Replacement Parts List

Ref # Rheem Part # Description
RTGH-84X RTGH-95X
RTGH-84XL RTGH-90XL RTGH-95XL
1 RTG20223P Control Board ● ●
RTG20239B Control Board ● ● ●
RTG20223D Inlet Thermistor - White ● ●
RTG20006AR Inlet Thermistor - White ● ● ●
RTG20223G Heat Exchanger Thermistor - Green ● ●
RTG20212BC Heat Exchanger Thermistor - Yellow ● ● ●
RTG20223H Outlet Thermistor - Black ● ●
RTG20006BB Outlet Thermistor - Black ● ● ●
RTG20223J Ambient Thermistor - Blue ● ●
RTG20006UW Ambient Thermistor - Blue ● ● ●
RTG20223W Thermistor Wiring Harness ● ●
RTG20239M Thermistor Wiring Harness ● ● ●
2 RTG20212V Gas Control Valve ● ● ● ● ●
RTG20223V Gas Control Wiring Harness ● ●
RTG20239L Gas Control Wiring Harness ● ● ●
3 RTG20212W Burner Assembly ● ● ● ● ●
RTG20235C Igniter Coil ● ● ● ● ●
RTG20212BD Igniter Rod (IG) (with gasket) ● ● ● ● ●
4 RTG20212AB Blower Motor ● ● ● ● ●
RTG20212AC Blower Case ● ● ● ● ●
5 RTG20212F Burner Manifold LP ● ●
5 RTG20235B Burner Manifold - LP ● ● ●
5 RTG20212X Burner Manifold NAT ● ●
5 RTG20239A Burner Manifold NAT ● ● ●
RTG20212BE Flame Rod FL-1 (with gasket) ● ● ● ● ●
RTG20212P Flame Rod Wire (White) ● ● ● ● ●
6 RTG20164K Gas Inlet Connector ¾” ● ● ● ● ●
7 RTG20223E Water Control Valve ● ●
RTG20164L Water Control Valve ● ● ●
RTG20164M 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 RTG20223F Neutralization Replacement Kit ● ●
RTG20239N Neutralization Replacement Kit ● ● ●
13 RTG20223A Front Cover - No Labels or Branding ● ● ● ● ●
RTG20074EH Gas Shutoff Valve ¾” ● ● ● ● ●
RTG20186 Replacement Screw Kit ● ● ● ● ●
RTG20206 Replacement O-Ring Kit ● ● ● ● ●
Parts for RTGH-84, RTGH-95 X and XL Series
for Rheem, Ruud, Rheem-Ruud, Richmond, EcoSense and Paloma tankless water heaters | 21
See Pages 6 - 9 for additional Accessories, Manifold Systems, and Venting Options.