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Series AA250   

 

 

Page 6   

 

 

 

LT252 Oct 2019    

PARTS OF THE HEATER 

 

 

Figure 2 - General Overview  

General Assembly  

Refer to Figure 2 for component identification. 

 

No.  Qty 

PN 

Description 

 

No.  Qty 

PN 

Description 

BS044 

Base 

  17  3 

CH270  Door Latch 

BS051 

Vent 

  18  2 

CH277  8-32 x 1” Male-Female Standoff 

BE025 

Air Proving Switch 

  19 

BG004  Burner 

BS036 

Controls Box 

  20  2 

CH119  8-32 x 1” Head Phillips Screw 

BE013 

Impeller 

  21  1 

UG040  Orifice (Propane) 

BS025 

Motor Interface Plate 

  22  1 

UG028  Orifice (Natural Gas) 

BE012 

Motor: 115V/60Hz,1074 rpm     23 

CH290  10-32 x 1/4” Head Phillips Screw 

BS029 

Burner Mount 

  24  1 

BS045  Igniter Bracket 

BS024 

Blower Housing 

  25  1 

VE002  Igniter/Flame Sensor 

10 

BS033 

Heat Chamber 

  26  1 

BS043  Valve Bracket 

11 

BE005 

High Limit Switch 

  27  1 

CG062  Valve NG W/R 2-Stage 

12 

BS040 

Front Door 

  28 

BG013  Burner Manifold 

13 

CH273 

¼”-20 Press-In Nut 

  29 

CH272  Hinge 

14 

CH274 

¼”-20 Eyebolt 

  30 

CH019  Nut, 5/16-18 

15 

BS042 

Enclosure 

  31 

CH100  Hex Bolt, 5/16-18 x 3/4” 

16 

BS041 

Back Door 

  32 

CH080  Washer, Flat, ½” 

 

Содержание AA250 Series

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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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