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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
performed by a
service agency or the gas supplier.
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
plaCe these instruCtions adjaCent to heater and notify owner to keep for future referenCe.
PRINTED 1112
and
service
must
qualified
installer,
Complies with sCaQmd low nox rule 1146.2
be
instruction manual
Cln275085(a), Cln310085(a),
Cln366085(a), Cln400085(a)
ultra low nox series 104
installation - operation - serViCe
- maintenanCe - limited warranty
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.
models
325016-000

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Summary of Contents for Lochinvar CLN275085(A)

  • Page 1 Lebanon, TN 37090 installation - operation - serViCe Phone: 615-889-8900 • Fax: 615-547-1000 - maintenanCe - limited warranty Technical Service email: 2tech@lochinvar.com Complies with sCaQmd low nox rule 1146.2 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.
  • Page 2 table of Contents SAFe InSTAllATIOn, USe AnD SerVICe......3 Outdoor Air Through Two Openings ........16 APPrOVAlS ................3 Outdoor Air Through One Opening ........16 generAl SAFeTY InFOrMATIOn ......... 4 Outdoor Air Through Two Horizontal Ducts ......16 Precautions ................5 Outdoor Air Through Two Vertical Ducts ......
  • Page 3 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.
  • Page 4 general safety information Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Do not install water heater on Avoid all ignition sources if you smell gas.
  • Page 5 general safety information Read and understand this instruction Explosion Hazard manual and the safety messages herein before installing, operating or Overheated water can cause servicing this water heater. water tank explosion. Failure to follow these instructions and Properly sized temperature and safety messages could result in death pressure relief valve must be or serious injury.
  • Page 6 introduCtion Thank You for purchasing this water heater. Properly installed preparing for the installation and maintained, it should give you years of trouble free service. 1. read the "general Safety Information" section, pages 4-5 of this manual first and then the entire manual carefully. If you abbreViations used don’t follow the safety rules, the water heater will not operate properly.
  • Page 7 features and Components Controls Contact your dealer or service agent if continued high limit switch operation occurs. RESET BUTTON FUSE LIGHTS digital thermostat figure 3. eleCtroniC ignition Control each heater is equipped with an ignition control. The solid state ignition control (Figure 4), ignites the burner by utilizing a spark igniter.
  • Page 8 installation Considerations rough in dimensions TOP OUTLET TOP INLET 1 1/2" NPT 1 1/2" NPT 1 1/2" TOP VIEW BACK VIEW FRONT VIEW figure 6. table 1. rough-in-dimensions Cln275085(A) Cln310085(A) Cln366085(A) Cln400085(A) Model Dim. inches inches inches inches 16 1/4 41.2 16 1/4 41.2...
  • Page 9 loCating the water heater Do not install this water heater directly on a carpeted floor. A fire hazard may result. Instead the water heater must be placed on a metal or wood panel extending beyond the full width and depth by CAUTION at least 3 inches in any direction.
  • Page 10 insulation blanket Breathing Hazard - Carbon Monoxide Gas Do not obstruct water heater air intake with insulating blanket. Gas and carbon monoxide detectors are available. Install water heater in accordance with the instruction manual. Breathing carbon monoxide can cause brain damage or death.
  • Page 11 high altitude installations Some circulating pumps are manufactured with sealed bearings and do not require further lubrication. Some circulating pumps must be periodically oiled. refer to the pump manufacturer’s instructions for lubrication requirements. Fire and Explosion Hazard CIRCULATING PUMP WIRING DIAGRAM CIRCULATING PUMP WIRING DIAGRAM DISHWASHER LOOP WITH TOGGLE SWITCH STORAGE TANK OR BUILDING RECIRCULATION...
  • Page 12 installation reQuirements Some addition adjustment maybe required later to maintain gas supply systems a steady gas supply pressure. low pressure building gas supply systems are defined as those When installing multiple water heaters in the same gas systems that cannot under any circumstances exceed 14” W.C. supply system it is recommended that individual positive (3.49 kPa) (1/2 PSI gauge).
  • Page 13 expansion. Contact a local plumbing service agency to have a thermal expansion tank installed. HOT WATER See Water line Connections on page 20 and Water Piping OUTLET Diagrams on page 34. 12” TO 15” (30-38 cm) temperature-pressure relief ValVe TEMPERED WATER OUTLET CHECK COLD...
  • Page 14 no valve or other obstruction is to be placed between the see Closed Water Systems and Thermal expansion on page 13. Temperature-Pressure relief Valve and the tank. Do not connect If you do not understand these instructions or have any questions discharge piping directly to the drain unless a 6”...
  • Page 15 air reQuirements provide combustion, ventilation and dilution air. unusually tight Construction In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue Breathing Hazard - Carbon Monoxide Gas gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor Install water heater in accordance with barrier, etc.) additional air must be provided using the methods...
  • Page 16 multiple heater manifold outdoor air through one opening Figure 13 and tables on pages 18 and 19 should be used for horizontally manifolding two or more heaters. figure 15. Alternatively a single permanent opening, commencing within 12 inches (300 mm) of the top of the enclosure, shall be provided. figure 13.
