User Manual
Contents
1. 8 3 OPERATING INSTRUCTIONS 9 4 SMART SYSTEM CONTROL MODULE SMART SYSTEM Control Module 10 Access Modes 10 Saving Parameters 10 Adjusting Parameters 10 11 Status Display Screens 12 14 Notes 15 Revision Notes Back Cover User s Information Manual Please read before proceeding The Knight Boiler Installation and Operation Manual along with the Knight Boiler Service Manual are for use only by a qualified heating installer service technician Refer only to this User s Information Manual for your reference Improper installation adjustment alteration service or maintenance can cause property damage personal injury exposure to hazardous materials or loss of life Installation and service must be performed by a qualified installer service agency or the gas supplier who must read and follow the supplied instruction before installing servicing or removing this boiler This boiler contains materials that have been identified as carcinogenic or possibly carcinogenic to humans2. Verify flue and air lines in good condition and sealed tight Check system water pressure system piping expansion tank Check control settings Ignition and flame sense electrodes sand off any deposits clean and reposition Wiring and connections Perform start up checkout and performance verification per Section 10 in the Knight Installation and Operation Manual Flame inspection stable uniform Flame signal at least 4 mA Clean the heat exchanger if flue temperature is more than 54 F above return water temperature If combustion or performance indicate need Clean heat exchanger Remove and clean burner using compressed air only Clean the blower wheel Owner maintenance see pages 6 8 for detailed instructions Daily Check boiler area Check pressure temperature gauge Monthly Check vent piping Check air piping Check air and vent termination screens Check relief valve Check condensate drain system Check air vents Periodically Test low water cutoff if used Reset button low water cutoff Every 6 months Check boiler piping gas and water for leaks Operate relief valve End of season months Shut boiler down unless boiler used for domestic hot water WARNING Follow the maintenance procedures given throughout this manual Failure to perform the service and
3. Figure 3 Manual Air Vent MANUAL AIR VENT VALVE User s Information Manual 9 3 Operating instructions o C NAVIGATION DIAL Figure 4 Control Panel Knight boiler control module Use the control panel FIG 4 to set temperatures operating conditions and monitor boiler operation 4 SMART SYSTEM control module 10 User s Information Manual The information on the bottom of the display shows the functions of the two SELECT keys on either corner and the NAVIGATION dial in the center MENU Left SELECT Key SETPOINTS NAVIGATION Dial Pressing Down SHDN Right SELECT Key Access modes User The user can adjust space heating and tank target temperatures by pressing the NAVIGATION dial when SETPOINTS is flashing at the bottom of the display The user can adjust the date and time temperature units and night setback override if active by pressing the LEFT SELECT MENU key for 5 seconds When the user password 0000 appears then press the RIGHT SELECT SAVE key do not change the password Installer Most parameters are available only to the installer accessible only by entering the installer password see the Knight Boiler Service Manual Saving parameters Press the RIGHT SELECT SAVE key one time to return to the parameter listing Press the RIGHT SELECT HOME key again to store the new settings and return to the Status S
4. Failure to adhere to the guidelines on this page can result in severe personal injury death or substantial property damage Boiler service and maintenance To avoid electric shock disconnect electrical supply before performing maintenance To avoid severe burns allow boiler to cool before performing maintenance Boiler operation Do not block flow of combustion or ventilation air to the boiler This boiler is equipped with a control which will automatically shut down the boiler should air or vent be blocked If vent or air blockage is easily accessible and removable remove it The boiler should attempt to restart If blockage is not obvious or cannot be removed have the boiler and system checked by a qualified service technician Should overheating occur or gas supply fail to shut off do not turn off or disconnect electrical supply to the circulator Instead shut off the gas supply at a location external to the appliance Do not use this boiler if any part has been under water The possible damage to a flooded appliance can be extensive and present numerous safety hazards Any appliance that has been under water must be replaced Boiler water Thoroughly flush the system without boiler connected to remove sediment The high efficiency heat exchanger can be damaged by build up or corrosion due to sediment Do not use petroleum based cleaning or sealing compounds in the boiler s
