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Twin-Cel

About Twin-Cel Products

 

System Controls

 

Twin-Cel System Controls are broken up into two different modes of operation: "Summer" and "Winter". Depending on the equipment location, one or both variations could be used. Below is a chart indicating where summer and winter modes typically occur in climates where applicable. Further information can be found in our Twin-Cel manual found in the Twin-Cel Literature Section.

 Twin-CelSystemControls01

Control Components

Control components for a typical Twin-Cel system are described in the below figure. Further information can be found in our Twin-Cel manual found in the Twin-Cel Literature Section.

 

BT 1&2 Bubbler Tube - Used in conjunction with the LCP/ECP to pneumatically sense solution level
FM Flow Meter- Measures and controls the transfer of concentrated solution from the regenerator to the conditioner
HT Enthalpy Transmitter- Provides  temperature &  humidity signals to the PLC in LCP/ECP 1 for summer/winter mode operation
KV2 Solution Return Valve- Regulates the amount of energy transfer during the Null Cycle
KV3 Turn-down Set-point Valve- During off peak operation this valve is used to regulate energy transfer
LCP/ECP 1 Level & Electrical Control Panel 1 (PLC) - Provides:- High level, low level alarms- Modulating control of V6 based on TT leaving air set-point (Winter Mode)   - Switches between summer and winter mode based on signal from HT   - Modulates KV2 & KV3 during Null Cycle   - Motor starters & contactors
TT Temperature Transmitter - Senses leaving air temperature and transmits the signal to the PLC in LCP/ECP1 for V6 modulation control to maintain set-point
V5 Water Make-Up Valve- Receives a on/off signal from the PLC in ECP/LCP 2 based on BT 2 low level set-point
V6 Heater Valve- Receives a modulating signal from the PLC in ECP/LCP 1 to maintain TT set-point in winter operation
LCP/ECP 2 Level & Electrical Control Panel 2 - Provides:- High level, low level alarms- Modulating control of V5 based on BT2 level sensing in winter mode - Motor starters & contactors

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