug
located on the back of the box adjacent
to the terminal block. It is labeled
with the universal ground symbol. Terminations for the shielded cable
should be torqued to 35 pound-inches.
Electrician must supply a separate 24 VAC and 120 VAC circuit to the
common (C) side of
the upper and lower termination points of each relay
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