KMC Controls BAC-4000 series Installation, Operation, And Application Manual

Installation, Operation, and Application Guide

for

AppStat™

BAC-4000 series controllers for

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

Revision G

Installation, Operation, and Application Guide for AppStat

©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]

2 Revision G

Installation, Operation, and Application Guide for AppStat Contents

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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Contents KMC Controls, Inc.

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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Installation, Operation, and Application Guide for AppStat Contents

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

Revision G 5

Contents KMC Controls, Inc.

6 Revision G

Installation, Operation, and Application Guide for AppStat

Sec tion 1: Introductio n to t h e A ppSt at

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.

Revision G 7

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

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.

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

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

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

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

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A

B

C

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

Dimensions

Table 1–1 AppStat Dimensions

A B C

3.50 in. 5.12 in. 1.12 in.

89 mm 130 mm 29 mm

Motion sensor

Motion sensors are options available only on select models.

Detector type Passive infrared

Range 33 feet (10 meters). See the following

diagrams.

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10 m

32.8 ft

10 m

32.8 ft

0°

46.5

°

Y

55

°

10 m

32.8 ft

10 m

32.8 ft

X

0°

Side viewTop view

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

Installation accessories

The following accessories are available from KMC Controls, Inc.

XEE-6111-040 Single-hub 120 volt power transformer

XEE-6112-040 Dual-hub 120 volt power transformer

XEE-6311-075 120/240/277/480VAC, 24 VAC, 75 VA transformer

HMO-10000W White mounting plate kit for retrofit on horizontal

boxes or 4 x 4 handy boxes

12 Revision G

BAC-4 _ _ _ CW0001

1 3-speed fan, On/off valves
2 3-speed fan, Modulating valves
3 3-speed or modulating fan,
modulating or On/Off valves
7 Modulating fan, On/Off valves
8 Modulating fan, Modulating Valves

0 Without humidity
2 With humidity

0 Without motion
2 With motion

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

AppStat model numbers

Use the following charts to identify features in a specific AppStat model.

Fan coil units—The model numbers for these controllers end with "0001".

The inputs, outputs, and sequences of operation are configured and
programmed for the following functions.

Two-pipe heating and cooling with on/off valves, modulating valves or
both

Four-pipe heating and cooling with on/off valves, modulating valves or
both

Three-speed or modulating fan control

Automatic or manual fan control

Remote space temperature sensor

Local temperature setback mode based on optional built-in motion
sensor

Dehumidification on models with humidity sensor

See the following chart for the specific features included with each model.

Illustration 1–1 Model numbers for fan coil units

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BAC-4 _ _ _ CW0002

1

2H/2C On/off valves or stages

3 2H/2C On/off or modulating valves

and economizer

0 Without humidity
2 With humidity

0 Without motion
2 With motion

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

Roof top units—The model numbers for these controllers end with "0002".

These models control roof top or similar packaged or split unitary units. The
inputs, outputs, and sequences of operation are configured and programmed
for the following functions.

Automatic or manual fan control

Modulating valves or on/off heating and cooling valves.

One or two stage heating

One or two stage cooling

Optional economizer

Remote space temperature sensor

Local temperature setback mode based on optional built-in motion
sensor

Dehumidification on models with humidity sensor

See the following chart for the specific features included with each model.

Illustration 1–2 Model numbers for roof top units

14 Revision G

Heat pump units—The model numbers for these controllers end with "0003".

The inputs, outputs, and sequences of operation are configured and
programmed for the following functions.

Two stages of heat and two stages of cooling plus auxiliary heat

Optional economizer

Dehumidification-in models with auxiliary heat and a humidity sensor

Local temperature setback mode based on optional built-in motion
sensor

Automatic or manual fan control

BAC-4 _ _ _ CW0003

1

3H/2C

3 3H/2C and economizer

0 Without humidity
2 With humidity

0 Without motion
2 With motion

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

See the following chart for the specific features included with each model.

Illustration 1–3 Model numbers for heat pump units

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Danger

Warning

Caution

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

Safety considerations

KMC Controls, Inc. assumes the responsibility for providing you a safe
product and safety guidelines during its use. Safety means protection to all
individuals who install, operate, and service the equipment as well as
protection of the equipment itself. To promote safety, we use hazard alert
labeling in this manual. Follow the associated guidelines to avoid hazards.

Danger represents the most severe hazard alert. Bodily
harm or death will occur if danger guidelines are not
followed.

Warning represents hazards that could result in severe
injury or death.

Caution indicates potential personal injury, equipment
damage, or property damage if instructions are not followed.

Note: Notes provide additional information that is important.

Tip: Provides programing tips and shortcuts that may save time.

16 Revision G

Installation, Operation, and Application Guide for AppStat

Sec tion 2: Installing the AppS tat

This section provides important instructions and guidelines for installing
the AppStat. Carefully review this information before installation begins.

Installing the sensors includes the following topics that are covered in this
section.

Planning for motion sensing on page 17

Mounting the AppStat on page 18

Connecting inputs on page 20

Connecting outputs on page 24

Connecting power on page 28

Maintenance on page 29

Planning for motion sensing

For models with a motion sensor mount the AppStat on a wall that will have
an unobstructed view of the typical traffic in the coverage area. When
choosing a location, do not install the sensor in the following areas.

Behind curtains or other obstructions

In locations that will expose it to sunlight or heat sources

Near a heating or cooling inlet or outlet.

For details on the coverage pattern, see Specifications on page 8.

Illustration 2–1 Typical motion sensing coverage area

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Section 2: Installing the AppStat KMC Controls, Inc.

The effective detection range is approximately 10 meters or 33 feet. Factors
that may reduce the range include:

The difference between the surface temperature of the object and the
background temperature of the room is too small.

Object movement in a direct line toward the sensor.

Very slow or very fast object movement.

Obstructions as shown in the illustration Typical motion sensing coverage

area on page 17.

False detections may be triggered by:

The temperature inside the detection range suddenly changes because of
the entry of cold or warm air from an air-conditioning or heating unit.

The sensor being directly exposed to sunlight, an incandescent light, or
other source of far-infrared rays.

Small animal movement.

Mounting the AppStat

For the most accurate performance, install the AppStat on an inside wall
where it can sense the average room temperature. Avoid locations with direct
sunlight, heat sources, windows, air vents, and air circulation or obstructions
such as curtains, furniture, etc.

The AppStat must not be:

Mounted on an exterior wall.

Mounted on or near an object with large a thermal mass such as a
concrete block wall.

Blocked from normal air circulation by obstructions.

Exposed to heat sources such as lights, computers, copiers, or coffee
makers, or to direct sunlight at any time of the day.

Exposed to drafts from windows, diffusers, or returns.

Exposed to air flow through connecting conduits or empty spaces behind
walls.

For models with motion sensing, see the topic, Planning for motion sensing.

18 Revision G

A

5.12 in.

130 mm

3.50 in.
89 mm

Inputs and

network

Power and outputs

Turn clockwise to remove
from base.

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Rough-in preparation

Complete rough-in wiring at each location before mounting an AppStat. This
includes the following steps.

Install the supplied mounting base directly to a wall, a vertical electrical
box, or a box with a wall plate kit.

Routing the connecting cable or cables from the AppStat to the
equipment it is controlling.

If required, install an appropriate wall plate kit.

Block leaks and airflow from conduits with plumber’s putty or similar
material.

If replacing an existing thermostat, label existing wires for reference
when removing the existing thermostat.

Illustration 2–2 AppStat mounting base details

Installing the AppStat

To install the controller on a mounting base, do the following:

1. Turn the Allen screw in the base of the sensor clockwise until it clears
the case.

2. Swing the AppStat away from the mounting base to remove it.

3. Route wiring for the AppStat through the mounting base.

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Turn counterclockwise
until the screw engages
the base.

Caution

Section 2: Installing the AppStat KMC Controls, Inc.

4. Position the base with the embossed UP toward the ceiling and fasten it
directly to a vertical 2x4 inch electrical box. For horizontal boxes or
4x4 applications, use a wall plate kit. See Installation accessories on page

12 for part numbers.

5. Connect the wires for the AppStat to the terminals in the mounting base.

6. Place the top of the sensor over the top of the mounting base and swing
it down over the Allen screw bracket. Be careful not to pinch any wiring.

7. Turn the Allen screw counterclockwise until it backs out of the mounting
base and engages the case.

To prevent mounting screw heads from touching the circuit
board in the controller, use only the mounting screws
supplied with the controller. Using screws other than the
type supplied may damage the AppStat.

Connecting inputs

The inputs for the AppStat are configured for specific functions and do not
require set up in the field. Not all inputs are required for every model or
application. See the topic BACnet objects on page 114 for the configuration
properties of the input objects.

Remote space temperature sensor (optional)

Connect a 10kΩ, TypeII thermistor temperature sensor to the remote space
temperature (RS) input and ground (GND) terminals. The input includes the
internal pull-up resistor. An STE-6011W10 sensor is suitable for this
application. Follow the instructions supplied with the sensor for installation.

When a remote space temperature input is connected to the AppStat, the
remote temperature is used instead of the internal temperature sensor.

20 Revision G

STE-6011W10

or equivalent

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

STE-1405 or

equivalent

DAT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Illustration 2–3 Wiring for remote space temperature sensor

Discharge air temperature sensor

Connect a 10kΩ, Type III thermistor temperature probe to the discharge air
temperature (DAT) input. The input includes the internal pull-up resistor. An
STE-1405 sensor is suitable for this application. Follow the instructions
supplied with the sensor for installation.

Illustration 2–4 Wiring for Discharge Air Temperature Sensor

Fan status switch (optional)

Connect a Normally Closed Fan Status switch to the Discharge Air

Revision G 21

Temperature (DAT) input and ground (GND) terminals. The input includes
the internal pull-up resistor. A CSE-1102 differential pressure switch is

FST

N.C Fan Status

CSE-1102

FAN

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Section 2: Installing the AppStat KMC Controls, Inc.

suitable for this application. Follow the instructions supplied with the switch
for installation.

Illustration 2–5 Wiring for a fan status switch

Water temperature sensor

Connect a 10kΩ, Type III thermistor temperature probe to the water
temperature (WST) input. The input includes the internal pull-up resistor. An
STE-1455 sensor is suitable for this application. Follow the instructions
supplied with the sensor for installation.

