9
Usage and installation FAQ
- What are the most obvious advantages of a ESWH?
•
Can be installed individually or combined with a traditional system;
•
Withstand pressure;
•
Can operate with occasional tube breakages and these can be replaced easily;
•
Works well in low-irradiance day with an electric booster
- How to avoid cold water and hot water mixing?
•
If the outflow rate is limited within 8L/min, this mixing can be avoided.
- How to clean lime off heat pipes if they have been used for a long time?
•
Carefully remove collector tubes, screw loose the heat pipe, clean the top end with
chemical decontaminant.
- Why does hot water flow intermittently some times?
•
When the outflow rate is greater than the inflow, the relief valve on the top of tank will open
and suck air in; the water level inside the tank will then be temporarily lower than the outlet
connection, so hot water flow will stop.
•
It is recommended that more than two showers or hot taps shall not be used at the same
time.
- Where to install pressure-reducing valve and safety valve?
•
The pressure-reducing valve can be installed outside near the cold water connection on
the bottom of the storage tank. But the safety valve shall be installed indoors.
- What are the requirements for the piping and connections?
•
Choose good aluminium and plastic compounds with heat-resistance over 90
°
C.
And ask your local professionals to install your solar water heater.
Summary of Contents for JR-138
Page 10: ...10 Trouble Shooting...
