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3064298_201507
Maximum thermostat (MaxTh)
To protect surface heating systems (e.g. underfloor heating circuits) from excessively
high flow temperatures, temperature limiters or maximum thermostats are required.
The floating contacts of maximum thermostats and, where applicable, dew point monitors,
can be connected in series and connected to the programmable input E1.
When the contact opens, the heat source is switched off.
Dew point monitor (TPW)
A dew point monitor (accessories) is required for surface cooling systems (e.g. underfloor
heating circuit, cooling ceiling). If the cooling circuit serves several rooms with different
relative humidities, several dew point monitors must be installed and connected in series.
The monitors are fitted to the cooling circuit flow in the room to be cooled. Remove the
insulation from this area.
If required, the dew point monitor can be installed directly on the indoor unit. In this
case, the switching point must be reduced slightly, e.g. 90 % rel. humidity instead of
95 % rel. humidity.
To protect the heat pump, a dirt trap must be installed in the heating return.
Installing dirt traps or carrying out any other modifications in the supply line to
the safety valve is not permitted.
Wolf recommends a sludge separator with magnetite separator to protect the
appliance and the high-efficiency pump from dirt / sludge and magnetite.
Dirt trap
20. Connecting the heating / cooling
circuit and the DHW circuit
If no separating cylinder is being used, the minimum heating water flow rate can be
ensured by means of an overflow valve.
Overflow valve
An electronically regulated high-efficiency pump is integrated into the indoor module
Circulation pump
Used when there are several heating circuits
Hydraulic separating
cylinder (low loss header)
Do not operate via the buffer cylinder
DHW heating
- The pipe dimensions must be matched to the nominal flow rate.
- Ensure that the system is vented correctly.
- Flush the system.
Pipe dimensions
- The
heating water flow rate (m
.
)
in m
3
/h (nominal flow rate)
- The
temperature differential between the flow and return (∆t)
- The
specific heat content of the water (c)
The following parameters
are critical for the transfer of
the heat pump output to the
heating system:
Q
WP
= m x c x
∆
t (kW)
.
.
Draining the heating system
- Switch off the system (see operating instructions) and allow to cool to at least
40 °C, otherwise there is a risk of scalding
- Safeguard the heating system against accidental reconnection of the power supply
- Open the drain valve (boiler drain & fill valve), for example on the indoor module
- Open the air vent valves on the heating circuits
- Drain off the heating water