Rinnai RHFE-750ETRA User Manual

 

22 

            Rinnai Corporation RHFE-750ETRA 

 

  Venting   

5.  Lock the ties 

 

Pulling hard on the left and right hand ties, clip 
the ties over the notches inside the sleeve.  You 
should be able to pull the ties 2 or 3 notches past 
the starting point.  Cut the ties, leaving about 3/4 
inch (20 mm) past the notch.  Bend the ties back 
into the sleeve and parallel to the wall. 

6.  Attach Inside Connection Assembly 

 

Push the assembly into the terminal tube. 

 

Attach the inside connection with 3 screws.  The 
inside connection can still be turned if necessary. 

Locking ties 

Sleeve 

•  Only vent components that are certified and listed 

with this appliance may be used. 

•  The maximum length is 33 feet (10 m) with a 

maximum of 3 elbows. 

•  The venting length (horizontal and vertical) that is 

draining back toward the appliance is limited to 
8.2 feet (2.5 m).  A condensate collector must be 
installed at this point if more venting length is 
needed.  Dispose of condensate per local codes.  
The condensate trap must contain a minimum of 3 
inches (75 mm) of water. 

•  Slope any horizontal venting 1/4 inch per foot (19 

mm / m), towards the outside so that it can drain 
out of the termination -OR- slope 1/4 inch per foot 
(19 mm / m), toward the appliance which has a 
condensate tray. 

•  Do not combine vent components from different 

manufacturers. 

•  The vent system must vent directly to the outside 

of the building and use outside air for combustion. 

•  Venting should be as direct as possible with a 

minimum number of pipe fittings. 

•  Avoid dips or sags in horizontal vent runs by 

installing supports per the vent manufacturer’s 
instructions. 

•  Support horizontal vent runs every four feet and 

all vertical vent runs every six feet or in 
accordance with local codes. 

•  Vent diameter must not be reduced. 
•  Do not connect the venting system with an 

existing vent or chimney. 

•  Do not common vent with the vent pipe of any 

other appliance. 

•  The horizontal termination must not be used as a 

vertical termination; the vertical termination must 
not be used as a horizontal termination. 

•  For vertical venting, an additional 2 inch elbow, 

part number 308000010, is required and available 
from Rinnai for connecting the exhaust to the 
adapter. 

•  Refer to the instructions of the vent system 

manufacturer for component assembly 
instructions. 

•  If the vent system is to be enclosed, it is 

suggested that the design of the enclosure shall 
permit inspection of the vent system.  The design 
of such enclosure shall be deemed acceptable by 
the installer or the local inspector. 

 

If it becomes necessary to access an enclosed vent 
system for service or repairs, Rinnai is not responsible 
for any costs or difficulties in accessing the vent 
system.  Warranty does not cover obtaining access to 
an enclosed vent system.