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NESS - M1 Installation and Programming Manual
Page 54
THERMOSTATS -
HVAC Thermostats may be read and/or controlled by the M1 and its automation rules engine. This menu
allows each thermostat to be assigned a 12 character description for easy reference in an automation rule. The M1 is
currently compatible with the following communicating thermostats: RCS, Aprilaire, and HAI. Due to the various data
protocols, a Lighting/Thermostat/Serial Interface Expander (M1XSP- ness part # 101-214) is needed to couple the M1 data
bus to HVAC thermostats. Depending on the brand of thermostat, its wiring interface (RS-232 or RS-485), and the model of
M1 that you are installing, up to 16 HVAC thermostats can be controlled. Many communicating thermostats operate stand-
alone when they are not being remotely commanded by an automation controller.
TEXTS -
This section allows custom text messages to be constructed and formatted. These messages can be transmitted to
an LCD keypad or out of one of the RS232 serial ports to a PC or some other type of equipment. I.E. Touchscreen, Lighting
centers, etc. A message to the keypad could be “Happy Birthday” or “Please Pay Your Bill”, while a message going out a serial
port might be a series of ASCII characters formatted to a certain manufacturers protocol. Special options built into this menu
include: automatic display of temperature readings from Zone Temperature Sensors (Ness-M1ZTS part #101-229 & 101-230)
and from the temperature sensor built into an LCD Keypad. The sending or receiving of text messages is controlled by the
automation rules engine.
NOTE: Text messages share the same memory space as rules. The total number of text
messages and rules is limited by the M1 model that you are installing.
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