Note: The water temperature sensor is a required input sensor for 2-pipe fancoil

units.

22 Revision G

STE-1455 or

equivalent

WST

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

STE-1451 or
equivalent

MS/TP

+B

A

RS

OAT

GND

DAT

ECON

G

Y1

Y2

RC

W1

W2
RH

AO6

AO7

COM

24VAC

OAT

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Illustration 2–6 Wiring for a water temperature sensor

Outside air temperature

Connect a 10kΩ, Type III thermistor temperature probe to the outside air
temperature (OAT) input. The input includes the internal pull-up resistor. An
STE-1451 sensor is suitable for this application. Follow the instructions
supplied with the sensor for installation.

Illustration 2–7 Wiring for an outside air temperature sensor

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Caution

Section 2: Installing the AppStat KMC Controls, Inc.

Connecting outputs

The AppStat outputs are model dependent and are configured for specific
applications.

No field programming or set up is required or possible.

Depending on model and application, the AppStat outputs are designed
for either 24 voltAC or 0-10 voltDC loads.

The outputs may represent analog or digital signals.

See the topic BACnet objects on page 114 for the configuration properties
of the output objects.

Improperly connecting loads or equipment to output
terminals may damage the equipment. Connect only as
shown in the following diagrams or application drawings.

Connecting to a three-speed fan

The following diagram shows the connections for a three-speed fan. The fan
circuits must be a 24-volt AC pilot duty only.

For a single-speed fan, use only the FAN-L connection.

For a two-speed fan, use the FAN-L and FAN-H connections.

For a three-speed, use FAN-L, FAN-M, and FAN-H

24 Revision G

High

Med

LoW

Com

24 VAC

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Illustration 2–8 Connections to a three-speed fan

Connecting to a modulating fan

The following diagram shows the connections for a modulating speed fan.

The fan start circuit must be a 24-volt AC circuit. Connect it to the
FAN-L output.

The speed control is a 0-10 volt DC analog output.

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Speed

Start

Com

24 VAC

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Cooling Heating

24 VAC

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Section 2: Installing the AppStat KMC Controls, Inc.

Illustration 2–9 Connections for a modulating fan

Connecting on/off valves

The following diagram shows the connections on/off valves.

The valves are activated by 24-volts AC.

The outputs are 24-volt relays.

Illustration 2–10 Connections to on/off valves

26 Revision G

0-10
VDC

0-10
VDC

Cooling Heating

24 VAC

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Connecting to modulating valves

The following diagram shows the connections for a modulating mixing
valves. The valve control signal is a 0-10 volt analog output.

Illustration 2–11 Modulating heating and cooling valves

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0-10

VDC

24 VAC

MS/TP

+B

A

RS

OAT

GND

DAT

ECON

G

Y1

Y2

RC

W1

W2
RH

AO6

AO7

COM

24VAC

Section 2: Installing the AppStat KMC Controls, Inc.

Connecting an economizer

The following diagram shows the connections for an economizer. The damper
control signal is a 0-10 volt analog output.

Illustration 2–12 Wiring for an economizer

Connecting power

The AppStat requires an external, 24 volt, AC power source. Use the
following guidelines when choosing and wiring transformers.

Use only a Class-2 transformer of the appropriate size to supply power.

KMC Controls recommends powering the AppStat from a dedicated
controls transformer.

Connect the transformer’s neutral lead to the COM terminal.

Connect the AC phase lead to the 24VAC terminal.

Power is applied to the controller when the transformer is powered.

See Installation accessories on page 12 for a list of transformers available from

28 Revision G

KMC Controls, Inc.

24 VAC
Class-2

Controls

transformer

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 2: Installing the AppStat

Illustration 2–13 Wiring for AppStat power

Maintenance

Remove dust as necessary from the holes in the top and bottom. Clean the
display with soft, damp cloth and mild soap.

Revision G 29

Section 2: Installing the AppStat KMC Controls, Inc.

30 Revision G

COOLING SETPT

Up and down
buttons

Soft key

buttons

Soft key

bar

Optional
motion sensor

72

F

°

AUTO AUTO

DoneEnterCncl

Installation, Operation, and Application Guide for AppStat

Sec tion 3: Use r f u n c tio ns

This section covers topics for the end user in a facility.

AppStat user functions are limited to changing the following functions.

Active temperature setpoints

Fan operation

Changing between heating and cooling

Override scheduled occupancy or occupancy based on the schedule in
the AppStat.

Change the display between Fahrenheit and Celsius

Operating the AppStat

AppStat functions are accessible through a user interface consisting of simple,
context sensitive menus. The menus are opened and options are selected by
using the buttons and a color display on the front of the AppStat.

Pressing either the up button or down button changes a selection,
setting, or value.

Pressing the Enter button saves the selected setting or value. Typically
the Enter button is the middle of the three buttons below the display.

Saving a selection also advances to the next display.

Illustration 3–1 AppStat display and buttons

Revision G 31

Section 3: User functions KMC Controls, Inc.

The three buttons below the display are defined by labels in the soft key bar.
Typically the buttons are designated for the following functions.

Back—Returns to the previous menu.

Cncl—Cancels current changes.

Done—Push this button at any point while entering a value. For example,

if you have entered the first two digits of a password and the remaining
two digits are correct, pushing Done completes the entry of the
password.

Enter—Pushing this button enters the selection and advances to the next

step.

Exit—Returns to temperature display.

The operating modes of the AppStat are represented by the display icons.

Table 3–1 Operating mode icons

Icon Description Mode

The fan icon rotates when the system
fan is operational. In systems with
multispeed fans the icon rotation is
the same regardless of speed. When
fan operation is set to automatic, the
word "Auto" is placed under the
icon.

Occupied—Occupancy is set to
occupied by the schedule maintained
in the controller.

Unoccupied—Occupancy is set to
unoccupied by the schedule
maintained in the controller.

Standby—The space is temporarily
unoccupied because of lack of
detected motion in the room.

Override—A user has entered
temperature setpoints that override
the unoccupied setpoints.

Fan

Occupancy

Occupancy

Occupancy

Occupancy

Cooling—The system will cool the
space until the cooling setpoint is
reach. The icon is in motion when
cooling is taking place.

32 Revision G

Heating/Cooling

Installation, Operation, and Application Guide for AppStat Section 3: User functions

Operating mode icons (continued)

Icon Description Mode

Heating—The system will heat the
space until the heating setpoint is
reached. The icon is in motion when
heating is taking place.

Off System is off Heating/Cooling

Dehumidification—During
dehumidification the system will
heat and cool at the same time to
remove humidity and maintain the
active temperature setpoint. The icon
is in motion while dehumidification
is taking place.

Heating/Cooling

Heating/Cooling

Revision G 33

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

Section 3: User functions KMC Controls, Inc.

Entering a user password

User functions may require a password consisting of four numbers. Once a
user password is entered it will remain active for 60-seconds after the last
button is pushed.

Enter a user password

Procedure Steps Display

1 Starting display

2 Enter the Level 1

password.

Start at the temperature display.

1.

Press any button on the AppStat. The display
changes to the Security User Level display.

2.

Press either the or button to change the
first digit of the password.

3.

Press the Enter button to select the next
digit. Repeat for all four digits.

4.

If the password is correct, the display will
advance to the first menu.

34 Revision G

F

°

70

AUTO AUTO

F

°

68

HEATING SETPT

Done

Enter

Cncl

F

°

72

COOLING SETPT

Done

Enter

Cncl

Installation, Operation, and Application Guide for AppStat Section 3: User functions

Changing the active setpoints

To enter or change the active temperature setpoints you may need user
password. To enter the password, see Entering a user password on page 34.

Note: In the following procedure the current active setpoint–either cooling or

heating–is the first setpoint to change. Once that setpoint is entered, the
display advances to the next setpoint.

To change the operation of the fan, occupancy, or heating/cooling, see the
topic Setting the operating modes on page 36.

Change the active temperature setpoints

Procedure Steps Display

1 Starting display

2 Change the active

setpoints

Start at the temperature display.

Note:

The next step may require a user

password. See

34

.

1.

Press either the or button to change the
active temperature setpoint.

Entering a user password on page

Note: A user password may be required

after pushing the first button.

2.

Press the Enter button to save the value. The
display will advance to the next setpoint

3.

Press either the or button to change the
next setpoint.

4.

Press the Enter button to save the value. The
display will return to the temperature
display.

Revision G 35

F

°

70

AUTO AUTO

Enter

Cncl

MODE: HEAT
COOL

AUTO

OFF

Enter

Cncl

MODE: EMERGENCY
HEAT
COOL

AUTO

OFF

Section 3: User functions KMC Controls, Inc.

Setting the operating modes

The operating modes set the following functions.

Fan operation

Changing between heating and cooling

Override scheduled occupancy or occupancy that has been set by a
schedule.

Change the display units from Fahrenheit to Celsius.

To change the occupied temperature setpoints, see the topic Changing the

active setpoints on page 35.

Set the operating modes

Procedure Steps Display

1 Starting display

2 Change the heating

or cooling mode.

Start at the temperature display.

Note:

The following procedures may require a

user password. See

page 34

1.

.

Push the button under the heating/cooling

Entering a user password on

icon.

Note: If a user password has previously been

entered or if the AppStat has not been set up
with a user password, entering a password is
not required.

2.

Press either the or button to select the
heating/cooling mode. The mode may be one
of the following.

Emergency—(Option) Turns on the auxiliary
heating in a heat pump unit.

Heat—The system will only heat the space.

Cool—The system will only cool the space.

Auto—The system will switch between
heating and cooling.

Heating/cooling icons

Off—The system is turned off.

3.

Press the Enter button to save the setting.
The display returns to the temperature
display.

36 Revision G

Enter

Cncl

FAN: ON
AUTO

Enter

Cncl

FAN: HIGH
MED
LOW
AUTO

Installation, Operation, and Application Guide for AppStat Section 3: User functions

Set the operating modes (continued)

Procedure Steps Display

1.

3 Set the fan mode.

Push the button under the fan icon.

Note: If a user password has previously been

entered or if the AppStat has not been set up

Fan icon

with a user password, entering a password is
not required.

2.

Press the Enter button to select the next
digit. Repeat for all four digits.

3.

Press either the or button to select the
fan mode from the following options.

Auto—Sets the fan to run only when

1-speed fan option

there is a call for heat or cooling. The
word AUTO will be placed under the fan
icon.

