Installation, Operation and Maintenance Manual
Marvel Mini
19
Subject to change without notice.
120.9-IM (1218)
FIGURE 14 – OUTDOOR AIR TEMPERATURE / HUMIDITY SENSOR
Wiring
Using a minimum 18-20 AWG 300 volt rated two conductor
shielded cable with drain wire make the following electrical
connections. Use a minimum five conductor for temperature
and humidity control Refer to Figure 15 – Outdoor
Temperature/Humidity Sensor Wiring
1
The return air temperature sensor is non-polarity
observant
2
Connect from one NTC terminal inside the outdoor
temperature/humidity sensor to TB-OTHS – NTC
3
Connect the other NTC terminal inside the outdoor
temperature/humidity sensor to TB-OTHS – NTC
4
Connect the drain wire to ground at the unit’s electrical
control panel end only
5
Connect from the terminal marked G+ inside the
outdoor temperature/humidity sensor to terminal TB-
OTHS – G+ inside the unit’s electrical box
6
Connect from the terminal marked M inside the
outdoor temperature/humidity sensor to terminal TB-
OTHS – M inside the unit’s electrical control box
7
Connect from the terminal marked Hout inside the
outdoor temperature/humidity sensor to terminal TB-
OTHS – Hout inside the unit’s electrical control box
FIGURE 15 – OUTDOOR TEMPERATURE/HUMIDITY
SENSOR WIRING