KMC Controls BAC-4000 series Guida utente

Installation, Operation, and Application Guide

for

AppStat™

BAC-4000 series controllers for

Fan Coil Units, Roof Top Units, and Heat Pump Units.

Revision G

NetSensor, WinControl, and the KMC logo are registered trademarks of KMC

Controls, Inc.

AppStat, BACstage, FlexStat, FullBAC, TotalControl, SimplyVAV, and the

SimplyVAV logo are trademarks of KMC Controls, Inc.

transmitted, transcribed, stored in a retrieval system, or translated into any

language in any form by any means without the written permission of KMC

Controls, Inc.

Printed in U.S.A.

The material in this manual is for information purposes only. The contents

and the product it describes are subject to change without notice. KMC

Controls, Inc. makes no representations or warranties with respect to this

manual. In no event shall KMC Controls, Inc. be liable for any damages, direct

or incidental, arising out of or related to the use of this manual.

KMC Controls, Inc.

19476 Industrial Drive

New Paris, IN 46553

U.S.A.

TEL: 1.574.831.5250

FAX: 1.574.831.5252

E-mail: info@kmccontrols.com

Installation, Operation, and Application Guide for AppStat

2 Revision G

C o n t e n t s

Contents 3

Section 1: Introduction to the AppStat 7

Specifications 8

Installation accessories 12

AppStat model numbers 13

Safety considerations 16

Section 2: Installing the AppStat 17

Planning for motion sensing 17

Mounting the AppStat 18

Rough-in preparation 19

Installing the AppStat 19

Connecting inputs 20

Remote space temperature sensor (optional) 20

Discharge air temperature sensor 21

Fan status switch (optional) 21

Water temperature sensor 22

Outside air temperature 23

Connecting outputs 24

Connecting to a three-speed fan 24

Connecting to a modulating fan 25

Connecting on/off valves 26

Connecting to modulating valves 27

Connecting an economizer 28

Connecting power 28

Maintenance 29

Section 3: User functions 31

Operating the AppStat 31

Entering a user password 34

Changing the active setpoints 35

Setting the operating modes 36

Section 4: Commissioning functions 39

Enter the commissioning mode 40

Setting the commissioning setpoints 41

Set up communications 43

Set the time and date 45

Setting the occupancy schedule 47

Set fan coil unit system options 50

Set roof top unit system options 53

Set heat pump unit system options 56

Installation, Operation, and Application Guide for AppStat Contents

Revision G 3

Advanced options 60

Section 5: Sequences of operation 65

Room temperature setpoints 66

Types of setpoints 66

Setpoint limits 67

Occupancy, motion sensing, and standby 67

Automatic cooling and heating changeover 68

Scheduling occupancy 68

Dehumidification sequence 68

Fan status 68

Display blanking and backlight 69

Temperature sensing inputs 69

Space temperature sensing 69

Outside air temperature sensing 69

Water temperature sensor 69

Discharge air temperature sensor 70

PID control loops 70

Valve operation for fan coil units 70

On/Off valves 70

Modulating valves 71

Two-pipe water supply temperature evaluation 71

Electric heat for fan coil units 72

Fan operation for fan coil units 72

One, two, and three speed fans 72

Modulating fans 72

Automatic fan control 73

Modulating cooling and heating for Roof Top Units 73

Cooling 73

Heating 73

Valve action 73

Staged heating and cooling for for roof top and heat pump units 74

Staged cooling 74

Staged heating 74

Fan control for roof top and heat pump units 74

Economizer cooling for roof top and heat pump units 75

Heat pump unit specific functions 75

Reversing valve action 75

Auxiliary or emergency heat action 75

Section 6: Application drawings 77

Fan Coil Unit applications 78

Fan Coil Unit—Four-pipe with three-speed fan and on/off valves 78

Fan Coil Unit—Four-pipe with three-speed fan and modulating valves 80

Fan Coil Unit—Four-pipe with modulating fan and on/off valves 82

Fan Coil Unit—Four-pipe with modulating fan and modulating valves 84

Contents KMC Controls, Inc.

4 Revision G

Fan Coil Unit—Two-pipe with three-speed fan and on/off valves 86

Fan Coil Unit—Two-pipe with three-speed fan and modulating valve 88

Fan Coil Unit—Two-pipe with modulating fan and on/off valve 90

Fan Coil Unit—Two-pipe with modulating fan and modulating valve 92

Fan Coil Unit—Two-pipe with three-speed fan, modulating valve, and electric heat 94

Fan Coil Unit—Two-pipe with modulating speed fan, modulating valve, and electric heat 96

Roof Top Unit applications 98

Roof Top Unit—Two-stage gas heat and two-stage DX cooling 98

Roof Top Unit—Two-stage gas heat and two-stage DX cooling with economizer 100

Roof top unit—Cooling and heating with modulating valves and economizer 102

Roof Top Unit—Two-stage gas heat, chilled water cooling with modulating valve and

economizer 104

Roof Top Unit—Two-stage DX cooling, hot water heating with economizer 106

Heat Pump Unit applications 108

Heat pump unit—Three heat, two cool 108

Heat Pump Unit—Three heat, two cool and economizer 110

Section 7: System integration 113

BACnet objects 114

Input objects 114

Output objects 115

Value objects 117

Schedule object 119

Loop objects 119

Connecting to an MS/TP network 121

Index 125

Installation, Operation, and Application Guide for AppStat Contents

Revision G 5

Contents KMC Controls, Inc.

