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10. Because elbow cap is made of plastic, it's consumable parts.
11. At brass parts, corrosion can be generated depending on the water quality and it cause malfunction. For
the place where corrosion can be expected, select the product made of suitable material like stainless
steel.
12. In case ingredient giving negative influence to internal parts is contained in the liquid and environment,
deterioration of internal parts can be speeded and it cause leakage and malfunction.
13. In case liquid is accumulated in the product for long-term, moving parts can be sticky and cause
malfunction.
14. Nominal size selection chart shows reference value. Suitable size differ according to piping and
environment, so around 20% safety factor is necessary for the selection of the size.
15. To avoid potential difference, do to connection different metal parts otherwise corrosion product or parts
can happen.
5.2 Precaution for use
Warning
1. Follow the designated working pressure and Max. temperature.
*Failure to follow this may result in malfunction.
2. When test operation for hot water generator, check there is no leakage by means of inspection of
connection and float vent etc.
3. When leakage of liquid happens because of foreign substance like dust on the valve disc and seat, please
clean the valve disc and seat (see 5.4 Troubleshooting).
5.3 Piping example
reducing valve
Using this product as a combination with Air Out (Air separator from water) type AO-2, it make efficiency of
air discharge higher.
Do not touch the product with bare hands in case of high-temperature fluid.
*Failure to follow this notice may result in burns.
Relief
valve
Pressure
Boiler
Caution
Float vent
Air out
Pump
5
Convector
Base board heater
■EPDT-308■
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