W.Tech RAA Series Manual de usuario descargar pdf (Pagina 20)

Features

• Selectable digital display indicates either

setpoint or room temperature

• Automatic heat/cool changeover via

remote sensor

• Control depending on room/return

air temperature

• Three-speed fan switch

• Operating mode changeover input for

day/night temperature settings for energy

conservation

• Operating modes: normal, night setback

freeze protection or standby

• Selectable control parameters for:

– Independently adjustable night cooling or

night heating setpoints

– Minimum/maximum electronic limit stops

– Adjustable heating/cooling changeover

switch point

– Sensor calibration

– Adjustable Free Energy Band™ for

four-pipe model

– Adjustable switching differentials for

digital outputs or proportional band

adjustment for modulating outputs

– Minimum/maximum output on/off time

for compressor protection

– Fan overrun

Submittal Summary

Fan Coil Unit

RDF... Series Fan Coil Unit Controllers

Part Number 2-pipe 4-pipe Electric Control Valve Valve

Heat Output Action Actuator

RDF10U • On/off NO or NC SFP11U

SFA11U

RDF20U • • On/off NO or NC SFP11U

SFA11U

RDF30U • On/off Heat NO or NC SFP11U

Cool NC SFA11U

RDF50.1U • 0-10 Vdc NC SFA61

RDF60.1U • 3P NO or NC SSA81

Applications Matrix

Microprocessor-

based room

controllers with

digital display

are designed for

use in heating or

cooling only and

heating and

cooling (two-pipe

or four-pipe) fan

coil systems.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 28 29

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W.Tech RAA Series Manual de usuario Pagina 20

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