Installation Guide

Rinnai Tankless Water Heater Installation and Operation Manual 15
Product Product Description Image
ScaleCutter
• Part #: 103000038
Filters and reduces the amount
of scale entering the water
heater allowing for greater
water heater longevity.
ScaleCutter Refill Cartridge
• Part #: 103000039
Refill cartridge for the ScaleCutter
filter assembly.
Drain Down Kit
• Part #: 104000059
Provides freeze protection by
immediately draining the water
heater upon loss of power.
Leak Detection Kit
• Part #: RXLeakKit
Pipe cover drain pan and float
switch for use with Pipe Cover
(Part #: PCD11-SHS)
Room Air Screen
• Part #: 108000104 for 2 in.
• Part #: 108000105 for 3 in.
Recommended room air screen for
use in room air applications only.
Dedicated Return and Isolation
Valve Kit
• Part #: 107000639
Valve kit including tee, drain valve,
pressure relief valve, check valve
and isolation valves (cold and hot)
to simplify set-up of a dedicated
recirculation line.
Internal Add-on Recirculation
Conversion Kit
• Part #: RX2RXPCK
Allows a no pump model to be
converted to a pump model.
Image not shown
Ubbink 2 in. Polypropylene
(PP) Flexible Venting
• Approved for condensing,
vertical non-direct vent (room
air) applications
• Maximum equivalent length:
50 ft (15 m)
Gas Conversion Kit
Part #:
• 104000330
Converts the tankless water heater
gas type. Kit contains gas
conversion manual and conversion
rating plate label (adheres to water
heater to display new gas type).
Table 4. Accessories (Continued)
Sample Rating Plate Label
2 in. (60)
Flex Connector
Part #: 222720NPP
2 in. (60)
Condensing
Flex
Termination
Kit
Part #:
184470NPP
2 in. (60) Flex Roll X
41.5 Ft (12.5 m)
Part #: 222721NPP