Immergas MAGIS M4-30 Use And Installation page 31

• TBH (tank booster heater) control.
The TBH function is set on the control panel (Chap. 10.1 Overview of DIP switch settings)
1) When the TBH is set so as to be valid, TBH can be activated by means of the FAST DHW function on the control panel;
in DHW mode, TBH will be activated automatically when the initial temperature T5 of the domestic hot water is too low
or when the target temperature of the domestic hot water is too high at low room temperature.
2) When the TBH is set so as to be valid, M1M2 can be set so as to be valid on the control panel, TBH will be activated if
the potential-free contact M1M2 closes.
• Solar energy control.
The hydraulic module recognises the solar energy signal by judging Tsolar or receiving the signal SL1SL2 from the control
panel (Chap. 10.5.15 INPUT DEFINE). The recognition method can be set by means of the SOLAR INPUT on the control
panel. See Chap. 9.7.6/1) "For active solar station contact" for wiring.
1) When Tsolar is set so as to be valid, solar energy is at ON when Tsolar is sufficiently high, P_s starts to operate; solar
energy is OFF when Tsolar is low, P_s stops.
2) When the control SL1SL2 is set so as to be valid, solar energy activates (ON) after having received the control panel
solar kit signal, P_s starts to operate. Without the solar kit signal, solar energy deactivates (OFF), P_s stops.
CAUTION
The outlet water can reach a maximum temperature of 70°C, pay attention to burns.
NOTE
Make sure to insert the 3-way valve (SV1) correctly. For further details, see section 9.7.6 "Connection for other com-
ponents".
With room temperatures extremely low, the domestic hot water is only heated by TBH,which guarantees that the heat
pump can be used for space heating with the maximum capacity.
Details on configuration of the storage tank for domestic hot water for low outdoor temperatures (T4DHWMIN) are
found in Chap. 10.5.1 "DHW MODE SETTING".
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