5. CSA or ULC certified PVC or CPVC pipe fittings and cement 7 A condensate removal pump is required if the boiler is below the drain When installing a condensate pump select one approved for use with condensing boilers and furnaces The pump should have an overflow switch to prevent property damage from condensate spillage Call your qualified service technician to inspect the boiler and system NOTICE NOTICE To allow for proper drainage on large horizontal runs a second line vent may be required and tubing size may need to increase to 1 inch The condensate line must remain unobstructed allowing free flow of condensate If condensate is allowed to freeze in the line or if the line is obstructed in any other manner condensate can exit from the boiler tee resulting in potential water damage to property Call your qualified service technician to inspect the boiler and system IMG00850 1 2 12 7MM PVC ELBOW FIELD SUPPLIED 1 2 12 7MM PVC UNION FACTORY SUPPLIED NEUTRALIZER KIT FLOOR DRAIN OR DRAIN PAN Figure 2 Condensate Disposal User s Information Manual 2 Maintenance schedule 8 WARNING Have leaks fixed at once by a qualified service technician Failure to comply could result in severe personal injury death or substantial property damage Operate relief valve 1 Before proceeding verify that the relief valve outlet has been piped to a safe place of discharge avoiding any possib
6. boiler pump in percent SYS PUMP INPUT The speed signal received from a variable speed system pump control RATE OUTPUT A 0 10V signal indicating the firing rate of the boiler SH RUN HOURS The total hours of operation in the Space Heating Mode SH CYCLES The total burner cycles in the Space Heating Mode DHW RUN HOURS The total hours of operation in the DHW Mode DHW CYCLES The total burner cycles in the DHW Mode LAST 10 FAULTS NO The last 10 lockouts NIGHT SETBACK Shows the next Night Setback trigger if active User s Information Manual 14 4 SMART SYSTEM control module Status Display Screens cont d Section Display Description D LEFT SELECT key function MENU Press and hold the LEFT SELECT key for 5 seconds to enter the Menu Screen EXIT Press the LEFT SELECT key to exit the current screen or setting YES Press the LEFT SELECT key to confirm that the boiler needs to shutdown LIMITS Press the LEFT SELECT key to enter the screen that allows you to adjust the limit settings HOME Press the LEFT SELECT key to return to the Status Screen and upload parameter changes SKIP Press the LEFT SELECT key when in the Night Setback Screen to access the Night Setback Skip Screen E NAVIGATION Dial Function Turning the NAVIGATION dial will select the next or previous Status Screen Pressing the NAVIGATION dial will show the next fault NSB Night Setback trigger or ramp d
7. heat Indicates which room thermostat demand shows priority The unit is being controlled by a 0 10V BMS signal The member unit is supplying heat while in Cascade Mode A C D B F E BOILER STATUS OPERATIONAL INFORMATION LEFT SELECT KEY RIGHT SELECT KEY NAVIGATION DIAL CALL FOR HEAT Figure 5 Status Display Screen 4 SMART SYSTEM control module User s Information Manual 4 SMART SYSTEM control module continued 13 Status Display Screens cont d Section Display Description C Operational Information SYSTEM The temperature read by the system supply sensor if connected TANK The temperature read by the tank sensor if connected OUTDOOR The temperature read by the outdoor sensor INLET TEMP The temperature read at the inlet to the heat exchanger OUTLET TEMP The temperature read at the outlet of the heat exchanger DELTA T The temperature difference between the inlet and the outlet of the heat exchanger FLUE TEMP The temperature read by the flue sensor FLAME CURRENT The current measured by the flame sense circuit FAN SPEED The speed of the combustion blower BOILER PUMP The status of the boiler pump output SYSTEM PUMP The status of the system pump output DHW PUMP The status of the DHW pump output BMS VOLTAGE The voltage received from a BMS system BLR PUMP OUTPUT The speed signal sent to a variable speed
8. period call a qualified service technician to inspect the boiler for possible damage from acid corrosion If products cannot be removed immediately call a qualified service technician to re pipe vent and air piping and locate vent termination air intake away from contaminated areas 1 Combustible flammable materials Do not store combustible materials gasoline or any other flammable vapors or liquids near the boiler Remove immediately if found 2 Air contaminants Products containing chlorine or fluorine if allowed to contaminate the boiler intake air will cause acidic condensate in the boiler This will cause significant damage to the boiler if allowed to continue Read the list of potential materials listed in Table 1 on page 4 of this manual If any of these products are in the room from which the boiler takes its combustion air they must be removed immediately or the boiler combustion air and vent termination must be relocated to another area Check pressure temperature gauge 1 Make sure the pressure reading on the boiler pressure temperature gauge does not exceed 24 psi Higher pressure may indicate a problem with the expansion tank 2 Contact a qualified service technician if problem persists Check vent piping 1 Visually inspect the flue gas vent piping for any signs of blockage leakage or deterioration of the piping Notify your qualified service technician at once if you find any problem
