T2798I2000 Honeywell AHU Room Thermostat

Description

T2798I2000 Honeywell AHU Room Thermostat

T2798I2000 AHU Room Thermostat standalone micro-controller based LCD temperature controller provides proportional plus integral (P+I) and on/off temperature control for commercial Heating, Ventilating & Air Conditioning System such as Hydronic Heating, Air Handling Unit, Heat Exchanger or Condensing Tower. Honeywell T2798I2000 AHU Thermostat controller has a modulating analog 2 to 10Vdc or 4 to 20mA output and a 2A on/off output to realize various optional control functions including cool/heat changeover, heat/cool sequence control, emergency interlocking and auto-alarming control.

Features

1. PI (proportional plus integral) control action provides accurate, stable and comfortable temperature control.
2. Compatible with series 70 direct-coupled damper / valve actuator like ML7161, ML7174, ML7420 / ML7421series ML7425, ML7984 series, N20010, S10010, M7410E series, CN7505, CN7510 / CN72 series CN7220 & CN7234 also VC79 series etc.
3. Backlit LCD to display both setting and measured value.
4. Adjustable Zero Energy Band, On/Off Differential, Proportional Band and Temperature Offset.
5. You can manually force the analog output to be convenient for installation and commissioning.
6. Optional 2 to 10Vdc or 4 to 20mA direct acting and reverse acting analog output.
7. Selectable internal and external temperature sensor.
8. Wide temperature control range (-20 to 110 °C by using external temperature sensor) is suitable for extreme temperature control such as steam and ice water.
9. Watch Dog Timer: to resume the controller from hanging condition.
10. Brownout effect to avoid malfunctioning and care on power ON and power OFF.
11. Pluggable terminal block allows pre-wiring outside of the controller.
12. Compact size and slim design provide elegant and attractive modern style appearance.

INSTALLATION

The controller can be installed in any position on a flat surface using electrical box [Type-3 Module]. For measuring room temperature using an internal sensor and selecting a wall mounting method, we recommend installing it at a height of 1.5m (about 5 ft.) above the floor in an area with average temperature conditions. Irrespective of the mounting method utilized, it is imperative that you install the product in a location with adequate air circulation.

Do not install the controller where it may be affected by:

1. Draughts or dead air spots behind doors and in corners.
2. Hot or cold air from ducts.
3. Radiant heat from sun or appliances.
4. Concealed pipes and chimneys