RT-SVX24Q-EN
81
Table 42.
DC conductors (continued)
Distance from Unit to
Control
Recommended Wire
Size
386- 610 feet
16 gauge
611- 970 feet
14 gauge
3. Do not run the electrical wires transporting DC
signals in or around conduit housing high voltage
wires. Units equipped with a BACnet®
Communication Interface (BCI) or LonTalk®
communication Interface (LCI) option which utilizes
a serial communication link must:
•
be 18 AWG shielded twisted pair cable (Belden 8760
or equivalent).
•
not exceed 5,000 feet maximum for each link.
•
not pass between buildings.
Constant Volume System Controls
Remote Panel w/o NSB (BAYSENS110*)
This electronic sensor features four system switch
settings (Heat, Cool, Auto, and Off) and two fan settings
(On and Auto) with four system status LED's. It is a
manual or automatic changeover control with dual
setpoint capability. It can be used with a remote zone
sensor BAYSENS077*. Refer to
for the
Temperature vs. Resistance coefficient.
Constant Volume Zone Panel
(BAYSENS108*)
This electronic sensor features four system switch
settings (Heat, Cool, Auto, and Off) and two fan settings
(On and Auto). It is a manual or automatic changeover
control with dual setpoint capability.
Variable Air Volume System Controls
VAV Changeover Contacts
The changeover input is used with modulating gas
heat, electric heat, or hydronic heat. When the contacts
are closed, the unit will control to the discharge heating
setpoint. Refer to the unit wiring diagram for the field
connection terminals in the unit control panel. The
switch must be rated at 12 ma @ 24 VDC minimum.
Constant Volume or Variable Air Volume
System Controls
Remote Human Interface Module
The remote Human Interface module enables the
operator to set or modify the operating parameters of
the unit using a 16 key keypad and to view the
operating status of the unit on the 2 line, 40 character
LCD screen without leaving the building. However, the
Remote Human Interface module cannot be used to
perform any service functions.
One remote panel is designed to monitor and control
up to four units providing each of the units are
equipped with an IPCB module. Use the installation
instructions that shipped with the module to install it,
and the appropriate illustrations beginning with
to connect it to the unit.
Remote Panel w/ NSB (BAYSENS119*)
This 7 day programmable sensor features four periods
for Occupied\Unoccupied programming per day. Either
one or all four periods can be programmed. If the
power is interrupted, the program is retained in
permanent memory. If power is off longer than 2 hours,
only the clock and day may have to be reset.
The front panel allows selection of Occupied/
Unoccupied periods with two temperature inputs
(Cooling Supply Air Temperature and Heating Warm-
up temperature) per occupied period. The occupied
cooling setpoint ranges between 40 and 80°F. The
warm-up setpoint ranges between 50 and 90°F with a 2
degree deadband. The Unoccupied cooling setpoint
ranges between 45 and 98°F. The heating setpoint
ranges between 43 and 96°F.
The liquid crystal display (LCD) displays zone
temperature, temperature setpoints, week day, time,
and operational mode symbols. The DIP switches on
the subbase are used to enable or disable applicable
functions, i.e.; Morning warm-up, economizer
minimum position override during unoccupied status,
heat installed, remote zone temperature sensor, 12/24
hour time display, and daytime warm-up.
Refer to
for the Temperature vs.
Resistance coefficient. During an occupied period, an
auxiliary relay rated for 1.25 amps @ 30 volts AC with
one set of single pole double throw contacts is
activated.
Remote Zone Sensor (BAYSENS073*)
This electronic analog sensor features remote zone
sensing and timed override with override cancellation.
It is used when the RTM has been programmed as the
source for zone temperature control. Refer to
for the Temperature vs. Resistance coefficient.
Remote Zone Sensor (BAYSENS074*)
This electronic analog sensor features single setpoint
capability and timed override with override
cancellation. It is used with a Trane Integrated
Comfort™ system. Refer to
for the
Temperature vs. Resistance coefficient.
Remote Zone Sensor (BAYSENS016*)
This bullet type analog Temperature sensor can be
used for outside air (ambient) sensing, return air
temperature sensing, supply air temperature sensing,
remote temperature sensing (uncovered), morning
warm-up temperature sensing, and for VAV zone reset.
Wiring procedures vary according to the particular
application and equipment involved. When this sensor
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