Replacement Parts List

Ref # Rheem Part # Description
RTGH-84XLN-1 RTGH-90XLN-1 RTGH-95XLN-1
1 RTG20239AC Control Board ● ● ●
RTG20006AR Inlet Thermistor - White ● ● ●
RTG20212BC Heat Exchanger Thermistor - Yellow ● ● ●
RTG20006BB Outlet Thermistor - Black ● ● ●
RTG20006UW Ambient Thermistor - Blue ● ● ●
RTG20239M Thermistor Wiring Harness ● ● ●
2 RTG20239AY Gas Control Valve ● ● ●
RTG20239AD Gas Control Wiring Harness ● ● ●
3 RTG20235U Burner Assembly ● ● ●
RTG20235C Igniter Coil ● ● ●
RTG20212BD Igniter Rod (IG) (with gasket) ● ● ●
4 RTG20212AB Blower Motor ● ● ●
RTG20212AC Blower Case ● ● ●
5 RTG20235W Burner Manifold - LP ● ● ●
5 RTG20239A Burner Manifold NAT ● ● ●
RTG20212BE Flame Rod FL-1 (with gasket) ● ● ●
RTG20235AX Flame Rod Wire (White) ● ● ●
6 RTG20164K Gas Inlet Connector ¾” ● ● ●
7 RTG20164L Water Control Valve ● ● ●
RTG20235X Bypass Assembly ● ● ●
8 RTG20164J Water Inlet Connector ¾” ● ● ●
9 RTG20164AK Inlet Water Filter ● ● ●
10 RTG20074CE Hot Water Outlet Connector ¾” ● ● ●
RTG20006AV Drain Plug with Relief ● ● ●
11 RTG20164AA Remote Control Terminal Block ● ● ●
RTG20212U Remote Control Terminal ● ● ●
12 RTG20239AX Neutralization Replacement Kit ● ● ●
13 RTG20239Y Front Cover - No Labels or Branding ● ● ●
RTG20074EH Gas Shutoff Valve ¾” ● ● ●
RTG20186 Replacement Screw Kit ● ● ●
RTG20206 Replacement O-Ring Kit ● ● ●
RTG20235AB Thermostat Assembly ● ● ●
Parts for RTGH-84XLN-1, RTGH-90XLN-1, RTGH-95XLN-1 Series
for Rheem, Ruud, Rheem-Ruud, Richmond, EcoSense and Paloma tankless water heaters | 13
See Pages 6 - 9 for additional Accessories, Manifold Systems, and Venting Options.