Application Brochure

tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 4611 - 23rd Street
Vernon, B.C. Canada V1T 4K7
Tel. [phone] Fax. [phone]
Web Site: www.tekmarcontrols.com
Control Systems
System Operation
All specifications are subject to change without notice.
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A 261-4 03/09
Product design, software and literature are Copyright © 2009 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
Printed in Canada. A 261-4 03/09.
The Boiler Control 261 provides control of two boilers for a dedicated Domestic Hot Water (DHW) storage system.
Heat Source Details The heat source can be high mass or low mass non-condensing or low temperature boilers, or any boilers
designed for this type of application.
Piping Details The boilers are piped in reverse return in order to provide equal flow through each boiler.
Setpoint Demand When the DHW tank requires heat, the DHW aquastat (A1) provides a Setpoint Demand to the 261 through relay R1.
Relay R1 provides power to the DHW pump (P1) in order to provide circulation through the DHW tank. The 261 increases the boiler
temperature to the Setpoint setting.
All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D 261.