Pressure Relieve Valve - Rinnai SENSEI RU199i Manual De Instalación Y Operación

3.8 Pressure Relief Valve
Water discharged from the pressure relief valve could cause severe burns instantly or death
WARNING
from scalds.
Guidelines
An approved pressure relief valve is required by the American National Standard (ANSI Z21.10.3) for all water heating
systems and shall be accessible for servicing. When connecting a pressure relief valve, follow the guidelines below:
•
The pressure relief valve must comply with the standard for Relief Valves and Automatic Gas Shutoff Devices for
Hot Water Supply Systems ANSI Z21.22 and /or the standard Temperature, Pressure, Temperature and Pressure
Relief Valves and Vacuum Relief Valves, CAN1-4.4.
•
The pressure relief valve must be rated up to 150 psi and to at least the maximum Btu/hr of the appliance.
•
The discharge from the pressure relief valve should be piped to the ground or into a drain system per local codes.
•
The pressure relief valve must be manually operated once a year to check for correct operation.
•
The discharge line from the pressure relief valve should pitch downward and terminate 6 in. (152 mm) above
drains where discharge will be clearly visible.
•
The discharge end of the line shall be plain (unthreaded) and a minimum of 3/4 in. nominal pipe diameter. The
discharge line material must be suitable for water at least 180° Fahrenheit.
•
The pressure relief valve is assembled to the pressure relief valve adapter as illustrated on the next page. DO NOT
place any other valve or shut off device between the pressure relief valve and the water heater.
•
If a pressure relief valve discharges periodically, this may be due to thermal expansion in a closed water supply
system. Contact the water supplier or local plumbing inspector on how to correct this situation. Do not plug the
pressure relief valve.
•
The American National Standard (ANSI Z21.10.3) does not require a combination temperature and pressure relief
valve for this appliance. However, local codes may require a combination temperature and pressure relief valve.
•
Protect pressure relief valve and pressure relief valve discharge line from freezing. Do not plug or restrict flow of
the pressure relief valve.
DO NOT plumb the pressure relief valve with the condensate drain; both must be plumbed independently
to drain.
DO NOT plug the pressure relief valve and do not install any reducing fittings or other restrictions in the
relief line. The pressure relief line should allow for complete drainage of the valve and the line.
DO NOT place any other valve or shutoff device between the pressure relief valve and the water heater.
Rinnai Tankless Water Heater Installation and Operation Manual 43