Lennox International Inc. AM30 User's Manual
Contents
1. Air Handling Heating Module Air Conditioner Module Page 2 SAFETY CONSIDERATIONS Consider the materials stored near to the CompleteHeat system Make sure the area around both AM30 and HM30 units has adequate space according to the prescribed clearances DO NOT store combustible materials such as newspapers rags mops or flammable liquids such as gasoline kerosene paint thinner near this or any other heating appliance A DANGER Vapors from flammable liquids will explode and catch fire causing death or severe burns FOR YOUR SAFETY Do not store or use gasoline or other flammable combustible or corrosive vapors and liquids in the vicinity of this appliance Keep flammable products Vapors 1 far away from heater 1 cannot be seen 2 in approved containers 2 are heavier than air 3 tightly closed and 3 go along way on the floor and 4 out of children s reach 4 can be carried from other rooms to the heater by air currents A DANGER Water temperature over 125 F can cause severe burns instantly or death from scalds Children disabled and elderly are at high risk of being scalded See the Adjusting Water Temperature section in this manual before setting temperature at heat module HM30 unit Feel water before bathing or showering Temperature limiting valves are available and are recom mended for all applications A WARNING Risk of Explosion Can Cause Injury or Death Hydrogen gas c2. clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 8 Turn knob on gas valve 180 either way to ON 9 Replace HM30 top cover 10 Turn on all electrical power to system 11 Set room thermostat and water temperature dial to desired settings NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line The AM30 will not supply warm air until the water temperature in the HM30 tank is within 15 F 8 33 C of the desired water thermostat setpoint 12 If the HM30 module will not operate follow the instructions To Turn Off Gas To Unit and call your service technician or gas supplier TO SHUT OFF THE CompleteHeat SYSTEM 1 Set room thermostat and water temperature dial to lowest settings 2 Turn off all electrical power to CompleteHeat system AM30 and HM30 3 Remove HM30 top cover to locate gas valve 4 Turn knob on gas valve 180 either way to OFE Do not force 5 Replace HM30 top cover and unit access panel Page 4 HOW TO SET THE ROOM THERMOSTAT Your thermostat may vary from this example however the operation is similar TEMPERATURE SETTING LEVERS Simply set the indicator lever or dial on the thermostat to the desired temperature for heating and cooling modes FAN SWITCH In AUTO or INT setting the blower ru
3. tells the combustion air blower to draw in outside air for use in combustion After a short safety delay a fuel mix ture is sent into the burner where it is ignited by an electronic spark Burning fuel moves through the stainless steel heat exchanger inside the water storage tank The water surrounding the heat exchanger is heated until the water temperature reaches the desired setpoint on the water thermostat dial Combustion products travel out of the heat exchanger condensate water is drained and exhaust gases are vented safely to the outdoors Hot water is directed from the HM30 to faucets shower heads and appliances such as the dishwasher and washing machine through the plumbing located on top of the HM30 unit When the room thermostat senses a need for heat the AM30 water circulating pump draws hot water from the HM30 heating module and routed through the AM30 space heating coil The aluminium and copper coil absorbs heat from the water The blower turns on and extracts heat from the coil Warmed air is sent through the air duct system into the home Water circulates back to the HM30 unit to be reheated until the room temperature reaches the thermostat setting CompleteHeat Typical Applications Upflow Close Coupled Installation Horizontal Remotely Located Installation with Cooling Coil with Cooling Coil Air Conditioner AM30 Air Handling Module HM30 Heating Module AM30 HM30 ee
4. INTRODUCTION The CompleteHeat Combination Heating System Congratulations on the purchase of your Lennox CompleteHeat system Lennox takes pride in manufacturing high quality products that keep you comfortable while saving you energy and money The CompleteHeat system is a high efficiency combination water and space heating system The system consists of an air module AM30 and a heating module HM30 The two units work together to provide warm air like a fur nace and hot potable water like a hot water heater The CompleteHeat system takes care of these needs while being up to 40 more efficient than standard furnaces and water heaters This booklet explains the CompleteHeat system how to identify the units model number how to operate a typical thermostat and how to maintain the system for optimum performance Keep this booklet and the warranty shipped with the CompleteHeat system for future reference Thank you again for choosing Lennox Page 1 HOW THE CompleteHeat SYSTEM WORKS The CompleteHeat system consists of a heating module HM30 that produces hot water and an air han dling module AM30 that sends warmed air through the home s duct system The two modules may be installed together close coupled or apart remote The system s operation begins when cold potable water fills the water storage tank through the pipe at the top of the HM30 unit When heat is needed to produce warm water or air the HM30 control
