Marvair MAR7000 Thermostat-Controller

The MAR7000 is a controller and sensors in a single, attractive package that creates a flexible solution to stand-alone control challenges or BACnet network challenges.

General Description

Temperature, humidity, and motion sensing are standard. Flexible input and output configurations
and built-in programming ensure that a variety of application needs can be met:

  • Heat pump unit, with up to two compressor stages, and with optional auxiliary heat, emergency heat, dehumidification, and/or
    fan status
  • A/C, with up to two H/C stages, and with optional economizer, dehumidification, and/or fan status


Interface and Function

  • User-friendly English-language menus (no obscure numeric codes) on a 64 x 128 pixel, dot-matrix LCD display with 5 buttons for data selection and entry
  • Built-in, factory-tested libraries of configurable application control sequences
  • Integral energy management control with deadband heating and cooling setpoints and other advanced features
  • Schedules can easily be set uniquely by entire week (Mon.–Sun.), weekdays (Mon.–Fri.), weekend (Sat.–Sun.), individual days, and/or holidays—or “learned” automatically via motion sensing
  • Six On/Off and independent heating and cooling setpoint periods are available per day
  • Three levels of password-protected access (user/operator/administrator) prevent disruption of operation and configuration
  • Integral temperature, humidity, motion, and CO2 sensor options
  • A 72-hour power (capacitor) backup and a real-time clock for network time synchronization or full stand-alone operation

BACnet Standards

  • Meets or exceeds BACnet AAC specifications in the ANSI/ASHRAE BACnet Standard 135-2008

Inputs and Outputs

  • Three or six analog inputs for use with external devices such as mixed air temperature, fan status, outside air, and remote CO2
  • Analog inputs accept industry-standard 10K ohm thermistor sensors or dry contacts
  • Inputs can be configured via a switch for 10K ohm pull-up resistors (for unpowered contacts or devices) or 0–12 VDC
  • Input overvoltage protection (24 VAC, continuous)
  • 12-bit analog-to-digital conversion on inputs
  • Seven NO, SPST (Form “A”) relays carry 1 A max. per relay or 1.5 A per bank of 3 relays (relays 1–3 and 4–6) @ 24 VAC/VDC


  • Screw terminal blocks, wire size 14–22 AWG, for inputs, outputs, power, and BACnet network
  • Integral peer-to-peer BACnet MS/TP LAN network communications on all devices (with configurable baud rate from 9600 to 76.8K baud)
  • A four-pin EIA-485 data port on the underside of the case enables easy temporary computer connection to the BACnet network
  • “E” versions add an RJ-45 jack

For detailed specifications, performance, and efficiency information, download the Product Data Sheet from the document list on this page.