Northern Lights TECHNICOLD OTCW Operator's Manual
  1. Manuals
  2. Brands
  3. Northern Lights Manuals
  4. Air Conditioner
  5. TECHNICOLD OTCW
  6. Operator's manual

Northern Lights TECHNICOLD OTCW Operator's Manual

Chilled water air conditioning systems
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
OTCW
For Chilled Water
Air Conditioning Systems
OPERATOR'S MANUAL
OPERATOR'S MANUAL
Technicold Marine Systems | www.technicold.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TECHNICOLD OTCW and is the answer not in the manual?

Questions and answers

Summary of Contents for Northern Lights TECHNICOLD OTCW

  • Page 1 OTCW For Chilled Water Air Conditioning Systems OPERATOR’S MANUAL OPERATOR’S MANUAL Technicold Marine Systems | www.technicold.com...
  • Page 2 Deerfield Beach, FL 33442 Tel: (954) 421-1717 Fax: (954) 421-1712 Copyright ©2011, Northern Lights, Inc. All rights reserved. Northern Lights, Technicold, the Northern Lights logo, and the Technicold logo are trademarks of Northern Lights, Inc. Printed in U.S.A. PART NO.: OTCW 4/11...

  • Page 3: Table Of Contents

    © Northern Lights, Inc. All right reserved. Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Technicold by Northern Lights assumes no responsibility for errors and omissions. Neither is any liability assumed for damages resulting from the use of this product and information contained herein.

  • Page 4: Important Safety Warnings

    IMPORTANT SAFETY WARNINGS - PLEASE READ SAFETY General Overview The installed Technicold equipment may be one component or a built-up system comprising of multiple components. The equipment can present a hazard due to pressures, temperatures, chemicals, weight and mass, moving parts, electrical components, and sharp or extruded edges. Only qualified service personnel are to install, service or repair this equipment.
  • Page 5 HAZARDS Electrical Shock Disconnect voltage to equipment before opening any electrical panel or cover. Some equipment may have two power sources; in this case, make sure both are turned off. Tag, remove or lock-out any breaker, switch, fuse or disconnect that can be energized without the knowledge of the user during service.
  • Page 6 HAZARDS Refrigerant Chillers, refrigeration systems and direct expansion systems may contain pressurized refrigerant in liquid and gas form. Refrigerant vapor reduces oxygen available for breathing, which can cause rapid suffocation. Inhalation or misuse of the product can cause serious personal injury or death. Refrigerate may decompose on flame or extremely hot surfaces to produce toxic or corrosive materials.

  • Page 7: Technicold Temperature Control

    PT 1: OPERATION, TROUBLESHOOTING, ELECTRICAL DRAWING, VFD PROGRAMMING TECHNICOLD TEMPERATURE CONTROL Liquid Crystal Display (LCD) The LCD display provides a constant readout of the sensor temperature if the control is energized. During the operation the S1 annunciator is constantly illuminated when the relay is energized.
  • Page 8 TECHNICOLD TEMPERATURE CONTROL Lockout Switch The TTC is provided with a lockout switch to prevent tampering by unauthorized personnel. When placed in the LOCK position, the keypad is disabled and no changes can be made. When placed in the UNLOCK position, the keypad will function normally.
  • Page 9 TECHNICOLD TEMPERATURE CONTROL Caution To prevent possible electrical shock or equipment damage, disconnect electrical power to the unit before and during installation. DO NOT restore electrical power to unit until the control is properly installed and the cover is assembled. DO NOT locate the control in an explosive atmosphere as a safety hazard can result due to pos- sible spark generation in the control.

  • Page 10: Chilled Water Troubleshooting Guide

    CHILLED WATER TROUBLESHOOTING GUIDE The following troubleshooting guide should be used in conjunction with the Chillers' Electrical Schematic. On the top of the chiller evaporator plate there is a terminal strip protected by a stainless steel cover. All of the control and safety circuits are placed in a series along this terminal strip. Should the chiller go offline, the device that has stopped the chiller from running can be found by troubleshooting the terminal strip.
  • Page 11 CHILLED WATER TROUBLESHOOTING GUIDE Possible Causes and Remedies for the Chiller Cycling Off Fault Cause Remedy Tripped on Flow Flow switch opened due to: Switch 1. Loss of circulation water pressure. • Check pressure gauge on suction side of the pump, fill as needed.
  • Page 12 CHILLED WATER TROUBLESHOOTING GUIDE Fault Cause Remedy Tripped on Freeze 3. Low load on circulation water • Turn on Immersion or Parastic Load Bank Thermostat Heater to add load to cirulation water. (Continued) NOTE: The freeze thermostat will • Turn on air handlers in high load areas. reset at 48 o F •...
  • Page 13 CHILLED WATER TROUBLESHOOTING GUIDE Fault Cause Remedy Tripped on High 3. Unit has been serviced and now • Recover the refrigerant charge and recycle if Pressure Switch has an overcharge. needed. Evacuate the system and weigh-in the (Continued) charge, or charge until the sight glass has cleared. If the system charge is a blend, there may be occasional bubbles in the sight glass.

