INSTRUCTION MANUAL A-00-091-376 REVISION A Series E1 and E3 Instant Hot Water Recirculating Systems
BS Models A. Return into Cold Water Line at Top of Water Heater fig. 3 cold supply line hot supply line Air Vent cold water supply check valve hot water supply hose bib Recirc Pump shut-off valve HOT WATER HEATER shut-off valve HOT WATER HEATER B. Return to Drain Valve at Bottom of Water Heater fig. 4 Air Vent “Y” shut-off check hose shut-off type valve* valve* bib* valve* fitting Recirc Pump Figures 1, 2, 3 and 4 are for single line returns only.
8. Install the pump and other components required in accordance with the diagrams provided in fig. 1 or 2 and connect the return line to the water heater. Unscrew the pump housing from the motor (fig. 6) and run the pump for a few seconds to make sure it is operational. UltraCirc Models The BU models incorporate a shut off valve, check valve, and bleed valve into the brass pump housing eliminating the need to install these components. These models are supplied with 1/2” (5/8”) union fittings.
Hard Water Conditions Use a water conditioner. Hard water can cause scale build-up and eventually reduce the life of the pump and other system components. Protected by one or more of the following Patents: 4580335, 4615662, 4822256, 4834628, 5094593, 5143049, 5749715, 6149407, 6227235 System Maintenance • Do not attempt to lubricate the pump. The pump is self-lubricating. • Prevent the pump from running dry.
Xylem Inc. 3878 S. Willow, Suite 104 Fresno, CA 93725 Tel: (559) 265-4730 (800) 554-6853 Fax: (559) 265-4740 (800) 453-7523 www.xyleminc.com/brands/laingthermotech Laing Thermotech is a trademark of Xylem Inc. or one of its subsidiaries. © 2012 Xylem, Inc.
