Installation Location; Combustion Air & Venting; Isolation Valves; Pressure Relief Valve (Prv) - Rinnai SENSEI RX199i Installation And Operation Manual

Complete the following checklist when water heater installation is complete. You should be able to
answer YES to each question. If you answer NO to any question, installation is not complete. Refer
to the applicable section in the Rinnai Tankless Water Heater Installation and Operation Manual for
additional information.
For assistance, contact your local dealer or distributor, or call Rinnai Customer Care at 1-800-621-
9419.
1

INSTALLATION LOCATION

Have you verified the unit, vent and air intakes meet the clearance requirements?
2
COMBUSTION AIR & VENTING
Have all corrosive compounds been removed from around the combustion air inlet of
the tankless water heater?
Have you followed the combustion air requirements to provide sufficient combustion air
for the tankless water heater?
Are the correct venting products for the installed model being utilized?
Have you installed the vent screen (s) for PVC vent applications?
Have you verified the vent system does not exceed maximum length?
PLUMBING
3
Have the water lines been purged of all debris and the filter cleaned?
Have you verified the hot and cold water lines to the tankless water heater are
not interchanged?
Does the water supply to the heater have adequate pressure? Is it free of chemicals?
Did you verify it does not exceed total hardness that will damage the heat exchanger?
Have you verified that no toxic chemicals were introduced to the potable water?
Did you drain the tankless water heater if not intended to be used immediately?
Have water quality issues (if any) been addressed?
Have you performed the leak and pressure test for the tankless water heater and
plumbing system?

ISOLATION VALVES

4
Are isolation valves installed? Isolation valves are not required, but highly recommended.
5

PRESSURE RELIEF VALVE (PRV)

Does the PRV comply with the standard for Relief Valves for Hot Water Supply
Systems, ANSI Z21.22/CSA 4.4 or the ANSI/ASME Boiler and Pressure Vessel Code
Section IV?
Did you verify the PRV is rated up to 150 psi and (at least) the maximum Btu/hr of the
tankless water heater?
Is the discharge from the PRV piped to the ground or into a drain system as per local
codes?
Is the discharge line from the PRV pitched downward and does it terminate 6 in. (152
mm) above the drains?
Is the discharge end of the line plain (unthreaded) and a minimum of 3/4 in. diameter?
Is the discharge line material suitable for at least 180°F (82°C) water?
Did you take measures to protect the PRV and PRV discharge line from freezing?
Have you verified the PRV is not plumbed with the condensate drain line?
Have you verified the PRV is not plugged and that reducing fittings, valves, or other
restrictions are not installed in the relief line?
Rinnai Tankless Water Heater Installation and Operation Manual
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