On—Sets a single speed fan will run
continuously.

Low, Med, High—Sets the speed at which
3-speed or modulating fans will run

Multi-speed fan option

continuously.

4.

Press the Enter button to save the setting.
The display returns to the temperature
display.

Revision G 37

F

°

65

AUTO AUTO

Enter

Cncl

LOCAL OVRD: ON
OFF

F

°

70

AUTO AUTO

°

21

c

.0

AUTO AUTO

Section 3: User functions KMC Controls, Inc.

Set the operating modes (continued)

Procedure Steps Display

4 Change the override

setpoint

Entering an override setpoint can only take
place if the AppStat is in the unoccupied mode.

1.

Push the button under the unoccupied icon

.

Note: If a user password has previously been

entered or if the AppStat has not been set up
with a user password, entering a password is
not required.

2.

Press either the or button to change the
first digit of the password.

3.

Press the Enter button to select the next
digit. Repeat for all four digits.

4.

Press either the or button to turn the
override on or off.

Override Off—The controller uses the
unoccupied setpoint as the active setpoint.

Override On—the controller changes to the
occupied setpoint which can then be
temporarily changed.

5.

Press the Enter button to save the setting.

5 Change the display

38 Revision G

units

Note: When the system is in the unoccupied

mode, changing the active setpoint will
automatically place the system in the
override mode.

To temporarily change the display units to
either Celsius or Fahrenheit, press and hold the
middle button under the display until the units
change.

Installation, Operation, and Application Guide for AppStat

Sec tion 4: Co m m i s s io n ing f u n c t ions

This topics in this section are advanced topics for control technicians and
engineers. These topic cover procedures for the initial AppStat setup.

The AppStat commissioning functions are values and settings that are entered
during the installation and commissioning of a controller and the equipment
it is controlling. Typically these functions do not change after the installation
and commissioning process.

To set up the commissioning functions, you will need the following
information.

Information about the equipment

The sequence of operation for the equipment

The building automation system plans for controllers that are part of a
network.

Users may change the occupied heating and cooling setpoints without
accessing the commissioning functions. This procedure is covered in the topic

User functions on page 31.

Note: The instructions for the AppStat commissioning functions cover all of the

functions that can be set in the controller. Not all functions are available on
every model of controller. Consult the installation and operation manual
supplied with the controller to verify the application programming in the
AppStat.

Revision G 39

F

°

70

AUTO AUTO

Push together for
commissioning

AUTO AUTO

70

F

°

SECURITY

ADMIN LEVEL

0 0 0 0

Enter

Cncl

MAIN

SETPOINT

SCHEDULE
SYSTEM
COMM
ADVANCED

Section 4: Commissioning functions KMC Controls, Inc.

Enter the commissioning mode

For access to the commissioning functions you will need to know Password 2.

If the controller has not been previously set up, no password is required.

A new Password 2 can be entered in the advanced commissioning
functions. See the topic Advanced options on page 60.

Enter the commissioning mode

Procedure Steps Display

1 Starting display

2 Enter the

commissioning
password

Start from the temperature display.

1.

Press the left and right buttons below the
display at the same time and hold them until
the display changes to the SECURITY USER
LEVEL display.

Note: If Password 2 has not previously been

entered, the display will change to the
MAINmenu.

2.

Press either the or button to change the
first digit of Password 2.

3.

Press the Enter button to select the next
digit. Repeat for all four digits. The Enter
button is the middle of the three buttons
below the display.

3 Select a

40 Revision G

commissioning
function

Access to the commissioning functions always
starts at the MAIN menu display.

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

Enter

Cncl

MAIN

SETPOINT

SCHEDULE
SYSTEM
COMM
ADVANCED

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Setting the commissioning setpoints

The commissioning setpoints set the operational setpoints and limits for the
AppStat. The functions of the setpoints and how they are used are describe in
the topic Room temperature setpoints on page 66. Setting commissioning
setpoints requires entering Password2 which is described in the topic Enter

the commissioning mode on page 40.

Note: Not all setpoints in the following procedure are applicable to all models of

AppStat. Those setpoints are marked as (optional).

Procedure to set the commissioning setpoints

Procedure Steps Display

1.

1 Starting display

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

2 Choose and set the

setpoints.

1.

From the MAIN menu , press either the or

button to select SETPOINTS.

2.

Press Enter. The SETPOINT menu opens

3.

Choose and set each of the following
setpoints.

Revision G 41

Back

Enter

Cncl

SETPOINT

OCC COOL

OCC HEAT

UNOCC COOL
UNOCC HEAT
MIN COOLING
MAX HEATING
DIFFERENTIAL

Section 4: Commissioning functions KMC Controls, Inc.

Procedure to set the commissioning setpoints (continued)

Procedure Steps Display

OCC COOL—The cooling setpoint that is
used as the active setpoint when the system
is occupied.

OCC HEAT—The heating setpoint that is
used as the active setpoint when the system
is occupied.

UNOCC COOL—The cooling setpoint that is
used as the active setpoint when the system
is unoccupied.

UNOCC HEAT—The heating setpoint that is
used as the active setpoint when the system
is unoccupied.

MIN COOLING—The minimum cooling
setpoint that a user can select as the active
setpoint.

MAX HEATING—The maximum heating
setpoint that a user can select as the active
setpoint.

DIFFERENTIAL—The minimum value
between the cooling or heating setpoints.
The AppStat will always maintain this
difference between setpoints.

STBY OFFSET—(optional) A value used to
calculate the standby setpoint. The standby
setpoint is calculated by adding or
subtracting the offset value to or from the
value of the occupied setpoint.

DEHUM SETPOINT—(optional) Sets the
setpoint for dehumidification.
Dehumidification starts when the relative
humidity is above the dehumidification
setpoint.

DEHUM DEADBAND—(optional) The
system will remain in dehumidification until
the relative humidity falls below a value of
dehumidficaion setpoint minus the
dehumidification deadband value.

42 Revision G

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT
SCHEDULE
SYSTEM

COMM

ADVANCED

BackEnterExit

COMM

DEVICE ID

MAC
BAUD

BackEnterExit

D ID: 0000001

DoneEnterEnter

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up communications

Setting BACnet communications properties is required only if the AppStat is
integrated into a network with other BACnet controllers. Entering the
communications properties requires entering Password 2 which is described
in the topic Enter the commissioning mode on page 40.

See the topic Connecting to an MS/TP network on page 121 for network
wiring details.

Set BACnet communication properties

Procedure Steps Display

1.

1 Starting display

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

2 Change the network

communication
properties.

1.

From the MAIN menu , press either the or

button to select COMM.

2.

Press Enter. The COMMmenu opens.

3.

Choose and set the following properties.

l DEVICE ID—This is the BACnet device

instance. The device instance must be
within the range of 1 to 4,194,302.

l MAC—The MAC address must be in the

range of 1-127.

l BAUD—Set to match other devices on

the BACnet MS/TP network. The choices
are Auto, 9600, 19,200, 38,400, or 76,800.

Note: After changing a communication

property the AppStat will reset.

Revision G 43

MAC: 1

DoneEnterEnter

BAUD: 76800

38400
19200
9600

Auto

DoneEnterCncl

Section 4: Commissioning functions KMC Controls, Inc.

Set BACnet communication properties (continued)

Procedure Steps Display

44 Revision G

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT

SCHEDULE

SYSTEM
COMM
ADVANCED

BackEnterExit

SCHEDULE

SET CLOCK

SETPOINT HOLD
ENTIRE WEEK
WEEKDAYS
WEEKEND
INDV DAYS
HOLIDAYS

DelEnterExit

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set the time and date

Setting the time and date requires entering Password 2 which is described in
the topic Enter the commissioning mode on page 40.

Note: If the AppStat is connected to a BACnet network that includes a time service

master, the time and date are automatically set to the network time and
date.

To change the schedule, see the procedure Setting the occupancy schedule on

page 47.

Set the time and date

Procedure Steps Display

1.

1 Starting display

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

1.

2 Select the

SCHEDULE menu.

From the MAIN menu , press either the or

button to select SCHEDULE.

2.

Press Enter. The SCHEDULE menu opens.

3.

Choose SET CLOCK and then press Enter.
The SET Clock menu opens.

Revision G 45

SET CLOCK

DATE

TIME
UTC OFFSET
DST ENABLE
DST AUTO
DST START
DST END

BackEnterExit

Section 4: Commissioning functions KMC Controls, Inc.

Set the time and date (continued)

Procedure Steps Display

3 Choose a clock

function to set.

Choose one of the features in the SET CLOCK
menu to change the date, time, or Daylight
Saving Time (DST) setting.

DATE—The current calendar date.

TIME—Time is set according to a 12-hour
clock.

UTC OFFSET—Enter the time offset—in
minutes—between local standard time and
Universal Time Coordinated. The value of
the property ranges from -780 to +780
seconds. The time zones to the west of the
zero degree meridian are positive values;
those to the east are negative values. The
value of the UTC Offset property is
subtracted from the UTC received in a UTC
Time Synchronization service request to
calculate the correct local standard time.

DST ENABLE—Set to TRUE to enable
Daylight Saving Time and FALSE to use
standard time year around.

DST AUTO—When set to TRUE, the AppStat
automatically calculates the start and end
dates from relative dates. For example, set
DST START to the first Sunday in March
instead of a calendar date.

DST START and DST END—Enter the dates
and time to begin observing DST. If DST
AUTO is set to TRUE the dates are relative;
if set to FALSE the date is a calendar date.

46 Revision G

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT

SCHEDULE

SYSTEM
COMM
ADVANCED

BackEnterExit

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Setting the occupancy schedule

The schedule in the AppStat controls the occupancy mode. If the schedule is
set to ON, the AppStat uses the occupied setpoint as the active setpoint. If the
schedule is OFF, the unoccupied setpoint is used.

Note: The schedule in the AppStat is a BACnet schedule object. If the AppStat is

connected to a BACnet network the schedule can be set up with a BACnet
operator workstation.

Setting the occupancy schedule requires entering Password2 which is
described in the topic Enter the commissioning mode on page 40.

To change the time and date, see the procedure Set the time and date on page

45.

Set up schedules

Procedure Steps Display

1.

1 Starting display

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

1.

2 Select the

SCHEDULE menu.

