Instruction/ maintenance manual of the product L7248 Burnham
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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 efciency established by the United States Environmental Protection Agency (EP A).
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 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 .
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.
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.
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.
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 .
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 sufcient draft at all times, to assure safe proper operation of the boiler .
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 .
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.
1 1 Figure 1 1C: Wiring Diagram for LE Boilers with Riello Burner.
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.
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.
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.
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.
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 .
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.
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).
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.
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 , .
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 .
22 Figure 19: LE Boiler Jacket & Insulation.
23 Figure 20: LE Bare Boiler Assembly.
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.
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.
26 SER VICE RECORD DA TE SERVICE PERFORMED.
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.
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 ser.
An important point after buying a device Burnham L7248 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Burnham L7248 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Burnham L7248 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Burnham L7248 you will learn all the available features of the product, as well as information on its operation. The information that you get Burnham L7248 will certainly help you make a decision on the purchase.
If you already are a holder of Burnham L7248, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Burnham L7248.
However, one of the most important roles played by the user manual is to help in solving problems with Burnham L7248. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Burnham L7248 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
