Andover Controls TCX 850 Installation Guide

Andover Controls Corporation i

TCX 850

Installation Guide

Downloaded from - http://www.guardianalarms.net

ii TCX 850 Installation Guide

Version F

Reproduction or d istribution forbi dden.

Copyright



1997 by Andover Controls.

Subject to change without notice.

Order No. 30-3001-173

Copyright



1997

Andover Controls Corporation

300 Brickstone Square

Andover, Massachusetts 01810

All Rights Reserved.

Published by the Engineering Departm ent at Andover Controls Corporation.

IMPORTANT NOTICE

This product is subject to change without notice. This document does not con-

stitute any warranty, express or implied. Andover Controls Corpor ation re-

serves the right to alte r cap ab ilities, performanc e, and pres e ntation of this

product at any time.

Andover Controls Corporation iii

Preface

The Andover Controls TCX 850 Installation Guide presents instru c-

tions for installing the TCX 850 on an Infinet network. It first presents

site preparation infor mation and then step-by-step ins ta llation

instructions.

iv TCX 850 Installation Guide

Andover Controls Corporation v

Contents

Setting Up the TCX 850 Controller and Infinet

Site/System Setup Requirements .............................................................2

Controller Dimensions and Weight ...............................................3

Power Requirements ......................................................................3

Cable Limitations . ..... .... ... ..... .. ..... .... ... ...... . ..... .. ..... .... ... ...... . ....... .. .3

Lightning Protection ......................................................................4

Building Ground Requirements ..................................................... 4

Inspecting the Ground ....................................................................5

Environmental Requirem en ts ....... ......... .......... ......... ......... .......... ..5

Output Equipment Requirements ..................................................5

Input Circuit Specifications ...........................................................6

Special Factors for Thermistors .....................................................6

Air Flow Sensor Requirements ......................................................8

Laying Out the Site Setup ..............................................................8

Installing the TCX 850 .............................................................................9

Unpacking ........... ......... .......... ......... ......... .......... ......... .......... .........9

Parts Requir ed ................ .......... ......... .......... ......... .......... ......... .......9

Mounting ............. ......... .......... ......... ......... .......... ......... .......... .........9

Connecting the Battery ................................................................11

Connecting the AC Power ...........................................................1 1

Wiring the Infinet to the TCX 850 ........................ ....... ....... ....... .1 5

Wiring the Infinet to the Infinity CX 9000 ..................................15

vi TCX 850 Installation Gu ide

Wiring the Inputs .........................................................................16

Connecting the Air Flow Sensor ..................................................2 0

Wiring the Outputs ......................................................................27

Wiring Tristate Output .................................................................27

Wiring Form A Outputs ...............................................................27

Connecting Modules to the Expansion Port ................................28

Powering Up the TCX 850 .....................................................................2 9

Reset Button ............ .......... ......... .......... ......... .......... ......... ......... ...30

Setting the Air Flow Potentiometers ............................................30

Completing the Installation ..........................................................3 0

Connecting the Andover Controls Service Tool .................. ....... .3 0

Andover Controls Corporation vii

Figures

Figure 1. The Front of the TCX 850 . ... ....... ....... ..... ....... ....... ....... ....... .1 0

Figure 2. Locations of Screw Holes and Parts Inside TCX 850 ......... .1 2

Figure 3. Diagram of the TCX 853 Controller ....................................1 3

Figure 4. Metal Plate and Screw for AC Power Wire .........................14

Figure 5. Infinet Cable Wiring to FASTON Receptacles ....................15

Figure 6. Schematic of Input Wiring for Thermistor ..... ....... ....... ....... .1 8

Figure 7. Schematic of Wiring for Counter or Digital Input ...............18

Figure 8. Schematic of Wiring for Voltage Input ................................18

Figure 9. Schematic of Wiring for Current Input................................ 19

Figure 10. TCX 850—Connecting Tubes/Wiring Air

Flow Sensor in VAV Box (VAV Cooling Only) ................22

Figure 11. TCX 850—Connecting Tubes/Wiring Air Flow

Sensor in VAV Box (One Stage Electric Heat) ...................2 3

Figure 12. TCX 850—Connecting Tubes/Wiring Air Flow

Sensor in VAV Box (Two Stage Electric Heat) ...................24

Figure 13. TCX 850—Connecting Tubes/Wiring Air Flow Sensor in

VAV Box (One Stage Electric Heat and One Fan) ..............25

Figure 14. TCX 850—Connecting Tubes/Wiring Air Flow Sensor in

VAV Box (Two Stage Electric Heat and One Fan) .............26

Figure 15. Schematic of Tristate Output Wiring ...................................27

Figure 16. Schematic of Form A Output Wiring ...................................28

viii TCX 850 Installation Guide

Tables

Table 1. Wire Gauges and Corresponding Maximum

Runs for Sensing Temperatures Up to 70

º

F ..........................7

Table 2. Wire Gauges and Corresponding Maximum

Runs for Sensing Temperatures Up to 100

º

F ........................7

Table 3. Wire Gauges and Corresponding Maximum

Runs for Sensing Temperatures Up to 150

º

F ........................8

Setting Up the TCX 850

Controller and Infinet

This manual covers the following:

• Site/System Setup Requirement s

• Installing the TCX 850 or any controller in the TCX 850 family

All of the instructions in this manual referring to the TCX 850 apply

to the other TCX controllers, except those for the air flow sensor,

found only on the 850 model.

