Installation Manual
Rinnai Tankless Rack System (TRS) Installation Manual     55 
 Installation Checklist 
13 
Complete the following checklist when installaon is complete. You should be able to answer YES to each queson. If 
you answer NO to any queson, installaon is not complete. Refer to the applicable secon in the “Rinnai Tankless 
Water Heater Installaon and Operaon Manual” for addional informaon.  
Reference the “Rinnai Tankless Water Heater Installaon and Operaon Manual” For  
Addional Informaon on the Items Below 
 INSTALLATION LOCATION  YES  NO 
Have you veried the units, vents and air intakes meet the clearance requirements? 
   
COMBUSTION AIR & VENTING  YES  NO 
Have all corrosive compounds been removed from around the combuson air inlet of the tankless water 
heaters? 
   
Have you followed the combuson air requirements to provide sucient combuson air for the tankless 
water heaters? 
   
Are the correct venng products for the installed models being ulized? 
   
Have you installed the vent screen(s) for PVC vent applicaons? 
   
Have you veried the vent systems do not exceed maximum length? 
   
PLUMBING  YES  NO 
Have you ensured that a pressure relief valve is installed with a rang that exceeds the BTU input of the 
water heater models? Refer to the rang plate on the side of each water heater for BTU input. 
   
Have the water lines been purged of all debris and the lter cleaned? Debris will damage the water heaters.  
Clean the inlet water lter by closing the cold and hot water inlet isolaon (shut-o) valves. Put a bucket 
under the lter at the boom of each water heater to catch any water that is contained inside the unit. 
Unscrew the water lter. Rinse the lter to remove any debris. Install the lter and open the isolaon 
valves. 
   
Have you veried the hot and cold water manifolds to each tankless water heater are not interchanged? 
   
Does the water supply to the heaters have adequate pressure? Minimum water pressure is 50 psi. Rinnai 
recommends 60-80 psi for maximum performance. Is the water supply free of chemicals? Did you verify the 
water supply does not exceed total hardness that will damage the heat exchangers? 
   
Have you veried that toxic chemicals were not introduced to the potable water? 
   
Did you drain the tankless water heaters 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 heaters and plumbing system? 
   
Connued on next page