Revision G 47

From the MAIN menu , press either the or

button to select SCHEDULE.

2.

Press Enter. The SCHEDULE menu opens.

SCHEDULE
SET CLOCK
SETPOINT HOLD

ENTIRE WEEK

WEEKDAYS
WEEKEND
INDV DAYS
HOLIDAYS

BackEnterExit

ENTIRE WEEK

1: 12:00:00 AM ON

2:

--:--:---- ----

3:

--:--:---- ----

4:

--:--:---- ----

5:

--:--:---- ----

6:

--:--:---- ----

DelEnterExit

Section 4: Commissioning functions KMC Controls, Inc.

Set up schedules (continued)

Procedure Steps Display

1.

3 Choose and set a

weekly schedule.

From the SCHEDULE menu, choose one of
the following schedule entry methods to
enter a weekly schedule.

l ENTIRE WEEK—Sets the schedule for

all seven days of the week at one time.

l WEEKDAYS—Sets the schedule for

Monday to Friday. Saturday and Sunday
are not changed

l WEEKEND—Sets the schedule for

Saturday and Sunday. Monday to Friday
remain unchanged.

l INDIVIDUAL DAYS—Sets the schedule

for just the selected day of the week.

2.

Change the daily times and values in the
schedule to set the occupancy mode to either
ON or OFF.

l When finished with each pair push Enter

or Done.

l When finished with the schedule push

Exit to return to the SCHEDULE menu.

48 Revision G

HOLIDAYS
HOL1
HOL2
HOL3
HOL4
HOL5
HOL6
HOL7

DelEnterExit

HOL2
DATE
DEC 12 2013
TYPE: DATE

DelEnterExit

HOL3

START DATE:

NOV 27 2013
END DATE:
DEC 12 2013
TYPE: DATE RANGE

DelEnterExit

HOL5

MON WK DAY:

OCT 31 THU
TYPE: WEEK N DAY

DelEnterExit

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up schedules (continued)

Procedure Steps Display

4 Choose and set a

holiday schedule

Use a holiday schedule to override the values in
the weekly schedule. Months and years can be
entered as follows:

To choose ANY as the year, select the year
and push the down arrow past the current
year

For month the choices are any of the twelve
months of the year, ANY, EVEN, and ODD.

1.

From the SCHEDULE menu, choose
HOLIDAYS.

2.

From the HOLIDAYS list, choose a holiday
to edit.

3.

From the menu for the holiday, choose

l DATE—Snter a single date on which the

holiday schedule will override the values
of the weekly schedule.

l DATE RANGE—Enter a range of dates

on which the values and times listed in
the holiday schedule will override the
values of the weekly schedule.

l WEEK N DAY—A day of the week and

month on which the values and times
listed in the holiday schedule will
override the values of the weekly
schedule.

Revision G 49

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT
SCHEDULE

SYSTEM

COMM
ADVANCED

BackEnterExit

SYSTEM

LOCAL OVRD TIME

FAN OFF DELAY
OCCUPIED FAN
CL VALVE ACTION
HT VLV ACTION
FAN MAXIMUM
FAN MINIMUM

BackEnterExit

SYSTEM

LOCAL OVRD TIME

FAN OFF DELAY
OCCUPIED FAN
VLV ACTION
FAN MAXIMUM
FAN MINIMUM
AUX HEAT

BackEnterExit

BackEnterCncl

LOCAL OVRD TIME

2 60 mins

Section 4: Commissioning functions KMC Controls, Inc.

Set fan coil unit system options

The items in the system menu control application specific functions for fan coil
units. Entering the system options requires entering Password 2 which is
described in the topic Enter the commissioning mode on page 40.

Set up fan coil unit system options

Procedure Steps Display

1.

1 Starting display.

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

1.

2 Choose and set the

fan coil system
options.

From the MAIN menu , press either the or

button to select SYSTEM.

2.

Press Enter. The SYSTEM menu opens.

3 Set the local override

time.

3.

Choose any of the following items.

LOCAL OVRD TIME

FAN OFF DELAY

OCCUPIED FAN

CL VALVE ACTION (Four-pipe only)

HT VLV ACTION (Four-pipe only)

VLV ACTION (Two-pipe only)

FAN MAXIMUM (Modulating fans only)

FAN MINIMUM (Modulating fans only)

FAN SPEEDS (Three speed fans only)

AUX HEAT (Two-pipe only)

From the SYSTEM menu choose LOCAL OVRD
TIME to set the time the AppStat will hold an
override temperature setpoint as the active
setpoint. At the end of the period, the AppStat
will use either an occupied or unoccupied
setpoint as the active setpoint.

50 Revision G

BackEnterCncl

FAN OFF DELAY

2 2 mins

BackEnterCncl

OCCUPIED FAN:

ON

OFF

CL VLV ACTION:

NORMAL OPEN

NORMAL CLOSED

DelEnterCncl

HT VLV ACTION:

NORMAL OPEN

NORMAL CLOSED

DelEnterCncl

VLV ACTION:

NORMAL OPEN

NORMAL CLOSED

DelEnterCncl

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up fan coil unit system options (continued)

Procedure Steps Display

4 Set the fan delay.

5 Set the occupied fan

control.

6 Set the valve action.

From the SYSTEM menu choose FAN DELAY
OFF to set the time the system fan will continue
to run after the last heating or cooling stage is
turned off.

From the SYSTEM menu choose OCCUPIED
FANto choose the following:

When ON, the fan will run continuously
when the schedule is occupied (On).

When the schedule is unoccupied (Off) the
fan will run only when there is a call for
heating or cooling.

Select one of the valve actions from the
SYSTEMmenu. Not all choices apply to every
application.

CL VALVE ACTION—(Four-pipe only)

HT VLV ACTION—(Four-pipe only)

VLV ACTION—(Two-pipe only)

Valve action selections are the same for all three
types of valves.

NORMAL OPEN—The valve changes from
fully open to fully closed as the AppStat
varies the valve output from 0 to 10 volts.

NORMAL CLOSED—The valve changes
from fully closed to fully open as the
AppStat varies the valve output from 0 to 10
volts.

Revision G 51

BackEnterCncl

FAN MINIMUM:

35 %utoz

BackEnterCncl

FAN MAXIMUM:

100 %utoz

BackEnterCncl

FAN SPEEDS:

THREE SPEEDS

TWO SPEEDS
SINGLE SPEED

AUX HEAT:

Enable

Disable

DelEnterCncl

Section 4: Commissioning functions KMC Controls, Inc.

Set up fan coil unit system options (continued)

Procedure Steps Display

7 Set fan speeds for

modulating speed
fans.

8 Set fan speeds for

three-speed fans.

9 Enable auxiliary heat

Select FAN MINIMUM or FAN MAXIMUM
from the SYSTEM menu to set fan speed for
modulation fans.

FAN MINIMUM—Sets the slowest speed at
which the fan will run when a user sets the
fan speed to LOW.

FAN MAXIMUM—Sets the fastest speed at
which the fan will run when a user sets the
fan speed to HIGH.

The MED speed is automatically set halfway
between the LOW and HIGH settings.

Select FAN SPEEDS from the SYSTEM menu to
designate the number of speeds at which the
installed fan will run.

Choose AUX HEAT from the SYSTEM menu to
enable auxiliary heat in two-pipe applications.

52 Revision G

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT
SCHEDULE

SYSTEM

COMM
ADVANCED

BackEnterExit

BackEnterExit

SYSTEM

LOCAL OVRD TIME

FAN OFF DELAY
OCCUPIED FAN
MIN OFF TIME
STAGE DELAY
ECON ENABLE
MIN ECON DAMPER

SYSTEM
STAGE DELAY
ECON ENABLE
MIN ECON DAMPER
ECON ENABLE TEM
MIN DAT
DEHUM ENABLE
HEATING FAN

BackEnterExit

BackEnterCncl

LOCAL OVRD TIME

2 60 mins

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set roof top unit system options

The items in the system menu control application specific functions for roof
top units. Entering the system options requires entering Password 2 which is
described in the topic Enter the commissioning mode on page 40.

Set up roof top unit system options

Procedure Steps Display

1.

1 Starting display.

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

1.

2 Choose and set the

roof top system
options.

From the MAIN menu , press either the or

button to select SYSTEM.

2.

Press Enter. The SYSTEM menu opens.

3 Set the local override

time.

3.

Choose any of the following items.

LOCAL OVRD TIME

FAN OFF DELAY

OCCUPIED FAN

MIN OFF TIME

STAGE DELAY

ECON ENABLE

MIN ECON DAMPER

ECON ENABLE TEM

MIN DAT

HEATING FAN

From the SYSTEM menu choose LOCAL OVRD
TIME to set the time the AppStat will hold an
override temperature setpoint as the active
setpoint. At the end of the period, the AppStat
will use either an occupied or unoccupied
setpoint as the active setpoint.

Revision G 53

BackEnterCncl

FAN OFF DELAY

2 2 mins

BackEnterCncl

OCCUPIED FAN:

ON

OFF

BackEnterCncl

MINOFF TIME:

5 mins

BackEnterCncl

STAGE DELAY:

10 mins

Section 4: Commissioning functions KMC Controls, Inc.

Set up roof top unit system options (continued)

Procedure Steps Display

4 Set the fan delay.

5 Set the occupied fan

control.

6 Set up staged cooling

and heating.

From the SYSTEM menu choose FAN OFF
DELAY to set the time the system fan will
continue to run after the last heating or cooling
stage is turned off.

From the SYSTEM menu choose OCCUPIED
FANto choose the following:

When ON, the fan will run continuously
when the AppStat schedule is ON (occupied).

When the AppStat schedule is OFF
(Unoccupied) the fan will run only when
there is a call for heating or cooling.

To set up staged cooling and heating do the
following:

1.

From the SYSTEM menu choose MIN OFF
TIME to enter the time a stage must remain
turned off before it can be turned on again.

2.

From the SYSTEM menu choose STAGE
DELAY to enter the time the first stage must
remain turned on before the second stage
can be turned on.

54 Revision G

BackEnterCncl

ECON ENABLE:

ENABLED

DISABLED

BackEnterCncl

MIN ECON DAMPER:

10%

BackEnterCncl

ECON ENABLE TEM:

60 °F

BackEnterCncl

MIN DAT:

55 °F

BackEnterCncl

DEHUM ENABLE:

ENABLE

DISABLE

BackEnterCncl

HEATING FAN:

AUTO

OFF

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up roof top unit system options (continued)

Procedure Steps Display

7 Enable the

economizer.
(Optional feature)

The economizer feature is an option and not
available on all models.

