Ingersoll-Rand ReliaTel, Manual, Page: 45 / 176

RT-SVD03L-EN 45
ReliaTel ™ ™ Ventilation Module (RTVM)
Figure 28. ReliaTel ™ ™ ventilation module (RTVM) - 3
to 50 Tons
The light commercial RTVM is used with 17 Plus,
multispeed evaporator fan and SZVAV units with
demand controlled ventilation (DCV/CO
2
).
• BAYRTVM001* KIT for Voyager ™ 12.5 to 25 tons
• BAYCO2K101* / ASYSTAT721* 17 Plus, multi-speed
and SZVAV Precedent
™ (wall mount)
• BAYCO2K103* / ASYSTAT721* 17 Plus, multi-speed
and SZVAV Precedent
™ (duct mount)
RTVM Location - 27.5 to 50 Tons
The RTVM is installed in the economizer section for
Voyager
™ Commercial units with Statitrac ™ .
Light Commercial RTVM Inputs
J1, J2 Inputs
J1 provides 24 VAC power and MODBUS
communication to the RTVM from the RTRM.
J2 provides 24 VAC power and MODBUS
communication from the RTVM to other optional circuit
boards.
RTVM Inputs
J1, J2 Inputs
J1 provides 24VAC power in to the board and MODBUS
communication to and from the RTRM.
J2 provides 24VAC power and MODBUS
communication downstream to the ECA.
J3 Inputs
J3 - 1, 2 inputs allow configuration for Statitrac ™
control. If closed, the unit is configured for Statitrac ™
control.
N No otte e:: Precedent ™ Eflex units with modulating gas heat
use the RTVM for additional hardware. The J3-1
and 4 inputs are closed to configure the RTVM
for mod gas usage.
J4 Inputs
J4 - 3, 4, 5 provide 5Vdc to the space pressure
transducer, an input for the space pressure signal to
the control board, and a common for the transducer.
N No otte e:: Precedent Eflex units with modulating gas heat
use the J4-3 input for an Airflow Monitoring
Transducer (AFT) for the heat exchanger.
J5 Output
J5 - 1, 2 provides a 2-10Vdc output signal and common
to the exhaust damper actuator.
J11 Output
J11 - 1, 2 provides a 23Vdc output and common for
space pressure transducer calibration. This output is
energized once every 60 seconds.
Setpoint Potentiometers
S Sp pa acce e P Prre essssu urre e S Se ettp po oiin ntt (R40) potentiometer
provides a space pressure setpoint for Statitrac ™
control. The range is -0.20iwc to 0.30iwc. Default is
0.08iwc.
S Sp pa acce e P Prre essssu urre e S Se ettp po oiin ntt D De ea ad db ba an nd d (R42)
potentiometer provides a selectable deadband for the
space pressure setpoint control. The range is 0.02iwc to
0.20iwc. Default is 0.04iwc.
For RTVM v3.0 and later, test point "hooks" are
included on the module next to each setpoint
potentiometer to allow a more accurate setup. Connect
a DC volt meter to the test point and ground to verify
the desired setpoint according to the tables below:
Table 13. RTVM space pressure setpoint
Voltage (Vdc) Setpoint (IWC)
0.04 -0.2
0.118 -0.19
0.196 -0.18
0.274 -0.17
0.352 -0.16
0.43 -0.15
0.508 -0.14
0.586 -0.13