{"id":1018,"date":"2023-02-17T00:43:51","date_gmt":"2023-02-17T00:43:51","guid":{"rendered":"https:\/\/help.noritz.com\/?post_type=ht_kb&#038;p=1018"},"modified":"2025-10-22T20:05:55","modified_gmt":"2025-10-22T20:05:55","slug":"hexreplacement","status":"publish","type":"ht_kb","link":"https:\/\/help.noritz.com\/index.php\/knowledge-base\/hexreplacement\/","title":{"rendered":"Heat Exchanger Replacement Procedure"},"content":{"rendered":"\n<p>The following list has downloadable PDFS for reference in replacing a Noritz Tankless heat exchanger. See the list below for the models in question.<\/p>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-danger\">This information is meant for professional servicer use only. Any attempt to do this replacement yourself may result in voided warranty and you assume all risk.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N-069M and N-063S<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;N-063S-1-LP, N-063S-1-NG, N-063S-CAN-LP, N-063S-CAN-NG, N-063S-LP, N-063S-NG, N-063S-OD-LP, N-063S-OD-NG, N-069M-1-LP, N-069M-1-NG, N-069M-CAN-LP, N-069M-CAN-NG, N-069M-LP, N-069M-NG, N-069M-OD-LP, N-069M-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/n-069m_and_n-063s_heat_exchanger.pdf\">N-069M  &amp; N-063S HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">N-084M and N-069M-DV<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;N-069M-DV-CAN-LP, N-069M-DV-CAN-NG, N-069M-DV-LP, N-069M-DV-NG, N-084M-CAN-LP, N-084M-CAN-NG, N-084M-DV-CAN-LP, N-084M-DV-CAN-NG, N-084M-DV-LP, N-084M-DV-NG, N-084M-LP, N-084M-NG, N-084M-ASME-LP, N-084M-ASME-NG, N-084M-DV-ASME-LP, N-084M-DV-ASME-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/n-084m_and_n-069m-dv_heat_exchanger.pdf\">N-084M &amp; N-069M HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">N-132M &#8211; N-1321M &#8211; NC380<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;N-132M-CAN-LP, N-132M-CAN-NG, N-132M-LP, N-132M-NG, N-132M-ASME-LP, N-132M-ASME-NG, NC380-SV-ASME-LP, NC380-SV-ASME-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/n-132m_n-1321m_and_nc380_heat_exchanger.pdf\">N-132M &#8211; N-1321M &#8211; NC380 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NR50 NR66 and NR71<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NR50-OD-LP, NR50-OD-NG, NR66-OD-LP, NR66-OD-NG, NR66-SV-LP, NR66-SV-NG, NR71-OD-LP, NR71-OD-NG, NR71-SV-LP, NR71-SV-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/nr50_nr66_and_nr71_heat_exchanger.pdf\">NR50, NR66 &amp; NR71 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NR501, NR662<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NR501-OD-LP, NR501-OD-NG, NR662-OD-LP, NR662-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/skj70nlfor_501_sml.pdf\">NR501 &amp; NR662 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC661<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NRC661-DV-LP, NRC661-DV-NG, NRC661-OD-LP, NRC661-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/skj70f6-1for_NRC661_sml.pdf\">NRC661 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC663 (EZTR40)<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NRC663-FSV-LP(EZTR40), NRC663-FSV-NG(EZTR40)<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/skj70x_EZTR40.pdf\">NRC663 (EZTR40) HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC711 , NRC661A<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NRC661A-DV-LP, NRC661A-DV-NG, NRC661A-OD-LP, NRC661A-OD-NG, NRC711-DV-LP, NRC711-DV-NG, NRC711-OD-LP, NRC711-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/skj70rffor_NRC661_sml.pdf\">NRC711 , NRC661A HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NR83 Series<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GQ-2457WS US LP (NR83OD), GQ-2457WS US NG (NR83OD), GQ-2457WS-FFA US LP (NR83DVC), GQ-2457WS-FFA US NG (NR83DVC), NR83-DVC-LP, NR83-DVC-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/hex_replacement_procedure_skj70vdrev.0516_nr83.pdf\">NR83 series HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC83 and NRC98 GQ-C2857WS<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GQ-C2857WS US LP (NRC98OD), GQ-C2857WS US NG (NRC98OD), GQ-C2857WS-FF US LP (NRC98DV), GQ-C2857WS-FF US NG (NRC98DV), NRC83-DV-LP, NRC83-DV-NG, NRC83-OD-LP, NRC83-OD-NG, NRC98-DV-LP, NRC98-DV-NG, NRC98-OD-LP, NRC98-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/hex_replacement_procedure_skj70vbrev.0516_nrc98_nrc83.pdf\">NRC83 and NRC98 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">N-0751M &#8211; NR98 &#8211; NC199<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;N-0751M-DV-LP, N-0751M-DV-NG, NR98-DVC-CA-LP, NR98-DVC-CA-NG, NR98-DVC-LP, NR98-DVC-NG, NR98-OD-LP, NR98-OD-NG, NR98-SV-LP, NR98-SV-NG, NC199-DVC-CA-LP, NC199-DVC-CA-NG, NC199-DVC-LP, NC199-DVC-NG, NC199-OD-LP, NC199-OD-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/nr98_nc199_and_n-0751m_heat_exchanger.pdf\">NR98 NC199 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NR981 NC1991 GQ-2857WX GQ-2857WZ<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GQ-2857WX US LP (NR98OD), GQ-2857WX US NG (NR98OD), GQ-2857WX-F US LP (NR98SV), GQ-2857WX-F US NG (NR98SV), GQ-2857WX-FFA US LP (NR98DVC), GQ-2857WX-FFA US NG (NR98DVC), GQ-2857WZ US LP (NC199OD), GQ-2857WZ US NG (NC199OD), GQ-2857WZ-FFA US LP (NC199DVC)<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/hex_replacement_procedure_skj70vrev.0516_nr981_nc1991.pdf\">NR981 NC1991 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NR111 and NC250<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NR111-DV-LP, NR111-DV-NG, NR111-OD-LP, NR111-OD-NG, NR111-SV-LP, NR111-SV-NG, NC250-DV-ASME-LP, NC250-DV-ASME-NG, NC250-SV-ASME-LP, NC250-SV-ASME-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/nr111_nc250_and_n-0931m_heat_exchanger.pdf\">NR111 &amp; NC250 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC111 and NCC199<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;NRC111-DV-LP, NRC111-DV-NG, NRC111-SV-LP, NRC111-SV-NG, NCC199-DV-LP, NCC199-DV-NG, NCC199-SV-LP, NCC199-SV-NG<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/nrc111_and_ncc199_heat_exchanger.pdf\">NRC111 &amp; NCC199 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRC1111 NCC1991 NCC1992 GQ-C3257WX GQ-C3257WX US<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GQ-C3257WX US LP (NRC111OD), GQ-C3257WX US NG (NRC111OD), GQ-C3257WX-FF US LP (NRC111DV), GQ-C3257WX-FF US NG (NRC111DV), GQ-C3257WZ US LP (NCC199OD), GQ-C3257WZ US NG (NCC199OD), GQ-C3257WZ-FF US LP (NCC199DV), GQ-C3257WZ-FF US NG (NCC199DV), NCC1991-DV-LP<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/hex_replacement_procedure_skj70rqrev.0516.pdf\">NRC111 NCC1991 NCC1992 HEX Replacement (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span style=\"text-decoration: underline;\">GQ59<\/span> EZ98 EZ111 NCC199CDV NRCB180 NRCB199<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GHQ-C2801WX-FF US LP (NRCB180DV), GHQ-C2801WX-FF