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Series AA250 

Page 1 

 LT252 Oct 2019 

Installation, Operation and Service Instructions 

 

WARM AIR HEATER 

 

 

 

Series AA250 

 

 

WARNING

 

 

FOR YOUR SAFETY

 

 

Improper installation, adjustment, alteration, service 

or maintenance can cause property damage, injury 

or death. Read the installation, operation and 

maintenance instructions thoroughly before 

installing or servicing this equipment. 

   

Do not store or use gasoline or other flammable 

vapors and liquids in the vicinity of this or any other 

appliance. 

If you smell gas: 

1. Open windows 

2. Don’t touch electrical switches 

3. Extinguish any open flame 

4. Immediately call your gas supplier 

OWNER

 

 

INSTALLER

 

Retain this Manual & ensure available for service. 

Improper installation, adjustment, alteration, service 

or maintenance can cause injury, death or property 

damage.  

Read the installation, operation and service 

instructions thoroughly before installing or servicing 

this equipment 

  Provide Manual to Owner upon completion of 

installation! 

Read and thoroughly understand these Instructions 

before attempting any installation 

 

              Canada: 

563 Barton Street, Stoney Creek, Ontario L8E 5S1

 

              USA

: 315 N Madison Street, Fortville, IN 46040

 

www.superiorradiant.com

Summary of Contents for AA250 Series

Page 1: ...you smell gas 1 Open windows 2 Don t touch electrical switches 3 Extinguish any open flame 4 Immediately call your gas supplier OWNER INSTALLER Retain this Manual ensure available for service Imprope...

Page 2: ...st safely allow this movement Failure to do so could result in serious fire or explosion hazard CAUTION FIRE OR EXPLOSION HAZARD This heater is equipped with an automatic ignition device Do not attemp...

Page 3: ...WALL MOUNTING 12 LIGHTING AND SHUTDOWN INSTRUCTIONS 13 START UP INSTRUCTIONS 13 SHUT DOWN PROCEDURE 13 ELECTRICAL DIAGRAM 14 GAS PIPING 15 VENTING COMBUSTION AIR 16 GENERAL REQUIREMENTS 16 FUEL CONVE...

Page 4: ...called on for helpful suggestions about installation Installation Codes Installations must comply with local building codes or in their absence the latest edition of the national regulations and proc...

Page 5: ...ed cfm 1000 Supply Pressure Minimum Natural Gas In W C 5 Propane In W C 11 Burner Manifold Pressure Nominal Heat Input Partial Heat Input Natural Gas In W C 4 2 Propane In W C 10 4 6 Inlet Connection...

Page 6: ...UG040 Orifice Propane 6 1 BS025 Motor Interface Plate 22 1 UG028 Orifice Natural Gas 7 1 BE012 Motor 115V 60Hz 1074 rpm 23 2 CH290 10 32 x 1 4 Head Phillips Screw 8 1 BS029 Burner Mount 24 1 BS045 Ign...

Page 7: ...iption 1 1 BS035 Lid 2 1 CH270 Door Latch 3 1 CH011 Sight Glass 4 2 CH285 PG13 5 Liquid Tight Fitting 5 1 CE058 TRANSFORMER 120 24V 40VA 50 60 Hz 6 1 VE096 Terminal Strip 6 port 7 1 CH264 WELD BOLT 10...

Page 8: ...capable of being ignited and burned Such materials shall be considered combustible even though flame proofed fire retardant treated or plastered The stated clearance to combustibles represents a surf...

Page 9: ...ter all connections are checked and any leaks are stopped turn on the main burner o Stand clear while the main burner ignites to prevent injury caused from hidden leaks that could cause flashback o Wi...

Page 10: ...ed for lifting and must be attached to all four 4 eyebolts Assemble eyebolts and chain according to the figure below Only use chain rated for lifting and must be connected on all four eyebolts All cha...

Page 11: ...o 45 degree paths or to focus the air flow in one 45 degree direction The tabs on each half will slide into the blower outlet between the inside of the case assembly and the blower housing outlet If t...

Page 12: ...Heater on the inside of the building with airflow coming from outside the building 3 Heater on the outside of the building with airflow coming from inside the building 4 Heater on the outside of the...

Page 13: ...oting Only qualified and properly trained personnel shall service or repair the heater 5 On a call for heat the motor will start up and run for 30 seconds This pre purge is a safety feature and normal...

Page 14: ...rom factory equipped with jumpers between R W1 and R W2 contacts If energized the heater will start running at full load high fire If the heater is operated with a two stage thermostat remove the jump...

Page 15: ...oleum LP gases Flexible gas connectors of approved type must be installed without sharp bends kinks or twists Failure to install the gas connection in the approved manner will result in a hazardous an...

Page 16: ...Refer to the National Fuel Gas Code ANSI Z223 1 NFPA 54 in the US and CSA B149 1 Installation Code in Canada as well as all local requirements for general venting guidance The Nation Fuel Gas Code req...

Page 17: ...valve out to expose the orifice 7 Use a 1 2 wrench or socket to remove the orifice from the burner manifold Inspect the orifice and burner manifold for wear or damage 8 Clean the threads in the burner...

Page 18: ...e heater a thorough cleaning At this time remove the fan and motor assembly and brush or blow off the fan wheel giving attention to the individual fan blades Additionally make sure the burner air inle...

Page 19: ...reverse to re assemble motor Fan wheel to interface plate clearance must be set to 0 5 inches 13mm Make sure the set screw of the fan is on the flat of the motor shaft when tightening Figure 8 Motor...

Page 20: ...heck the flame sensor s insulator base for cracks If cracks are found replace the igniter sensor assembly Perform an ohm check at the ignition control terminals to verify the circuit integrity of the...

Page 21: ...er above the burner and is connected between the ignition control and the gas control valve The switch is normally closed and will open the switch contacts if an overheat condition occurs The high lim...

Page 22: ...call for heat Understanding the operation sequence of the ignition module and related components is essential as it will relate directly to problem solving provided by the flow charts The ignition co...

Page 23: ...ted the gas valve remains open and sparking stops o If no flame is detected the gas valve closes and a 30 sec inter purge period begins After the inter purge the module repeats the trial for ignition...

Page 24: ...Series AA250 Page 24 LT252 Oct 2019...

Page 25: ...Switch BE005 4 Sail Switch BE025 5 Burner BG004 6 Burner manifold BG013 7 Vent BS051 8 Transformer 120 24V 40 VA 50 60Hz CE058 9 Control Module CE266 10 Valve NG W R 2 stage CG062 11 Igniter Flame Se...

Page 26: ...his warranty does not cover any shipping installation or other costs incurred in the repair or replacement of the product No materials will be accepted for return without authorization This warranty w...

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