Mounting The Controller - Xylem Aquavar SPD SPD20050 Instruction Manual

PIPING
Section 4
(continued)
The pressure sensor cable is prewired to the controller. The cable can be shortened for a cleaner installation.
Longer cable lengths are available, consult factory. Maximum recommended pressure sensor cable length is
300ft. Avoid leaving a coil of pressure sensor cable as this can induce unwanted transient voltages and noise into
the system. Do not run the pressure sensor cable alongside the input or output wiring. Maintain a distance of at
least 8" between the pressure sensor cable and input or output wiring.
Ensure the pressure sensor cable is connected as follows: Brown to terminal 7 (24VDC SUPPLY), White to
terminal 6 (TRANSDUCER INPUT), Drain to chassis. Connecting the Drain wire to the chassis electrically
connects the sensor case to the chassis of the controller. In some cases this drain wire must be disconnected
from the controller chassis. In cases where the there is grounded metal piping which is continuous between the
transducer and the motor or the transducer is installed in grounded metal piping, a ground loop can result so
the drain wire must be disconnected from the chassis. In cases where there are sections of nonmetallic piping
between the transducer and motor or the transducer is installed in ungrounded piping this drain wire should be
connected to the controller chassis.

MOUNTING THE CONTROLLER

Section 5
General
Mount the controller in a well ventilated, shaded area using 4 screws. The controller must be mounted vertically.
Be sure to leave 8 inches of free air space on every side of the unit. The controller must be in an area with an
ambient between -22º F and 122º F. If installation is above 3300 feet above sea level, ambient temperatures
are derated 1% per 330 feet above 3300 feet.
6500 ft.
NOTE
Do not block the heat sink (fins) or fans and do not set anything on the units.
WARNING
The controller access cover should always be securely fastened to the control box due to the
WARNING
dangerous voltage/shock hazard inside the unit. A lock can be used to prevent unwanted entry.
Hazardous
voltage
Page 8
The altitude limit for this controller is 6500 ft. Do not install above