9. F or C This parameter can be changed by the user or the installer by accessing the Temperature Units parameter The default is F To change the temperature units access the clock menu as described in the User section this page Rotate the NAVIGATION dial until the arrow gt is pointing to TEMPERATURE UNIT F Press the NAVIGATION dial once The temperature unit will begin to flash Rotate the NAVIGATION dial until the desired temperature unit is shown Save the new setting as described in the Saving Parameters section page 10 Night Setback Override Any Night Setback On trigger currently active or scheduled within the next seven 7 days can be skipped To skip a trigger rotate the NAVIGATION dial until the arrow gt is next to the trigger you wish to skip Press the NAVIGATION dial once SK will appear next to that trigger to indicate that it will be skipped You can restore an upcoming trigger by selecting that trigger and pressing the NAVIGATION dial again The SK next to that trigger will disappear To save any changes and return to the Home Screen press the RIGHT SELECT HOME key To return to the Status Screen without saving the changes press the LEFT SELECT EXIT key This boiler is equipped with outdoor air reset a feature that saves energy by reducing the boiler water temperature as the heating load decreases Three 3 individual outdoor resets for low outdoor temperatures are available The r
10. User s Information Manual Models 81 286 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 This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a near by 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 WARNING Save this manual for future reference KBII USER Rev F 2 Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product DANGER WARNING CAUTION CAUTION NOTICE DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury CAUTION used without the safety alert s
11. creen Please note that the brackets denote screen status NOTICE Adjusting parameters CAUTION Before changing parameters note the settings so that the unit can be returned to its original operating parameters The control uses an internal clock for the night setback feature and for logging of events For these features to work properly the clock must be set when the boiler is first installed or any time the boiler has been powered off for more than four 4 hours This parameter must be accessed to set the clock NOTICE The internal clock does not adjust for Daylight Savings Time and therefore will require a manual adjustment To set the clock access the clock menu as described in the User section Rotate the NAVIGATION dial if needed until the arrow gt is pointing to TIME amp DATE Press the NAVIGATION dial once If the date and time are incorrect press the NAVIGATION dial again The hours value will begin flashing Rotate the NAVIGATION dial until the hour and AM PM values are correct Press the NAVIGATION dial again The minutes value will begin flashing Rotate the NAVIGATION dial to adjust the minutes Repeat this procedure to adjust the month date and year Save the new settings as described in the Saving Parameters section this page 11 User s Information Manual 4 SMART SYSTEM control module continued Temperature Units The control can be configured to display temperature in either
12. elay setting Pressing the NAVIGATION dial will select the setting indicated by the cursor Pressing the NAVIGATION dial will display the Set Points Screen Turning the NAVIGATION dial will move the cursor up or down Turning the NAVIGATION dial will increase or decrease the current setting F RIGHT SELECT key function SHDN Press the RIGHT SELECT key to turn the boiler OFF ON Press the RIGHT SELECT key to turn the boiler ON NO Press the RIGHT SELECT key to cancel the shutdown operation SAVE Press the RIGHT SELECT key to save the current change HOME Press the RIGHT SELECT key to return to the Status Screen and upload parameter changes Notes 15 User s Information Manual Revision Notes Revision A ECO C05747 initial release Reflects the new model numbers for the Knight upgrade Revision B ECO C07072 reflects the change in design of manual air vent valve and the update of FIG 3 on page 8 Revision C ECO C09197 updates made to the SMART SYSTEM control ECR R04523 Revision D ECO C10143 reflects updates made to the ignition timing information Revision E ECO C11102 reflects outdoor air reset updates Revision F ECO C14411 reflects condensate trap changes R6594 on page 7 along with the addition of the corrosive contaminant warning on page 3 R06313 KBII USER Rev F 1 14
