Replacement Parts List

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9
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7
8
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5
1
4
3
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8a
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Parts for 66DV Series (out of production)
Fuel Type Program Chips
Fuel Type Description RT-66DV RTG-66DV-1
Natural Gas Program Chip - Natural Gas RTG20164Y RTG20164Y
Propane Program Chip - LP Gas RTG20164X RTG20164X
185°F Temperature Upgrade Kits - Commercial and Hydronic
Fuel Type Description RT-66DV RTG-66DV-1
Natural Gas Natural Gas Temperature Upgrade Kit RTG20192A RTG20192A
Propane LP Gas Temperature Upgrade Kit RTG20192B RTG20192B
Only fuel-specific chips are required for replacement of control boards. Altitude is controlled through dip switch settings
and does not require a program chip. See Use and Care Manual for details.
185°F Temperature Upgrade Kits - Commercial and Hydronic allow the 66DV models to operate at a higher water
temperature for commercial applications. The kit includes a program chip along with a commercial warranty and
instructions. Each water heater in a commercial installation would require a kit.
32 | for Rheem, Ruud, Rheem-Ruud, Richmond, EcoSense and Paloma tankless water heaters