Weil-McLain WM97+155 Handbuch

This manual must only be used by a qualified heating installer/service technician. Read all instructions, includ-ing this manual and all other inform

CWH companion water heater — Product ManualFigure 7 Time lag to obtain hot water at fixture for branch lengths of 10 and 25 feet (ASPE Domestic Water

CWH companion water heater — Product ManualRecirculation (if used) (continued)3. Size the circulator and piping based on the tempera-ture drop allowe

CWH companion water heater — Product ManualCONNECTIONS TO BOILER AND SYSTEM The CWH can be placed with its DHW connec-tions on the left side or on th

CWH companion water heater — Product ManualBoiler/CWH piping — 70 or 110 / Right-side mixing valve (cont.)Figure 10 Typical piping for WM97+70 or 110

CWH companion water heater — Product ManualBoiler/CWH piping — 70 or 110 / Left-side mixing valveCONNECTIONS TO BOILER AND SYSTEM The CWH can be plac

CWH companion water heater — Product ManualBoiler/CWH piping — 70 or 110 / Left-side mixing valve (cont.)Figure 11 Typical piping for WM97+70 or 110

CWH companion water heater — Product ManualBoiler/CWH piping — 155 / Right-side mixing valveCONNECTIONS TO BOILER AND SYSTEM The CWH can be placed wi

CWH companion water heater — Product ManualBoiler/CWH piping — 155 / Right-side mixing valve (cont.)Figure 12 Typical piping for WM97+155 — CWH insta

CWH companion water heater — Product ManualBoiler/CWH piping — 155 / Left-side mixing valveCONNECTIONS TO BOILER AND SYSTEM The CWH can be placed wit

CWH companion water heater — Product ManualBoiler/CWH piping — 155 / Left-side mixing valve (cont.)Figure 13 Typical piping for WM97+155 — CWH instal

CWH companion water heater — Product ManualContentsWM97+ Boiler with Companion Water Heater (CWH) 3WM97+ Boiler . . . . . . . . . . . . . . . . . . .

CWH companion water heater — Product ManualWiring Electrical shock hazard — Can cause severe personal injury, death or substantial property damage. D

CWH companion water heater — Product ManualWater heater filling and start-up The installation and water chemistry must meet the requirements below. Fa

CWH companion water heater — Product ManualCWH Performance Mode quick set-up See page 41 for performance ratings at HIGH PERFORMANCE, NORMAL and EC

CWH companion water heater — Product ManualWater heater maintenance Boiler water — read and comply with all requirements under “Boiler water restrict

CWH companion water heater — Product ManualWM97+ Control settings — AdvancedFigure 19 WM97+ control menu access — accessing contractor menus — press

CWH companion water heater — Product ManualWM97+ Control settings — Advanced (continued)DHW SETTINGS1. If a CWH is used, the settings for control ope

CWH companion water heater — Product ManualWM97+ Control settings — Advanced (continued)Figure 20 Contractor DHW SETTINGS menus (see Figure 21, page

CWH companion water heater — Product ManualWM97+ Control settings — Advanced (continued)Figure 21 Default DHW Performance Mode Settings menus (see

CWH companion water heater — Product ManualFigure 22 Contractor ADVANCED DHW SETTINGS menus (see Figure 21, page 27 for setting values and descriptio

CWH companion water heater — Product ManualTroubleshootingPreparation for troubleshootingDocuments needed WM97+ Boiler manual Mixing valve instructi

CWH companion water heater — Product ManualWM97+ Boiler with Companion Water Heater (CWH)WM97+Boiler(Model 70/110 shown)(Shown with typical external p

CWH companion water heater — Product ManualTroubleshooting (continued)Insufficient hot water1 Undersized water heater?2 High-flow shower heads?3 Boil

CWH companion water heater — Product ManualTroubleshooting (continued)1 Undersized water heater? • There are many methods of sizing various applicat

CWH companion water heater — Product ManualTroubleshooting (continued)5 Check for air in the system • An air-bound water heater or boiler will not c

CWH companion water heater — Product ManualTroubleshooting (continued)Excessive domestic water temperature1 Adjust WM97+ control settings and check o

CWH companion water heater — Product ManualTroubleshooting (continued)Boiler relief valve lifting or weeping1 Undersized expansion tank? • Insufficie

CWH companion water heater — Product ManualTroubleshooting (continued)CWH Temperature/pressure relief valve lifting or weeping1 Undersized or missing

CWH companion water heater — Product ManualTroubleshooting (continued)Water on the floor near the tank1 Check for leaks from sources other than the wa

CWH companion water heater — Product ManualWater quality problems1 Water smells like “rotten eggs.” • The most common cause of water to smell like “

CWH companion water heater — Product Manual• This is similar to the reaction that occurs as air bubbles form on the walls of a pan shortly before the

CWH companion water heater — Product ManualReplacement partsFigure 24 Water heater replacement partsItemDescriptionW-M Part Number100 Tank 635-900-05

CWH companion water heater — Product ManualPlease read before proceeding Failure to adhere to the guidelines on this page can result in severe person

CWH companion water heater — Product ManualDetermine required temperature riseDetermine domestic water inlet water temperature — TIT1 is the groundwat

CWH companion water heater — Product ManualRatingsBoiler ModelCWH Capacity (GPM) @ 70°F Temp Rise(For DHW entering temperature of 45°F — capacities w

CWH companion water heater — Product ManualWater HeaterModelAHRI certified ratings180°F boiler water entering | 58°F to 135°F domestic waterPotable W

CWH companion water heater — Product ManualDimensionsFigure 25 Dimensions — CWH Companion Water Heater, right-side mixing valve orientation — All dim

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CWH companion water heater — Product ManualPre-installation The 18-inch mixing valve side clearance below is MANDATORY. The 1½” clearance on the oppo

CWH companion water heater — Product ManualPre-installation (continued) Hot Water Can Scald!• Water heated to temperature for clothes washing, dish w

CWH companion water heater — Product Manual DANGERMixing valve must be installedFollow all instructions in this manual and in the mix-ing valve manuf

CWH companion water heater — Product ManualFigure 6 DHW piping (shown with WM97+155, right-side piping, with Honeywell AMX302TLF mixing valve assembl

CWH companion water heater — Product ManualDomestic water piping (continued)LEGEND for Figure 6, page 8 Domestic water supplied to fixtures that could