Description
HE-FORN-6212 TEMP/CO2 DUCT SENSOR PRESET WITH ECONOMY CYCLE ONLY CONTROL OUTPUTS
NO SWITCHBOARD MOUNTING OF CONTROLS REQUIRED – LOCAL WIRING AT PACKAGE UNIT.
HE-FORN duct sensor preset for economy cycle free cooling control + CO2 control only, typically because the A/C unit comes complete with a room temperature /time switch control station (so called pendent) but not also capable of controlling economy cycle & CO2 operation, adding this to the system adds those functions. Economy cycle is modulated to the fresh air mode if the return air temperature is above the FORNS setpoint (ie 23c) and the outside air temperature is measured to be below the 7k1 hi-limit thermostat setting (ie 23c), Plus based on the FORNs CO2 measurement, if the CO2 level is above the pre-set CO2 setpoint ..ie 600ppm, the economy cycle dampers will also modulate open to fresh mode to lower the CO2 levels regardless of temperatures.. All settings are site adjustable.the output 0-10v signal can be set with minimum & maximum output settings. the FORN also has two relays not used in this application but can be set to alao trigger on temperature or CO2 levels.
1 X 7K1 OUTDOOR TEMP. HI-LIMIT THERMOSTAT
1 X HE-FORN-6212-51 RETURN AIR DUCT TEMP. + CO2 SENSOR
We’d greatly appreciate if you also purchased the damper motors from us as part of the controls package, we are authorised distributers for Siemens controls and can offer the following choices of damper motors to suit damper size etc at very competitive costs.
3 x GDB161.1E 5NM (rated at 0.8M SQ M) Modulating damper motors ADD $463.65 + gst (for 3 motors)
or 3 X GLB161.1E 10NM (rated at 1.5M SQ M) Modulating damper motors ADD $589 + gst (for 3 motors)
or 3 x GPC161.1A 4NM (rated at 0.6 SQ M) Modulating damper motor c/w spring return ADD $724.35 + gst (if fire mode open or close position required on power loss)
or 3 x GMA161.1E 7NM (rated at 1.5 SQ M) Modulating damper motor c/w spring return ADD $826.65 + gst (if fire mode open or close position required on power loss)
RING OUR OFFICE ON 03 95627888 TO MANUALLY PLACE ORDER FOR CHANGES TO DEFAULT BASIC OFFERING.