Warranty Registration

Your warranty is effective for 18 months starting on the date the system

is shipped.

Warning

All wiring and installations must comply with local, state, and national

electrical codes.

Hardware Instal lation

2 TCX 850 Installation Guide

Site/System Setup Requirements

Before you proceed to install the system, you should map out where you

plan to install each controller, terminal/workstation, and modem. When

planning the sites, be aware of any electrical interference that may oc-

cur. You also need to be aware of cabinet dimensions, power

requirements, cable limitations, an d environm ental requir e ments .

Note

This equipment has been tested and found to comply with the limits for

a Class A digital device, pursuant to Part 15 of the FCC Rules. These

limits are designed to provide reasonable protection against harmful

interference when the equipment is operated in a commercial

environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the

instructions in this manual, may cause harmful interference to radio

communications. Operation of this equipment in a residential area is

likely to cause harmful interference in which case the user will be

required to correct the interference at his own expense.

Note

This digital apparatus does not exceed the Class A limits for radio noise

emissions from digital apparatus set out in the Radio Interference

Regulations of the Canadian Department of Communications.

Avis

Le présent appareil numérique n’émet pas de bruits radioélectriq ues

dépassant les limites applicables aux appareils numériques de la class A

prescrites dans le Règlement sur le brouillage radioélectrique édicté par

le ministère des Communications du Canada.

Hardware Installation

TCX 850 Installation Guide 3

Controller Dimensions and Weight

Each TCX 850 is 9 × 5.75 × 2.75 in. and weighs 2.5 lbs.

Power Requirements

Caution

The TCX 850 should receive power from its own independent,

unswitched circuit.

The TCX 850 operates on a power supp ly of 24 VAC +/– 2 0% 5 0

or 60 Hz (fo r s moke control applicat ions, +10/ –1 5%, 60 Hz).

The TCX 850 consu mes 20 VA of power.

Cabl e Limitations

The maximum cable length for Infinet is 4,000 ft at 19,200 baud (up to

32 Infinet controllers). You can extend Infinet beyond 4,000 ft or put

more than 32 Infinet contr ollers on less than 4,00 0 ft by using the In-

fiLink 200 amplification module.

Note

You mu s t use s hie ld ed ca bl es f o r Infinet to ensure compliance with the

Class A FCC limits and to provide reliable communications.

Cables that form Infinet are 24-gauge, single-t wis ted-pair , tin ned,

shielded copper wire. Use the following cables

1

or their equivalents:

• Brand Rex # H 9002 (single-pair)

• Anixter # 9J2401021 (single-pair plenum cable)

The cable should have a nominal impedance of 100 Ohms and a

nominal velocity of propagation of 78%.

1. You can also use any cables you may already have in place for ACNET or LBU.

Hardware Instal lation

4 TCX 850 Installation Guide

Capacitance of Infinet cable should be nominal, below 12.5 pF/ft be-

tween conductors and below 22 pF/ft between the conductor connected

to ground and the next conductor.

Lightning Protection

Each TCX 850 has two 1500 V spark gap capacitors and a metal oxide

varistor built into the board to protect against line transients. However,

this protection is not sufficient to pro tect against lig htning.

Lightning arresters are required at each point where Infinet cable enters

or exits a building. Use the following arrester:

Two pair gas tube arrester, Andover Controls # 01-2100-299

Building Ground Requirements

Warning

Be sure that all Infi nity products from Ando ver Controls Corporation

are grounded to true earth ground. This kind of ground protects the

equipment from transients and other power surges in the area.

We cannot guarantee that the controller system will operate as

documented unless you properly grou nd all control lers .

Warning

Be sure to have your grounds inspected before you begin the

installation process to be sure your municipality follows the National

Electrical Code. M a ny muni ci palitie s do not an d often have

substandard electrical grounds.

An example of a substandard ground is a galvanized steel cold water

pipe. As the pipe corrodes, it does not act as a true ground. The corro-

sion acts as an insulator, raising the potential of the pipe with respect to

the ground.

Hardware Installation

TCX 850 Installation Guide 5

When lightning strikes in the area of the ins talla tion, it drastically

changes the potential of the earth. Since properly grounded Andover

Controls units respond to changes in potential more rapidly than poorly

grounded electrical systems, a poorly grounded buildi ng tries to reach

ground through the Andover Controls system. The surge of current can

destroy electronic components on the controller board.

Surges of much lower potential than lightning also impact the reliability

of Andover Controls equipment.

Inspecting the Ground

You can check your ground as follows:

1. Check your ground by first inspectin g the building power

distribution panel for earth ground termination. If the ground

termination is any of the following, it is not adequate and must be

corrected:

• Does not exist.

• Is connected to a corroded or galvanized pipe.

• Is connected using a small gauge wire (less than 14 AWG).

2. Be sure your Andover Controls cabinet is connected to the ground

with a copper conductor that terminates at the distribution panel.

Environmental Requirements

The TCX 850 operates in rooms with temperatures ranging from 32 to

120°F and with humidity up to 85%, non-condensing.

The controller must be in an Underwriter Laboratories listed enclosure.

Output Equipment Requirements

The four outputs on the TCX 850 provide direct digital control for elec-

tronic devices and bi-directional motors and actuators . The first three

outputs are Form A (single pole, single throw) and the fourth is Form K

tristate.