Lochinvar VAL30002 User Manual

VAL30002
Motorized Low
Temperature Valve

Three 2-1/2” NPT
Connections

Non-Condensing Boiler Protection
For Low Temperature Systems

Designed for use with Power-fin Boilers

When designing a boiler system with return water temperature
below 130°F it is necessary to protect the boiler from heat
exchanger condensation. All non-condensing boilers will develop
operational problems if they are continually exposed to system
return water temperatures below 130°F. Typical systems that
require this protection are water source heat pump systems, in­floor radiant heat systems, greenhouse heating, soil heating,
process operations and manufacturing operations. Additionally,
heating systems that utilize nighttime setback, night/weekend
shutdown, or outdoor reset control strategies should incorporate
low water temperature protection.

To prevent low return water temperatures to the boiler and combat operational problems, the
system should be piped in a Primary/Secondary arrangement with a low temperature bypass.
Manual bypass systems are not the ideal solution due to the varying flow rates and varying
firing rates of the boiler. A better alternative is Lochinvar’s Motorized Low Temperature Valve
VAL30002, which is a 2-1/2” NPT threaded motorized valve electronically controlled by the
Power-fin’s Smart System control.

Cold

Water

Tempered

Water

Hot

Water

VAL30002 Valve Dimensions s VAL30002 Typical Piping g

MTV-01

04/09-Printed in U.S.A.