Ingersoll-Rand ReliaTel, Manual, Page: 11 / 176

RT-SVD03L-EN 11
The RTOM gets power from and communicates with
the RTRM.
Any of these optional ReliaTel ™ devices require the
use of an RTOM:
• Condensate overflow switch (COS)
• Clogged filter switch (CFS)
• Discharge air sensor (DAS) used for supply air
tempering and ICS input data
• Fan failure switch (FFS)
• Factory-installed smoke detector
N No otte e:: A factory-installed smoke detector provides
instant shutdown and ICS alarm output.
• Frostat ™ (FOS)
ReliaTel ™ ™ Ventilation Module (RTVM) —
27.5 to 50 Tons Units
The RTVM is a module required for units configured
with space pressure control with Statitrac
™ . The
module controls the exhaust damper position 0-10Vdc
output as well as the space pressure sensor calibration
routine. The module accepts the following inputs:
• Statitrac ™ configuration
• Space pressure input
• Space pressure setpoint
• Space pressure setpoint deadband
• Traq ™ (Voyager ™ Commercial 27.5 to 50 tons)
ReliaTel ™ ™ Ventilation Module (RTVM) —
3 to 25 Tons Units
The RTVM is a module for Demand Control Ventilation
(DCV) on multi-speed and Single-Zone Variable Air
Volume (SZVAV) units.
ReliaTel ™ ™ Dehumidification Module
(RTDM)
N No otte e:: Available on 27.5 to 50 Tons units only.
The RTDM is a module required for units configured
with modulating dehumidification. The module
controls modulating cooling and reheat valves as well
as the reheat circuit pumpout solenoid. The module
accepts the following inputs:
• Reheat circuit entering evaporator temperature
• Reheat circuit low pressure cutout input
Economizer Actuator with Module (ECA
or RTEM)
The economizer can be used with or without the
options module. The actuator has a detachable
communicating module, which can be replaced
separately. The outdoor air sensor, connected to the
RTRM, provides outdoor temperature information for
the changeover decision.
The ECA accepts the following inputs:
• Mixed air sensor (MAS)
• Return air sensor (RAS) for comparative enthalpy or
ICS input data
• Outdoor humidity sensor (OHS) for reference or
comparative enthalpy
• Return air humidity sensor (RHS) for comparative
enthalpy
• CO
2
sensor 0-10 VDC input (DCV)
• Remote minimum potentiometer (RMP)
• Active/passive DCV configuration input (RTEM only)
• The power exhaust relay is connected to the ECA
module
ReliaTel ™ ™ Electromechanical
Economizer Module (RTEM-EM)
• The RTEM-EM is an economizer module configured
to support electro-mechanical HVAC units. The
module will require 24Vac input power and provide
control for an outdoor air damper actuator. The
module features 6 pots on for potentiometers
onboard. The potentiometers control building
design and demand control ventilation (DCV)
minimum damper positions, DCV and CO
2
setpoints and limits, and dry bulb and enthalpy
settings. The module supports the following inputs:
• Return air temperature sensor (RAS)
• Outside air temperature sensor (OAS)
• Mixed air temperature sensor (MAS)
• Return air humidity sensor (RHS) for comparative
enthalpy
• Outside air humidity sensor (OHS) for comparative
enthalpy
• CO
2
sensor 0-12VDC input (DCV)
• Remote minimum position potentiometer
Variable Speed Module (VSM)
• The VSM allows communication between
ReliaTel
™
controls platform and a variable speed
condenser fan (ECM) motor and variable speed
compressor drive for Precedent
™ and Voyager ™
light commercial products. The VSM controller is
applied to the following units:
• Precedent ™ 3 to 5 ton units to control a variable
speed condenser fan and variable speed
compressor drive
• Voyager ™ light commercial 12.5 and 17.5 ton units
to control a variable speed condenser fan and
variable speed compressor drive
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