Trane RT-PRC010-EN Manuel d'utilisateur télécharger pdf (Page 100)

RT-PRC010-EN100

Direct field wiring to the I/O boards is not

acceptable.

The microprocessor’s memory shall be

non-volatile EEPROM type requiring no

battery or capacitive backup, while

maintaining all data.

Zone sensors shall be available in

several combinations with selectable

features depending on sensor.

The Human Interface Panel’s keypad

display character format shall be 40

characters x 2 lines. The character font

shall be 5 x 7 dot matrix plus cursor. The

display shall be Supertwist Liquid Crystal

Display (LCD) with blue characters on a

gray/green background which provides

high visibility and ease of interface. The

display format shall be in clear English.

Two or three digit coded displays are not

acceptable.

The keypad shall be equipped with

16 individual touch-sensitive membrane

key switches. The switches shall be

divided into four separate sections and

be password protected from change

by unauthorized personnel. The six main

menus shall be STATUS, SETPOINTS,

DIAGNOSTICS,

SETUP, CONFIGURATION and SERVICE

MODE.

Filters

General

Filter options shall mount integral within

unit and be accessible by hinged access

panels.

No Filters (two inch throwaway filter

rack only) option

Shall provide a complete set of two-inch

thick filter racks, without the filter media

to accommodate applications which

require field supplied filters.

No filters (bag/cartridge with prefilter

filter rack option)

Shall provide a long-lasting galvanized

steel frame without the filter media to

accommodate applications which

require field supplied filters.

Mechanical

Specifications

AIR HANDLING SYSTEM

Supply Fan

20 - 75 Ton Units

All supply fans shall have two double-

inlet, forward-curved fans mounted on a

common shaft with fixed sheave drive

and shall be dynamically balanced and

tested in factory. Supply fan shall be test

run in unit as part of unit test and unit

shall reach rated rpm before the fan shaft

passes through first critical speed. Fan

shaft shall be mounted on two grease

lubricated ball bearings designed for

200,000 hours average life. Optional

extended grease lines shall allow

greasing of bearings from unit filter

section. Fan motor and fan assembly

shall be mounted on common base to

allow consistent belt tension with no

relative motion between fan and motor

shafts. Entire assembly shall be

completely isolated from unit and fan

board by double deflection rubber-in-

shear isolators or by two-inch deflection

spring isolation on motor sizes larger

than five hp. All supply fan motors meet

the U.S. Energy Policy Act of 1992

(EPACT).

90 - 130 Ton Units

All supply fans shall have two

independent fan assemblies with double

inlet, air foil fan, motor and fixed pitch

sheave drive. All fans shall be statically

and dynamically balanced and tested in

factory. Supply fans shall be test run in

unit as part of unit test. Unit shall reach

rated rpm before fan shaft passes

through first critical speed. Fan shafts

shall be mounted on two grease

lubricated ball bearings designed for

200,000 hours average life. Optional

extended grease lines shall allow

greasing of bearings from unit filter

section. Fan motor and fan assembly

shall be mounted on common base to

allow consistent belt tension with no

relative motion between fan and motor

shafts. Entire assemblies shall be

completely isolated from unit and

fan board by two-inch deflection

spring isolators. All supply fan motors

meet the U.S. Energy Policy Act of 1992

(EPACT).

Controls

Unit shall be completely factory wired

with necessary control and contactor

pressure lugs or terminal block for

power wiring. Units shall provide an

internal location for a non-fused

disconnect with external handle for

safety. Unit mounted microprocessor

controls shall provide anti-short cycle

timing for compressors to provide a high

level of machine protection.

Unit Controller

DDC microprocessor controls shall be

provided to control all unit functions. The

control system shall be suitable to

control CV or VAV applications. The

controls shall be factory-installed and

mounted in the main control panel. All

factory-installed controls shall be fully

commissioned (run tested) at the factory.

The unit shall have a Human Interface

Panel with a 16 key keypad, a 2 line X 40

character clear English display as

standard to provide the operator with full

adjustment and display of control data

functions. The unit controls shall be used

as a stand-alone controller, or as part of a

building management system involving

multiple units.

The unit shall be equipped with a

complete microprocessor control

system. This system shall consist of

temperature and pressure (thermistor

and transducer) sensors, printed circuit

boards (modules), and a unit mounted

Human Interface Panel. Modules

(boards) shall be individually replaceable

for ease of service. All microprocessors,

boards and sensors shall be factory

mounted, wired and tested.

The microprocessor boards shall be

stand-alone DDC controls not dependent

on communications with an on-site PC

or a Building Management Network. The

microprocessors shall be equipped with

on-board diagnostics, indicating that all

hardware, software and interconnecting

wiring are in proper operating condition.

The modules (boards) shall be protected

to prevent RFI and voltage transients

from affecting the board’s circuits. All

field wiring shall be terminated at

separate, clearly marked terminal strip.

1 2 ... 95 96 97 98 99 100 101 102 103 104

Commentaires sur ces manuels

Pas de commentaire

Trane RT-PRC010-EN Manuel d'utilisateur Page 100

Commentaires sur ces manuels

Produits connexes et manuels pour Pompes à chaleur Trane RT-PRC010-EN