13. ersonal injury death or substantial property damage User s Information Manual 1 Prevent combustion air contamination 4 If the boiler combustion air inlet is located in a laundry room or pool facility for example these areas will always contain hazardous contaminants To prevent the potential of severe personal injury or death check for areas and products listed in Table 1 before installing the boiler or air inlet piping If contaminants are found you MUST Remove contaminants permanently OR Relocate air inlet and vent terminations to other areas WARNING WARNING Products to avoid Spray cans containing chloro fluorocarbons Permanent wave solutions Chlorinated waxes cleaners Chlorine based swimming pool chemicals Calcium chloride used for thawing Sodium chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric acid muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Chlorine type bleaches detergents and cleaning solvents found in household laundry rooms Adhesives used to fasten building products and other similar products Areas likely to have contaminants Dry cleaning laundry areas and establishments Swimming pools Metal fabrication plants Beauty shops Refrigeration repair shops Photo processing plants Auto body shops Plastic manufacturing plants Furniture refinishing areas and estab
14. eset curve parameters can be changed by the installer by accessing the Outdoor Reset menu There are three 3 individual user set points for better zone control These are listed as SH1 Set Point through SH3 Set Point These set points provide a maximum boiler water temperature limit to the outdoor reset curve of each zone The boiler operating set point is calculated from the individual reset curve of each zone If multiple space heating set points are calling for heat the highest set point has priority The range is SH Minimum Set point to SH Maximum Set point 32 F 0 C 190 F 88 C The default is 125 F 52 C By installing a tank sensor the SMART SYSTEM control can perform the tank thermostat function The SMART SYSTEM control automatically detects the presence of this sensor and generates a DHW call for heat when the tank temperature drops 6 F 14 C below the tank set point Tank Set point parameter and finishes the call for heat when the tank temperature reaches tank set point This parameter can be changed by the installer by accessing the DHW Tank Set point parameter The temperature range of this parameter is 68 F 20 C to 190 F 88 C The default value is 125 F 52 C Press the NAVIGATION dial once A menu will appear showing the SH1 SH2 SH3 and DHW Set Points Rotate the NAVIGATION dial until the arrow gt is pointing to the setting you wish to change Press the NAVIGATION dial again The value of
15. ility of scalding from hot water WARNING To avoid water damage or scalding due to valve operation a metal discharge line must be connected to the relief valve outlet and run to a safe place of disposal This discharge line must be installed by a qualified heating installer or service technician in accordance with the instructions in the Knight Boiler Installation and Operation Manual The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge 2 Read the boiler pressure temperature gauge to make sure the system is pressurized Lift the relief valve top lever slightly allowing water to relieve through the valve and discharge piping 3 If water flows freely release the lever and allow the valve to seat Watch the end of the relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain If the valve weeps lift the seat again to attempt to clean the valve seat If the valve continues to weep afterwards contact your qualified service technician to inspect the valve and system 4 If water does not flow from the valve when you lift the lever completely the valve or discharge line may be blocked Immediately shut down the boiler following the operating instructions on page 9 of this manual Call your qualified service technician to inspect the boiler and system Shut boiler down unless boiler is used for Domestic Wa