US NG (NRCB180DV), GHQ-C3201WX-FF US LP (NRCB199DV), GHQ-C3201WX-FF US NG (NRCB199DV), GQ-C2859WX-FF US LP (EZ98DV), GQ-C2859WX-FF US NG (EZ98DV), GQ-C3259WX-FF US LP (EZ111DV), GQ-C3259WX-FF US NG (EZ111DV)<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/ez98_ez111_ncc199cdv_nrcb180_nrcb199_heat_exchanger_replacement_sml.pdf\">EZ98 EZ111 NCC199CDV NRCB180 NRCB199 (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span style=\"text-decoration: underline;\">GQ60 <\/span>EZ98, EZ111, NRCR, NCC199CDV<\/h2>\n\n\n\n<p><strong>Models:<\/strong> GQ-C3260WX-FF US LP (EZ111DV), GQ-C3260WX-FF US NG (EZ111DV), GQ-C2860WX-FF US LP (EZ98DV), GQ-C2860WX-FF US NG (EZ98DV), GQ-C3260WXQ-FF US LP (NRCR111DV), GQ-C3260WXQ-FF US NG (NRCR111DV), GQ-C2660WXQ-FF US NG (NRCR92DV),  GQ-C2660WXQ-FF US LP (NRCR92DV), GQ-C3260WZ-FF US LP (NCC199CDV), GQ-C3260WZ-FF US NG (NCC199CDV)<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/heat_exchanger_replacement_gq60_series_sml.pdf\">EZ98, EZ111, NRCR, NCC199CDV (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NCC300DV, NCC300OD<\/h2>\n\n\n\n<p><strong>Models:<\/strong>&nbsp;GQ-C5032WZ US LP (NCC300OD), GQ-C5032WZ US NG (NCC300OD), GQ-C5032WZ-FF US LP (NCC300DV), GQ-C5032WZ-FF US NG (NCC300DV)<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2023\/02\/ncc300_heat_exchanger.pdf\">NCC300DV &amp; NCC300OD (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRCP982 and NRCP1112 (Grey Case)<\/h2>\n\n\n\n<p><strong>Models:<\/strong>\u00a0NRCP982-DV-NG, NRCP982-DV-LP, NRCP1112-DV-NG, NRCP1112-DV-LP<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2025\/10\/NRCP-Heat-Exchanger-Replacement.pdf\">NRCP982 &amp; NRCP1112 [Grey Case]  (PDF)<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">NRCP98 and NRCP111 (2019, White Case)<\/h2>\n\n\n\n<p><strong>Models:<\/strong>\u00a0NRCP98-DV-NG, NRCP98-DV-LP, NRCP111-DV-NG, NRCP111-DV-LP<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2025\/10\/NRCP2019_Heat_Exchanger_Replacement.pdf\">NRCP98 &amp; NRCP111 [White Case]  (PDF)<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The following list has downloadable PDFS for reference in replacing a Noritz Tankless heat exchanger. See the list below for the models in question. N-069M and N-063S Models:&nbsp;N-063S-1-LP, N-063S-1-NG, N-063S-CAN-LP, N-063S-CAN-NG, N-063S-LP, N-063S-NG, N-063S-OD-LP, N-063S-OD-NG, N-069M-1-LP, N-069M-1-NG, N-069M-CAN-LP, N-069M-CAN-NG, N-069M-LP, N-069M-NG, N-069M-OD-LP, N-069M-OD-NG N-084M and N-069M-DV Models:&nbsp;N-069M-DV-CAN-LP, N-069M-DV-CAN-NG, N-069M-DV-LP, N-069M-DV-NG,&#8230;<\/p>\n","protected":false},"author":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[17,2],"ht-kb-tag":[55,142],"class_list":["post-1018","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-professionals-questions","ht_kb_category-technical-tips","ht_kb_tag-heat-exchanger","ht_kb_tag-replacement"],"_links":{"self":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/comments?post=1018"}],"version-history":[{"count":18,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1018\/revisions"}],"predecessor-version":[{"id":1714,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1018\/revisions\/1714"}],"wp:attachment":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/media?parent=1018"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-category?post=1018"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-tag?post=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}