Johnson Controls York 366-70487 Installation And Maintenance Manual Download Page 2

JOHNSON CONTROLS

2

FORM 160.43-NM4 

ISSUE DATE: 11/12/2012

This equipment is a relatively complicated apparatus. 

During installation, operation maintenance or service, 

individuals may be exposed to certain components or 

conditions including, but not limited to: refrigerants, 

materials under pressure, rotating components, and 

both high and low voltage. Each of these items has the 

potential, if misused or handled improperly, to cause 

bodily injury or death. It is the obligation and respon-

sibility of operating/service personnel to identify and 

recognize these inherent hazards, protect themselves, 

and proceed safely in completing their tasks. Failure 

to comply with any of these requirements could result 

in serious damage to the equipment and the property in 

IMPORTANT!

READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDELINES

which it is situated, as well as severe personal injury or 

death to themselves and people at the site.
This document is intended for use by owner-authorized 

operating/service personnel. It is expected that these 

individuals possess independent training that will en-

able them to perform their assigned tasks properly and 

safely. It is essential that, prior to performing any task 

on this equipment, this individual shall have read and 

understood this document and any referenced mate-

rials. This individual shall also be familiar with and 

comply with all applicable governmental standards and 

regulations pertaining to the task in question.

SAFETY SYMBOLS

The following symbols are used in this document to alert the reader to specific situations:

Indicates a possible hazardous situation 

which will result in death or serious injury 

if proper care is not taken.

Indicates a potentially hazardous situa-

tion which will result in possible injuries 

or damage to equipment if proper care is 

not taken.

Identifies a hazard which could lead to 

damage to the machine, damage to other 

equipment and/or environmental pollu-

tion if proper care is not taken or instruc-

tions and are not followed.

Highlights additional information useful 

to the technician in completing the work 

being performed properly.

External wiring, unless specified as an optional connection in the manufacturer’s product line, is not 

to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls 

and any external wiring must not be installed inside the micro panel. All wiring must be in accor-

dance with Johnson Controls’ published specifications and must be performed only by a qualified 

electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper 

connections to the controls or application of improper control signals. Failure to follow this warn-

ing will void the manufacturer’s warranty and cause serious damage to property or personal injury.

Summary of Contents for York 366-70487

Page 1: ...RS STYLE B AND C CONTROL CENTERS 366 70488 366 70487 AND 366 73582 LOW PRESSURE CUTOUT CONTROL P N 025 45742 000 INSTALLATION AND MAINTENANCE Supersedes 160 43 NM4 1206 Form 160 43 NM4 1112 035 21593...

Page 2: ...als This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are used i...

Page 3: ...icy for con tinuous product improvement the information con tained in this document is subject to change without notice Johnson Controls makes no commitment to update or provide current information au...

Page 4: ...JOHNSON CONTROLS 4 FORM 160 43 NM4 ISSUE DATE 11 12 2012 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 5: ...ting 025 45742 LPCO Control 9 Pressure Connection Piping 10 Wiring 11 SECTION 3 TESTING AND ADJUSTMENTS 13 Tools Needed 13 Secure Chiller From Operation 13 Connect LPCO Pressure Connection To A Calibr...

Page 6: ...JOHNSON CONTROLS 6 FORM 160 43 NM4 ISSUE DATE 11 12 2012 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 7: ...tments LPCO controls 025 45742 are vacuum switches which are negative gauge pressure controls that operate at a predetermined constant pressure below atmospheric This means that the absolute pressure...

Page 8: ...At atmospheric pressure the switch contacts are made between the Common and Normally Open terminals and open between the Common and Normally Closed terminals As the pressure falls below the control C...

Page 9: ...rated in a vertical position with the switch up and pressure con nection down The controls are surface mounted using two mounting ears with holes for 10 screws on either side of the control bracket pl...

Page 10: ...o pressure connection tight enough to ensure a leak free seal 2 Installing kit supplied Capillary Tube 48 in YORK p n 026 45010 000 a Ensure 1 4 in flare mating surfaces are clean and free of debris o...

Page 11: ...itch bracket Refer to Figure 3 The three switch terminals are clearly labeled COM MON NORMALLY OPEN and NORMALLY CLOSED Refer to Figures 3 and 4 1 Remove enclosure cover first by removing the one capt...

Page 12: ...res 1 3 and 4 and ECC Wiring Diagram 8 Use kit supplied wire tie wraps YORK p n 025 09607 000 to bundle and or secure LPCO control wires numbered 47 48 and 49 as needed 9 Reinstall enclosure cover sec...

Page 13: ...flare half union fitting at the LPCO control pressure con nection 2 Using clean 1 4 in refrigerant hoses connect a controllable vacuum source in series to a digital vacuum gauge and to the 1 4 in ext...

Page 14: ...7 Repeat steps 4 5 and 6 until the noted CUT OUT setpoint is within the allowable range 8 Once the CUTOUT set point is verified or cali brated then proceed to the switch DEADBAND calibration procedur...

Page 15: ...k free seal 4 Disconnect the Ohm meter from the switch Com mon and Normally Open terminals 5 Connect the wire numbered 47 to the 025 45742 LPCO control switch terminal labeled as COM MON Refer to Figu...

Page 16: ...JOHNSON CONTROLS 16 FORM 160 43 NM4 ISSUE DATE 11 12 2012 Section 3 Testing and Adjustments THIS PAGE INTENTIONALLY LEFT BLANK...

Page 17: ...plated brass Wetted Materials Brass bellows and zinc plated steel spring Weight Approx 1 lb Approvals UNITED STATES AND CANADA UL Listed cUL Certified Pressure UL 508 CSA C22 2 No 14 Files E42272 EUR...

Page 18: ...USA 17405 1592 800 861 1001 Subject to change without notice Printed in USA Copyright by Johnson Controls 2012 www johnsoncontrols com ALL RIGHTS RESERVED Form 160 43 NM4 1112 Issue Date November 12 2...

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