Users Manual
Contents
1. to the pump Instead shut off the gas supply at a location external to the appliance Installation and service must be performed by a qualified installer service agency or the gas supplier LIGHTING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATING A WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do not touch any electric switch do not use any phone in your building e Immediately call your gas supplier from a neighbors phone e Follow the gas supplier s instructions e If you cannot reach your gas supplier call the fire department This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand BEFORE OPERATING smell around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle to the floor Use only your hand to turn the gas control lever Never use tools If the lever will not turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the contr2. EB EW USER Rev B USER MANUAL HOT WATER HEATING BOILERS Domestic Water Heaters A 150 000 300 000 Btu hr MODELS LOW LEAD CONTENT FIG 1 Front View FIG 2 Rear View A WARNING A OWNER WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life The information contained in this manual is intended for use by qualified professional installers service technicians or gas suppliers Consult your local expert This appliance MUST NOT be installed in any location for proper installation or service procedures where gasoline or flammable vapors are likely to be present unless the installation is such to eliminate the probable ignition of gasoline or flammable vapors DO NOT WHAT TO DO IF YOU SMELL GAS Do not use this appliance if any part has been under water The possible damage to a flooded appliance can be exten sive and present numerous safety hazards Any appliance that has been under water must be replaced Do not try to light any appliance Do not touch any electric switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s A WARNING phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Should overheating occur or the gas supply fail to shut off DO NOT turn off or disconnect the electrical supply
3. N OFF GAS TO APPLIANCE 1 Turn off all electric power to the appliance if service is to be performed 2 Turn the gas control knob on the gas valve clockwise to the OFF position Do not force MAINTENANCE Listed below are items that must be checked to ensure safe reliable operations Verify proper operation after servicing A CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation 1 Examine the venting system at least once a year Check more often in first year to determine inspection interval Check all joints and pipe connections for tightness corrosion or deterioration Clean screens in the venting air intake system as required Have the entire system including the venting system periodically inspected by a qualified service agency 2 Using the view port located below the water connections visually check main burner flames at each start up after long shutdown periods or at least every six months A WARNING This area is hot and direct contact could result in burns YELLOW FLAME FIG 4 Burner Flame Patterns a Normal Flame A normal flame is blue with slight yellow tips with a well defined inner cone and no flame lifting b Yellow Tip Yellow tip can be caused by blockage or partial obstruction of air flow to the burner s c Yellow Flames Yellow flames can be caused by blockage of primary air flow to the bur
4. fan should start Leave the gas valve OFF l l d Tighten combustion air blower mounting nuts J With the combustion air fan running the gauge will read a system differential pressure The proper differential L Turn the power switch to OFF position pressure should be in the following range depending upon length of pipe used Remove gauge and tee connections ensuring connections are made at the pressure switch correctly the chamber pressure to the connection and the TABLE B burner venturi pressure to the connection DIFFERENTIAL AIR PRESSURE 1 4 1 8 w c O ow O Turn the gas valve knob to ON position Turn the power switch to ON position Replace upper front access door O VOZ When the main burner lights observe the burner flame 199 999 1 4 1 8 w c i l i through observation port Flames should be light blue in 250 000 1 5 1 9 w c color with slight yellow tips flames should be settled on 300 000 15 19 we burner head with no lifting R The appliance is now ready to operate Lochinvar V High Efficiency Water Heaters Boilers and Pool Heaters 300 Maddox Simpson Parkway Lebanon TN 37090 EB EW USER Rev B 615 889 8900 Fax 615 547 1000 06 13 Printed in U S A www Lochinvar com
5. necessary go to step T a Loosen two combustion air blower mounting nuts and slide the air shutter to the specified A dimension See Table A b Tighten the combustion air fan mounting nuts c Proceed to step N to check appliance for proper operation G If the appliance does not function properly after manually K If adjustment is necessary follow these steps If no setting the air shutter use a magnahelic or slope gauge to set adjustment is necessary go to step L the air shutter based on differential air pressure l l a Loosen two combustion air blower mounting nuts to H Install a tee in each of the hoses connecting the chamber pressure allow the air shutter to slide See Figure 5 and burner venturi pressure to the pressure switch Install a connecting hose from the branch of each tee to a manometer magnahelic or slope gauge legible in 0 1 increments up to 3 w c Connect chamber pressure to the positive pressure side of the gauge and burner venturi pressure to the negative side of the gauge c If the differential pressure cannot be obtained shut the appliance down and inspect the vent system both air and flue gas passageways for obstructions or leaks b If differential pressure needs increasing pull the air shutter out with thumb and finger gradually and evenly Push in the air shutter to decrease differential pressure I Turn the power switch to ON position Combustion air
6. ner s or excessive gas input This condition MUST be corrected immediately d Lifting Flames Lifting flames can be caused by over firing the burner s or excessive primary air If improper flame is observed examine the venting system ensure proper gas supply and adjust the combustion air 3 Combustion Air Shutter Adjustment This appliance uses a fan assisted combustion process The fan air shutter is fac tory pre set and should not need adjustment in most cases If adjustment is required the fan air shutter may be manu ally adjusted to a dimension specified for each model Fol low the steps below to adjust the fan air shutter if the appliance does not function properly or a continuous low air condition is observed _ TO PRESSURE SWITCH AV WHITE HOSE a IL MANOMETER AR SHUTTER COMBUSTION CHAMBER TOP FIG 5 Combustion Air Shutter Adjustment A Check for proper installation and draft in system Correct as required venting B Remove upper front access door C Turn the power switch to the OFF position D Turn the gas valve knob to the OFF position E Use a ruler to measure the distance from the base of the fan to the end of the air shutter Compare this distance to the specified A dimension for the appliance TABLE A AIR SHUTTER ADJUSTMENT OPENING Btu hr Input A Dimension Opening F If adjustment is necessary follow these steps If no adjustment is
7. ol system and any gas control which has been under water LIGHTING INSTRUCTIONS L A STOP Read the safety information above Turn off all electrical power to the appliance 2 J 4 Remove the upper front access panel Turn the power switch on the inside of the cabinet to OFF position Set the thermostat to the lowest setting This appliance is equipped with an ignition device which automatically lights the burners DO NOT try to light the burners by hand Turn the gas control knob on the gas valve clockwise to the OFF position 2 REFERENCE HOSE CONNECTION PRESSURE REGUALTOR ADJUSTMENT WIRING TERMINALS 2 UNDER CAP SCREW OUTLET PRESSURE TAP INLET PRESSURE TAP _ GAS CONTROL KNOB FIG 3 Combination Gas Valve 8 Wait five 5 minutes to clear out any gas If you smell gas STOP Follow the instructions in the safety information What To Do If You Smell Gas If you don t smell gas go on to the next step 9 Turn the gas control knob on the gas valve counterclockwise to the ON position 10 Set the thermostat to the desired setting 11 Turn the power switch on the inside of the cabinet to the ON position 12 Replace control access panel 13 Turn on all electrical power to the appliance 14 If the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO TUR
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