Navien CH-180 Service Manual
Also see for CH-180: Owner's operation manualUser's operation manualInstallation manualOperation manualInstallation manual
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Contents
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364.6.4. High Limit Switch or Exhaust Limit SwitchNavien Part No.FunctionCheck PointBH1401022ABH1401027A BFailure EventEffectsError Code E016, E030DiagnosticColor /Number of wires1. Overheating preventing switch.2. Due to the high temperature, it will automatically trip and automaticallyreset.3. Detects excessively high water temperature(more than 197.6 ı) in heat exchanger. (BH1401022A)4. Detects excessively high flue gas temperature(more than 149 ı) in exhaust duct. (BH1401027A)1. Unable to detect excessively high water temperature if switch fails.2. Unable to detect excessively high flue gas temperature if switch fails.1. Visual inspection: Connection and/or breakage of wires.2. Voltage check: Check range of voltage shown below.1. Yellow – Yellow : DC 4 ~ 6 V2. Red – Red : DC 4 ~ 6 V1. Unable to shut down the boiler if the water temperature from the heatexchanger exceeds 197.6 ı(92 ç).2. Unable to shut down the boiler if the flue gas temperature from theexaust duct exceeds 149 ı (65 ç).Gڄکڠګڪڃڡڡڪ ڄڠڮڪڧڞڃکڪڄۉۍېۏۀڭٻھۄۏڼۈۊۏېڜڃڄڏڐڑڃێڼڢٻۀېۇڡڄۉۍېۏۀڭٻھۄۏڼۈۊۏېڜڃڄڏڍڔڃۍۀۏڼڲඑڍډڔڎڔڏڌඑڍډڔڎڑډڔڒڌڄڏڋڏڃඑڍډڔڎڏڋڌڄڏڒڒڃඑڍډڔڎڑډڋڒڌ©Navien America Inc. 2010 CH series service Manual Version 1.0 |
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