Lochinvar CG200, CG150 warranty Circulating Return Line Connection

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INSTALLATION DIAGRAMS-SIDE INLET/OUTLET USAGE

A listed temperature and pressure relief valve of adequate capacity is installed on the heater. The locations shown in the

installation diagrams on the following pages are typical. to freezing conditions. DO NOT REDUCE, BLOCK OR PLUG The discharge opening of the temperature and pressure relief THE DISCHARGE OPENING OF THE VALVE.

valve must be piped to an open drain and should not be subject

TWO TEMPERATURE - TWO HEATERS,

ONE PRE-HEATER/ONE - BOOSTER

HEATER

WITH OR WITHOUT BUILDING RECIRCULATION

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATUREAT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 20. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.

CIRCULATING RETURN LINE CONNECTION

-FROM FIXTURE LOOP, IF USED, CONNECT TO PRE-HEATER INLET.

-FROM BOOSTED TEMPERATURE LOOP, IF

USED CONNECT TO BOOSTER INLET.

†AVAILABLE FROM LOCHINVAR.

*PIPE RELIEF VALVE TO OPEN DRAIN.

INSTALL IN ACCORDANCE WITH LOCAL CODES.

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Contents Models CGN,L150 & CGN,L200 Foreword ROUGH-IN-DIMENSIONSRecovery Rating Capacities GPH AT Temperature Rise Shown Table of Contents Extended NON-USE Periods FeaturesHigh Altitude Installations Insulation BlanketsElectronic Ignition Control High Limit SwitchExhaust Inducer Blower Assembly Circulating PumpLocating the Heater Required AbilityUncrating LevelingVenting Confined SpaceWater Potable Heating Space Heating Multiple Heater ManifoldWater Line Connections Relief ValveGAS Pressure Regulator GAS PipingPurging Length Nominal Iron Pipe Sizes Inches FeetHeater Wiring Single Unit Wiring DiagramInstallation Diagrams GeneralVertical Storage Tank and Forced Circulation Horizontal Storage Tank and Forced CirculationPage Circulating Return Line Connection Heater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Operation Sequence of OperationFor Your Safety Read Before Operating What to do if YOU Smell GASCheck the Ignitor Assembly Preventive MaintenanceWater Temperature Control Ignitor AssemblyChecking the Input Remote Storage Tank Temperature ControlGAS Valves Venting SystemFlushing HOT Water OdorAnode ROD Inspection DrainingDeliming Solvents Tank Cleanout ProcedureSystem Diagnostics Ignition Module SystemElectrical Servicing ServiceReplacement Parts Sequence of Operation Flow Chart Ignitor afterRemedy Operational ChecklistComplaint Cause User Serviceman Limited Warranty Copyright 2011 Lochinvar, LLC, All rights reserved