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ULTRA LOW NOX COMMERCIAL GAS WATER HEATERS
300 Maddox Simpson Parkway
Lebanon, TN 37090
Phone: 615-889-8900 • Fax: 615-547-1000
Technical Service email: 2tech@lochinvar.com
www.Lochinvar.com
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do
not use any phone in your building.
•
Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
•
If you cannot reach your gas supplier,
call the fire department.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
PRINTED 0215
LOW LEAD
CONTENT
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
Instruction Manual
MODELS CLN075075 / CLN 075100
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY
•
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
1
Series 100
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
•
325368-001
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Summary of Contents for Lochinvar CLN075075
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Page 1: For Your Safety
Instruction Manual ULTRA LOW NOX COMMERCIAL GAS WATER HEATERS MODELS CLN075075 / CLN 075100 Series 100 INSTALLATION - OPERATION - SERVICE - MAINTENANCE - LIMITED WARRANTY 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 Technical Service email: 2tech@lochinvar.com www.Lochinvar.com... -
Page 2: Table Of Contents
TABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE...... 3 Outdoor Air Through Two Horizontal Ducts ....14 APPROVALS ..............3 Outdoor Air Through Two Vertical Ducts ....14 GENERAL SAFETY INFORMATION ........4 Air From Other Indoor Spaces ........14 INTRODUCTION ..............5 Venting ..............14 Abbreviations Used ............. 5 Gas Piping .............. -
Page 3: Safe Installation, Use And Service
SAFE INSTALLATION, USE AND SERVICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who install, use, or service this water heater. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. DANGER indicates an imminently hazardous situation which, if not avoided, DANGER... -
Page 4: General Safety Information
GENERAL SAFETY INFORMATION... -
Page 5: Introduction
INTRODUCTION Thank You for purchasing this water heater. Properly installed and properly. It could cause DEATH, SERIOUS BODILY INJURY maintained, it should give you years of trouble free service. AND/OR PROPERTY DAMAGE. This manual contains instructions for the installation, ABBREVIATIONS USED operation, and maintenance of the gas-fired water heater. It also contains warnings throughout the manual that you must Abbreviations Found In This Instruction Manual: read and be aware of. All warnings and all instructions are • UL - Underwriters Laboratories Inc. essential to the proper operation of the water heater and your • ANSI - American National Standards Institute safety. Since we cannot put everything on the first few pages, •... -
Page 6: Installation Considerations
15 3/16 15 3/4 1 1/4 1 1/4 11 15/16 Natural 179.1 168.9 78.6 70.5 38.6 10.2 40.0 40.6 30.3 CLN075075 Inches 62 1/16 29 1/2 25 1/4 15 7/8 15 1/4 12 1/2 Natural 157.6 147.3 74.9 64.1 40.3 10.2 38.7... -
Page 7: Thermometers
THERMOMETERS (Not Supplied) the structure. For this reason, it is not advisable to install water heater in an attic or upper floor. When such locations cannot be avoided, a Thermometers should be obtained and field installed. suitable metal drain pan should be installed under the water heater. Metal Drain pans are available at your local hardware store. Such a Thermometers are installed in the system as a means of detecting metal drain pan must have a minimum length and width of at least the temperature of the outlet water supply. -
Page 8: High Altitude
Minimum clearances between the water heater and combustible Also, the water heater must be located and/or protected so it is not construction are 0″ at sides and rear, 4″ (102 mm) for CLN075100 subject to physical damage by a moving vehicle. and 5″ (127 mm) for CLN075075 at the front, and 6″ (153 mm) from the vent pipe. Clearance from the top of jacket is 12″ (305 mm). FIGURE 2. This water heater must not be installed directly on carpeting. Carpeting must be protected by metal or wood panel beneath the water heater extending beyond the full width and depth of the water heater by at least 3” (76.2 mm) in any direction, or if the water heater is installed in an... -
