Features Of The Transmitting And Receiving Module (Trm) - Bosch TSTBT4H2CP-M--A Owner's Manual

Transmitting and receiving module

feaTures of The TransmiTTinG and reCeivinG module (Trm)

Features, Receiving Module
Optional Return Air Temperature Sensor
If communication is lost between the Receiving
Module and Thermostat for 10 minutes, the sensor
is used to control the space temperature.
Modbus Thermostat Communication
A 4-wire thermostat cable between the Receiving
Module and the Thermostat provides Modbus
communication using RS485.
Optional Temperature Sensors
TS1 and TS2 can be used to monitor dis-charge air temperature,
outdoor temperature or can be used as remote space temperature
sensors. See Installer options 13 and 14.
Revised 06-13
Caution
HVAC Status
Red if heating call, blinks during second stage heating call.
Yellow if cooling call, blinks during second stage cooling call.
Green if fan call.
Relay
Subject to change without prior notice
TSTBT4H2CP SERIES
Mercury Notice: All Bosch thermostats are
mercury free. However, if the product you are
replacing contains mercury, dispose of it properly.
Your local waste management authority can give
you instructions on recycling.
Communication Status
Blinks green during Modbus communication
with thermostat and turns red if communication with
thermostat fails 10 times.
Relay
Relay
Relay
Relay
Relay
Relay
Relay
Equipment Monitor
The PDU terminal is used to monitor
Bosch equipment and indicate any
alert messages at the Thermostat.
These terminals are used to
HVAC Control
Terminals can be configured for
conventional or dual fuel heat
pumps or gas/electric systems.
Humidifier Control
control a humidifier.
De-Humidication Control
The HUM terminal can be used to
control de-humidification using the
cooling or hot gas reheat.
6 720 220 380
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