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navien ch 210 service manual

Leaking Navien CR-240 Heat Exchanger replace or repair Condensing Gas Specification Sheet Combination Boiler Optional accessories (see below) CH-180-ASME ˘ ˇ ˆ˘ ˙˝˛˚ CH-210-ASME ˆ ˘ ˇ˜ ˘ Navien America, Inc 20 Goodyear, Irvine, CA 92618 Ph: (949)420-0420 Fax: (949)420-0430 www.navienamerica.com Rev. 12/12 A B

Navien Miscellaneous Parts

Navien Miscellaneous Parts. View online or download Navien CH-210 Installation Manual. Sign In. Manuals and User Guides for NAVIEN CH-210. We have 6 NAVIEN CH-210 manuals available for free PDF download: Service Manual, Installation Manual, User's Operation Manual, Owner's Operation Manual, Operation Manual . Navien CH-210 Service Manual (155 pages), View and Download Navien CH-180 ASME installation manual online. Condensing Gas Combination Boiler. CH-180 ASME Boiler pdf manual download. Also for: Ch-210 asme, Ch-240 asme..

May 07, 2016 · Navien Ch-180 Water Heater review: boilers are JUNK. I had a Navien CH 180 Gas combination water heater/boiler system installed only six years ago. I have put in $3,000 into repairs- yes you read that right. Every repair tech that has been here has told... The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

Additionally, when I'm repairing Navien combi boilers and encounter black pipe on heating systems (which is on 95% of the Navien repair calls,) it's a given the unit wasn't properly flushed out. IF YOU OWN A NAVIEN COMBI BOILER AND HAVE BLACK IRON PIPE WITHIN THE SYSTEM, YOU NEED TO TREAT YOUR SYSTEM WITH The Fernox system. Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL

View online or download Navien CH-210 Installation Manual. Sign In. Manuals and User Guides for NAVIEN CH-210. We have 6 NAVIEN CH-210 manuals available for free PDF download: Service Manual, Installation Manual, User's Operation Manual, Owner's Operation Manual, Operation Manual . Navien CH-210 Service Manual (155 pages) View and Download Navien CH-180 ASME installation manual online. Condensing Gas Combination Boiler. CH-180 ASME Boiler pdf manual download. Also for: Ch-210 asme, Ch-240 asme.

Navien condensing tankless water heaters & boilers for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment. CH ASME Installation Manual CH ASME Installation Manual CH ASME Operation Manual CH ASME Operation Manual NaviClean Installation and Service Manual NaviClean Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Manual De Sistema Ventilacion Comun Español (USA & Canada) Find the nearest Navien Service Specialist including installers and service …

Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL Additionally, when I'm repairing Navien combi boilers and encounter black pipe on heating systems (which is on 95% of the Navien repair calls,) it's a given the unit wasn't properly flushed out. IF YOU OWN A NAVIEN COMBI BOILER AND HAVE BLACK IRON PIPE WITHIN THE SYSTEM, YOU NEED TO TREAT YOUR SYSTEM WITH The Fernox system.

Mar 09, 2016В В· Navien CH-210 NG Condensing Gas Combination Boiler. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe? "Had great customer service after a snafu with the shipping address....still arrived on time, packaging was great, and product Free appliance repair help, parts and troubleshooting advice for nonprofessionals Navien boiler troubleshooting If you have noticed any clear signs of a breakdown in your boiler, like lengthy water heating process, some part not working or unusual noise, take steps to repair it right away.

Navien CH-240 tee's), I followed the Navien CH-240 installation manual and put in the primary. General Knowledge Book Gujarati 2013 Pdf Download В· Navien Ch 240 Installation Manual Operating system: Windows , Mac , Linux , Android , IOS. Navien CH-180 Manual Online: Way Valve. Jan 25, 2017В В· I read a service manual for the newer units and they gave instructions for removing the top of the burner and flushing the outside of the coils with a low pressure water hose. I guess I could do that with the CH but it isn't mentioned anywhere in any manuals. I know flushing the coil inside wouldn't do much but I had to give it a try anyway.