16. lishments New building construction Remodeling areas Garages with workshops Table 1 Corrosive Contaminants and Sources WARNING If the boiler combustion air inlet is located in any area likely to cause contamination or if products which would contaminate the air cannot be removed you must have the combustion air and vent re piped and terminated to another location Contaminated combustion air will damage the boiler resulting in possible severe personal injury death or substantial property damage Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds When these chemicals pass through the boiler they can form strong acids The acid can eat through the boiler wall causing serious damage and presenting a possible threat of flue gas spillage or boiler water leakage into the building Please read the information listed in Table 1 If contaminating chemicals will be present near the location of the boiler combustion air inlet have your installer pipe the boiler combustion air and vent to another location per the Knight Boiler Installation and Operation Manual User s Information Manual 2 Maintenance schedule 5 Service technician see the Knight Boiler Service Manual General Reported problems Inspect interior clean and vacuum if necessary Clean condensate trap and fill with fresh water Check for leaks water gas flue condensate
17. lue gas emission from the condensate drain line Failure to fill the trap could result in severe personal injury or death IMG00846 TO FLOOR DRAIN 2 PVC CAP WITH BLOCKED DRAIN SWITCH CONDENSATE FROM HEAT EXCHANGER 1 2 12 7mm PVC ELBOW FIELD SUPPLIED RETAINING SCREW Figure 1 Condensate Trap Condensate disposal 1 This boiler is a high efficiency appliance that produces condensate 2 The side of the boiler has a 1 2 inch PVC union for connection of a 1 2 inch PVC pipe FIG 2 3 Slope condensate tubing down and away from the boiler into a drain or condensate neutralizing filter Condensate from the Knight boiler will be slightly acidic typically with a pH from 3 to 5 Install a neutralizing filter if required by local codes Call your qualified service technician to inspect the boiler and system A Neutralizer Kit is available from the factory Kit 3087 Call your qualified service technician to install 4 Install the 1 2 inch PVC elbow field supplied as shown in FIG 2 Call your qualified service technician to inspect the boiler and system 5 Do not expose condensate line to freezing temperatures 6 Use only plastic tubing or piping as a condensate drain line FIG 2 Use materials approved by the authority having jurisdiction In the absence of other authority PVC and CPVC pipe must comply with ASTM D1785 or D2845 Cement and primer must comply with ASME D2564 or F493 For Canada use
18. maintenance or follow the directions in this manual could result in damage to the boiler or system resulting in severe personal injury death or substantial property damage ANNUAL START UP User s Information Manual 2 Maintenance schedule 6 Maintenance procedures Boiler must be serviced and maintained WARNING The boiler must be inspected and started annually at the beginning of the heating season by a qualified service technician In addition the maintenance and care of the boiler designated on page 5 of this manual and explained on pages 6 through 8 must be performed to assure maximum boiler efficiency and reliability Failure to service and maintain the boiler and system could result in equipment failure causing possible severe personal injury death or substantial property damage NOTICE The following information provides detailed instructions for completing the maintenance items listed in the maintenance schedule on page 5 In addition to this maintenance the boiler must be serviced and started up at the beginning of each heating season by a qualified service technician Check boiler area WARNING To prevent potential of severe personal injury death or substantial property damage eliminate all materials discussed below from the boiler vicinity and the vicinity of the boiler combustion air inlet If contaminants are found Remove products immediately from the area If they have been there for an extended
19. s WARNING Failure to inspect the vent system as noted above and have it repaired by a qualified service technician can result in vent system failure causing severe personal injury or death Check air piping 1 Visually inspect the air inlet termination to be sure it is unobstructed Inspect the entire length of air piping to ensure piping is intact and all joints are properly sealed 2 Call your qualified service technician if you notice any problems Check relief valve 1 Inspect the boiler relief valve and the relief valve discharge pipe for signs of weeping or leakage 2 If the relief valve often weeps the expansion tank may not be working properly Immediately contact your qualified service technician to inspect the boiler and system Check condensate drain system 1 Inspect the condensate drain line condensate PVC fittings and condensate trap Fill condensate trap with water 1 Remove the PVC cap retaining screw from the PVC cap FIG 1 2 Remove the 2 PVC cap with the switch located at the top of the trap FIG 1 User s Information Manual 2 Maintenance schedule continued 7 3 Fill with fresh water until the water begins to pour out of the drain 4 Replace the cap Press the cap onto the trap until the cap makes contact with the drain 5 Replace the retaining screw WARNING The condensate trap FIG 1 must be filled with water during all times of boiler operation to avoid f