  • Page 14: Electrical Drawings

    OTCW 4/11...
  • Page 15 OTCW 4/11...

  • Page 16: Smv Variable Frequency Drive

    SMVector VARIABLE FREQUENCY DRIVE (VFD) VFD Compressor Re-Programming Instructions (Configured for Optional TB-16 & TB-17 Normally Open Relay Operations) Most drives provided by Technicold leave the factory pre-programmed for their intended application. In the event that the customer receives a drive that has not been programmed the following steps will guide you through the process.
  • Page 17 SMVector VARIABLE FREQUENCY DRIVE (VFD) VFD Compressor Re-Programming Instructions - Continued (Configured for Optional TB-16 & TB-17 Normally Open Relay Operations) The programmable parameters for the Compressor VFD are as follows: Default Parameter Name Value Setting Selection P199 Program Selection (60 Hz) Reset to 60Hz default settings Program Selection (50 Hz) Reset to 50Hz default settings...
  • Page 18 SMVector VARIABLE FREQUENCY DRIVE (VFD) VFD Compressor Re-Programming Instructions - Continued (Configured for Optional TB-16 & TB-17 Normally Open Relay Operations) There are six buttons on the front of the drive (Up), (Down), (Mode), (Rotation), (Stop), & (Run). Use only the Up , Down , and Mode buttons to program the drive.
  • Page 19 SMVector VARIABLE FREQUENCY DRIVE (VFD) Troubleshooting Guides The SMV variable frequency drive provides for surge less starting of the Chiller Compressor and inherent circuit/fault protection. See the VFD manual for a complete description of the drives operation and functionality, including programmable parameters. There are 18 Status/Warning, 2 Configuration and 25 Fault Messages.

  • Page 20: Part 2: Servicing - Adding Glycol, Fresh Water Fill Assembly, Immersion Heat Conversion Adding Glycol To A Chilled Water System

    PART 2: SERVICING - ADDING GLYCOL, FRESH WATER FILL ASSEMBLY, IMMERSION HEAT CONVERSION ADDING GLYCOL TO A CHILLED WATER SYSTEM WARNINGS Over the course of time, any product under pressure may corrode, weaken and burst or explode, causing serious or fatal personal injury, leaking or flooding and/or property damage. To minimize this risk, a licensed professional or experienced technician must install, periodically inspect and service the product.
  • Page 21 ADDING GLYCOL TO A CHILLED WATER SYSTEM Adding Solution to the Circulation Loop There are three recommended methods for adding glycol to a new chilled water system, and two recommended methods for adding glycol to an existing system. Use the method that works best for you. In any case, once the system has been filled with the correct percentage of mixture it should be checked with a Glycol Refractometer.
  • Page 22 ADDING GLYCOL TO A CHILLED WATER SYSTEM Method 3: Estimate the total volume of the circulation loop including air handlers and chillers. Measure out the quantity of pure glycol needed to be diluted with water in order to obtain the temperature reading required.
  • Page 23 ADDING GLYCOL TO A CHILLED WATER SYSTEM Method 2: a. Shut off the chiller(s) and circulation water pump. Open one of the bleeders on the chiller to relieve the pressure down to zero pounds gage. b. Obtain a submersible pump such as a Technicold TE500A (115V) and connect a hose fitting and hose to the discharge of the pump.

  • Page 24: Fresh Water Fill Assembly

    FRESH WATER FILL ASSEMBLY WARNINGS When installing, servicing and operating any pressurized system, safety gloves and goggles should be worn at all times! When testing the safety valve be sure that the water being discharged will not cause property damage or personal injury to those in the vicinity.
  • Page 25 FRESH WATER FILL ASSEMBLY Operation To fill the system connect the clean fresh water supply to the shutoff valve connected upstream of the regulator. Turn on the fresh water and supply and open the shutoff valve. The water now flows through the regulator to the pressure relief valve and then into the system.

  • Page 26: Fill Assembly Drawing

    OTCW 4/11...

  • Page 27: Immersion Heaters

    IMMERSION HEATERS WARNINGS Read all instructions before operation. Turning off the thermostat does not remove power from inside the heater control box. Both the heater and hi-limit circuits still have voltage at their connections. The 6 kW immersion heater operates between 208VAC and 240VAC. Operating at 208V delivers 4500 watts of power and at 240V, 6000 watts of power.
  • Page 28 IMMERSION HEATERS Purpose and Use Technicold immersion heaters can be used as individual 6 kW modules or manifolded together for higher capacities. Whether used individually or in multiple applications all safety devices must be connected and a flow switch installed. The heaters are designed for heating liquid and must be filled at all times. Care should be taken to avoid air entrapment or pockets;...
  • Page 29 IMMERSION HEATERS Troubleshooting/Repair A qualified technician should perform Troubleshooting or repairs. Incorrect diagnosis or repairs could lead to damage of the equipment and injury to personnel. PROBLEM – Power to the heater but no heat output. SOLUTION – (a) Turn on the thermostat located on the heater electrical box. (b) Check the wiring connections on the heater.

  • Page 30: Immersion Heater Drawings

    OTCW 4/11...
  • Page 31 OTCW 4/11...
  • Page 32 OTCW 4/11...

  • Page 33: Part 3: Maintenance Daily Maintenance

    PART 3: MAINTENANCE DAILY MAINTENANCE RAW WATER STRAINER Raw water strainers are mandatory for all Technicold systems. Check the raw water strainer daily. A visual inspection through the sight-glass housing is usually sufficient for daily inspections. See the "Weekly Maintenance" section (below) for instructions and weekly inspection and servicing of the raw water strainer. CIRCULATION WATER STRAINER Construction debris can contaminate water piping.

  • Page 34: Weekly Maintenance

    FAHRENHEIT-CELSIUS TEMPERATURE CONVERSION CHART WEEKLY MAINTENANCE RAW WATER STRAINER Open the strainer and inspect at least once a week or if debris build up is noted. Make sure to close the thru- hull valve prior to opening the strainer for service. Remove any debris from the strainer sight-glass housing and strainer basket.

  • Page 35: Monthly Maintenance

    MONTHLY MAINTENANCE HUMIDITY MODE When leaving the vessel unoccupied for an extended period of time the air handlers controls can be set to Humidity Mode; also referred to as Moisture Control, or Away Mode. This will ensure that the water valves and blowers operate every four hours in addition to controlling the humidity levels inside the boat.

  • Page 36: Quarterly Maintenance

    QUARTERLY MAINTENANCE CIRCULATION WATER STRAINER Check the circulation water strainer each quarter for the first year of service on a new system. See daily maintenance requirements on page 36. CONDENSATE DRAINS To test the integrity of the condensate drains, pour a quart of water into the air handler condensate pans. If they do not drain quickly then check the drain pan for blockages.

  • Page 37: Annual Maintenance

    QUARTERLY MAINTENANCE THRU-HULL FITTINGS Debris including plastic bags can be sucked onto thru-hull fittings causing a restriction of water flow. The build up of marine growth can also cause a problem. Inspect thru-hulls and clean before the restriction becomes severe. Severe water restrictions diminish the capacity of the system and can cause pump failures. FIRST STAGE COMPRESSOR On a staged chiller, the first stage is always the first to come on and the last to turn off.

  • Page 38: Part 4: Appendix

    PART 4: APPENDIX FAHRENHEIT/CELSIUS TEMPERATURE CONVERSION The numbers in bold -face in the center column refer to the temperature either in Celsius or Fahrenheit, which is to be converted to the other scale. If converting Fahrenheit to Celsius the equivalent temperature will be found on the column on the right.

  • Page 39: A/C Definitions And Facts

    A/C DEFINITIONS AND FACTS Cooling is the transfer of heat from an area where it is not wanted to an areal where it is not objectionable. Heat always flows from a warmer to a cooler area. "Ambient Air" is the temperature of air surrounding an object (i.e. room temperature) Three types of heating or cooling: a.

  • Page 40: Technicold Air Conditioning Warranty Statement

    The Limited Warranty applies to the following product lines: TECHNICOLD Air Conditioning and Refrigeration Products Technicold manufacturerer NORTHERN LIGHTS, INC. (herein “NLI”) extends to the purchaser and user (herein “Owner”) of the product the following limited warranty (herein “Warranty”). Please read it carefully.

  • Page 41: Notes

    NOTES_______________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ OTCW 4/11...
  • Page 43 AIR CONDITIONING DEFINITIONS AND FACTS...
  • Page 44 1419 W. Newport Center Drive, Deerfield Beach, FL 33442 Tel: (954) 421-1717 • Fax: (954) 421-1712 Northern Lights and Technicold are registered trademarks of Northern Lights, Inc. w w w . t e c h n i c o l d . c o m...

Table of Contents