To set up the economizer do the following:

1.

From the SYSTEM menu choose ECON
ENABLE to enable the economizer
application.

2.

From the SYSTEM menu choose MIN ECON
DAMPER to set the minimum position for
the economizer damper.

3.

From the SYSTEM menu choose ECON
ENABLE TEM. Enter the value that the
outside air temperature must fall below
before the economizer damper can open.

4.

From the SYSTEM menu choose MIN DAT.
Enter the minimum discharge air
temperature that will be allowed during
cooling when the economizer is enabled.

8 Enable

9 Set heating fan

Revision G 55

dehumidification.
(Optional feature)

control.

From the SYSTEM menu choose DEHUM
ENABLE to enable or disable dehumidification.
Dehumidification is only available on models
with a humidity sensor.

From the SYSTEM menu choose HEATING
FAN and then choose one for the following.

AUTO—The fan runs only on a call for heat.

OFF—The AppStat will not command the fan
to run. Typically this setting used for
systems with baseboard heat or some similar
split system configuration.

F

°

70

AUTO AUTO

SECURITY

ADMIN LEVEL

0 0 0 0

MAIN
SETPOINT
SCHEDULE

SYSTEM

COMM
ADVANCED

BackEnterExit

BackEnterExit

SYSTEM

LOCAL OVRD TIME

FAN OFF DELAY
OCCUPIED FAN
MIN OFF TIME
STAGE DELAY
ECON ENABLE
MIN ECON DAMPER

SYSTEM

ECON ENABLE TEM

MIN DAT
REV VLV PLRTY
AUX HEAT
AUX HT LOCKOUT
COMP LOCK TEMP
DEHUM ENABLE

BackEnterExit

Section 4: Commissioning functions KMC Controls, Inc.

Set heat pump unit system options

The items in the system menu control application specific functions for heat
pump units. Entering the system options requires entering Password 2 which
is described in the topic Enter the commissioning mode on page 40.

Set up heat pump unit system options

Procedure Steps Display

1.

1 Starting display.

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

1.

2 Choose and set the

heat pump system
options.

From the MAIN menu , press either the or

button to select SYSTEM.

2.

Press Enter. The SYSTEM menu opens.

3.

Choose any of the following items.

LOCAL OVRD TIME

FAN OFF DELAY

OCCUPIED FAN

MIN OFF TIME

STAGE DELAY

ECON ENABLE (optional)

MIN ECON DAMPER (optional)

ECON ENABLE TEM (optional)

MIN DAT (optional)

REV VLV PLRTY

AUX HEAT (optional)

AUX HT LOCKOUT (optional)

COMP LOCK TEMP

DEHUM ENABLE (optional)

56 Revision G

BackEnterCncl

LOCAL OVRD TIME

2 60 mins

BackEnterCncl

FAN OFF DELAY

2 2 mins

BackEnterCncl

OCCUPIED FAN:

ON

OFF

BackEnterCncl

MINOFF TIME:

5 mins

BackEnterCncl

STAGE DELAY:

10 mins

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up heat pump unit system options (continued)

Procedure Steps Display

3 Set the local override

time.

4 Set the fan delay.

5 Set the occupied fan

control.

6 Set up staged cooling

and heating.

From the SYSTEM menu choose LOCAL OVRD
TIME to set the time the AppStat will hold an
override temperature setpoint as the active
setpoint. At the end of the period, the AppStat
will use either an occupied or unoccupied
setpoint as the active setpoint.

From the SYSTEM menu choose FAN DELAY
OFF to set the time the system fan will continue
to run after the last heating or cooling stage is
turned off.

From the SYSTEM menu choose OCCUPIED
FANto choose the following:

When ON, the fan will run continuously
when the AppStat schedule is ON (occupied).

When the AppStat schedule is OFF
(Unoccupied) the fan will run only when
there is a call for heating or cooling.

To set up staged cooling and heating do the
following:

1.

From the SYSTEM menu choose MIN OFF
TIME to enter the time a stage must remain
turned off before it can be turned on again.

2.

From the SYSTEM menu choose STAGE
DELAY to enter the time the first stage must
remain turned on before the second stage
can be turned on.

Revision G 57

BackEnterCncl

ECON ENABLE:

ENABLED

DISABLED

BackEnterCncl

MIN ECON DAMPER:

10%

BackEnterCncl

ECON ENABLE TEM:

60 °F

BackEnterCncl

MIN DAT:

55 °F

DelEnterCncl

RV VLV PLRTY:

ACTIVE HEATING

ACTIVE COOLING

DelEnterCncl

AUX HEAT:

Comp Lockout
3rd Stage

None

Section 4: Commissioning functions KMC Controls, Inc.

Set up heat pump unit system options (continued)

Procedure Steps Display

7 Enable the

economizer.
(Optional feature)

The economizer feature is an option and not
available on all models.

To set up the economizer do the following:

1.

From the SYSTEM menu choose ECON
ENABLE to enable the economizer
application.

2.

From the SYSTEM menu choose MIN ECON
DAMPER to set the minimum position for
the economizer damper.

3.

From the SYSTEM menu choose ECON
ENABLE TEM. Enter the value that the
outside air temperature must fall below
before the economizer damper can open.

4.

From the SYSTEM menu choose MIN DAT.
Enter the minimum discharge air
temperature that will be allowed during
cooling when the economizer is enabled.

8 Set the reversing

9 Set up auxiliary heat.

58 Revision G

valve polarity.

(Optional feature)

From the SYSTEM menu choose REV VLV
PLRTY. Select one of the polarity settings.

Active Heating—The O/B output terminal is
active on a call for heating.

Active Cooling—The O/B output terminal is
active on a call for cooling.

From the SYSTEM menu choose AUX HEAT.

Comp Lockout—The AppStat will enable
auxiliary heat only when the compressors are
locked out because of low outside air
temperature.

3rd Stage—The AppStat uses the auxiliary
heat as a third stage of heating.

None—No auxiliary heat is enabled.

DelEnterCncl

AUX HT LOCKOUT:

60 °F

DelEnterCncl

COMP LOCK TEMP:

25 °F

BackEnterCncl

DEHUM ENABLE:

ENABLE

DISABLE

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Set up heat pump unit system options (continued)

Procedure Steps Display

10 Set the lockout

temperature for
auxiliary heat.

11 Set the compressor

low temperature
lockout.

12 Enable

dehumidification.
(Optional feature)

From the SYSTEM menu choose AUX HT
LOCKOUT to set the minimum outside air
temperature for auxiliary heat lockout. Auxiliary
heat will not operate above this temperature.

From the SYSTEM menu choose COMP LOCK
TEMP to set the minimum outside air
temperature for compressor operation.
Compressors will not operate below this
temperature.

From the SYSTEM menu choose DEHUM
ENABLE to enable or disable dehumidification.
Dehumidification is only available on models
with a humidity sensor and auxiliary heat is
enabled.

Revision G 59

F

°

70

AUTO AUTO

MAIN
SETPOINT
SCHEDULE
SYSTEM
COMM

ADVANCED

BackEnterExit

ADVANCED

RESTORE APP

LOOPS
PASSWORDS
CALIBRATION
DISPLAY
KEY LOCKOUT

BackEnterExit

Section 4: Commissioning functions KMC Controls, Inc.

Advanced options

Use the advanced options to set up the following items.

Choosing an application and units of measure.

Adjusting the PID loops

Changing passwords

Calibrating inputs

Setting the display blanking

Modifying access to users with Password 1.

Setting the advance options requires entering Password 2 which is described
in the topic Enter the commissioning mode on page 40.

Choosing advance options

Procedure Steps Display

1.

13 Starting display.

Start at the temperature display.

2.

Enter Password 2. The display changes to the
MAIN menu display.

14 Choose the

ADVANCED
menu.

1.

From the MAIN menu , press either the or

button to select ADVANCED.

2.

Press Enter. The ADVANCED menu opens.

3.

Choose any of the following functions.

RESTORE APP

LOOPS

PASSWORDS

CALIBRATION

DISPLAY

KEY LOCKOUT

60 Revision G

RESTORE APP

2P FCU-METRIC
4P FCU-METRIC
2P FCU-ENGLISH
4P FCU-ENGLISH

BackEnterCncl

RESTORE APP

RTU-METRIC
RTU-ENGLISH

BackEnterCncl

RESTORE APP

HPU-METRIC
HPU-ENGLISH

BackEnterCncl

LOOPS

COOL PROP

COOL INTG
HEAT PROP
HEAT INTG

BackEnterExit

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Choosing advance options (continued)

Procedure Steps Display

15 Reset the

application and
choose units of
measure.

16 Adjust the PID

loops.

Choose RESTORE APP from the ADVANCED
menu to reset the AppStat to the original
configuration and settings. Use it also to change
the AppStat application program and the units of
measure to display. There are two versions of
each application program in every AppStat.

The Metric version displays temperature in
Celsius and uses metric values for units of
measure.

The English version displays temperature in
Fahrenheit and uses English values for units
of measure.

Note: Choosing an application will reset the

AppStat.

Choose LOOPS from the ADVANCED menu to
adjust the values for the cooling or heating PID
loops. Only the proportional and integral
properties can be changed from the display.

The proportional default is 2° F.

The integral default is zero (0).

Revision G 61

PASSWORDS

PASSWORD1

PASSWORD2

BackEnterExit

PASSWORD1:

0 0 0 0

DelEnterCncl

CALIBRATION

CAL INTERNAL

CAL EXTERNAL

BackEnterExit

CAL INTERNAL:

0.0

BackEnterCncl

Section 4: Commissioning functions KMC Controls, Inc.

Choosing advance options (continued)

Procedure Steps Display

17 Enter or change

passwords.

18 Calibrate the

inputs.

Choose PASSWORDS from the ADVANCED
menu to set either Password 1 or Password 2.

Password 1 is for a facility user and limits
changes to active setpoints, fan operation,
occupancy, and heating and cooling modes.

Password 2 is for a controls technician to set
up and commission the AppStat.

Note: Entering four zeros (0000) removes the

password. The AppStat is supplied without
passwords.

1.

From the PASSWORD1 or PASSWORD2 menu
press either the or buttons to change the
first digit of the password.