20. ter 1 Follow To Turn Off Gas to Appliance on page 9 of this manual 2 Do not drain the system unless exposure to freezing temperatures will occur 3 Do not drain the system if it is filled with an antifreeze solution 4 DO NOT shut down boilers used for domestic water heating they must operate year round Check air vents 1 Reference FIG 3 below 2 Visually inspect vent to make sure that no leaks are present 3 If there is leaking tighten the pin valve 4 If the leak continues replace the air vent 3 Replace the front access door Test low water cutoff if installed 1 If the system is equipped with a low water cutoff test the low water cutoff periodically during the heating season following the low water cutoff manufacturer s instructions Reset button low water cutoff 1 Testing the low water cutoff shuts the unit off Press the RESET button on the low water cutoff to turn the unit back on Check boiler piping gas and water 1 Remove the boiler front access door and perform a gas leak inspection per steps 1 through 7 of the Operating Instructions on page 9 If gas odor or leak is detected immediately shut down the boiler following the procedures on page 9 Call a qualified service technician 2 Visually inspect for leaks around water piping Also inspect the circulators relief valve and fittings Immediately call a qualified service technician to repair any leaks
21. the selected setting will begin to flash Rotate the NAVIGATION dial to adjust the value Save the new setting as described in the Saving Parameters section page 10 Space heating SH1 SH2 SH3 and tank set points CAUTION Mixing valves are required for the protection of any low temperature loops User s Information Manual 12 Status Display Screens Section Display Description A Boiler Status Bar STANDBY The unit has not received a call for heat from a remote thermostat nor has it received a call for heat from a DHW thermostat START The unit has begun a burn cycle and is checking all safety circuits PREPURGE The unit has initiated a prepurge period on a call for heat IGNITION The unit has begun a spark period to ignite the main burner The unit has fired and is running at the displayed percentage POSTPURGE The call for heat has been satisfied and the unit runs the fan for an additional postpurge period to clear the combustion chamber and vent system of residual flue products SHUTDOWN The unit has been placed in the OFF position The controlled temperature has exceeded its set point and its offset BLOCKED The unit has detected a condition that has temporarily interrupted the current call for heat B Call for Heat Indicators Room Thermostat 1 has a call for heat Room Thermostat 2 has a call for heat Room Thermostat 3 has a call for heat The tank thermostat or sensor has a call for
22. ymbol indicates a potentially hazardous situation which if not avoided may result in property damage NOTICE indicates special instructions on installation operation or maintenance that are important but not related to personal injury or property damage Contents HAZARD DEFINITIONS 2 PLEASE READ BEFORE PROCEEDING 3 1 PREVENT COMBUSTION AIR CONTAMINATION 4 2 MAINTENANCE SCHEDULE 5 Maintenance Procedures 6 Boiler Must Be Serviced and Maintained 6 Check Boiler Area 6 Check Pressure Temperature Gauge 6 Check Vent Piping 6 Check Air Piping 6 Check Relief Valve 6 Check Condensate Drain System 6 7 Check Air Vents 8 Test Low Water Cutoff if installed 8 Reset Button low water cutoff 8 Check Boiler Piping gas and water 8 Operate Relief Valve 8 Shut Boiler Down
23. ystem Gaskets and seals in the system may be damaged This can result in substantial property damage Do not use homemade cures or boiler patent medicines Serious damage to the boiler personnel and or property may result Continual fresh make up water will reduce boiler life Mineral buildup in the heat exchanger reduces heat transfer overheats the stainless steel heat exchanger and causes failure Addition of oxygen carried in by makeup water can cause internal corrosion Leaks in boiler or piping must be repaired at once to prevent makeup water Freeze protection fluids NEVER use automotive antifreeze Use only inhibited propylene glycol solutions which are specifically formulated for hydronic systems Ethylene glycol is toxic and can attack gaskets and seals used in hydronic systems When calling or writing about the boiler Please have the boiler model and serial number from the boiler rating plate Consider piping and installation when determining boiler location Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee Factory warranty shipped with unit does not apply to units improperly installed or improperly operated 3 NOTICE WARNING NOTICE WARNING DO NOT install units in rooms or environments that contain corrosive contaminants see Table 1 on page 4 Failure to comply could result in severe p
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