Basic Control

Sensible Equipment Company, Inc.

TRICOIL^® Air Conditioning Method
The Sensible Solution^TM

P.O. Box 669 Goldenrod, FL 32733 · tel: 407-296-8068 · fax: 407-296-7420 · email: kle@tricoil.com

BASIC TRICOIL^® CONTROL STRATEGIES

USA patent numbers 5,181,552; 5,228,302; 5,337,577. Other USA and foreign patents pending.

Simple Control: Without Reheat Coil By-pass Valve

Cooling Mode:	First Step of Cooling: Operate TRICOIL^®pump and modulate chilled water valve (or cycle stages of DX cooling) to maintain room temperature.
	Second Step Cooling: Stop pump. Latent Capacity is transferred to sensible.
Heating Mode:	Operate pump. Modulate heating hot water valve to maintain room temperature.
Dehumidification Mode:	Operate pump and operate cooling at 100% of cooling capacity (first step). Modulate the heating hot water valve to maintain the desired room temperature.

Advanced Control: Modulating Control of the Reheat Coil Bypass Valve

Cooling Mode:	First Step is identical to simple mode.
	Second Step of Cooling: Modulate reheat coil by-pass valve to maintain the room air temperature.
Heating Mode:	Operate pump. Position reheat coil by-pass to the by-pass position. Modulate heating hot water valve to maintain room temperature. The reheat coil by-pass valve can be positioned for full by-pass so that only the precooling coil is used for the heating and/or freeze protection duty.
Dehumidification Mode:	Operate pump and operate cooling at 100% of cooling capacity (first step). Position reheat coil by-pass valve for 100% flow through the reheat coil. Modulate the heating hot water valve to maintain the desired room temperature.

Additional reset schedules and energy management techniques can be used.