5. an be produced in a hot water system that has not been used for a long period of time generally two weeks or more Hydrogen gas is extremely Flammable To prevent the possibility of injury under these conditions we recommend the hot water faucet be open for several minutes at the kitchen sink before using any electrical ap pliance connected to the hot water system If hydrogen is present there will probably be an unusual sound such as air escaping through the pipe as hot water begins to flow There should be no smoking or open flame near the faucet at the time it is open Page 3 TO START THE CompleteHeat SYSTEM A WARNING HM30 GAS VALVE i GAS VALVE If you do not follow these instructions exactly a KNOB SHOWN fire or explosion may result causing property eerie damage personal injury or loss of life 1 STOP Read the safety information at the be ginning of this section 2 Set both room thermostat and water temperature dial to lowest settings 3 Turn off all electrical power to the CompleteHeat system AM30 amp HM30 unit Ask your dealer to identify the disconnect switch or circuit breaker 4 The HM30 unit is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 5 Remove HM30 top cover to locate gas valve 6 Turn knob on gas valve 180 either way to OFF Do not force 7 Wait five 5 minutes to
6. ith an empty water tank Irrepara ble damage to the HM30 unit may occur Page 6 KEEPING YOUR SYSTEM IN TOP FORM CONT A WARNING a Electric shock hazard Can cause injury or death Before attempting to External perform any maintenance turn the Side Return k i f electrical power to unit OFF at dis Filter connect switch es Unit may have multiple power supplies AM30 Air Module and Filters WN a ee Having a clean filter is the most important step in keeping your new heating and air conditioning system working to its full potential Dirt dust and pet hair clog the filter as air cycles through the system Dirty filters make the equipment work harder which causes the unit to use more energy than normal A system with dirty filters will not provide you with the comfort you expect Cleaning or l Internal Bottom replacing the filter is much less expensive than higher Return Air Filter h energy bills or damaged equipment Upflow shown Pull filter door to remove filter Make sure that all the power is OFF to the unit before attempting to change filter Have the dealer 99 show you where your unit s filter is located The a filter may be found either inside or outside the AM30 air module or in the wall at the return air grille If the filter is in the air module it may be inside the unit behind an access panel or located on the side of the u
7. nit in an external filter rack If s replacement is necessary always replace it with the len Remove lower access panel same type of filter If you don t know what filter you aes A need call your Lennox dealer with the model KS up and out number of the unit The dealer will be able to tellyou s N 4 QS The filter shipped with the AM30 unit is reusable and can be cleaned with a mild soap and water The filter should be completely dried before being returned to the what type and size filter you need unit When replacing look for the airflow direction arrow marked on the filter Disposable filters used at the return air grille cannot be cleaned but should be replaced every month During times of heavy usage it is beneficial to vacuum the filter in between changes or cleanings Your system may include an electronic air cleaner which rids your home of even the smallest particles of dirt dust and pollen Ask your Lennox dealer to instruct you on its maintenance Page 7 KEEPING YOUR SYSTEM IN TOP FORM CONT HM30 Temperature Pressure Relief Valve Testing TEMPERATURE PRESSURE T amp P RELIEF VALVE TESTING PROCEDURE This valve is a safety device to protect E against abnormally high temperature Lift up to discharge water and pressures Periodic discharge of Temperature amp Pressure t 2 the relief valve may indicate thermal KENEL valve t x expansion within a closed
8. ns only when the thermostat calls for either heating or cooling The ON or CONT setting runs the blower for constant air circulation and filtering regardless of whether the equipment is heating or cooling If your thermostat does not have ON or CONT settings and the continuous fan option is desired ask your dealer about an optional continuous fan switch In high humidity areas the continuous fan operation tends to increase indoor humidity levels ask your dealer which setting is best for your area Temperature Setting Levers SYSTEM SWITCH Set the system switch for either heating cooling or auto if available Auto changeover is a setting that allows the system to heat or cool depending on the need without manually switching from one to another This setting is useful during seasonal changes when heating may be needed in the morning and cooling in the afternoon TEMPERATURE INDICATOR The temperature indicator needle shows the actual room temperature System Switch Temperature Indicator 50 60 70 80 90 50 60 70 80 90 F 10 20 30 Cc 10 20 30 HEATING COOLING 50 60 70 80 90 C gt orr J _ ooo 10 20 30 HEAT AUTO FAN AUTO ON SYSTEM ENERGY Fan Switch Hinged Door Shown Removed for Detail PROGRAMMABLE THERMOSTATS Many systems are installed with a programmable thermostat These thermostats pro
