Installation Instructions

Assembly and installation 5
0020147164_04 aroTHERM Installation instructions 15
1. Insulate the lines (including those running below
ground) with UV-resistant and high-temperature-res-
istant insulation between the product and the heating
installation.
2. In order to avoid transferring vibrations to the surround-
ing buildings, use flexible connection pipes on the
product that have a length of at least 0.75 m.
3. When the product is not installed at the highest point in
the heating circuit, install additional purging valves in
suitable places.
4. Install the following accessories in the heating return.
Installation without decoupling hydraulic module
– Drain cock
– Air separator (if required)
– Dirt filter
– An expansion vessel suitable for the complete hydraulic
installation
– Expansion relief valve 0.3 MPa (3 bar)
– Pressure gauge (recommended)
Note
If you use glycol, you must collect it at the
expansion relief valve to prevent environ-
mental pollution.
0.75 m min.
1
4
5
6
7
3
2
1 Connection hose in the
heating flow to the building
(on-site)
2 O-ring seal
3 Covering cap
4 Heating flow connection
(diameter 1 1/4") to the
building
5 Heating return connection
(diameter 1 1/4") to the
heat pump
6 Connection hose in the
heating return to the heat
pump (on-site)
7 Insulation (on-site)
5. Remove the covering caps (3) from the product's hy-
draulic connections.
6. Install a dirt filter in the heating circuit return between
two stop valves so that the filter can be cleaned regu-
larly.
7. Install a flexible connection pipe (1) and (6) (to be
provided on-site) with an O-ring and a stop valve to
each of the connections for the heat pump heating flow
and return.
8. Check the connections for tightness.
5.3.2 Installing system diagram 8, variant E
1. Install the system in accordance with system diagram 8,
variant E (→ Page 30).
Note
In this system, the circulation pump of the
heat pump functions as a heating pump. It
is also in operation when only the boiler is in
operation.
2. On start-up, set system diagram 8 on the controller.
3. In order to guarantee operation with two heat generat-
ors, install the flow temperature sensor.
4. Connect the eBUS-compatible boiler using a bus
coupler on the eBUS line.
5.3.3 Installing system diagram 8, variant F
1. Install the system in accordance with system diagram 8,
variant F (→ Page 30).
2. On start-up, set system diagram 8 on the controller.
3. In order to guarantee a minimum circulation water
volume, install a differential-pressure bypass valve.
4. In order to guarantee the product's underfloor protective
circuit, install a limit thermostat.
5. In order to guarantee the hot water generation using the
heat pump, install a cylinder sensor and a 3-way valve.
5.3.4 Installing system diagram 10, variant B
1. Install the system in accordance with system diagram
10, variant B (→ Page 30).
2. On start-up, set system diagram 10 on the controller.
3. In order to guarantee a minimum circulation water
volume, install a differential-pressure bypass valve.
4. In order to guarantee that the unit can be operated with
an auxiliary heating module, install the flow temperature
sensor.
5. In order to guarantee the hot water generation using the
heat pump, install a cylinder temperature sensor and a
3-way valve.
6. In order to guarantee the product's underfloor protective
circuit, install a limit thermostat.
7. Install an auxiliary electric heater on-site.
8. Set the hot water temperature for the pre-heating stage
on the system controller and the desired hot water tem-
perature on the on-site auxiliary heater.
5.3.5 Installing system diagram 12, variant A
1. Install the system in accordance with system diagram
12, variant A (→ Page 30).
2. On start-up, set system diagram 12 on the controller.
3. Connect the area valves.
4. In order to guarantee a minimum circulation water
volume, install a differential-pressure bypass valve.
5. In order to guarantee the product's underfloor protective
circuit, install a limit thermostat.
6. In order to guarantee that the unit can be operated with
an auxiliary heating module, install the flow temperature
sensor.