L4188A,B; L4189A,B; L6188A-C; L6189A-C Aquastat Remote Bulb with Screwdriver Slot Direct Mount with Setting Knob APPLICATION ® Aquastat Controllers are bulb-type providing operating or limit control of water temperature in hot water heating systems and water heaters. ® Controllers FEATURES •...
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Ambient Temperature Range: 32° to 158° F (0° to 70° C). Mounting: Must be mounted in an enclosure that meets local electrical codes. Direct: Unit mounts on immersion well at desired sensing location. Remote bulb: Sensing bulb is inserted into immersion well at desired sensing location.
L4188A,B; L4189A,B; L6188A-C; L6189A-C AQUASTAT® CONTROLLERS Accessories (order separately): Capillary compression fittings. Part No. 104484A: 1/2 in. NPT spud. Part No. 104484B: 3/4 in. NPT spud. Immersion well: Pressure rating 255 psi [1760 kPa]. Part No. 45900409-003B: 1/2 in. BSPT spud, 1 in. insulation, 3-1/2 in.
Mounting Behind Panel-Controller with Knob NOTE: The panel can be up to 5/64 in. thick. 1. Uncoil capillary, starting at bulb. Avoid sharp bends or kinks in the capillary. Leave excess capillary loosely coiled below controller case. 2. Remove the setting knob by pulling straight off. 3.
L4188A,B; L4189A,B; L6188A-C; L6189A-C AQUASTAT® CONTROLLERS MOUNTING TEMPLATE 3/16 5/16 3/16 DRILL 2 MOUNTING SCREW HOLES. DRILL HOLE FOR SLOTTED SHAFT. USE SMALL HOLE FOR SHAFT ONLY; LARGE HOLE SHAFT PLUS SETTING SCALE. DRILL SMALL HOLE FOR MODEL WITH MANUAL RESET BUTTON OR LARGE HOLE FOR MODEL WITH DIFFERENTIAL ADJUSTMENT.
24V THERMOSTAT PROTECTORELAY CONTROL HIGH LIMIT BLACK BURNER MOTOR LOW LIMIT ORANGE CIRCULATOR IGNITION WHITE POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. L4188 OR L4189 USED AS HIGH LIMIT. L6188 OR L6189 USED AS LOW LIMIT/CIRCULATOR CONTROLLER. Fig.
Teflon® is a registered trademark for E.I. Du Pont De Nemours and Company. Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 customer.honeywell.com ® U.S. Registered Trademark © 2007 Honeywell International Inc. 68-0061—1 J.I. Rev. 10-07 CONTROLLER DIFFERENTIAL ADJUSTMENT DIAL M25425 Fig.