Elster Eclipse AirHeat AH Operating Instructions Manual Download Page 10

10

AirHeat, V1, Operating Instructions, Edition 09.12

Figure 3. Mounting and Duct Lengths

Startup and Adjustment

Initial Settings 

Adjust the linkage of the gas control valve so that when
heat is called for, the valve is 10° from fully open, and
when cooling is required, the valve is approximately 5°
from fully closed.
Close all manual gas cocks 
With the pilot cock handle in the closed position, remove
the top screw and turn the adjusting screw five turns out
from fully closed. See Figure 4.

Figure 4. Pilot Cock

Start Blower

Start the combustion air blower on the burner. Check the

rotation to make sure it is correct. If not, have a qualified
electrician rewire the blower for proper rotation.

Start Circulation Fan 

Start the duct circulation fan.

Set Air Pressure Drop

Measure the air pressure drop across the burner as
shown in Figure 5.

Turn the disc on the blower air inlet until the air pressure
drop is between 0.4 ”w.c. (1 mbar) minimum and 1.0 ”w.c.
(2.5 mbar) maximum. For a given input, lower air pressure
drops will produce a longer flame, and higher drops will
produce a shorter flame.

Large Burners Only: 

Some models, such as the 640,

680, and 720 TAH burners, contain a butterfly valve in the
check valve line. On these models, after setting the air
flow as described in the previous paragraph, measure the
air pressure drop between the gas pressure tap and the
duct as shown in Figure 5. Gas flow must be off. Adjust
the butterfly valve to produce an air pressure drop of 0.2
”w.c. (0.5 mbar).

Figure 5. Pressure Measurement

Minimum Distance Before

Possible Flame Impingement = 3.8 ft (1.17 m)

AH

Burner

Minimum distance before transition

Rectangular ducts: one height or width, whichever is greater

Round ducts: one diameter

7.5°

Maximum

Air Flow

Duct Lengths

Top Screw

Handle

(Shown in 

Open Position)

Adjusting Screw

(Clockwise for less pilot gas,

Counterclockwise for more pilot gas)

Gas

Pressure

Tap

Duct Tap

10" to 20" (250-500mm)

Downstream of Burner

Air Pressure

Taps (2)

Summary of Contents for Eclipse AirHeat AH

Page 1: ...Eclipse AirHeat Burners Model AH TAH CAH Version 1 Operating Instructions Edition 09 12 AH Front View Datasheet 140 1 AH Back View Datasheet 140 1 TAH Datasheet 140 3 CAH Datasheet 140 4 ...

Page 2: ... and Eclipse will not be liable for any other injury loss damage or expenses whether direct or consequential including but not limited to loss of use income or damage to material arising in connection with the sale installation use of inability to use or the repair or replacement of Eclipse s products Any operation expressly prohibited in this manual any adjustment or assembly procedures not recom...

Page 3: ...4 Capabilities 4 Operator Training 4 Replacement Parts 4 Information Guide 5 Burner Operating Parameters Requirements 5 Specifications 6 Control System Requirements 7 Approval of Components 8 Duct Design and Burner Mounting 8 Startup and Adjustment 10 Rountine Maintenance 11 Troubleshooting 12 ...

Page 4: ...s wear the appropriate protective equipment when approaching the burner This manual provides information regarding the use of these burners for their specific design purpose Do not deviate from any instructions or application limits described herein without written approval from Eclipse Capabilities Only qualified personnel with sufficient mechanical aptitude and experience with combustion equipme...

Page 5: ...ough 140 5 Burner Environment Weather Protection Protect burners from the weather Combustion Air Must be free of contaminants Eclipse strongly recommends use of a combustion air filter to remove airborne particles If corrosive fumes or materials are present in the air supply the blower with fresh clean air from an uncontaminated area of the plant Room Openings If the burner is mounted on the side ...

Page 6: ...proves the pilot flame without spark prior to opening the main gas valves CGA requires two flame rods on burners over 3 ft 0 9 m long Use a flame monitoring endplate Datasheet 140 5 to mount a second flame rod on the end opposite the gas inlet All burners where the flame must travel over 10 must have flame supervision at both ends One device must be at the pilot end while the other device must be ...

Page 7: ...he burner See Figure 1 Figure 1 Check Valve Operation Do not install any valve or controlling device in the gas line between the burner and the check valve tee Because this section of the gas line carries a partial premix at low fire it is possible under unusual conditions for the flame to travel back through the pipe to the tee Devices installed in this section may be damaged and may melt releasi...

Page 8: ...tandards such as NFPA Standard 54 ANSI Z223 EN 746 2 Where to Get the Standards The NFPA Standards are available from National Fire Protection Agency Batterymarch Park Quincy MA 02269 www nfpa org The ANSI Standards are available from American National Standard Institute 1430 Broadway New York NY 10018 www ansi org Duct Design and Burner Mounting Duct Design See Figure 3 for typical mounting arran...

Page 9: ...to 1200 fpm 2 5 to 6 1 m s Min Max Velocity 500 to 1200 fpm 2 5 to 6 1 m s Sealed Duct Press 0 2 to 0 5 w c 0 5 to 1 2 mbar Min Max Velocity 500 to 1200 fpm 2 5 to 6 1 m s Slot Fired Duct Press 0 to 0 5 w c 0 to 1 2 mbar Min Max Velocity 500 to 1200 fpm 2 5 to 6 1 m s Min Max Velocity 500 to 6000 fpm 2 5 to 30 m s 1000 to 4000 fpm 5 0 to 20 m s Optimum Velocity Guidelines for All Mounting Arrangem...

Page 10: ...ntil the air pressure drop is between 0 4 w c 1 mbar minimum and 1 0 w c 2 5 mbar maximum For a given input lower air pressure drops will produce a longer flame and higher drops will produce a shorter flame Large Burners Only Some models such as the 640 680 and 720 TAH burners contain a butterfly valve in the check valve line On these models after setting the air flow as described in the previous ...

Page 11: ...ngth for a given gas input increase the air pressure drop as described in Set Air Pressure Drop paragraph above Check All Settings Return the burner to low fire and check to ensure the burner remains lit with a stable flame that extends down the burner length Cycle the burner between low and high fire several times checking pressure drops and flame lengths Routine Maintenance Motor Lubrication Oil...

Page 12: ...as flow Flame failure when main burner returns from high to low fire Gas pressure to pilot regulator Under gassing pilot Check pilot gas pressure to regulator should be 1 PSIG 70 mbar maximum Check pilot regulator inlet and outlet gas pressures Check pilot flame Check impulse line for possible dirt clogging Check impulse line duct connection for effective pressure being transmitted to regulator Re...

Page 13: ...Notes i ...

Page 14: ... Eclipse Inc All Rights Reserved ...

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