Mitsubishi Heavy Industries ESA30E-25, Technical Manual

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'15 • HM-T-246
1.5 Relation between recirculation load and cylinder volume
1.5.1 Features
The CO heat pump water heater allows converting a set of one way system composed of heat pump water heater and hot
water cylinders, without change and immediately, to a recirculation system by adding up a mixing valve and a recirculation
pump at site. Its ,000 L cylinder volume composed of eight 00 L cylinders of which to cylinders (depending on the hot
of these cylinders is ,000 L, remaining to cylinders can be used as the hot water supply load. This system, in this way, is
used where recirculation load and hot water supply load are present in mixture *. With this system, risk of the short-supply
of hot water is small even if the hot water temperature is not increased remarkably so far as the recirculation load in use and
the hot water supply load are balanced well. When the water supply side of mixing valve is interrupted accidentally, hot water
use the system by lowering the hot water temperature *.
*: Take note that if anticipated balance is lost between the recirculation load and the hot water supply load, the supply of hot
water becomes likely to exhaust.
Hot water recirculation load
(see the next page)
*: Regarding as recirculation system diagram, refer to page.
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