Navien condensing tankless water heaters & boilers for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment. CH ASME Installation Manual CH ASME Installation Manual CH ASME Operation Manual CH ASME Operation Manual NaviClean Installation and Service Manual NaviClean Navien on demand heaters from CH series: CH-180, CH-210 and CH-240 are extra-efficient combination boilers that are designed for potable and space. 3" Diameter Furnace Concentric Vent Kit for Navien NPE, NR, CH & NCB Series Products. $75.00 Navien NPE-210A Condensing Tankless Water Heater. Navien NR-210 / Clean Water for Healthy Living.

Apr 13, 2015В В· 1967 Shelby GT500 Barn Find and Appraisal That Buyer Uses To Pay Widow - Price Revealed - Duration: 22:15. Jerry Heasley Recommended for you Mar 09, 2016В В· Navien CH-210 NG Condensing Gas Combination Boiler. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe? "Had great customer service after a snafu with the shipping address....still arrived on time, packaging was great, and product

Navien Miscellaneous Parts

navien ch 210 service manual

Navien Ch210 error code e30 Terry Love Plumbing. Jan 07, 2018 · Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time., Navien20017210A O-Ring,(Epdm 15.8 X 2.4T) Replacesbh2422017A / 20006953A (P16) Epdm (E7518) P16, Nsffor All Modelsresources:Navien Ch Condensing Gas Boiler/Water Heaternavien Ch Condensing Gas Boiler/Water Heater - Service Manual Navien Ch Condensing Gas Boiler/Water Heater - Operation Manual Navien Ch Condensing Gas Boiler/Water Heater - Installation Manual Navien Ch Condensing ….

Navien 20017210A O-Ring (Epdm 15.8 X 2.4T) Amazon.com

navien ch 210 service manual

Leaking Navien CR-240 Heat Exchanger replace or repair. Mar 09, 2016В В· Navien CH-210 NG Condensing Gas Combination Boiler. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe? "Had great customer service after a snafu with the shipping address....still arrived on time, packaging was great, and product View online or download Navien CH-210 Installation Manual. Sign In. Manuals and User Guides for NAVIEN CH-210. We have 6 NAVIEN CH-210 manuals available for free PDF download: Service Manual, Installation Manual, User's Operation Manual, Owner's Operation Manual, Operation Manual . Navien CH-210 Service Manual (155 pages).

navien ch 210 service manual

  • Navien CH-210 water leak YouTube
  • Navien CH-240 Knocking and error code 16 Page 2

  • Additionally, when I'm repairing Navien combi boilers and encounter black pipe on heating systems (which is on 95% of the Navien repair calls,) it's a given the unit wasn't properly flushed out. IF YOU OWN A NAVIEN COMBI BOILER AND HAVE BLACK IRON PIPE WITHIN THE SYSTEM, YOU NEED TO TREAT YOUR SYSTEM WITH The Fernox system. The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

    Sep 12, 2016В В· How to perform annual maintenance on your Navien instantaneous water heater. Feb 29, 2012В В· Remote Control NR-10PU for Navien Combination Boiler/Water Heater.

    The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas … Navien CH-240-ASME NG Condensing Gas Combination Boiler. CH-210: CH-240, CH-240 ASME: Heat Capacity (Input) Min 17,000 BTU/hr. Max 150,000 BTU/hr: I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust

    Free appliance repair help, parts and troubleshooting advice for nonprofessionals Navien boiler troubleshooting If you have noticed any clear signs of a breakdown in your boiler, like lengthy water heating process, some part not working or unusual noise, take steps to repair it right away. The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

