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Honeywell C manual

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Table of contents for the manual

  • Page 1

    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. The L7224A,C and L7248A ,C,L control [...]

  • Page 2

    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 C7089R101 3 Wireless Outdoor T emperature Se nsor (requires W873 5ER1000) W8735S1000 Aqu aReset™ Outdoo r Reset Kit (inc ludes 50022037-0 02 Outdoor Rese[...]

  • Page 3

    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. Boilers usually have tappings that allow the well to be mou nted hor izontally so boiler wat[...]

  • Page 4

    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. 2. Gently p ull sensor from thermo well and throu gh cir- cuit [...]

  • Page 5

    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. On the L72 24 models, the High Limi t, Low Lim it, Low Li mit[...]

  • Page 6

    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. 3 Settings are viewable only[...]

  • Page 7

    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. Dome stic Hot W ater demands are se rviced immediately , without any delay . NO TE: When the Aquastat is connect ed to the oil primary an d/or thermo stat via the EnviraCOM bus, t[...]

  • Page 8

    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. Optional Outdoor Res et Module. C1 B1 ZC L2 LINE C2 ZR L1 B2 T T3 2 1 M32023A L1 (HOT) SENSOR LINE VOLT AGE CIRCULA TOR LINE VOLT AGE OIL BURNER RELA Y L2 OUTDOOR [...]

  • Page 9

    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. Circulat or starts when water temperat ure is abov e Low Limit se[...]

  • Page 10

    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. In the instance where an Outdoor Reset Mo dule is used, the war nings may indicate a reset c [...]

  • Page 11

    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. • Wiring OK, is p ump running ? • If not, r eplace the pump . • If p[...]

  • Page 12

    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. OPTIONAL FEA TURE ON SELECT MODELS. REFER T O DEV[...]

  • Page 13

    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. USE GROUNDING SCREW PROVIDED. 2 3 L1 (HOT) L2 1 2[...]

  • Page 14

    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. OPTIONAL FEATURE ON SELECT MODELS. REFER [...]

  • Page 15

    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. USE GROUNDING SCREW PROVIDED. 2 W L1 (HOT) L2 1 B R C1 B1 ZC L2 [...]

  • Page 16

    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. 68-0281—16 M.S . Rev . 09-13 Printed in United States[...]