Gree VERSATI SERIES, Руководство по обслуживанию

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4
Air to Water Heat Pump
Service Manual- Versati Series
QSPEVDU
3 FUNCTION
3.1 Cooling
In cooling mode : the refrigerant is condensed in the outdoor unit and evaporated in the indoor unit. Via the
heat exchange with water in the indoor unit, the temperature of water decreases and it releases heat while the
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the user’s requirement. Through the control of valve, the low-temperature water in the system is connected with
indoor fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature
decreases to the required range.
3.2 Heating
In heating mode : the refrigerant evaporates in the outdoor unit and is condensed in the indoor unit. Via
the heat exchange with water in the indoor unit, the water absorbs heat and its temperature increases while
the refrigerant releases heat and is condensed. With the help of wired controller, the outflow temperature
can meet the user’s requirement. Through the control of valve, the high-temperature water in the system is
connected with indoor fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor
temperature increases to the required range;
3.3 Water Heating
In water heating mode : the refrigerant evaporates in the outdoor unit and is condensed in the indoor unit.
Via the heat exchange with water in the indoor unit, the water absorbs heat and its temperature increases
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can meet the user’s requirement. Through the control of valve, the high-temperature water in the system is
connected with the coil pipe of bearing water tank, and exchanges heat with the water in the water tank so that
the temperature of water tank increases to the required range.
3.4 CWater Heating
When cooling mode exists together with the water heating mode, the user can set the priority of these two
modes based on the needs. The default priority is heat pump. That is under the default setting, if cooling mode
exists together with the water heating mode, the heat pump gives priority to cooling. In that case, water heating
can only realized with e-heater of the water tank. Inversely, the heat pump gives priority to water heating and
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3.5 Water Heating
When heating mode exists together with the water heating mode, the user can set the priority of these two
modes based on the needs. The default priority is heat pump. That is under the default setting, if heating mode
exists together with the water heating mode, the heat pump gives priority to heating. In that case, water heating
can only realized with e-heater of the water tank. Inversely, the heat pump gives priority to water heating and
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3.6 Emergency Mode
Emergency mode : this mode is only available for heating and water heating. When the outdoor unit stops
due to malfunction, it will enter the corresponding emergency mode; as to heating mode, after entering the
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temperature or indoor temperature is reached, the e-heater of indoor unit will stop running; as to water heating
mode, the e-heater of indoor unit stops while the e-heater of water tank runs. When the setting temperature or
water tank is reached, the e-heater will stop running.
3.7 Quick Water Heating
In quick water heating mode, the unit runs according to the water heating control of heat pump and the
e-heater of water tank runs at the same time.
3.8 Holiday Mode
This mode is only available for heating mode. This mode is set to keep indoor temperature or outflow
temperature in a certain range, so as to prevent water system of the unit from freezing or protect certain indoor
articles from freezing damage. (This mode requires installing indoor temperature sensor). When the outdoor
unit stops due to malfunction, the two e-heaters of the unit will run.
3.9 Forced Operation Mode
This mode is only used for refrigerant recovery and debugging of the unit.
3.10 Silent Mode
Silent mode is available in cooling, heating and water heating mode. In silent mode, the outdoor unit will
reduce the running noise via automatic control.
3.11 Disinfection Mode