Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 A Manual de usuario descargar pdf (Pagina 19)

THIS SCREEN DISPLAYS THE EXHAUST FAN SPEED SET POINTS.

This screen only appears if equipped with an exhaust fan VFD controlled by

microprocessor.

The Speed Set Point is the proportional percentage of the analog output from the

controller to the VFD.

0% Speed = Min Speed (determined by VFD)

100% Speed = Max Speed (determined by VFD)

Possible Set Point Sources:

Local – The fan speed will be constant set from screen (exp. 100%).

BMS – The BMS can directly control the fan speed (requires BMS communication

option).

Building Pressure - Fan speed is determined by building pressure control loop.

Supply Fan Tracking – Exhaust speed proportionally tracks supply speed.

Outdoor Air Damper Tracking – The exhaust fan will proportionally track the

outdoor air damper, between a minimum and maximum position.

Normal Operation: During non-economizer operation, the exhaust fan will track

the outdoor air damper between the minimum outdoor air position (Min OA) and

the maximum sequence position (Max CO2 or Max BMS). *Note that if the OA

Damper Set Point is controlled by the BMS, the exhaust fan tracking algorithm

references an adjustable minimum position on the display. In this case, the

outdoor air damper must open above this position before the exhaust fan begins

increasing speed.

Economizer Operation: During economizer operation, the exhaust fan will track

the outdoor air damper between the minimum outdoor air position and the

maximum economizer position (Max Econ).

ExhaustFan Speed SetPt

Active: 100%

Source: Local 100%

(0%=Min Speed by VFD)

ExhaustFan Speed SetPt

Active: 0%

Source: OA Damper Trk

OA Damper EF Speed

Min OA 0%

Max CO2 50%

Max Econ 100%

ExhaustFan Speed SetPt

Active: 0%

Source: OA Damper Trk

OA Damper EF Speed

30% 0%

Max BMS 50%

Max Econ 100%

KƵƚĚŽŽƌĂŵƉĞƌWŽƐŝƟŽŶ

0% (MiŶ Speed)

100% (Max Speed)

ǆŚĂƵƐƚ&ĂŶ^ƉĞĞĚ

50%

100%

Normal

KƉĞƌĂƟŽŶ

ĐŽŶŽŵŝǌĞƌ

KƉĞƌĂƟŽŶ

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DDC Controller for Tempered Air Products

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Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 A Manual de usuario Pagina 19

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