Startup; Unit Control Modules; Module; Eca/Rtem - Economizer Actuator - Trane Voyager Commercial Installation, Operation And Maintenance Manual

Startup

Unit Control Modules

RTRM - ReliaTel™ ™ Refrigeration Module
The RTRM is the main information receiving module. It
interprets the information received from all other unit
modules, sensors, remote panels, customer binary
contacts and responds 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 six system
applications:
• Constant Volume Supply Air with No Heat.
• Constant Volume Supply Air with Gas or Electric
Heat.
• Variable Supply Air Volume with No Heat.
• Variable Supply Air Volume with Gas or Electric
Heat.
• Single Zone Variable Supply Air Volume with No
Heat.
• Single Zone Variable Supply Air Volume with Gas
or Electric Heat.

ECA/RTEM - Economizer Actuator/

ReliaTel Economizer Module (Optional)
The ECA/RTEM monitors the mixed air temperature,
return air temperature, minimum position setpoint
(local or remote), ambient dry bulb/enthalpy sensor or
comparative humidity (return air humidity against
ambient humidity) sensors, if selected, to control the
dampers to an accuracy of +/- 5% of the stroke. The
actuator is spring returned (FA closed, RA opened) any
time power is lost to the unit. Refer to
Cooling with an Economizer ," p. 59
potentiometer settings for dry bulb/Enthalpy control.
N N o o t t e e : : The ECA/RTEM control module is mounted on
the actuator. Units with the ultra-low-leak
economizer option have their ECA control
module mounted to a panel adjacent to the RA
damper.
EBA - Exhaust Blade Actuator (Optional)
If the unit is ordered with tracking power exhaust, the
EBA will track the economizer damper position as long
as the active exhaust fan setpoint has been exceeded -
set via RTOM, through BAS, or calculated (SZ VAV
only). The actuator limits the maximum travel of the
exhaust barometric damper. The exhaust blade
actuator is spring returned and is closed any time
power is lost to the unit.
42
"Mechanical
for the proper

RTAM - ReliaTel Air Handler Module

(Standard with Traditional VAV)

The RTAM receives information from the supply duct
static pressure transducer. Attached to the module are
the supply air heating potentiometer, supply air cooling
setpoint potentiometer, supply pressure setpoint
potentiometer, static pressure deadband
potentiometer, morning warm-up setpoint
potentiometer, reset setpoint potentiometer, and 5 DIP
switches. See following figure.
Figure 36. RTAM module
DIP Switches:
• Switch 1 is "ON" for VFD's.
• Switch 2 is "OFF" for VAV.
• Switch 3 and 4 operation are explained under
"supply air temperature reset".
• Switch 5 is "OFF" for DWU Disabled and "ON" for
DWU Enabled.
The RTAM module provides a 0 to 10 Vdc output to
control the Variable Frequency Drive. DIP switches
located on the RTAM configures the unit to use the
output for a VFD. Customer changeover input from
Low Voltage Terminal Board (LTB5) activates VAV
heating. The Supply Air Heating setpoint must be set to
the desired discharge air temperature for heating. This
VAV heating mode is available only with modulating
gas heat units. In this mode the gas heaters modulate
RT-SVX34R-EN