FloAire DDC User Manual

Direct Digital Controls (DDC)

Installation, Operation, and Maintenance Manual

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RECEIVING AND INSPECTION

damage free.

INSTALLATION & PROGRAMMING WARNING!!

Upon receiving unit, check for any interior and exterior damage, and if found, report it
immediately to the carrier. Also check that all accessory items are accounted for and are

Direct Digital Controls should only be set up by trained Controls Contractors or similarly
trained personnel. For proper operation, a thorough understanding of the total system design
is required. If you are unsure of the proper setup and operation of this unit, please contact
your onsite Controls Contractor.

. This document is the property of the owner of this equipment and is required

for future maintenance. Leave this document with the owner when installation or service is complete.

A0020659

May 2014 Rev. 3

TABLE OF CONTENTS

WARRANTY .................................................................................................................................................. 3

INSTALLATION ............................................................................................................................................. 4

PREREQUISITES ..................................................................................................................................... 4

SITE PREPARATION ........................................................................................................................... 4

OPTIONAL SENSOR CONNECTIONS ............................................................................................... 4

PHYSICAL NETWORK CONNECTION ............................................................................................... 4

DDC PROTOCOL SELECTION ........................................................................................................... 5

SETTING THE CONTROLLER ADDRESS ......................................................................................... 5

CONTROLS CONNECTION ................................................................................................................ 6

SOFTWARE SETUP & NETWORK VARIABLES .................................................................................... 7

LIST OF ANALOG VARIABLES (AV):.................................................................................................. 7

LIST OF BINARY VARIABLES (BV): ................................................................................................. 13

NETWORK ALARM VARIABLES .......................................................................................................... 16

LOGIC MODIFICATION NOTES ............................................................................................................ 19

Start-Up and Maintenance Documentation ............................................................................................ 20

Job Information ................................................................................................................................... 20

Factory Service Department ............................................................................................................... 20

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WARRANTY

This equipment is warranted to be free from defects in materials and workmanship, under normal use and
service, for a period of 12 months from date of shipment. This warranty shall not apply if:

1. The equipment is not installed by a qualified installer per the MANUFACTURER’S installation
instructions shipped with the product,

2. The equipment is not installed in accordance with federal, state and local codes and regulations,

3. The equipment is misused or neglected,

4. The equipment is not operated within its published capacity,

5. The invoice is not paid within the terms of the sales agreement.

The MANUFACTURER shall not be liable for incidental and consequential losses and damages
potentially attributable to malfunctioning equipment. Should any part of the equipment prove to be
defective in material or workmanship within the 12-month warranty period, upon examination by the
MANUFACTURER, such part will be repaired or replaced by MANUFACTURER at no charge. The
BUYER shall pay all labor costs incurred in connection with such repair or replacement. Equipment shall
not be returned without MANUFACTURER’S prior authorization and all returned equipment shall be
shipped by the BUYER, freight prepaid to a destination determined by the MANUFACTURER.

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INSTALLATION

It is imperative that this unit is installed and operated with the designed airflow and electrical supply in
accordance with this manual. If there are any questions about any items, please call the service
department at 1-866-784-6900 for warranty and technical support issues.

PREREQUISITES

SITE PREPARATION

1. This manual assumes that the unit has been physically installed in its proper location.

2. All ductwork connections should be complete

3. All high voltage electrical connections need to be complete, and power should be available at the
unit breaker.

OPTIONAL SENSOR CONNECTIONS

1. If your unit was ordered with a duct mounted, field installed smoke detector; this will need to be
wired prior to startup. The smoke detector is attached at terminals S1 and GN, as per the
schematic.

PHYSICAL NETWORK CONNECTION

1. Depending on the communication method, the following steps will need to be taken to connect
the controller to the network.

2. For BACnet MS/TP, N2, and Modbus, a shielded twisted pair network connection needs to be
connected to the RS-485 port in the upper left hand corner of the controller. Please refer to the
connector shown in Figure 1.

Fig. 1

3. For LonWorks, connect to the standard LonWorks communication port located on the LonWorks
daughter board(Figure 3), mounted on the daughter board bracket above the controller.

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DDC PROTOCOL SELECTION

1.

The appropriate DDC controls protocol is factory set using dip switches on the DDC controller.
The four possible protocols are BACnet MS/TP, Metasys N2, Modbus, and LonWorks (LonTalk).
Confirm the dip switch setting prior to startup. A table showing the dip switch configurations
available is on the front label of the controller. Switches 1 and 2 control the BAUD rate. Switches
3 and 4 control the communication protocol. The factory BAUD rate 9600. Most LonWorks
systems use a different BAUD for connection (38.4K typical).

2.

NOTE: LonWorks protocol is only available with the optional LonWorks adapter card. If
ordered with this card, you will see a daughter circuit board mounted above the controller on a
daughter card bracket. The LonWorks card ( PN: LON-OC) is shown in Figure 3.

Fig. 2

Fig. 3

SETTING THE CONTROLLER ADDRESS

1. For each unit on the jobsite, there needs to be a specific address
set on the controller. If multiple units have the same address,
there will be communication problems in the field. The controller
has 2 rotary switches in the upper left side. The uppermost switch
is the “tens” digit and the lower switch is the “ones” digit. In the
example to the right the address is 25.

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2. Using the rotary switches, set the controllers address. The factory default is 03. The number
used is arbitrary, so long as it doesn’t conflict with other unit addresses on the network.

3. For N2 or Modbus connections, the address set on the rotary switches is the unit’s slave address.

4. If the unit was powered up for any reason during the rotary setting adjustment, a power cycle
needs to be performed to store the new address.

5. For LonWorks, the address is irrelevant, but must not be zero.

CONTROLS CONNECTION

1. The site specific method of communicating with the network should be powered on. This can be
a computer or alternatively a handheld or LCD DDC controls device such as the BACview.

2. Next provide power to the heater/controls unit by turning on the breaker. Confirm that the DDC
controller has flashing lights in the upper right hand corner of the unit. A solid “power LED”
indicates proper power supply and a blinking “run LED” indicates that the unit is functioning and
running the program as expected. See Figure 4.

FIG. 4

3. Confirm that the unit is visible on the network, either through the computer interface or handheld
unit, if equipped.

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