KMC Controls BAC-4000 series User guide

Installation, Operation, and Application Guide
for
AppStat™
BAC-4000 series controllers for
Fan Coil Units, Roof Top Units, and Heat Pump Units.
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©2014, KMC Controls, Inc.
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.
All rights reserved. No part of this publication may be reproduced,
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: [phone]
FAX: [phone]
E-mail: [e-mail]
Installation, Operation, and Application Guide for AppStat
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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
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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
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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
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Contents KMC Controls, Inc.
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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.
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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.
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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
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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.
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