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Burnham LE L7248 manual

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Table of contents for the manual

  • Page 1

    81433010R18-1/08 As an ENERGY STAR ® Partner , U.S. Boiler Co., Inc. has determined that the LE1 red at the 0.60 GPH rate meets the ENERGY ST AR guidelines for Energy efciency established by the United States Environmental Protection Agency (EP A). Price - $3.00 D N A G N I T A R E P O , N O I T A L L A T S N I R O F S N O I T C U R T S N I [...]

  • Page 2

    2 IMPOR T ANT INFORMA TION - PLEASE READ THIS P AGE CAREFULL Y 1. THIS BOILER HAS LIMITED W ARRANTIES, COPIES OF WHICH ARE PRINTED ON THE BACK COVER OF THIS MANUAL. 2. THIS BOILER IS SUIT ABLE FOR INST ALLA TION ON COMBUSTIBLE FLOORING. BOILER CAN NOT BE INST ALLED ON CARPETING. 3. ALL BOILERS MUST BE INST ALLED IN ACCORDANCE WITH NA TIONAL, ST A T[...]

  • Page 3

    3 I. General Information I. General Infor mation .................................. 3 II. Installation I nstructions ............................ 5 III. Operating and Service Instructions .......... 12 T AbLE OF CONTENTS Figure 1: LE™ Packaged Boiler 1 . INSPECT SHIPMENT carefully for any signs of damage. A. ALL EQUIPMENT is carefully manufacture[...]

  • Page 4

    4 3 . PROVIDE COMBUSTION AND VENTILA TION AIR. Local code provisions may apply and should be referenced. G N I N R A W r i a n o i t a l i t n e v d n a n o i t s u b m o c e t a u q e d A r e p o r p e r u s s a o t d e d i v o r p e b t s u m . n o i t s u b m o c A. Determine volume of space (boiler room). Rooms communicating directly with the s[...]

  • Page 5

    5 II. Installation Instructions Figure 3: Hinge Installation & Assembly , LE Boiler 1. REMOVE CRA TE A. Remove all fasteners at crate skid. B. Lift outside container and remove all other inside protective spacers and bracing. Remove container containing Safety Relief V alve, Boiler Drain V alve and Pipe Fittings. 2. REMOV AL OF BOILER FROM SKID[...]

  • Page 6

    6 Figure 4: Recommended W ater Piping for Zone V alve Zoned Heating Systems Figure 5: Recommended W ater Piping for Circulator Zoned Heating Systems[...]

  • Page 7

    7 E. A hot water boiler installed above radiation level must be provided with a low water cutoff device as part of the installation. If a low water cut-off is required, it must be mount- ed in the system piping above the boiler . The minimum safe water level of a hot water boiler is just above the highest water containing cavity of the boiler; that[...]

  • Page 8

    8 8. INST ALL SMOKEPIPE — The LE should be vented into a reclay tile-lined masonry chimney or a chimney constructed from T ype L V ent or a factory built chimney that complies with the T ype HT requirement, of UL103. The chimney and vent pipe shall have a sufcient draft at all times, to assure safe proper operation of the boiler . See Figur[...]

  • Page 9

    9 : 2 E L B A T ) M P R 0 5 4 3 ( S T I N U E G A T S - E L G N I S S M E T S Y S E P I P - O W T " H " t f i L g n i b u T f o h t g n e L m u m i x a M " R " + " H " D O " 8 / 3 ) H P G 3 ( g n i b u T D O " 2 / 1 ) H P G 3 ( g n i b u T ' 0 ' 4 8 ' 0 0 1 ' 1 ' 8 7 ' 0 0 1 &apo[...]

  • Page 10

    10 Figure 1 1B: Wiring Diagram for LE Boilers with Beckett AFG Burner , EC5000 Control, and Honeywell L4080B High Limit SEQUENCE OF OPERA TION Refer to EC5000 Manual for wiring and operation details. SEQUENCE OF OPERA TION A call for heat by the thermostat energizes the L7248C control which in turn energizes the R7184B primary control. The burner w[...]

  • Page 11

    1 1 Figure 1 1C: Wiring Diagram for LE Boilers with Riello Burner[...]

  • Page 12

    12 III. Operating and Service Instructions 1. AL W A YS INSPECT INST ALLA TION BEFORE ST AR TING BURNER. 2. FILL HEA TING SYSTEM WITH W A TER. NOTE: It is important to properly remove the oil and dirt from the system. CLEAN HEA TING SYSTEM If boiler water is dirty , refer to step 13 for proper cleaning instructions. A. Fill entire Heating System wi[...]

  • Page 13

    13 Figure 12: L7248 Circuit Board Layout - Horizontal Mount E. DISPLA Y READOUT In the RUN mode, the Aquastat will ash "bt" (boiler temp) followed by the temperature (i.e., 220), followed by °F or °C. T o read boiler settings, press the I key to read the parameter of interest. For example, press I High Limit ( HL ) is displayed, foll[...]