    Dec 30, 2013 · Need Help Tuning Navien CH-180 ASME Mod Con Combi. Discussion in 'Boiler Forum' started by jac04, Dec 12, a Navien CH-180 ASME modulating condensing combination boiler was installed to replace my original oil-fired boiler. They never checked & re-set the gas/air pressure settings per the manual - apparently the Navien Tech Line Apr 09, 2012 · I have a NAVIEN NR-210 Tankless Hot Water Heater (18 month I am having continued issues with the display going to 10 Degrees and the red light coming on.The unit then does not "fire" and the w … read more

    Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL Dec 30, 2013В В· Need Help Tuning Navien CH-180 ASME Mod Con Combi. Discussion in 'Boiler Forum' started by jac04, Dec 12, a Navien CH-180 ASME modulating condensing combination boiler was installed to replace my original oil-fired boiler. They never checked & re-set the gas/air pressure settings per the manual - apparently the Navien Tech Line

    Navien CH-240-ASME NG Condensing Gas Combination Boiler. CH-210: CH-240, CH-240 ASME: Heat Capacity (Input) Min 17,000 BTU/hr. Max 150,000 BTU/hr: I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

    Navien CH-240-ASME NG Condensing Gas Combination Boiler. CH-210: CH-240, CH-240 ASME: Heat Capacity (Input) Min 17,000 BTU/hr. Max 150,000 BTU/hr: I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL

    Leaking Navien CR-240 Heat Exchanger replace or repair

    navien ch 210 service manual

    Navien CH-210 water leak YouTube. Condensing Gas Specification Sheet Combination Boiler Optional accessories (see below) CH-180-ASME ˘ ˇ ˆ˘ ˙˝˛˚ CH-210-ASME ˆ ˘ ˇ˜ ˘ Navien America, Inc 20 Goodyear, Irvine, CA 92618 Ph: (949)420-0420 Fax: (949)420-0430 www.navienamerica.com Rev. 12/12 A B, Apr 09, 2012 · I have a NAVIEN NR-210 Tankless Hot Water Heater (18 month I am having continued issues with the display going to 10 Degrees and the red light coming on.The unit then does not "fire" and the w … read more.

    Navien Miscellaneous Parts

    Navien CH-210 water leak YouTube. Nov 16, 2017 · How to Flushing and descaling the heat exchangers on a Navien Combination boiler with vinegar. Clean condensate trap, clean water inlet filter, clean …, Sep 12, 2016 · How to perform annual maintenance on your Navien instantaneous water heater..

    Nov 16, 2017 · How to Flushing and descaling the heat exchangers on a Navien Combination boiler with vinegar. Clean condensate trap, clean water inlet filter, clean … Free appliance repair help, parts and troubleshooting advice for nonprofessionals Navien boiler troubleshooting If you have noticed any clear signs of a breakdown in your boiler, like lengthy water heating process, some part not working or unusual noise, take steps to repair it right away.

    May 07, 2016В В· Navien Ch-180 Water Heater review: boilers are JUNK. I had a Navien CH 180 Gas combination water heater/boiler system installed only six years ago. I have put in $3,000 into repairs- yes you read that right. Every repair tech that has been here has told... Jan 07, 2018В В· Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time.

    Apr 13, 2015В В· 1967 Shelby GT500 Barn Find and Appraisal That Buyer Uses To Pay Widow - Price Revealed - Duration: 22:15. Jerry Heasley Recommended for you Navien Nr-210 Service Manual Read/Download Navien NP-180 Service Manual 179 pages Navien nr-180(a), np-180(a), nr-210(a), np-210(a), nr-240(a), np-240(a) condensing water heater (89 pages). HVAC & R Service Tools 3" Diameter Furnace Concentric Vent Kit for Navien NPE, NR, CH & NCB Navien NPE-210A Condensing Tankless Water Heater. Manuals and

