Installation
SS-SVX002B-EN
23
1. Remove the cover from the base of the sensor by
squeezing it at the top and bottom.
NOTICE
Sensor Damage!
Take care not to damage the exposed temperature/
humidity sensors on the PC board when the cover is
removed. The sensors can be damaged if handled
improperly.
2. Place the base temporarily against the mounting
surface.
3. Level the base. Mark and drill mounting holes through
at least two of the available slotted holes. Also, mark
through the large opening in the base and drill a hole
into the mounting surface for a control cable to pass
through the back of the base.
4. Run a 3 conductor shielded cable through the opening
in the base, then secure the base with screws ensuring
the word TOP on the PC board is oriented upward.
5. Make the wiring connections. Refer to Section
2.8,Utility Connections and refer to the wiring diagram
supplied with your unit.
6. Seal the hole in the wall behind the sensor.
7. Replace the cover plate on the base.
Remote Water Detector
The remote water detector is normally placed on the sub-
floor or in a field supplied auxiliary drain pan located
beneath the unit. 2 types of water detectors are available:
Spot type water detector-
Remove the protective cover and connect two control
wires to the terminals on the base. Run the control wires
into the electric box and connect them to the control
terminal block as shown in the wiring diagram provided
with your unit. Replace the cover and place the water
detector(s) on the floor with the metal electrodes facing
down. When water is present, current will flow between
the electrodes. The base is provided with a mounting hole
in the center which may be used to secure the water
detector in place.
Note:
Do not place the spot type water detector on an
electrically conductive surface.
Cable type water detector-
Lay the cable water detector flat across the sub-floor
where water could collect (see
). Secure the
cable every 12-18 inches with J-clips or cable ties with
adhesive mounting pads when installing it in the
airstream. When routing it around obstructions, secure it
at each turn of the cable. Do not tie the water detector cable
to the metal floor stand or to metal pipes.
When a water leak on the floor reaches the cable, current
will flow between the cable wires. A two conductor wire
harness is provided with a quick connect fitting on the end.
The harness mates to the fitting on the water detector and
connects it to the control terminal block inside the electric
box (see
) as shown in the wiring diagram
provided with your unit.
Piping Connections
Field piping connections for the system (refrigerant, water,
water/glycol and optional hot water reheat piping) are
sweat connections. TR-CFD (down-flow) units typically
have pilot holes available for the routing piping and wiring
through the floor of the cabinet. The piping connections
are inside the cabinet. The installation drawing (furnished
with your unit) shows the recommended entry location.
TR-CFU (up-flow) units are typically provided with pipe
connections stubbed out at the top of the cabinet. When
considering how to route the piping and wiring for TR-CFU
units furnished without top piping, entry holes may be
drilled through either the floor of the cabinet or through a