6 Revision G

Se c tio n 1: In tr o du c tio n to th e A ppStat

This section provides a description of the BAC-4000 series of controllers

KMC Controls, Inc.. It also introduces safety information. Review this

material before installing or operating the controllers.

The BAC-4000 series of controllers are space mounted devices that combine a

BACnet controller with temperature, humidity and motion sensors. The

controllers include programs for the following applications.

Roof top units, both single or multi-stage, or similar split or unitary

packaged systems

Heat pumps

Two and four pipe fan coil units

The AppStat controllers are native BACnet, Application Specific Controllers.

BACnet communication parameters, device instance, MAC address, baud rate,

room occupant adjustments, and application configuration values are set from

password protected front panel controls.

All models feature an integrated BACnet schedule and hardware real-time

clock with 72-hour capacitor backup for standalone operation or network

time synchronization.

A two-piece mechanical design, featuring a removable backplate, facilitates

easy wiring and installation.

Installation, Operation, and Application Guide for AppStat

Revision G 7

Specifications AppStat specifications are subject to change without notice.

User Interface

The user interface is a color display and with five push buttons. Through the

menu driven display, an operator can do the following.

Add or change user passwords

Change setpoints

Set BACnet addressing

Set up and commission the installation

Configure any available options

Security

Separate passwords for users and controls technicians.

Display type

128 × 128 pixels

Active color LCD with LED back lighting

1.00 x 1.04 inches (25 x 26 mm)

Inputs and outputs

All inputs and outputs are preprogrammed and application specific. No field

configuration is required for most installations. For details on input and

output connections see the section Application drawings on page 77.

Analog inputs

Analog inputs represent BACnet analog input objects and are configured

for discharge air temperature, remote temperature sensor, water

temperature sensor, and fan status. Not all input sensors are applicable or

required for all models.

Sensors are automatically detected.

Inputs accept industry-standard 10,000 Ω, Type II or Type III thermistors

sensors.

Input overvoltage protection up to 24 volts AC, continuous.

12-bit analog-to-digital conversion

Analog outputs

Analog outputs are configured to represent BACnet analog objects. The

outputs control modulating valves, variable speed fans, damper positions

or other equipment that requires a proportional input signal.

Section 1: Introduction to the AppStat KMC Controls, Inc.

8 Revision G

Short-circuit protected

Loads up to 10 mA at 0–12 volts DC

8-bit PWM digital-to-analog conversion

Relay outputs

Relay outputs are configured to represent BACnet binary objects. The

outputs control on/off valves, speeds for three-speed fans, fan start circuits,

or other equipment that requires an on or off input signal.

All relay outputs are normally open, SPST, Form “A” relays

1 Ampere maximum per relay at 24 volts AC or DC for each output.

Maximum for all relay outputs is 3 amperes (72VA).

Connectors

Screw terminal block mounted to backplate

Wire size 14-22 AWG

Communications—BACnet MS/TP

Integral peer-to-peer BACnet MS/TP network communications.

Network speeds from 9600 to 76,800 baud.

Front panel configurable device instance, MAC address, and baud.

Automatic baud detection.

Screw terminal block mounted to backplate. Wire size 14–22 AWG

Meets or exceeds ANSI/ASHRAE BACnet Standard 135-2008 for

Application Specific Controllers

Accuracy–temperature only models

Type Thermistor

Accuracy ±0.36° F (±0.2° C)

Resistance 10,000 Ω at 77° F (25° C)

Operating range 48 to 96° F (8.8 to 35.5° C)

Accuracy–temperature and humidity models

Temperature Sensor

Type CMOS

Accuracy ±0.9° F offset (±0.5° C) from 40° to 104° F

(4.4 to 40° C)

Resolution ±0.1°F (±0.1° C)

Operating range 36 to 120° F (2.2 to 48.8° C)

Response time 5 to 30 seconds

Installation, Operation, and Application Guide for AppStat Section 1: Introduction to the AppStat

Revision G 9

Humidity Sensor

Type CMOS

Humidity 0 to 100% RH

Accuracy at 25° C ± 2% RH from 10 to 90% RH

Response time 4 seconds or less

Regulatory

UL 916 Energy Management Equipment

FCC Class A, Part 15, Subpart B and complies with Canadian ICES-003

Class B

BACnet Testing Laboratory listed as an application specific controller

SASO PCP Registration KSA R-103263

This device complies with part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) This device may not cause harmful interference,

and (2) this device must accept any interference received, including

interference that may cause undesired operation.

Environmental limits

Operating 32 to 120° F (0 to 49° C)

Shipping –40 to 140° F (–40 to 60° C)

Humidity 0–95% relative humidity

(non-condensing)

Installation

Supply voltage 24 volts AC (–15%, +20%), 50-60 Hz, 12 VA, Class 2

only, non-supervised.

All circuits, including supply voltage, are power

limited circuits.

Weight Approximately 6 ounces (170 grams)

Case material Flame retardant plastic

Section 1: Introduction to the AppStat KMC Controls, Inc.

10 Revision G

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