  • Page 14

    14 the burner output. The ZC output is ener gized. The controller continues to monitor the system and automatically restarts if the error condition clears. Refer to T able 4. The operating sequence for the L7248 is shown in T able 5. Figure 14: Setpoints and Differentials G. HIGH LIMIT CONTROLLER The High Limit opens and turns off the burner when t[...]

  • Page 15

    15 T ABLE 6: BECKETT AFG BURNER C. Attach a plastic hose to fuel pump vent tting and provide a pan to catch the oil. D. REMOVE GAUGE POR T PLUG from fuel pump and install pressure gauge. E. REMOVE FLAME PLUG IN SWING DOOR. 8. ST AR T OIL BURNER A. Open vent tting on fuel pump. B. TURN ‘ON’ BURNER service switch and allow burner to run unt[...]

  • Page 16

    16 Figure 16: Cad Cell Before pressing the reset button call your service- man immediately . N O I T U A C n e h w r e n r u b e h t t r a t s o t t p m e t t a t o n o D t i n u e h t n e h w , d e t a l u m u c c a s a h l i o s s e c x e n o i t s u b m o c e h t n e h w r o , r o p a v f o l l u f s i . t o h y r e v s i r e b m a h c 1 1 . CHE[...]

  • Page 17

    17 B. Boiling Out of Boiler and System. The oil and grease which accumulate in a new hot water boiler can be washed out in the following manner . (1) Remove Safety Relief V alve using extreme care to avoid damaging it. (2) Partially ll boiler and add caustic soda or triso - dium phosphate. Add an appropriate amount of recommended boil out compou[...]

  • Page 18

    18 Important Produc t Safety Informatio n Refractory Ceram ic Fiber Product Warning : The Repair Parts list designates parts that contain refracto ry ceramic fibers (RCF). RCF has been classified as a possible human carcinogen. When exposed to temperatures about 1805°F, su ch as during direct flame contact, RCF changes into crystalline silica, a k[...]

  • Page 19

    19 H. COLD OIL — If the oil temperature approaching the fuel pump is 40°F or lower poor combustion or delayed ignition may result. Cold oil is harder to atomize at the nozzle. Thus, the spray droplets get larger and the ame shape gets longer . An outside fuel tank that is above grade or has fuel lines in a shallow bury is a good candidate for[...]

  • Page 20

    20 IV . Boiler Cleaning G N I N R A W d e p p i u q e s r e l i o B . f f o d e n r u t h c t i w s e c i v r e s r e n r u b h t i w d e t e l p m o c e b t s u m g n i n a e l c r e l i o b l l A , e g a m a d y t r e p o r p e r e v e s e s u a c n a c h c i h w d r a z a h l a i t n e t o p a e v a h r o o d g n i w s r e n r u b h t i w o t h [...]

  • Page 21

    21 V . Repair Parts All LE™ Series Repair Parts may be obtained through your local Burnham Wholesale distribu- tor . Should you require assistance in locating a Burnham Distributor in your area, or have questions regarding the availability of Burnham products or repair parts, please contact Burnham Customer Service at (717) 481-8400 or Fax (717) [...]

  • Page 22

    22 Figure 19: LE Boiler Jacket & Insulation[...]

  • Page 23

    23 Figure 20: LE Bare Boiler Assembly[...]

  • Page 24

    24 FIGURE 21: BECKETT AFG OIL BURNER REP AIR P ARTS For replacement oil burner parts, contact your wholesaler or the burner manufacturer: R.W . Beckett Co., P .O. Box 1289, Elyria, OH 44036 (440) 327-1060 (800) OIL BURN(645-2876) F AX (440) 327-1064[...]

  • Page 25

    25 L E D O M 1 E L 2 E L ) h p g ( e t a R g n i r i F 0 6 . 0 0 0 . 1 5 2 . 1 t t e k c e B . o N c e p S 1 1 6 4 B C B 2 1 6 4 B C B n o i t a n i b m o C e b u T r i A B M 0 5 G F A D M 0 5 G F A e p y T d a e H n o i t s u b m o C 1 L 1 V d n a B r i A A K B 2 9 4 3 r e t t u h S r i A K B 9 0 7 3 r e w o l B 9 9 9 2 t i K e l f f a B e t a R g[...]

  • Page 26

    26 SER VICE RECORD DA TE SERVICE PERFORMED[...]

  • Page 27

    27 VI. Low W ater Cut Off (L WCO) A 24 V AC L WCO is used primarily for gas red boilers where a 24 volt control circuit exists within the boiler . However , a 24 V AC L WCO can only be used if the boiler manufacturer has provided piping and wiring connections and instructions to allow for this application. How to T est Shut off fuel supply . Low[...]

  • Page 28

    28 if the residential grade water boiler is used or operated over its rated capacity, is subjected to unauthorized modification, or is damaged as a result of being otherwise improperly operated or serviced including, but not limited to, damage from any of the following: operation with insufficient water, allowing the boiler to freeze, subjecting th[...]