Rinnai REU-VEP2730FFD-US Installation And Operation Manual page 41

Is the discharge line from the PRV pitched downward and does it terminate 6 in. (152
mm) above the drain?
Is the discharge end of the PRV line plain (unthreaded) and a minimum of 3/4 in.
diameter?
Is the PRV 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 plugged and that reducing fittings, valves, or other
restrictions are not installed in the relief line?
6
GAS SUPPLY
Did you verify the gas system is appropriately sized?
Did you verify the water heater is rated for the gas type supplied?
Have you performed a gas line and connection leak test?
Did you install a manual gas control valve in the gas line to the water heater?
Is the inlet gas pressure within limits?
Did you purge the gas line of air or any debris before connecting the water heater?
7 RECIRCULATION
Have parameter settings for recirculation been properly set?
Is the recirculation pipe length less than the maximum allowed length?
Did you drain the tankless water heater if not intended to be used immediately?
Did you fill water and remove air well by trial operation?
Have you performed a leak and pressure test on the crossover valve installation?
(Crossover Mode Only) Was the crossover valve installed at the furthest fixture from the
water heater?
Rinnai Tankless Water Heater Installation and Operation Manual
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