Water Supply Connections (Fig.20;21) - TESY AquaThermica Compact HPWH 3.2 100 Installation And Maintenance Manual

If it is considered necessary in order to prevent flow noise, sound mufflers can be mounted.
Fit the pipes, the wall through holes and the connections to the heat pump with vibration damping systems.
WARNING!
Тhe simultaneous operation of an open-flue firebox (e.g. an open-flue fireplace) together with the heat pump
causes a dangerous environmental pressure drop. This could cause the back-flow of exhaust gas into the envi-
ronment itself.
• Do not operate the heat pump together with an open-flue firebox.
• Use only sealed-chamber fireboxes (approved) with a separate duct for
combustion air.
• Keep the doors to the boiler room closed and hermetically sealed if they do
not have a combustion air supply in common with inhabited areas.
6.4.

Water supply connections (Fig.20;21)

The illustration (Fig. 20 & 21) shows an example of a water supply connection.
Fig. 20 Watter supply connection
1. Expansion vessel (optional)
2. Safety valve 8Bar.
3. Back flow preventer.
4. Pressure regulator (optional)
5. Main water tap
When the water hardness is particularly high (higher than 25°F), it is recommended to use a water softener, prop-
erly calibrated and monitored; in this case the residual hardness should not fall below 15°F.
WARNING!
• Usage of this device at temperature and pressure level above prescribed leads to warranty violation!
• This device is intended for heating of potable water in liquid state. Using different fluids in different states leads
to warranty violation!
• Dissimilar Metals cause galvanic corrosion. Therefore pipes, joints and fittings of dissimilar metals should be con-
nected to the appliance by means of dielectric separators
WARNING!
• It is obligatory for the system installer to fit an 8-bar safety valve No2 on the cold water intake pipe (Fig. 20).
• It is forbidden a presence of any stop valves, taps between the safety valve and storage tank!
The safety equipment for protection against over pressure must be operated regularly in order to remove limes-
cale deposits and to check that it is not blocked.
The drain pipe, connected to the safety valve must be installed sloping continuously downwards and, in a place,
where it is protected against the formation of ice.
An expansion vessel No1 (Fig.20) could be installed in order to absorb water expansion due to temperature varia-
tion. Pressure regulator No4 and expansion vessel should be calculated together by qualified person.
WARNING!
The heat pump for the production of domestic hot water is capable of heating water up to more than 65°C. For this
reason, as a protection against burns, it is advisable to install an automatic thermostat mixing equipment No7 to the
hot water pipe (Fig. 20)
Fig. 21 Condense drain connection
Obligatory elements to be installed:
15
6. Tap to drain off the appliance.
7. Thermostatic mixing valve (optional)
8. Hot water consumers
9. Dielectric connectors