Burnham L7248 - Manuals

II. Installation Instructions Figure 3: Hinge Installation & Assembly, LE Boiler 1. REMOVE CRATE 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 Valve, Boiler Drain Valve and Pip...

10 Figure 11B: Wiring Diagram for LE Boilers with Beckett AFG Burner, EC000 Control, and Honeywell L4080B High Limit SEQUENCE OF OPERATION Refer to EC5000 Manual for wiring and operation details. SEQUENCE OF OPERATION A call for heat by the thermostat energizes the L7248C control which in turn energ...

11 Figure 11C: Wiring Diagram for LE Boilers with Riello Burner

1 III. Operating and Service Instructions 1. ALWAYS INSPECT INSTALLATION BEFORE STARTING BURNER. 2. FILL HEATING SYSTEM WITH WATER. NOTE: It is important to properly remove the oil and dirt from the system. CLEAN HEATING SYSTEM If boiler water is dirty, refer to step 13 for proper cleaning instructi...

13 Figure 1: L48 Circuit Board Layout - Horizontal Mount E. DISPLAY READOUT In the RUN mode, the Aquastat will flash "bt" (boiler temp) followed by the temperature (i.e., 220), followed by °F or °C. To read boiler settings, press the I key to read the parameter of interest. For example, pres...

14 the burner output. The ZC output is energized. The controller continues to monitor the system and automatically restarts if the error condition clears. Refer to Table 4. The operating sequence for the L7248 is shown in Table 5. Figure 14: Setpoints and Differentials G. HIGH LIMIT CONTROLLER The H...

1 Figure 1: 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 li 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 ll u f s ...

18 Important Product Safety Information Refractory Ceramic Fiber Product Warning : The Repair Parts list designates parts that contain refractory ceramic fibers (RCF). RCF has been classified as a possible human carcinogen. When exposed to temperatures about 1805°F, such as during direct flame conta...

1 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 Cus...

VI. Low Water Cut Off (LWCO) A 24 VAC LWCO is used primarily for gas fired boilers where a 24 volt control circuit exists within the boiler. However, a 24 VAC LWCO can only be used if the boiler manufacturer has provided piping and wiring connections and instructions to allow for this application. H...

8 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 wa...