Reliatel Ventilation Module; (Rtvm) - Trane Voyager Commercial Installation, Operation And Maintenance Manual

and the supply air pressure control remains active to
satisfy the zone settings.
For constant volume (CV) units with modulating gas
heat using a conventional thermostat or for Single
Zone VAV units with modulating gas heat, the
Discharge Air SP on the RTOM must be set to desired
discharge air temperature in order for the unit to
function properly. For VAV units with modulating gas
heat, the Supply Air Heating Setpoint on the RTAM is
used to control the heat setpoint in the changeover
heating mode.
Figure 37. RTOM module
J8
R42 R40
1-
R136
TP2
TP3
DA HEAT EXH
FAN
DA COOL/FAN SPD
-1
J5
1 = Discharge Air Heat Setpoint**
2 = Exhaust Fan Enable Setpoint
3 = Supply Air Reheat Setpoint
4 = Dehumidi cation (%) Setpoint
5 = Discharge Air Cool Setpoint LL***
**Discharge Air Heat Setpoint is required for Single Zone
VAV units with modulating heat or traditional
Constant Volume units with modulating heat and a
conventional thermostat control.
***Discharge Air Cool Setpoint is required for Single
Zone VAV operation.
RT-SVX34R-EN
J4 J9 J10 J11
1- 1 1 1
1-
J12
1-
J3
R41
R130
TP4
TP5
SA REHEAT
DEHUMID
R46
1-
J6
-1
J7
ReliaTel Ventilation Module (RTVM)
Figure 38. RTVM module
SPC PRESS DB SPC PRESS
J4
R42 R40
1-
R136 TP2
TP3
DA COOL/FAN SPD
-1
J5
1 = Space Pressure Deadband (iwc)
2 = Space Pressure Setpoint (iwc)
3* = R130 = Design minimum OA ow Setpoint
4* = R41 =DCV Minimum OA ow Setpoint
3** = R130 (SA REHEAT SP) = Design
Minimum Position at Minimum Fan
Speed Command
4** = R41 (DEHUMID) = DCV Minimum
Position at Minimum Fan Speed
Command
5** = R136 (DA COOL/FAN SPD) = Design
Minimum Position at 50% Fan Speed
Command
* Setpoints for units with TRAQ
** Setpoints only required for Single Zone VAV units with Demand
Controlled Ventilation installed.
The RTVM (Ventilation Module) provides a 2 to 10 Vdc
signal to control the Exhaust Blade Actuator in order to
relieve positive building pressure. The signal output
will be modulated based on the measured values from
the Space Pressure Transducer. The Space Pressure
Calibration Solenoid will ensure that the RTVM reads a
differential pressure between the building pressure and
atmospheric pressure. The Space Pressure Setpoint
and Space Pressure Deadband are set by adjusting
potentiometers located on the RTVM. Also, units
configured for Single Zone VAV control with Demand
Controlled ventilation will require an RTVM for the
additional, required Outside Air damper minimum
position setpoint potentiometers.
Units configured with the Fresh Air Measurement
(Traq) option will require a RTVM for required sensors
and setpoints to perform Traq airflow control. The
Airflow Sensor input, Minimum Outside Air CFM
Setpoints (Design and DCV), and Outside Airflow
Adjustment Setpoint are all provided by the RTVM. The
RTVM takes the airflow sensor voltage, converts it to
airflow (CFM) and calculates a Traq outside air
minimum OA damper position to maintain the desired
S S t t a a r r t t u u p p
J9 J11
1 1
1-
J12
1-
J3
R41
R130
TP4
TP5
SA REHEAT
DEHUMID
R46
43