Installation Instructions - Rinnai RU98i Installation Manual

Installation Instructions

Exhaust Vent Installation Procedures:
•
After ensuring the water heaters are mounted securely and
spaced 20.5" apart, install the appliance adapter on top of
the water heaters.
•
Exhaust Venting is designed for a 3° rise. When the water
heaters are mounted at 20.5" spacing, the height increase is
1" per water heater. A 4" diameter extension pipe is
included with the kit that must be cut to length to account
for the rise from unit to unit. After cutting, always deburr and
bevel the end of the vent piece so the sealing gaskets are not
damaged and operation of the vent system is not
compromised.
•
Install the elbows with hand cleanout cap to the 4" diameter
extension pipe. Do not cut or modify the elbow. Cleanout cap
should remain accessible for periodic inspection and access
for service when needed.
•
After combustion air and exhaust vent components are
appropriately positioned, securely fasten the "CVent
Appliance Adapter with Check Valve and Trap" to the top of
the water heater with a self tapping screw.
•
Connect the combustion air opening of the appliance adapter
to one end of the flex connector and the other end of the flex
connector to the Combustion Air Collector.
•
Connect the open end of the elbow to the exhaust header.
Combustion Air Collector
Flex Connector
hand cleanout cap
4" Extension
Appliance
Adapter
Exhaust Collector
17
Elbow
Securing Screw
Elbow
Rinnai CVent