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Honeywell L8124a C Manual

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    Page 1 ® U.S. Registered Trademark Copyright © 2001 Honeywell • All Rights Reserved INSTALLATION INSTRUCTIONS 60- 0786- 7 L8124B,E,G,L Aquastat ® Relays APPLICATION These immersion type controllers provide high limit, low limit, and circulator control in forced hydronic heating systems that include domestic hot water. Table 1 lists the various TRADELINE ® models and applications. SPECIFICATIONS Low Limit: Setting: 110°F to 220°F (43°C to 104°C), adjustable. Differential: 10°F to 25°F (6°C to 14°C),...
    Page 2 L8124B,E,G,L AQUASTAT® RELAYS 60-0786—7 2 . Fig. 1. Internal view of L8124G,L. WARNINGExplosion Hazard. Can cause serious injury, death or property damage. Use this product only in systems with a pressure relief valve. WARNINGElectrical Shock Hazard. Can cause serious injury or death. Disconnect power supply before beginning installation to prevent electrical shock or equipment damage. IMPORTANT: 1. Terminals on these Aquastat ® Relays are approved for copper wire only. 2. Immersion well must snugly...
    Page 3 L8124B,E,G,L AQUASTAT® RELAYS 3 60-0786—7 5.5.If the old immersion well is otherwise suitable but does not fit the L8124 Clamp, the124904 Well Adapter (ordered separately) must be used as follows:a. After loosening the immersion well clamp screw, fit the adapter onto the capillary tube (Fig. 3). b. Make sure the adapter fits into the hole in the case. Position the clamp properly on the adapter flange, then tighten the clamp screw. c. Return to step 4a. above, and complete the installation. Fig....
    Page 4 L8124B,E,G,L AQUASTAT® RELAYS 60-0786—7 4 Fig. 4. L8124B in gas-fired, millivolt, forced hot water, tankless, zoned pump system. Fig. 5. L8124B single zone connections and internal schematic.Fig. 6. L8124Esingle zone connections and internal schematic. L1 (HOT) L2 1 2 3 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED. B1 IS 1/4 IN. TAB TERMINAL. TT 1 23 456 M8841 THPP 1 2 3TRPP MILLIVOLTAGE GAS...
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