Instruction/ maintenance manual of the product L7248A Honeywell
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INST ALLA TION INSTRUCTIONS 68-0281-16 L7224A,C; L7248A,C,L Oil and Electric Boiler Electr onic Aquastat ® Contr oller s APPLICA TION The L7224A,C and L72 48A,C,L 2012 Compliant Electronic Aquastat ® Cont rollers provide electronic temperature sensing in a UL limit-rate d control with a single sensing pr obe.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 2 Accessorie s: W8735Y1000 Wire less Outdoor Reset Kit W8735ER1000 Wi reless Outdoor Res et Module C7089.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 3 68-0281—16 New Installation Order well assemblies separate ly; see T able 1 and form no. 68-0040, Immersion Wells and Compre ssion Fittings for T emperatu re Controllers.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 4 Fig. 4. Replace ment sensor inst allation. Replacement Sensor Installation T ur n off all power and: 1. Carefully disconn ect sensor from circuit boar d by pulling gently on the connector.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 5 68-0281—16 A separate electromecha nical high-limit is no t required in a system that u ses this contr ol to meet Underwr iters Laboratorie s Inc. requirem ents for oil-fired boiler assemblies, UL 726.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 6 1 Display shows local setting; not the setting as modified by an external enviracom control. 2 Settings are viewable only if the outdoor reset module and ou t- door temperature sensor are installed and functioning properly.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 7 68-0281—16 NO TE: This feature is b locke d if a Domestic Hot W ater demand occurs.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 8 Fig. 8. L7224A, C; L7248L single hea t zone with indirec t water tank and cir culator s.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 9 68-0281—16 * Error condit ion only available when the Outdoor Reset M odule is installed. T able 6. L7224/L724 8 Controller Opera ting Sequence . Action System Respons e Thermostat calls fo r heat.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 10 . a W ar nings ar e generated to enunciate the system is not operating optimally , b ut t he Aquastat is still o perating and maintaining boiler temperature.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 11 68-0281—16 Fig. 9. L72 24A,C multiz one system with cir culator connec tions. Boiler is hot, house is cold. Display is ON. 120 V ac at C1 -C2 • 120 V ac at C1-C2, check wir ing to pump.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 12 Fig. 10. L7 224A,C sing le zone s ystem with circulator and in direct wate r tank wit h EnviraCOM™ thermosta t. M32025B POWER SUPPL Y . PRO VIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQ UIRED.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 13 68-0281—16 Fig. 11. L72 48L multizon e system with cir culator con nections. M29655A POWER SUPPL Y . PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS 68-0281—16 14 Fig. 12. L7 224/L7248 m ultizone system wi th Outdoor Reset an d Domestic Hot W ater Modules (indirect tank applicatio ns). M32024A POWER SUPPL Y . PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
L7224A,C; L724 8A,C,L OIL AND ELECTR IC BOI LER ELECTRONIC AQUASTAT ® CONTROLLERS 15 68-0281—16 Fig. 13. L7248L Ext ernal Low Li mit connec tions. M271 13 POWER SUPPL Y . PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
L7224A,C; L7248A, C,L OIL AND ELEC TRIC BOILER ELECTRONIC AQ UASTAT ® CONTROLLERS Automation and Control Solutions Honeywell Intern ational Inc. 1985 Douglas Drive North Golden Valley, MN 55422 customer.hone ywell.com ® U.S . Registered T rademark © 2013 Honey well International Inc.
An important point after buying a device Honeywell L7248A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell L7248A 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 Honeywell L7248A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell L7248A you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell L7248A will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell L7248A, 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 Honeywell L7248A.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell L7248A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell L7248A 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
