Rinnai RL75E User Manual
Operation and installation manual, Outdoor tankless water heater, Warning

— Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
 
— WHAT TO DO IF YOU SMELL GAS 
 
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any phone in 
your building. 
•
Immediately call your gas supplier from a neighbor’s phone. 
Follow the gas supplier’s instructions. 
•
If you cannot reach your gas supplier, call the fire 
department. 
 
— Installation and service must be performed by a qualified 
installer, service agency or the gas supplier.
Operation and Installation Manual
INSTALLER: Leave this manual with the appliance. 
CONSUMER: Retain this manual for future reference. 
Outdoor Tankless Water Heater
ANS Z21.10.3
●
CSA 4.3
Table of Contents ..................... 2 
Consumer Safety Information ... 4 
Operating Instructions ............... 5 
Maintenance ........................... 11 
Error Codes ............................ 12 
Installation Instructions ........... 16 
Consumer Support .................. 39 
French Version ....................... 42 
RL75e
................. REU-VB2528WD-US
RL94e
................. REU-VB2735WD-US
R98LSe
............... REU-VA3237W-US
R98LSe-ASME
... REU-VA3237W-ASME
Register your product at www.rinnairegistration.com or 
call 1-866-RINNAI1 (746-6241) 
FOR OUTDOOR APPLICATIONS ONLY
If the information in these instructions is not 
followed exactly, a fire or explosion may 
result causing property damage, personal injury or death.
WARNING
The VB series (RL75e and RL94e) are certified for 
installation in manufactured (mobile) homes. 
