10
OPERATION
The Apricus Tempermate warm water system is a centralised warm water plant which allows warm
water to be circulated around a building.
The system utilises a thermostatic mixing valve(s) which mixes hot and cold water in such a way as to
maintain the set temperature of the mixed water at the outlet. The TMV thermostatic element is
fully immersed into the mixed water. It then contracts or expands causing movement of the piston,
closing either the hot or cold inlets, regulating the flow rates entering the valve. If there are
variations of temperature or pressure at the inlets, the internal element automatically reacts
attempting to restore the original temperature setting.
The Apricus Tempermate Warm Water Unit may have one, two, three or four TMV’s depending
upon the unit selected. On models with more than one TMV, the valves are manifolded in parallel
and operate independently of each other to supply warm water to a common outlet.
Draw-off Mode
When a warm water outlet is opened, hot and cold water flows through the thermostatic mixing
valves, and to the opened warm water outlets.
Recirculation Mode
When no warm water is being drawn from the system, the warm water circulates through the unit
and continues to keep the water at the set temperature.
The returning water splits at the cold water inlet with a proportion returning to the TMV’s cold
inlets, and the remaining proportion returning to the TMV’s hot inlets. The proportion returning to
the hot inlets does so by flowing back up the cold water inlet pipe to the cold water supply line and
on to the boiler where it is reheated and returned to the TMVs via the hot water pipe.
THERMAL SHUT OFF
In the event of a failure of the hot or cold supply, the piston will shut off, stopping water discharging
from the mixed water outlet. The TMVs require a minimum temperature differential from hot inlet
to mixed water outlet of 10°C to ensure the correct operation of the thermal shut off feature.
Содержание tempermate
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