9. od The submerged rod sacrifices itself to protect the stainless steel tank Instead of corroding the tank water ions attack and eat away the anode rod This does not affect the water s taste or color The rod must be maintained to keep the tank in prime condition Failure to inspect and or replace the anode rod will result in voiding the warranty Anode deterioration depends on water conductivity not necessarily water condition It may be neces sary to have the anode rod inspected a few times during the first year to see what effect the water has had Acorroded or pitted anode rod in the first year indicates high water conductivity and should be checked and or replaced more often than an anode rod that appears to be fairly clean Inspection should be con ducted by your Lennox dealer or qualified technician HM30 Tank Draining Procedure It is recommended that 5 to 10 gallons of water from the HM30 tank be drained every six months to re move any sediment This may need to be done more often in areas of poor water condition 1 Turn off power to unit and allow water temperature in HM30 tank to cool 2 Remove HM30 access panel 3 Connect hose to drain valve and route to open drain 4 Open drain valve to allow water to flow 5 After draining close drain valve and disconnect hose Replace access panel 6 Fill tank with water and re apply power to the unit DO NOT re apply power to a dry tank The burner should never operate w
10. system 2 9 Drain Line A thermal expansion tank will be needed to allow water to expand I If the valve discharges it is doing so because there is a problem Call your Lennox dealer or qualified technician to inspect the unit for proper operation Do not ignore the water dis HM30 Top Access Cover charge Never plug the T amp P relief valve A WARNING Danger of Personal Injury from Scalding T amp P Valve Water from T amp P relief valve may be ex Drain Line tremely hot and is not tempered Use ex treme caution when discharging valve Re placement of T amp P valve should be done by HM30 a trained professional or a licensed plumb Unit ing contractor WARNING Water from T amp P valve testing should be done annual m a E a e ly Remove HM30 top access panel Lo discharging valve cate the temperature and pressure relief valve 5 Drain Test the T amp P valve by lifting the lever L up until the valve unseats This allows the water to discharge Never open the T amp P valve unless it is connected to a discharge line Ifwater does not flow valve may be obstructed or corroded Call your Lennox dealer or qualified techni cian to inspect the valve Page 8 BEFORE CALLING FOR SERVICE Check to see that electrical disconnect switches are ON Make sure the room thermostat tempera
11. ture selector and water temperature dial are properly set The room thermostat system switch should be in the ON position Replace any blown fuses or reset circuit breakers Air filter should be clean 6 Write down the unit model number before calling To keep your heating and cooling system running in peak operating condition year after year contact your independent Lennox dealer about a service and maintenance program Have the Lennox dealer fill out this information for future reference AM30 Model Serial HM30 Model Serial Installer Phone Date Installed Filter Size and Type Page 9
12. vide the same SYSTEM and FAN control as standard thermostats but also provide the feature of setting certain temperatures for different times of the day or days of the week Most provide for the selection of both heating and cooling set points the temperature at which you want that mode to come on Refer to the separate instructions provided with your programmable thermostat for operation and adjustments Page 5 ADJUSTING WATER TEMPERATURE Remove the HM30 access panel The water temperature dialislo cated at the lower left hand side of the HM30 control box It is fac NOTICE tory set at 120 F 49 C Water temperature setting may be raised READ THE WATER TEMPERATURE ACCESS PANEL BEFORE CHANGING by turning dial clockwise to the desired setting Temperature set THE TEMPERATURE ADJUSTMENT tings are marked from 110 F 43 C to 140 F 60 C Each dash mark represents an increase of 10 F 5 6 C Some local building codes limit the temperature of potable water to 120 F 49 C Ask your Lennox dealer for information on highest allowable water temperatures and the use of anti scald and point of use water WATER mixing valves These valves help reduce the risk of scalding TEMP ADJUSTMENT 5357401 KEEPING YOUR SYSTEM IN TOP FORM HM30 Anode Rod Maintenance The anode rod is used to protect the tank from corrosion Most hot water tanks are equipped with an anode r
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