2.

Press the Enter button to select the next digit.
Repeat for all four digits.

3.

When the Enter button is pressed for the last
digit, the new password is saved and the
display advances.

Choose CALIBRATION from the ADVANCED
menu to calibrated an input. The AppStat
includes two calibration entries; one for the
internal temperature sensor and one for the
optional remote temperature sensor connected to
the RS terminal.

62 Revision G

Enter a calibration factor to adjust either input
for sensor inaccuracies.

For a low input reading enter a positive
correction value.

For a high input reading enter a negative
correction value.

DISPLAY
BLANKING

DIM LEVEL

BackEnterExit

BLANKING

ANALOG CLOCK

BACKLIGHT OFF
NONE

DelEnterCncl

DIM LEVEL:

50%

DelEnterCncl

KEY LOCKOUT:

MODE/SETPOINT

MODE
NONE

DelEnterCncl

Installation, Operation, and Application Guide for AppStat Section 4: Commissioning functions

Choosing advance options (continued)

Procedure Steps Display

19 Set the display

blanking.

20 User lockout

buttons.

Choose DISPLAY from the ADVANCED menu to
set the display appearance after the last button is
pushed.

BLANKING—Choose one of the blanking
options.

l CLOCK—An analog clock replaces the

temperature and mode icons.

l BACKLIGHT OFF—The display

brightness changes to the level set by
DIM LEVEL after the last button
interaction.

l NONE—The temperature and mode icons

always remain visible.

DIM LEVEL—Sets the level of brightness of
the display back light if BACKLIGHT OFF is
the selected blanking option.

Choose KEY LOCKOUT from the ADVANCED
menu to limit accessibility to users with
Password 1, the user password.

MODE/SETPOINT—Users with Password 1
cannot change any value or mode.

MODE—Users with Password 1 cannot
change the heating/cooling, fan, or occupancy
modes.

NONE—Users with Password 1 have full
access to active setpoints, heating/cooling, fan,
and occupancy modes.

Revision G 63

Section 4: Commissioning functions KMC Controls, Inc.

64 Revision G

Installation, Operation, and Application Guide for AppStat

Sec tion 5: Sequenc e s o f o pe r atio n

Topics in this section cover the sequences of operation for the AppStat.
These are advanced topics for control's technicians and engineers.

This section covers the following sequences of operation.

Room temperature setpoints on page 66

Occupancy, motion sensing, and standby on page 67

Automatic cooling and heating changeover on page 68

Scheduling occupancy on page 68

Dehumidification sequence on page 68

Fan status on page 68

Display blanking and backlight on page 69

Temperature sensing inputs on page 69

PID control loops on page 70

Valve operation for fan coil units on page 70

Electric heat for fan coil units on page 72

Fan operation for fan coil units on page 72

Modulating cooling and heating for Roof Top Units on page 73

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

Fan control for roof top and heat pump units on page 74

Economizer cooling for roof top and heat pump units on page 75

Heat pump unit specific functions on page 75

Revision G 65

Section 5: Sequences of operation KMC Controls, Inc.

Room temperature setpoints

There are four temperature setpoints each for heating and cooling for a total
of eight setpoints.

Active cooling

Occupied cooling

Unoccupied cooling

Standby cooling

Active heating

Occupied heating

Unoccupied heating

Standby heating

Types of setpoints

The AppStat uses any of the following setpoints based on a user entered
setpoint or the state of occupancy and standby which is described in the topic

Occupancy, motion sensing, and standby on page 67.

Active setpoint—The active setpoint is the current setpoint. The active

setpoint is determined by the following.

If the space is occupied, the controller uses the occupied setpoint as the
active setpoint.

If the space is unoccupied the controller uses the unoccupied setpoint as
the active setpoint.

If controller occupancy is in standby, the controller calculates the
standby setpoint.

A user with Password 1 can enter an active setpoint from the display.
This change is for a limited time or until the next time the space status
changes from either unoccupied or standby to occupied.

Occupied setpoint—A temperature setpoint entered by the controls

technician during controller setup and system commissioning. This is the
setpoint used when the system is occupied which is usually controlled by the
schedule in the controller.

Unoccupied setpoint—A temperature setpoint entered by the controls

technician during controller setup and system commissioning. This is the
setpoint used when the system is unoccupied which is usually controlled by
the schedule in the controller.

Standby setpoint—The standby setpoint is used when the controller is in the

standby state. It is a value calculated from the occupied setpoint and the value
of Standby Offset. The standby offset value is entered by the controls
technician during controller setup and system commissioning. See the topic

Occupancy, motion sensing, and standby on page 67.

66 Revision G

Installation, Operation, and Application Guide for AppStat Section 5: Sequences of operation

Setpoint limits

The programming in the AppStat will limit the setpoint entry so that no
heating setpoint is set higher than its corresponding cooling setpoint.

If a user is adjusting a setpoint and it falls within the range set by the value of
Minimum Setpoint Differential, the corresponding setpoint will be changed to
maintain the differential. For example, the Minimum Setpoint Differential is
4°F and the Occupied Heating setpoint is 70°F. If the user lowers the
Occupied Cooling setpoint to 71°F, the controller recalculates the Occupied
Heating setpoint and changes it to 67°F.

Occupancy, motion sensing, and standby

The AppStat is designed to operate as a stand-alone controller and can
determine occupancy based on its internal occupancy schedule and, on models
with motion sensors, motion in the space. The AppStat can be in any one of
the following occupancy states.

Occupied

Unoccupied

Standby

The controller chooses which setpoint to use based on the occupancy and
standby states. See the topic Room temperature setpoints on page 66 for the
sequence on determining setpoints.

The occupancy and standby states can also be commanded by another
BACnet device or an operator workstation connected to the building
automation network. See the topic BACnet objects on page 114 for details on
BACnet value object configuration.

Occupied—For controllers without a motion sensor, the AppStat starts in the

occupied state. If the internal schedule is enabled, the state of the schedule is
set to either occupied or unoccupied as the initial state. See the topic Scheduling

occupancy on page 68.

Unoccupied—The controller changes to the Unoccupied state only if the

internal occupancy schedule is enabled and if the schedule is inactive.

Standby—In units with a motion sensor, the controller starts in standby and

changes to occupied only after detecting motion in the space. The controller
will change from occupied to standby after a lack of motion for the period
specified by the variable Standby Time.

Revision G 67

Section 5: Sequences of operation KMC Controls, Inc.

Automatic cooling and heating changeover

Scheduling occupancy

The AppStat can be set to automatically change between the heating and
cooling modes.

If the space temperature rises above the active cooling setpoint, the
mode is set to cooling.

If the space temperature falls below the heating setpoint, the mode is set
to heating.

For fan coil models, the changeover is immediate. For other models, the
changeover does not take place until the time set by Fan Off Delay expires.

The schedule in the controller is a standard BACnet schedule object. It can be
changed from the display by a technician with Password2 or a BACnet
operator workstation.

The internal occupancy schedule changes the AppStat between the occupied
(Active) and unoccupied (inactive) states. If the AppStat includes a motion
sensor, the motion sensor may change the AppStat between occupied and
standby based on motion detected in the space.

See also the topic Occupancy, motion sensing, and standby on page 67.

Dehumidification sequence

Fan status

Dehumidification control is available only on models with internal humidity
sensors. Dehumidification is not available for fan coil units configured for
two-pipe operation.

The AppStat can run the dehumidification sequence only if the heating and
cooling modes are set to automatic. The dehumidification sequence can then
start if the space humidity rises above the value of Dehumidification Setpoint.
Dehumidification stops when the space humidity drops to a value below the
Dehumidification Setpoint minus the value of Dehumidification Differential.
The dehumidification setpoint and differential are both adjustable from the
user interface.

When Dehumidification is active, cooling output is activated to 100%. Heating
then reheats the discharge air to maintain the space temperature to the value
of Active Cooling setpoint.

The controller continuously runs the fan during dehumidification regardless
of other fan settings.

Fan status is a second function of the Discharge Air Temperature (DAT)
input. The function requires a normally closed fan status switch connected
across the DAT input terminals. When the fan is started at any speed, the
AppStat program waits 10 seconds for the Fan Status switch (FST) to open. If
the status switch does not open within 10 seconds after the fan is commanded
to start, all heating and cooling is commanded to stop heating and cooling at

68 Revision G

Installation, Operation, and Application Guide for AppStat Section 5: Sequences of operation

BACnet priority 5. The fan output remains enabled until the fan status switch
opens. The state of fan status is stored in a binary variable. See the topic Value

objects on page 117 for variable object details.

When the fan is functioning normally and the fan status switch is open the
DAT input is normal temperature sensing input. When the fan status switch is
closed, the value for the DAT input is greater than 260. See the topic

Temperature sensing inputs on page 69.

Display blanking and backlight

Temperature sensing inputs

The AppStat display and backlight can be set to take any of the following
actions one minute after the last button is pushed.

Display an analog clock instead of the temperature display.

Dim the display to a preset level.

Remain unchanged.

When the display is dimmed or the clock is visible, the display returns to
normal when any button is pushed. See the topic Advanced options on page 60
for the procedure to change the display.

The AppStat includes inputs for sensing space, discharge air, fan coil unit
supply water, and outside air temperature.

Space temperature sensing

All models of AppStat include an internal temperature sensor for measuring
space temperature. For remote temperature sensing, an external, 10,000 ohm,
TypeIIthermistor sensor can be connected to terminals RS. If the AppStat
detects that a remote sensor is connected, the internal sensor is not used for
determining space temperature. See the topics Input objects on page 114 and

Value objects on page 117 for object details.

Outside air temperature sensing

The outside air temperature (OAT) input is a required input for compressor
lockout and economizer applications and is an optional input for others. The
AppStat is configured for a TypeIIIthermistor sensor to monitor outside air
temperature. The outside air temperature is also stored in an analog value
object. See the topics Input objects on page 114 and Value objects on page 117
for object details.

Water temperature sensor

The Water Temperature Sensor input (WST) is a required sensor for two-pipe
fan coil units and is optional for other fan coil applications. The AppStat is
configured for a TypeIIIthermistor sensor to monitor water temperature.
The water temperature can be monitored as an analog input and is also

Revision G 69

Section 5: Sequences of operation KMC Controls, Inc.

stored in an analog value object. See the topics Input objects on page 114 and

Value objects on page 117 for object details.

