Trane Voyager RT-SVX17C-EN, Installation Operation & Maintenance

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The actuator stroke time is 30 seconds and is capable of
delivering up to 150 inch pounds of torque and is powered
by 24 VAC.
Conventional Thermostat Connections (Standard with
CV)
This feature allows conventional thermostats to be used in
conjunction with the RTRM on Constant Volume Applica-
tions only. It utilizes the conventional wiring scheme of R,
Y1, Y2, W1, W2/X, and G. Refer to Figure 9-1 for conven-
tional thermostat connections. Applicable thermostats to be
used with the conventional thermostat inputs are:
Vendor Part # Trane Part #
Honeywell T7300
Honeywell T874D1082 BAYSTAT011
Enerstat MS-1N BAYSTAT003
TCI - Trane Communication Interface (Optional)
This module is used when the application calls for an ICS
building management type control system. It allows the con-
trol and monitoring of the system through a Trane Tracer
TM
panel. The module can be ordered from the factory or or-
dered as a kit to be field installed. Follow the installation in-
structions that ship with each kit when field installation is
necessary.
LCI - LonTalk® Communication Interface (Optional)
This module is used when the application calls for a
LonTalk building management type control system. It allows
the control and monitoring of the system through a Trane
Tracer Summitt panel or 3rd party LonTalk system. The mod-
ule can be ordered from the factory or ordered as a kit to be
field installed. Follow the installation instructions that ship
with each kit when field installation is necessary.
System Operation
Economizer Operation with a Conventional Thermostat
If the ambient conditions are suitable for economizer opera-
tion, the economizer is activated as the 1st step of cooling
from Y1. The dampers are controlled to provide a supply air
temperature of 50
o
F +/- 5
o
F. If the economizer is disabled
due to ambient conditions, the 1st stage of mechanical cool-
ing is activated.
While economizing, if an additional stage of cooling is acti-
vated from Y2, the 1st stage of mechanical cooling is acti-
vated. If the economizer is disabled due to ambient condi-
tions, the 2nd stage of mechanical cooling is activated.
The supply fan is activated from the G terminal and will
cycle with a call for heat or cooling if in the "Auto" mode. It
will run continuously in the "On" mode regardless of any
other system demand.
On gas heat units, first and second stages are activated by
the W1 and W2 terminals on the CTI. On electric heat units,
only two stages of heat are available. If the W2 terminal is
activated without activating the W1 terminal, the RTRM will
bring on both stages of electric heat.
The Conventional Thermostat connections can also be uti-
lized as a generic building automation system interface for
constant volume ICS applications. Due to the limited heat-
ing and cooling steps when using a conventional thermo-
stat, compressor staging will vary on units with three com-
pressors.
Unit Control Modules
RTRM - ReliaTel Refrigeration Module
The RTRM is the main information receiving module. It inter-
prets the information received from all other unit modules,
sensors, remote panels, customer binary contacts and re-
sponds by activating the various unit components to satisfy
the applicable request for economizing, cooling, heating,
exhaust, ventilation.
The RTRM configuration is set through the wire harness to
function within one of four system applications:
1. Constant Volume Supply Air with No Heat
2. Constant Volume Supply Air with Gas or Electric
Heat.
3. Variable Supply Air Volume with No Heat.
4. Variable Supply Air Volume with Gas or Electric Heat.
ECA - Economizer Actuator (Optional)
The ECA monitors the mixed air temperature, return air tem-
perature, minimum position setpoint (local or remote), ambi-
ent dry bulb/enthalpy sensor or comparative humidity (re-
turn air humidity against ambient humidity) sensors, if se-
lected, to control the dampers to an accuracy of +/- 5% of
the stroke. The actuator is spring returned to the closed po-
sition any time power is lost to the unit. It is capable of deliv-
ering up to 25 inch pounds of torque and is powered by 24
VAC. Refer to "Cooling with an Economizer" for the proper
Potentiometer settings for dry bulb/Enthalpy control.
RTAM - ReliaTel Airhandler Module (Optional for CV -
Standard with VAV)
The RTAM receives information from the supply duct static
pressure transducer, supply air cooling setpoint potentiom-
eter, supply pressure setpoint potentiometer, static pressure
deadband potentiometer, morning warm-up setpoint poten-
tiometer, reset setpoint potentiometer, and the selectable re-
set input. (See figure 11-1)
The RTAM module provides a 2 to 10 VDC output to control
the IGV actuator or a Variable Frequency Drive device. DIP
switches located on the RTAM configures the unit to use the
output for IGV's or a VFD.
Switch 1 is "OFF" for IGV's and "ON" for VFD's.
Switch 2 is "OFF" for VAV, "ON" for VAV without IGV.
Switch 3 and 4 operation are explained under "supply air
temperature reset".
Switch 5 is "OFF" for DWU Disabled and "ON" for DWU En-
abled.
Figure 11-1