Metro Therm METROAIR AQUA HPM, Руководство пользователя

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(water tank) + menu item
E20
(solar collector hysteresis).
When the pump (relay R9) is activated, the heat pump and the auxilary electrical heater relay
switches off. After the pump (relay R9) is deactivated the following happens after 15 min:
• If the T5 temperature (before evaporator) is greater than 5.5 °C, the heat pump is activated.
• If the T5 temperature (before evaporator) is lower than 4.5 °C, the electrical heater relay
is activated.
Value of 4: The cooling function which activates a three-way damper, which directs the cold
exhaust air to a room with cooling requirements. This feature is controlled by the temperature
set point in menu point
E2 and the T9 sensor:
• If the T9 temperature is higher than the set point at menu point E2 , relay R9 switches on.
• If the T9 temperature is lower than the set point at menu point E2 , relay R9 switches off.
This feature is independent of the heat pump running status.
Value of 5: The cooling function which activates a three-way damper, which directs the cold
exhaust air to a room with cooling requirements. This feature is controlled by the temperature
set point at menu point E2 and the T9 sensor, but works opposite of menu item
E19 = 4:
• If the T9 temperature is higher than set point at menu point E2 , relay R9 switches off.
• If the T9 temperature is lower than set point at menu point E2 , relay R9 switches on.
This feature is independent of the heat pump running status.
Value 6: Relay R9 is ON, if the compressor is running and OFF if it is not running.
This feature is independent of the heat pump running status.
Options: 0-6
Factory setting: 0
E20: Solar collector hysteresis
Here it can set how much the temperature in the solar collector (T9) has to be above the tem-
perature in the water tank (T8), before the solar pump is to start. See menu item
E19 .
Options: 1-5 °C
Factory setting: 5 °C
E21: TX set point
In order to avoid high operating pressures in the cooling system it is necessary to reduce the
performance of the system for the last part of the heating cycle. Here the water temperature (T8)
is set at which the reduction must begin.
Options: 0-55 °C.
Factory setting: 45 °C.
E23: Tmop
7 Controls and Operations