  • Page 17 outdoor air through two VertiCal duCts 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 illustrations shown in this section of the manual are a The minimum dimension of rectangular air ducts shall be not less reference for the openings that provide fresh air into confined than 3 inches.
  • Page 18 table 6. teChniCal data Venting type b gas Vent multiple gas fired tank-type heaters When venting multiple tank type heaters using Type b vent pipe, follow the installation diagram (figure 13) and tables below which give sizing and data based upon nFPA 54/AnSI Z223.
  • Page 19 table 7. teChniCal data Venting (Continued) Model Cln400085(A) Input: 390,000 btu/hr Total Vent Height (Feet) Vent connector size: 6 inches Input (btu/hr) Rise Vent Connector Diameter (Inches) 390,000 1 Ft. 390,000 2 Ft. 390,000 3 Ft. number of Heaters Combined Input (btu/hr) Manifold and Common Vent Diameter (Inches) 780,000 1,170,000...
  • Page 20 water heater installation water line ConneCtions t&p ValVe disCharge pipe The water piping installation must conform to these instructions and to all local code authority having jurisdiction. good practice requires that all heavy piping be supported. read and observe all requirements in the following sections Explosion Hazard before installation of the water piping begins: Temperature-Pressure Relief Valve...
  • Page 21 installation diagrams - top inlet/outlet usage temperature setting should exCeed safe use temperature at fixtures. see water Use of the top inlet water connection requires an inlet dip tube temperature Control and mixing ValVes on (refer to figure 19). The tube is supplied in the heater. Follow page 12.
  • Page 22 heater wiring All electrical work must be installed in accordance with the latest version of the national electrical Code AnSI/nFPA no. 70 and must conform to all local code authority having jurisdiction. An eleCTrICAl grOUnD IS reqUIreD TO reDUCe rISK OF eleCTrICAl SHOCK Or POSSIble eleCTrOCUTIOn.
  • Page 23 gas piping gas meter size – natural gases only be sure the gas meter has sufficient capacity to supply the full rated Contact your local gas service company to ensure that adequate gas input of the water heater as well as the requirements of all other gas service is available and to review applicable installation codes gas fired equipment supplied by the meter.
  • Page 24 start up prior to start up initial start up Installation and start up of this water heater requires abilities required test equipment and skills equivalent to that of a licensed tradesman in the field U-tube manometer, pressure gauge, or digital manometer. involved, see qualifications on page 6.
  • Page 25 Supply gas pressure shall be measured while the water heater 7. If improper venting is observed during any of the above tests, is not firing (static pressure) and while the water heater is firing the venting system must be corrected. at full capacity (dynamic pressure).
  • Page 26 seQuenCe of operation The following information will describe the Sequence of Operation 8. If the Flame Sensor does not detect a strong enough flame, the for this water heater. Ignition Control shuts off the gas Valve and allows the blower to purge the unit for 30 seconds.
  • Page 27 seQuenCe of operation flow Chart Description of this flow chart can be found in the “SeqUenCe OF OPerATIOn” section found on page 26. Switch power on to unit Thermostat calls for heat VFD sends power to Blower Blower engages Prover Switch Blower runs at low speed After 30 seconds, Ignition Control provides power to...
  • Page 28 maintenanCe Venting system expansion on page 13. The Temperature-Pressure relief Valve is not intended for the constant relief of thermal expansion. examine the venting system every six months for obstructions Temperature-Pressure relief Valve leakage due to pressure build and/or deterioration of the vent piping. Check all vent system up in a closed system that does not have a thermal expansion connections for leakage and repair or reseal as necessary.
  • Page 29 draining and flushing 12. Turn on the gas supply to the water heater at the Main gas Shutoff Valve. 13. Allow the water heater to complete several heating cycles to ensure it is operating properly. Burn harzard. periodiC remoVal of lime deposits from Hot water discharge.
  • Page 30 tank Cleanout proCedure Drain heater. remove outer cover plate from lower side of heater jacket. The following practices will ensure longer life and enable the unit remove six (6) hex head screws securing tank cleanout to operate at its designed efficiency: plate and remove plate.
  • Page 31 for your information start up Conditions Contact the local water heater supplier or service agency for further information concerning an Anode replacement Kit and smoke/odor this chlorination treatment. It is not uncommon to experience a small amount of smoke and If hot water odor persists after anode replacement and chlorination odor during the initial start-up.
  • Page 32 troubleshooting remedy Complaint Cause user Qualified serViCe agenCy *Water not hot enough Thermostat set too low. Set thermostat dial to a higher temperature Upper and/or lower temperature Call qualified service agency Check continuity and resistance (Ohms) probe out of calibration. of upper and lower temperature probes.
  • Page 33 water piping diagrams...
  • Page 43 STORAGE TANK...
  • Page 46 STORAGE TANK...
  • Page 48 manifold kits Model Dimension "A" All Models 76 in. (193 cm)
  • Page 49 notes...
  • Page 50 notes...
  • Page 51 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 52 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 Technical Service email: 2tech@lochinvar.com www.lochinvar.com Copyright © 2012 lochinvar, llC, All rights reserved.