Discharge air temperature sensor

The Discharge Air Temperature (DAT) input is a required input for
economizer applications and is an option for other applications. The AppStat
is configured for a TypeIIIthermistor sensor for DAT applications. Discharge
air temperature can be monitored as an analog input and is also stored in an
analog value object. See the topics Input objects on page 114 and Value objects

on page 117 for object details.

The DAT input is a dual function input. It is used also as the input for the fan
status switch. See the topic Fan status on page 68 for details.

PID control loops

A PID control loop calculates an error value from the difference between the
measured room temperature and the active setpoint. The error value is
expressed as a percentage and is typically used in a BAS controller to control
the state of an output. When the difference between the setpoint and room
temperature is large, the error is large. As the system reduces the difference
between the setpoint and space temperature, the error becomes smaller. In a
simple example, if the output of the PID loop that is controlling a modulating
valve is 50% the valve would be opened half way; if the output of the loop is
100% the valve position is fully open.

The AppStat uses up to four PID loops.

The heating and cooling PID loops are implemented in all models.

The discharge air loop controls the position of the economizer damper.
For this loop the setpoint is the measured temperature of the air that is
discharged by a roof top or heat pump unit. See Economizer cooling for

roof top and heat pump units on page 75.

The reheat loop is used only for heating outputs unit during
dehumidification. See the sequence description Heat pump unit specific

functions on page 75.

The PID loops in the AppStat are standard BACnet objects.

Valve operation for fan coil units

Hot and chilled water valves are used for heating and cooling in the fan coil
unit versions of the AppStat. The fan coil two-pipe programming includes also
a method to determine supply water temperature.

On/Off valves

On a call for cooling or heating, the valve will open once the PID loop
controlling the valve has reached 50%. The valve will close once the loop has

70 Revision G

Installation, Operation, and Application Guide for AppStat Section 5: Sequences of operation

fallen to 5%. The controller programming supports both normal and reverse
action valves which can be set from the user interface.

Normal—The valve is closed when the output is inactive and open when
the output is active.

Reverse—The valve is closed when the output is active and open when
the output is inactive.

Modulating valves

On a call for cooling or heating, a modulating valve will modulate from 0 to
100% over the first half (0 to 50%) of the PID loop output controlling the
valve. The AppStat supports both normal and reverse action valves which can
be set from the user interface.

Normal—The valve is fully closed when the output signal is 0 volts and
fully open when the output is 10 volts DC.

Reverse—The valve is fully closed when the output signal is 10 volts and
fully open when the output is 0 volts DC.

Two-pipe water supply temperature evaluation

For two-pipe fan coil units, the AppStat uses the water supply temperature
sensor—input WST–to determine if chilled or hot water is being supplied to
the unit. The water type is determined by comparing the value of the water
temperature sensor input to the room temperature. The AppStat
programming then determines that the water temperature is one of the
following.

Chilled—the water temperature is 10°F below room temperature.

Hot—the water temperature is 10°F above room temperature.

None—the water temperature is within 7°F of room temperature.

If the water temperature is evaluated as None, the AppStat runs the water
evaluation program every six hours. During a water evaluation, the AppStat
opens the valve until a water type is determined or for five minutes,
whichever is reached first. If a water evaluation is not being performed, the
valve remains closed.

The supply water type is stored in multistate variable Water Available.

Revision G 71

Section 5: Sequences of operation KMC Controls, Inc.

Electric heat for fan coil units

Fan operation for fan coil units

For AppStat fan coil models that support both on/off and modulating valves,
electric heat can be added to two-pipe systems. Typically this heat is a duct or
baseboard resistance heater controlled by a relay.

When the supply water type is chilled water and there is a call for heat, the
AppStat controls the heating element through output terminal BO5. The
output turns on when the heating loop is greater than 99%. The output is
turned off when the loop falls to 5%. If the supply water type is hot water,
only the water valve output is used to satisfy a call for heat.

The AppStat supports both modulating fans and fans with one, two, or three
speeds. Speed for either type of fan is determined by the PID loop that is
currently controlling the heating or cooling. Fan speed control is set up from
the user interface by a user with Password 2. See the topic Set fan coil unit

system options on page 50.

One, two, and three speed fans

For one, two, and three speed fans, the AppStat controls the fan speed with
terminals FAN-L, FAN-M, and FAN-H.

Single speed fans use terminal FAN-L only

Two speed fans are controlled with terminals FAN-Land FAN-H

Thee speed fans use terminals FAN-L, FAN-M, and FAN-H

The fan output terminals are energized as the cooling or heating loop varies
from 0-100%. Terminal activation is shown in the following table.

Table 5–1 Fan speed

Fan L terminal Fan M terminal Fan H terminal

Fan

On Off On Off On Off

speed

One Active valve 5% n/a n/a n/a n/a

Two Active valve 5% n/a n/a 95% 80%

Three Active valve 5% 65% 50% 95% 80%

Modulating fans

The fan starts a modulation fan on a call for either heating or cooling. The fan
runs at the minimum fan speed until the heating or cooling loop reaches 50%.
From 50% to 100% of the loop, the fan speed ramps from the minimum speed
to maximum speed. The minimum and maximum fan speeds are set from the

72 Revision G

Installation, Operation, and Application Guide for AppStat Section 5: Sequences of operation

user interface during system setup. See the topic Set fan coil unit system

options on page 50.

Automatic fan control

A user with Password 1 can set the AppStat controlled fan to either run
continuously or to start automatically on a call for cooling or heating.

Auto—When Auto is selected, the fan runs only when there is a call for

cooling or heating. It continues to run after the call for cooling or heating for
the period set by the fan delay timer.

On—The fan will run continuously regardless of the heat/cool modes or

occupied/standby states.

Low, Medium, High—For systems with three-speed fans, the user has the

choice of low, medium or high speed as the continuous running speed for the
fan.

Modulating cooling and heating for Roof Top Units

Modulating cooling and heating is used in AppStat controlled systems with
modulating valves and chilled or hot water coils. A single modulating valve
can be used with staged cooling or heating.

Cooling

Modulating cooling does not start until the cooling loop reaches 100%. Once
the loop reaches 100%, the analog cooling output modulates over 10 volts DC
as the cooling loop changes from 0 to 100%. When the cooling loop returns to
0%, cooling stops until the loop again reaches 100%.

If the economizer is enabled, cooling will not start modulating until the
economizer damper is fully open.

Heating

Modulating heating does not start until the heating loop reaches 100%. Once
the loop reaches 100%, the analog heating output modulates over 10 volts DC
as the heating loop changes from 0 to 100%. When the heating loop returns to
0%, heating stops until the loop reaches 100% again.

Valve action

The AppStat supports both normal and reverse valve action that can be set
from the user interface.

Normal—The valve is fully closed when the output signal is 0 volts and
fully open when the output is 10 volts DC.

Reverse—The valve is fully closed when the output signal is 10 volts and
fully open when the output is 0 volts DC.

Revision G 73

Section 5: Sequences of operation KMC Controls, Inc.

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

Staged heating and cooling is used for applications other than chilled or hot
water systems. Typically the AppStat controls gas heat, electric heat, or direct
expansion (DX) cooling with staged heating and cooling. Staged cooling or
heating can be mixed with a modulating valve for cooling or heating.

Staged cooling

As the demand for cooling increases, the AppStat starts the first stage of
cooling when the cooling PID loop rises above 95% and the first stage of
cooling has been turned off for at least the time set by the value of
MINIMUM OFF TIME. The second stage of cooling is turned on when the
cooling loop rises above 99% and the first stage has been turned on for the
period set by STAGE DELAY and the second stage has been turned off for at
least as long as the value of MINIMUM OFF TIME.

As the demand for cooling is satisfied, the second stage is turned off when
the cooling PID loop drops below 50%. This first stage is turned off when the
cooling loop drops below 5%.

Staged heating

As the demand for heating increases, the AppStat starts the first stage of
heating when the heating PID loop rises above 95%. The second stage of
heatingis turned on when the heating loop rises above 99% and the first stage
has been turned on for period set by STAGE DELAY.

Fan control for roof top and heat pump units

As the demand for heating is satisfied, the second stage is turned off when
the heating PID loop drops below 50%. This first stage is turned off when the
heating loop drops below 5%.

A user with Password 1 can set the AppStat controlled fan to either run
continuously or to start automatically on a call for cooling or heating. See the
topic Setting the operating modes on page 36 to set the fan configuration.

On—The fan will run continuously regardless of the heat/cool modes or

occupied/standby states.

Auto—When Off is selected, the fan runs only when there is a call for heating

or cooling. It continues to run for the period set by the fan delay timer after
the call for heating or cooling.

74 Revision G

Installation, Operation, and Application Guide for AppStat Section 5: Sequences of operation

Economizer cooling for roof top and heat pump units

Note: The optional economizer can be enabled only if outside air temperature and

Some models of the AppStat include programming for an economizer. This
programing controls an economizer outside air damper connected to the
output terminal (ECON).

discharge air temperature sensors are connected to the AppStat.

The optional economizer mode is enabled for cooling when the outside air
temperature(OAT) is 2° F below the value of the limit set by Economizer
Enable Temperature and disabled if the OAT is 2° F above the value of
Economizer Enable Temperature.

Once enabled, the economizer outside air damper opens to the larger value of
either the minimum damper position limit (Minimum Econ Damper) or the
Discharge Air Temperature loop. The Discharge Air Temperature PID loop
modulates from 0% to 100% as the Discharge Air Temperature rises above the
Discharge Air Temperature setpoint. The Discharge Air Temperature setpoint
resets between room temperature and the limit for minimum discharge air
temperature as the cooling loop varies between 0 and 50%. If the Discharge
Air Temperature decreases below 55° F, the Outside Air Damper returns to
the minimum damper position.

Heat pump unit specific functions

The fan and staging sequences for heat pump units are similar to the roof top
unit fan and staging sequences. See the topics Staged heating and cooling for for

roof top and heat pump units on page 74 and Fan control for roof top and heat
pump units on page 74.

Reversing valve action

The AppStat reversing valve output, terminal O/B, is energized on a call for
cooling (‘O’ function). The action can be changed from the user interface to
be active on a call for heating (‘B’ function). The ‘O’ function is the default.