    Nov 16, 2017 · How to Flushing and descaling the heat exchangers on a Navien Combination boiler with vinegar. Clean condensate trap, clean water inlet filter, clean … Apr 09, 2012 · I have a NAVIEN NR-210 Tankless Hot Water Heater (18 month I am having continued issues with the display going to 10 Degrees and the red light coming on.The unit then does not "fire" and the w … read more

    Dec 30, 2013 · Need Help Tuning Navien CH-180 ASME Mod Con Combi. Discussion in 'Boiler Forum' started by jac04, Dec 12, a Navien CH-180 ASME modulating condensing combination boiler was installed to replace my original oil-fired boiler. They never checked & re-set the gas/air pressure settings per the manual - apparently the Navien Tech Line Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Manual De Sistema Ventilacion Comun Español (USA & Canada) Find the nearest Navien Service Specialist including installers and service …

    Jan 07, 2018В В· Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time. Free appliance repair help, parts and troubleshooting advice for nonprofessionals Navien boiler troubleshooting If you have noticed any clear signs of a breakdown in your boiler, like lengthy water heating process, some part not working or unusual noise, take steps to repair it right away.

    Navien Nr-210 Service Manual Read/Download Navien NP-180 Service Manual 179 pages Navien nr-180(a), np-180(a), nr-210(a), np-210(a), nr-240(a), np-240(a) condensing water heater (89 pages). HVAC & R Service Tools 3" Diameter Furnace Concentric Vent Kit for Navien NPE, NR, CH & NCB Navien NPE-210A Condensing Tankless Water Heater. Manuals and Condensing Gas Specification Sheet Combination Boiler Optional accessories (see below) CH-180-ASME ˘ ˇ ˆ˘ ˙˝˛˚ CH-210-ASME ˆ ˘ ˇ˜ ˘ Navien America, Inc 20 Goodyear, Irvine, CA 92618 Ph: (949)420-0420 Fax: (949)420-0430 www.navienamerica.com Rev. 12/12 A B

    Condensing Gas Specification Sheet Combination Boiler Optional accessories (see below) CH-180-ASME ˘ ˇ ˆ˘ ˙˝˛˚ CH-210-ASME ˆ ˘ ˇ˜ ˘ Navien America, Inc 20 Goodyear, Irvine, CA 92618 Ph: (949)420-0420 Fax: (949)420-0430 www.navienamerica.com Rev. 12/12 A B The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

    Navien CH-240-ASME NG Condensing Gas Combination Boiler. CH-210: CH-240, CH-240 ASME: Heat Capacity (Input) Min 17,000 BTU/hr. Max 150,000 BTU/hr: I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust Jan 07, 2018В В· Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time.

    Navien 20017210A O-Ring (Epdm 15.8 X 2.4T) Amazon.com

    navien ch 210 service manual

    NAVIEN CH-180 ASME INSTALLATION MANUAL Pdf Download.. Mar 09, 2016 · Navien CH-210 NG Condensing Gas Combination Boiler. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe? "Had great customer service after a snafu with the shipping address....still arrived on time, packaging was great, and product, Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Manual De Sistema Ventilacion Comun Español (USA & Canada) Find the nearest Navien Service Specialist including installers and service ….

    Navien 20017210A O-Ring (Epdm 15.8 X 2.4T) Amazon.com. View and Download Navien CH-180 ASME installation manual online. Condensing Gas Combination Boiler. CH-180 ASME Boiler pdf manual download. Also for: Ch-210 asme, Ch-240 asme., Jan 07, 2018В В· Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time..