Page 9: Insulation Blankets
INSULATION BLANKETS CIRCULATION PUMPS A circulating pump is used when a system requires a circulating loop or there is a storage tank used in conjunction with the water heater. See Water Piping Diagrams in this manual for installation location of circulating pumps. Breathing Hazard - Carbon Monoxide Gas See the Circulation Pump Wiring Diagrams below for electrical Do not obstruct water heater air intake hookup information. Install in accordance with the current with insulating blanket. -
Page 10: Installation Requirements
GAS PRESSURE REQUIREMENTS at the water heater or at hot water taps to further reduce system water temperature. See Figure 6. CLN075100 natural gas model requires a minimum gas supply Mixing valves are available at plumbing supply stores. Consult pressure of 5” w.c. (1.25 kPa); CLN075075 natural gas model requires a Qualified Installer or Service Technician. Follow mixing valve a minimum gas supply pressure of 6” w.c. (1.49 kPa). The minimum manufacturer’s instructions for installation of the valves. supply pressure is measured while gas is flowing (dynamic pressure). The supply pressure (dynamic) should never fall below the specified TABLE 2. -
Page 11: Water Piping
WATER PIPING WATER (POTABLE) HEATING AND SPACE HEATING This water heater shall not be connected to any heating systems or component(s) used with a non-potable water heating appliance. All piping components connected to this unit for space heating applications shall be suitable for use with potable water. Toxic chemicals, such as those used for boiler treatment shall not be introduced into this system. When the system requires water for space heating at temperatures higher than required for domestic water purposes, a mixing valve must be installed. Please refer to Figure 6 for suggested piping arrangement. These water heaters cannot be used in space heating applications FIGURE 7. only. NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that di-electric unions CLOSED WATER SYSTEMS or couplings be installed on this water heater when connected to copper pipe. -
Page 12: Filling The Water Heater
NOTE: The purpose of a Temperature-Pressure Relief Valve is to NOTE: In addition to the factory installed Temperature-Pressure prevent excessive temperatures and pressures in the storage tank. Relief Valve on the water heater, each remote storage tank that The T&P valve is not intended for the constant relief of thermal may be installed and piped to a water heating appliance must also expansion. A properly sized thermal expansion tank must be installed have its own properly sized, rated and approved Temperature- on all closed systems to control thermal expansion, see Closed Pressure Relief Valve installed. Call the toll free technical support Water Systems and Thermal Expansion on page 11. -
Page 13: Unconfined Space
OUTDOOR AIR THROUGH TWO OPENINGS amount of combustion air can result in a fire or explosion and cause property damage, serious bodily injury or death. UNCONFINED SPACE An Unconfined Space is one whose volume is not less than 50 cubic feet per 1,000 Btu/hr (4.8 cubic meters per kW) of the total input rating of all appliances installed in the space. Rooms communicating directly with the space, in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space. -
Page 14: Outdoor Air Through Two Horizontal Ducts
OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS enclosure. The vertical ducts shall communicate directly with the outdoors. See Figure 11. Each duct opening shall have a minimum free area of 1 square inch per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure. When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches. AIR FROM OTHER INDOOR SPACES FIGURE 10. The confined space shall be provided with two permanent horizontal ducts, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. The horizontal ducts shall communicate directly with the outdoors. See Figure 10. - Page 15 If the water heater is being installed as a replacement for an The vent pipe from the water heater must be no less than the existing heater in pre-existing venting, a thorough inspection of diameter of the draft hood outlet on the water heater and must existing venting system must be performed prior to any installation slope upward at least 1/4 inch per linear foot (21 mm per meter). work.
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Page 16: Gas Piping
GAS PIPING TABLE 4. NOMINAL IRON PIPE SIZES (INCHES) LENGTH INPUT IN KW METERS 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3" 4" 1160 1845 3221 6735 1277 2255 4626 1031 1830 3748 1552 3192 1391 2840 1259 2577 1142... -
Page 17: Sediment Traps
SEDIMENT TRAPS Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion. Before A sediment trap shall be installed as close to the inlet of the water attaching the gas line be sure that all gas pipe is clean on the heater as practical at the time of water heater installation. The inside. To trap any dirt or foreign material in the gas supply line, sediment trap shall be either a tee fitting with a capped nipple a sediment trap must be incorporated in the piping. The sediment in the bottom outlet or other device recognized as an effective trap must be readily accessible. Install in accordance with the sediment trap. If a tee fitting is used, it shall be installed in “Gas Piping” section. Refer to the current edition of the National conformance with one of the methods of installation shown in... -
Page 18: Lighting & Operating Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. FLAMMABLE BEFORE LIGHTING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES This appliance has a pilot which is lit by a piezo- If you cannot reach your gas supplier, call the fire electric spark gas ignition system. -
Page 19: Temperature Regulation
TEMPERATURE REGULATION Short repeated heating cycles caused by small hot water uses can Never allow small children to use a hot water tap, or to draw their own bath water. Never leave a child or handicapped person unattended cause temperatures at the point of use to exceed the thermostat in a bathtub or shower. setting by up to 30°F (16.7°C). If you experience this type of use you should consider using lower temperature settings to reduce NOTE: A water temperature range of 120°F-140°F (49°C-60°C) is... -
Page 20: Operational Conditions
BTU Per Approx. Time Required To Model Type of Gas Cu. Ft. Consume 1 Cu. Ft. of Gas a. A concentration of sulfate in the supply water. CLN075075 Natural 1050 50.3 sec. CLN075100 b. Little or no dissolved oxygen in the water. c. A sulfate reducing bacteria which has accumulated within the Use this formula to “clock” the meter. Be sure that other gas water heater (this harmless bacteria is nontoxic to humans). -
Page 21: Periodic Maintenance
PERIODIC MAINTENANCE VENTING SYSTEM INSPECTION Flame Characteristics Correct Flame Red/Orange FIGURE 19. Natural Gas (Low Nox) Burner Door Assembly Use brush on this surface Burner Pilot Assembly At least once a year a visual inspection should be made of the venting system. You should look for: 1. Obstructions which could cause improper venting. The FIGURE 20. combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which could cause improper venting BURNER CLEANING or leakage of combustion products. -
Page 22: Anode Rod Inspection
ANODE ROD INSPECTION If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater and drain the water heater, see CAUTION Draining And Flushing on page 24. Replace the Temperature- Pressure Relief Valve with a properly rated/sized new one, see Property Damage Hazard Temperature-Pressure Relief Valve on page 11 for instructions on replacement. • Avoid water heater damage. • Inspection and replacement of anode rod required. -
Page 23: Deliming Solvents
The time between cleaning will vary from weeks to months depending upon water conditions and usage. Burn harzard. The depth of lime buildup should be measured periodically. Heaters equipped with cleanouts will have about 2” of lime buildup when the level of lime has reached the bottom of the cleanout opening. A Hot water discharge. schedule for deliming should then be set up,based on the amount of time it would take for a 1” buildup of lime. It is recommended that the water heater initially be inspected after 6 months. Keep hands clear of drain Example 1: valve discharge. Initial inspection after 6 months shows 1/2” of lime accumulation. Therefore, the heater should be delimed once a year. Example 2: TO DRAIN THE WATER HEATER STORAGE TANK: Initial inspection after 6 months shows 2” of lime accumulation. -
Page 24: Leakage Checkpoints
LEAKAGE CHECKPOINTS A. Water at the draft hood is water vapor which has condensed out of the combustion products. This is caused by a problem in the vent. Contact the gas utility. B. *Condensation may be seen on pipes in humid weather or pipe connections may be leaking. C. *The anode rod fitting may be leaking. D. Small amounts of water from temperature-pressure relief valve may be due to thermal expansion or high water pressure in your area. E. *The temperature-pressure relief valve may be leaking at the tank fitting. F. Water from a drain valve may be due to the valve being slightly opened. G. * The drain valve may be leaking at the tank fitting. H. Combustion products contain water vapor which can condense on the cooler surfaces of the tank. Droplets form and drip onto the burner or run on the floor. This is common at the time of start-up after installation and when incoming water is cold. -
Page 25: Troubleshooting Guidelines
TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualified service agent. Problem Cause Solution Improperly sealed, hot or cold supply connection, relief Tighten threaded connections. valve, drain valve, or thermostat threads. WATER LEAKS Leakage from other appliances or water lines. Inspect other appliances near water heater. Condensation of flue products. Refer to CONDENSATION. Thermal expansion in closed water system. Install thermal expansion tank (DO NOT plug T&P valve). LEAKING T&P VALVE Check relief valve for proper operation Improperly seated valve. (DO NOT plug T&P valve). High sulfate or mineral content in water supply. -
Page 26: Water Piping Diagrams
WATER PIPING DIAGRAMS... -
Page 32: Notes
NOTES... - Page 33 NOTES...
- Page 34 NOTES...
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Page 35: Warranty
If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first THREE years after initial installation, the warrantor will supply a complete new Lochinvar water heater of equivalent size and current model at the warrantor's option. - Page 36 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 Technical Service email: 2tech@lochinvar.com www.Lochinvar.com Copyright © 2015 Lochinvar, LLC, All rights reserved.
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