York YCAL0041 User Manual download pdf (Page 78)

YORK INTERNATIONAL

water sensors, and liquid line components (solenoid

valves, ﬁlter driers, sight glasses, and TXVs), as

discrete elements of a complete factory system.

Contractor shall be ﬁeld erect system and provide

interconnecting refrigerant piping and wiring in

accordance with Manufacturer recommendations,

and project plans and schedules. Where not oth-

erwise speciﬁed, Contractor provided system piping

shall be in accordance with applicable sections of

ASHRAE Handbook.

O. Hot Gas By-Pass: Permits continuous, stable op

eration at capacities below the minimum step of

unloading to as low as 5% capacity (depending on

both the unit & operating conditions) by introducing

an artiﬁcial load on the cooler. Hot gas by-pass is

installed on only one refrigerant circuit (System

#1).

P. Microprocessor Membrane Keypad Graphics on in

lieu of Standard English:

1. French language.

2. German language.

3. Spanish language.

4. Italian language.

Q. Thermal Storage: Leaving chilled liquid setpoint

range for charge cycle from 25°F to 20°F minimum,

with automatic reset of the leaving brine temperature

up to 40°F above the setpoint. (Works with Option

R. Low Temperature Process Brine: Leaving chilled

liquid setpoint range 20°F to 30°F.

S. Chicago Code Relief Valves to meet Chicago Code

requirements.

T. Building Automation System (EMS) Reset Interface:

Chiller to accept 4 to 20mA, 0 to 10 VDC, or discrete

contact closure input to reset the leaving chilled

liquid temperature.

U. Remote Control Panel (Field-mounted): Auxiliary

panel for remote user interface for functions nor

mally made at the unit control center. Available on

YCAL0014-0080 models.

V. OptiView Remote Control Panel (Field-mounted):

Graphical interface panel to remotely control and

monitor up to 8 different units.

W. Multi-Unit Sequencing Panel (Field-mounted):

Separate Sequencing control center is provided to

permit control of up to eight chillers in parallel based

on mixed liquid temperature.

X. Sound Reduction (Factory-mounted):

1. Ultra quiet, low speed, reduced noise fans

2. Compressor Acoustic Sound Blankets

Y. Vibration Isolation (Field-mounted):

1. Neoprene Pad Isolators.

2. 1 Inch Deﬂection Spring Isolators: Level ad

justable, spring and cage type isolators for

mounting under the unit base rails.

3. 2 Inch Deﬂection Seismic Isolators: Level ad-

justable, restrained mounts in rugged welded

steel housing with vertical and horizontal limit

stops. Housings shall be designed to withstand

a minimum 1.0g accelerated force in all direc-

tions to 2 inches.

PART 3 - EXECUTION

3.01 INSTALLATION

A. General: Rig and Install in full accordance with

Manufacturers requirements, Project drawings, and

Contract documents.

B. Location: Locate chiller as indicated on drawings,

including cleaning and service maintenance clear

ance per Manufacturer instructions. Adjust and level

chiller on support structure. If equipment provided

exceeds height of scheduled chiller, installing con-

tractor is responsible for additional costs associated

with extending the height of parapet or screening

walls/enclosures

C. Components: Installing Contractor shall provide and

install all auxiliary devices and accessories for fully

operational chiller.

D. Electrical: Coordinate electrical requirements and

connections for all power feeds with Electrical Con

tractor (Division 16).

E. Controls: Coordinate all control requirements and

connections with Controls Contractor.

F. Finish: Installing Contractor shall paint damaged and

abraded factory ﬁnish with touch-up paint matching

factory ﬁnish.

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York YCAL0041 User Manual Page 78

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