Install Instructions
2
CAUTION: If the boiler protection valve is not installed, commissioned
and maintained properly, according to the instructions contained in this
manual, it may not operate correctly and may endanger the user.
CAUTION: Make sure that all the connecting pipework is water tight.
CAUTION: When making the water connections, make sure that the mixing
valve connecting pipework is not mechanically over-stressed. Over time this
could cause breakages, with consequent water losses which, in turn, could
cause harm to property and/or people.
CAUTION: Water temperatures higher than 100°F can be dangerous.
During the installation, commissioning and maintenance of the
boiler protection valve, take the necessary precautions to ensure that such
temperatures do not endanger people.
CAUTION: In the case of highly aggressive water, arrangements must
be made to treat the water before it enters the boiler protection valve, in
accordance with current legislation. Otherwise the mixing valve may be
damaged and will not operate correctly.
Leave this manual for the user.
Operation/Use
The thermostatic sensor, completely immersed in the medium, controls the movement of a shutter
that regulates the bypass flow from the boiler and toward the system. At boiler startup, the boiler
protection thermostatic mixing valve recirculates the bypass flow from the boiler to bring the boiler up
to temperature as quickly as possible. When the bypass flow from the boiler temperature exceeds the
temperature setting of the boiler protection mixing valve, the valve’s return from the system port starts
opening to produce the mixed water temperature: in this phase the system loading begins.
When the mixed flow to the boiler temperature is greater than the set point of the boiler protection
mixing valve by approximately 18°F (10°C), the bypass flow from the boiler port closes and water
returns to the boiler at the same temperature as the return flow from the system
.
SAFETY INSTRUCTION
This safety alert symbol will be used in this manual to draw attention to safety related instructions.
When used, the safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY
HAZARD.
CAUTION: All work must be performed by qualified personnel trained in the
proper application, installation, and maintenance of systems in accordance
with all applicable codes and ordinances.