Auxiliary or emergency heat action

The heat pump unit AUX/E output is for auxiliary or emergency heat.
Operation can be configured for one of three modes.

Compressor lockout —The AUX/E output terminal is active only on a call

for heating when the compressors are locked out. The compressors are locked
out when the outside air temperature drops below the value of the
Compressor OAT Low Limit. The lockout is cleared when the outside air
temperature rises 2° F above the value of Compressor OAT Low Limit.

Third stage—The AUX/E output functions as the output for a third stage of

heat.

Revision G 75

Section 5: Sequences of operation KMC Controls, Inc.

None—This function is a manual operation that can only be turned on from

the user interface. When emergency heat is turned on, the AUX/E output is
used to maintain the active heating setpoint and both compressor outputs are
locked-out.

76 Revision G

Installation, Operation, and Application Guide for AppStat

Sec tion 6: A pplic ati o n draw ings

This section covers the drawings, materials, and instructions for specific
AppStat applications.

Each AppStat model is designed for a specific application. The following
topics are for control technicians and engineers that will plan and install
AppStat controllers for the following applications.

Fan Coil Unit applications on page 78

Roof Top Unit applications on page 98

Heat Pump Unit applications on page 108

Revision G 77

Section 6: Application drawings KMC Controls, Inc.

Fan Coil Unit applications

This section covers applications for fan coil units. For other applications see

Roof Top Unit applications on page 98 or Heat Pump Unit applications on page

108.

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

This application applies to models BAC-4001CW0001, BAC-4021CW0001,
BAC-4201CW0001, and BAC-4221CW0001.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC.

Fan outputs are for 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–1 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Controls transformer

78 Revision G

H M L

STE-1405

FAN

24 VAC
Class-2

STE-6011W10

or equivalent

(optional)

FST N.C Fan Status

CSE-1102

Controls

transformer

DAT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–1 Wiring details: Four-pipe FCU with on/off valves

Revision G 79

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4002CW0001, BAC-4022CW0001,
BAC-4202CW0001, and BAC-4222CW0001.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC with a 0–10 Volt DC control signal.

Fan outputs are for 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–2 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Controls transformer

80 Revision G

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

H M L

FAN

STE-1405

24 VAC
Class-2

0-10

VDC

0-10
VDC

FSTN.C Fan Status

CSE-1102

Controls

transformer

DAT

STE-6011W10

or equivalent

(optional)

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–2 Wiring details: Four pipe FCU with three-speed fan and
modulating valves

Revision G 81

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4007CW0001, BAC-4027CW0001,
BAC-4207CW0001, and BAC-4227CW0001.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC.

Fan starting input is 24 volt AC pilot duty.

Fan speed input is 0-10 volts DC.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–3 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Controls transformer

82 Revision G

FAN

24 VAC
Class-2

FST

Controls

transformer

N.C Fan Status
CSE-1102

STE-1405

STE-6011W10

or equivalent

(optional)

DAT

SPD SRT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–3 Wiring details: Four-pipe FCU with modulating fan and on/off
valves

Revision G 83

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4008CW0001, BAC-4028CW0001,
BAC-4208CW0001, and BAC-4228CW0001.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC.

Fan start output is for a 24 volt AC pilot duty input.

Fan speed input is 0-10 volts DC.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–4 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

84 Revision G

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

24 VAC
Class-2

0-10

VDC

0-10
VDC

FAN

FST

Controls

transformer

N.C Fan Status

CSE-1102

STE-1405DAT

STE-6011W10

or equivalent

(optional)

SPD SRT

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–4 Wiring details: Four-pipe FCU with modulating fan and
modulating valves

Revision G 85

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4001CW0001, BAC-4201CW0001,
BAC-4021CW0001, and BAC-4221CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

The valve is 24 Volt AC.

Fan outputs are for 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–5 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

86 Revision G

H M L

FAN

24 VAC
Class-2

FST N.C Fan Status

CSE-1102

STE-1455

Controls

transformer

STE-1405DAT

WST

STE-6011W10

or equivalent

(optional)

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–5 Wiring details: Two-pipe FCU with three-speed fan and on/off
valves

Revision G 87

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4002CW0001, BAC-4022CW0001,
BAC-4202CW0001, and BAC-4222CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC. with a 0-10 Volt DC control signal.

Fan outputs are for 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–6 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

88 Revision G

H M L

FAN

24 VAC
Class-2

0-10
VDC

FST N.C Fan Status

CSE-1102

Controls

transformer

STE-1455

STE-1405

DAT

WST

STE-6011W10

or equivalent

(optional)

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–6 Wiring details: Two-pipe FCU with three-speed fan and
modulating valve

Revision G 89

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4007CW0001, BAC-4027CW0001,
BAC-4207CW0001, and BAC-4227CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC.

Fan start output (FAN-L) is for a 24 volt AC pilot duty input.

Fan speed output (AO8) is 0-10 volts DC.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–7 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

90 Revision G

FAN

24 VAC
Class-2

FSTN.C Fan Status

CSE-1102

Controls

transformer

STE-1455

STE-1405

DAT

WST

STE-6011W10

or equivalent

(optional)

SPD SRT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–7 Wiring details: Two-pipe FCU with modulating fan and on/off
valve

Revision G 91

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4008CW0001, BAC-4028CW0001,
BAC-4208CW0001, and BAC-4228CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC.

Fan start output (FAN-L) is for a 24 volt AC pilot duty input.

Fan speed output (AO8) is 0-10 volts DC.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–8 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

92 Revision G

FAN

24 VAC
Class-2

0-10
VDC

FST

N.C Fan Status

CSE-1102

Controls

transformer

STE-1455

STE-1405

DAT

WST

STE-6011W10

or equivalent

(optional)

SPD SRT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–8 Wiring details: Two-pipe FCU with modulating fan and
modulating valve

Revision G 93

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4003CW0001, BAC-4023CW0001,
BAC-4203CW0001, and BAC-4223CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC. with a 0-10 Volt DC control signal.

Fan and heat outputs are for 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–9 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

94 Revision G

H M L

FAN

24 VAC
Class-2

0-10

VDC

FST N.C Fan Status

CSE-1102

Controls

transformer

STE-1455

STE-1405

DAT

WST

STE-6011W10

or equivalent

(optional)

24 VAC

Relay

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–9 Wiring details: Two-pipe FCU with three-speed fan, modulating
valve, and electric heat

Revision G 95

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4003CW0001, BAC-4023CW0001,
BAC-4203CW0001, and BAC-4223CW0001.

The water temperature sensor (WST) is required for two-pipe units.

Fan status switch (FST) and discharge air temperature sensor (DAT) are
optional. They are typically used only when the AppStat is connected to
a network.

The remote temperature sensor (RS) is optional.

Valves are 24 Volt AC. with a 0-10 Volt DC control signal.

Heat output is for a 24 volt AC pilot duty input.

Fan starting input is 24 volt AC pilot duty.

Fan speed input is 0-10 volts DC.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–10 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1455 Strap-on water temperature sensor, 10 kΩ Type

III

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Water temperature sensor

Controls transformer

96 Revision G

FAN

24 VAC
Class-2

0-10

VDC

FST N.C Fan Status

CSE-1102

Controls

transformer

STE-1455

STE-1405

DAT

WST

STE-6011W10

or equivalent

(optional)

24 VAC

Relay

SPD SRT

MS/TP

+B

A

RS

WST

GND

DAT

COM

FAN-L

FAN-M

FAN-H

R

BO4

BO5

GND

AO6

AO8

AO7

24VAC

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–10 Wiring details: Two-pipe FCU with modulating fan,
modulating valve, and electric heat

Revision G 97

Section 6: Application drawings KMC Controls, Inc.

Roof Top Unit applications

This section covers applications for roof top units. For other applications see

Fan Coil Unit applications on page 78 and Heat Pump Unit applications on
page 108.

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

This application applies to models BAC-4221CW0002, BAC-4021CW0002,
BAC-4201CW0002, and BAC-4001CW0002.

Fan status switch (FST) and discarge air temperature (DAT) and outdoor
air temperature (OAT) sensors are optional. They are typically used only
when the AppStat is connected to a network.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

For single stage heating, delete connection W2.

For single stage cooling, delete connection Y2.

Connect outputs to 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–11 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1451 Outdoor air temperature sensor, 10 kΩ Type III Outdoor air temperature

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Controls transformer

98 Revision G

MS/TP

+B

A

RS

OAT

GND

DAT

ECON

G

Y1

Y2

RC

W1

W2
RH

AO6

AO7

COM

24VAC

FAN

24 VAC
Class-2

STE-1451

FST

W2 W1 GY2 Y1CR

N.C Fan Status
CSE-1102

STE-1405

STE-6011W10

or equivalent

(optional)

DAT

OAT

Controls

transformer

GAS

GAS

DX DX

Installation, Operation, and Application Guide for AppStat Section 6: Application drawings

Illustration 6–11 Wiring details: RTU two-stage gas heat and two-stage DX
cooling

Revision G 99

Section 6: Application drawings KMC Controls, Inc.

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

This application applies to models BAC-4223CW0002, BAC-4023CW0002,
BAC-4203CW0002, and BAC-4003CW0002

Fan status switch (FST) is optional. Typically it is used only when the
AppStat is connected to a network.

Discharge air temperature (DAT) and outdoor air temperature (OAT)
sensors are required for economizer operation.

For dehumidification, the AppStat must include a humidity sensor.

The remote temperature sensor (RS) is optional.

For single stage heating, do not connect W2.

For single stage cooling, do not connect Y2.

Connect outputs to 24 volt AC pilot duty inputs.

For additional details on connecting sensors, see Connecting inputs on

page 20.

For additional detail on connecting the fan and valves, see Connecting

outputs on page 24.

Table 6–12 Materials list

KMC Part

Description Function

No.

CSE-1102 Differential Pressure Switch, Barb Fittings Fan status switch

STE-1405 Duct temperature sensor, 10 kΩ Type III Discharge air temperature

STE-1451 Outdoor air temperature sensor, 10 kΩ Type III Outdoor air temperature

STE-6011W10 Temperature sensor, 10 kΩ Type II Remote space temperature

XEE-6111-040
XEE-6112-040
XEE-6311-075

Single-hub 120 volt power transformer
Dual-hub 120 volt power transformer
120/240/277/480VAC, 24 VAC, 75 VA transformer

Controls transformer

100 Revision G