Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Johnson Controls York 366-70488
Summary of Contents for Johnson Controls York 366-70488
- Page 1 LOW PRESSURE CUTOUT CONTROL P/N 025-45742-000 INSTALLATION AND MAINTENANCE Supersedes: 160.43-NM4 (1206) Form 160.43-NM4 (1112) 035-21593-000 FOR OT/HT MODEL CHILLERS STYLE “B” AND ”C” CONTROL CENTERS 366-70488, 366-70487 AND 366-73582 LD12524a Issue Date: November 12, 2012...
- Page 2 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.
- Page 3 FORM 160.43-NM4 ISSUE DATE: 11/12/2012 CHANGEABILITY OF THIS DOCUMENT In complying with Johnson Controls’ policy for con- these documents, the technician should verify whether tinuous product improvement, the information con- the equipment has been modified and if current litera- tained in this document is subject to change without ture is available from the owner of the equipment prior notice.
- Page 4 FORM 160.43-NM4 ISSUE DATE: 11/12/2012 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
-
Page 5: Table Of Contents
Connect LPCO Pressure Connection To A Calibrated Vacuum Source ............13 Cutout Setpoint Testing And Calibration ......................14 Switch Deadband Testing And Calibration...................... 14 Reconnect LPCO Evaporator Pressure Connection And Wiring ..............15 Return Chiller To Service ..........................15 SECTION 4 - PRODUCT SPECIFICATIONS ......................17 JOHNSON CONTROLS... - Page 6 FORM 160.43-NM4 ISSUE DATE: 11/12/2012 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
-
Page 7: Section 1 - General
This means that the absolute pressure of the cutout set- ting will vary with local atmospheric pressure changes. LPCO controls 025 45742 require cutout setpoint and JOHNSON CONTROLS... - Page 8 As the pressure rises above the control CUTIN (CU- TIN equals cutout plus deadband settings) the switch transfers to be made between the Common and Nor- mally Open terminals and open between the Common and Normally Closed terminals. Refer to Figure 1. JOHNSON CONTROLS...
-
Page 9: Section 2 - Installation
Do not mount unit in ambient temperature 45742 to the back wall of the ECC where exceeding Specified limits. the former control was located and using two #10 self tapping screws (YORK p/n 021 14727 000) provided in kit. JOHNSON CONTROLS... -
Page 10: Pressure Connection Piping
Route the capillary tubing across to the right hand wall of the ECC and up the right hand wall to the area of the “Cooler” (evaporator) panel gauge. Coil any excess capillary tubing near the evaporator pressure tap connection. JOHNSON CONTROLS... -
Page 11: Wiring
(47, 48 and spade (YORK p/n 025 18732 000) terminal 49) may need to be relocated through the connectors. cabinet middle conduit fitting containing the high pressure control wires. Reroute LPCO wiring as necessary. JOHNSON CONTROLS... - Page 12 6. Turn on power source feed to the chiller Electron- 5. Connect the wire numbered 47 to the 025 45742 ic Control Center (ECC). LPCO control switch terminal labeled as COM- MON. Refer to Figures 1, 3 and 4 and ECC Wir- ing Diagram. JOHNSON CONTROLS...
-
Page 13: Section 3 - Testing And Adjustments
4.00 in. Hg. ± 0.50 Use with R-11 10.80 in. and 11.10 in. Hg. Absolute 21.30 in. and 21.00 in. Hg. Vacuum 025 41881 003 4.00 in. Hg. ± 0.50 Use with R-123 8.70 in. and 9.00 in. Hg. Absolute JOHNSON CONTROLS... -
Page 14: Cutout Setpoint Testing And Calibration
(towards letter “F”). 7. Repeat steps 4, 5, and 6 until the noted CUT OUT setpoint is within the allowable range. 5. Repeat steps 3, 4, and 5 until the noted CUTIN is within the allowable DEADBAND setting range. JOHNSON CONTROLS... -
Page 15: Reconnect Lpco Evaporator Pressure Connection And Wiring
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 Figures 1, 3 and 4 and ECC Wir- ing Diagram. JOHNSON CONTROLS... - Page 16 FORM 160.43-NM4 SECTION 3 - TESTING AND ADJUSTMENTS ISSUE DATE: 11/12/2012 THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...
-
Page 17: Section 4 - Product Specifications
* Over Range Pressure - The Maximum pressure that may be applied continuously without causing damage and maintaining set point repeatability. ** Proof Pressure - The maximum pressure to which a pressure sensor may be occasionally subjected, which causes no permanent damage. The unit may require calibration. JOHNSON CONTROLS... - Page 18 P.O. Box 1592, York, Pennsylvania 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, 2012 Supersedes: 160.43-NM4 (1206)
Need help?
Do you have a question about the York 366-70488 and is the answer not in the manual?
Questions and answers