    Navien Ch210 error code e30 Terry Love Plumbing

    navien ch 210 service manual

    Navien CH-240 Knocking and error code 16 Page 2. Navien Nr-210 Service Manual Read/Download Navien NP-180 Service Manual 179 pages Navien nr-180(a), np-180(a), nr-210(a), np-210(a), nr-240(a), np-240(a) condensing water heater (89 pages). HVAC & R Service Tools 3" Diameter Furnace Concentric Vent Kit for Navien NPE, NR, CH & NCB Navien NPE-210A Condensing Tankless Water Heater. Manuals and Feb 29, 2012В В· Remote Control NR-10PU for Navien Combination Boiler/Water Heater..

    navien ch 210 service manual


    Navien Nr-210 Service Manual Read/Download Navien NP-180 Service Manual 179 pages Navien nr-180(a), np-180(a), nr-210(a), np-210(a), nr-240(a), np-240(a) condensing water heater (89 pages). HVAC & R Service Tools 3" Diameter Furnace Concentric Vent Kit for Navien NPE, NR, CH & NCB Navien NPE-210A Condensing Tankless Water Heater. Manuals and Mar 09, 2016В В· Navien CH-210 NG Condensing Gas Combination Boiler. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe? "Had great customer service after a snafu with the shipping address....still arrived on time, packaging was great, and product

    Navien condensing tankless water heaters & boilers for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment. CH ASME Installation Manual CH ASME Installation Manual CH ASME Operation Manual CH ASME Operation Manual NaviClean Installation and Service Manual NaviClean The "T Love" is NOT a Navien water heater model name, part number nor term it's a name associated with an excellent plumbing information website by Terry Love. Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas …

    Jan 25, 2017В В· I read a service manual for the newer units and they gave instructions for removing the top of the burner and flushing the outside of the coils with a low pressure water hose. I guess I could do that with the CH but it isn't mentioned anywhere in any manuals. I know flushing the coil inside wouldn't do much but I had to give it a try anyway. Apr 13, 2015В В· 1967 Shelby GT500 Barn Find and Appraisal That Buyer Uses To Pay Widow - Price Revealed - Duration: 22:15. Jerry Heasley Recommended for you

    Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Manual De Sistema Ventilacion Comun Español (USA & Canada) Find the nearest Navien Service Specialist including installers and service … Jan 23, 2020 · Navien Boilers. Everything you need on Navien Boilers, including model details, industry rankings and customer reviews, all in one place. NHB NCB Combi CH-240. Find a Certified Heating & Cooling Professional In Your Area. Let us know what type of service you need and we can connect you with a certified local HVAC contractor. Full name

    Navien condensing tankless water heaters & boilers for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment. CH ASME Installation Manual CH ASME Installation Manual CH ASME Operation Manual CH ASME Operation Manual NaviClean Installation and Service Manual NaviClean Dec 30, 2013В В· Need Help Tuning Navien CH-180 ASME Mod Con Combi. Discussion in 'Boiler Forum' started by jac04, Dec 12, a Navien CH-180 ASME modulating condensing combination boiler was installed to replace my original oil-fired boiler. They never checked & re-set the gas/air pressure settings per the manual - apparently the Navien Tech Line

    Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL Jan 07, 2018В В· Leaking Navien CR-240 Heat Exchanger - replace or repair? Discussion in 'Tankless Water Heater Forum' started by Eagle11, Jan 6, 2018. Eagle11 New Member. Joined: Jan 6, 2018 Location: Atlanta, GA. Navien's seem to have improved in both reliability and design over time.

    Apr 13, 2015 · 1967 Shelby GT500 Barn Find and Appraisal That Buyer Uses To Pay Widow - Price Revealed - Duration: 22:15. Jerry Heasley Recommended for you Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Manual De Sistema Ventilacion Comun Español (USA & Canada) Find the nearest Navien Service Specialist including installers and service …

    Navien Flow Sensors detect water flow which in turn enables the unit to ignite and heat cold water within the heat exchanger. Once the water flow reaches app. 1/2 gallon per minute the water heater will sense a flow rate sufficient to ignite the natural gas or propane resulting in hot water. 1 - 10 of 10 items For CH PARTS MANUAL Navien CH-240-ASME NG Condensing Gas Combination Boiler. CH-210: CH-240, CH-240 ASME: Heat Capacity (Input) Min 17,000 BTU/hr. Max 150,000 BTU/hr: I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust