Water Piping - Airwell AW-WHPMA04-H91 Manual De Instalación

9.4 Water piping

All piping lengths and distances have been taken into consideration.
The maximum allowed thermistor cable length is 20m. This is the maximum
allowable distance between the domestic hot water tank and the unit (only for
installations with a domestic hot water tank).The thermistor cable supplied with
the domestic hot water tank is 10m in length.In order to optimize efficiency we
recommend installing the 3-way valve and the domestic hot water tank as close
as possible to the unit.
If the installation is equipped with a domestic hot water tank (field supply), please refer to the domestic hot water tank
Installation And Owner's Manual. If there is no glycol (anti-freeze) in the system there is a power supply or pump failure,
drain the system (as shown in the figure below).
If water is not removed from the system in freezing weather when unit is not used, the frozen water may damage the
water circle parts.
9.4.1 Check the water circuit
The unit is equipped with a water inlet and water outlet for connection to a water circuit. This circuit must be provided by a
licensed technician and must comply with local laws and regulations.
The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive corrosion
of the water piping.
Example：
Outdoor
1
Modbus
12
Coding Assembly unit
1 Outdoor unit
2 User interface(accessory)
Balance tank (Field supply)
4
4.1 Automatic bleed valve
Drainage valve
4.2
P_o: Outside circulation pump (Field supply)
5
10 Expansion vessel(field supply)
Requirements
NOTE
NOTE
2
10
4.1
4
14
4.2
15
14
16 16
Coding
12
14
16
19
20
31
Thermistor cable length minus 2m.
Indoor
5
FHL1
Assembly unit
Filter (Accessory)
7 Shut-off valve (Field supply)
15 Filling valve (Field supply)
9
Drainage valve (Field supply)
Collector/distributor (Field supply)
11 Bypass valve (field supply)
FHL Floor heating loop (Field supply)
1...n
Valve
19
20
FHL2 FHLn