Orion-system VCM Manual de usuario descargar pdf (Pagina 25)

Operator Interfaces

Technical Guide

Setpoint Screen #8

VCM Spts ID 59

Cutoff Temperature

Lo SAT: 40°F

Hi SAT: 150°F

The VCM controller will temporarily disable Heating or Cooling if while

in Heating or Cooling Mode the Supply Air Temperature rises above

the Hi SAT Cutoff Temperature Setpoint or falls below the Lo SAT

Cutoff Temperature Setpoint. See the VCM Controller Technical Guide

for detailed information on the Lo and Hi Supply Air Temperature

Cutoff sequence of operation.

Description Minimum Default Maximum

Lo SAT Cutoff

F40

F250

Hi SAT Cutoff

0°

F 170°

F250°

Setpoint Screen #9

VCM Spts ID 5

Minimum Supply

Fan VFD Speed

For Heating: 50%

If the Supply Fan VFD Signal falls below the Minimum Supply Fan

VFD Speed For Heating Setpoint, Heating will be disabled.

Description Minimum Default Maximum

Min Supply Fan VFD

Speed For Heating

50% 100%

Setpoint Screen #6

VCM Spts ID 59

Stage Control Window

Cooling...: 5°F

Heating...: 5°F

When the VCM controller is in Cooling Mode, if the Supply Air Tem-

perature drops below the Active Supply Air Temperature Setpoint mi-

nus the Cooling Stage Control Window value, a Cooling Stage will be

deactivated after its Minimum Run Time. In the Heating Mode, if the

Supply Air Temperature rises above the Active Supply Air Tempera-

ture Setpoint plus the Heating Stage Control Window value, a Heating

stage will be deactivated after its Minimum Run Time.

Description Minimum Default Maximum

Stage Control Window

Cooling

1°

F5°

F20°

Stage Control Window

Heating

1°

F5°

F20°

Setpoint Screen #7

VCM Spts ID 59

Outdoor Air Lockouts

Cooling...: 50°F

Heating...: 75°F

The VCM will Lockout Mechanical Heating or Cooling when the Out-

door Air Temperature is above or below these Setpoints.

Description Minimum Default Maxi mum

Outdoor Air Lockouts

Cooling

F50

F80

Outdoor Air Lockout

Heating

50°

F70° F90° F

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