Venting and combustion air, Vent system | Weil-McLain CGS-4E

GOLD CGs-4E Gas-Fired Water Boiler — Boiler Manual

4 Venting and combustion air

Install vent piping and air piping per appropriate Venting Supplement included in boiler envelope assembly.

Refer to Venting Supplements and to manual Section 1 regarding require- ments for:

•vent system

•combustion air openings

•combustion air quality

CGs-4E Boiler must be vented and supplied with

combustion and ventilation air as described in Weil-McLain CGs Venting Supplements packed in envelope assembly with boiler. Also see Boiler Manual pages 9 through 11. Failure to do so will cause severe personal injury or death.

Read and follow the special instructions for the Com- monwealth of Massachusetts, located on page 36 of this manual.

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Part number 550-110-282/1108

Image 24

Weil-McLain CGS-4E manual Venting and combustion air, Vent system, Combustion air openings Combustion air quality

Contents

GOLDCGs-4E How it works Gold CGs-4EGas-Fired Induced-Draft Water Boiler Contents Installer Please read before proceedingUser 1a Prepare boiler location codes & checklist Installations must follow these codesBefore locating the boiler, check the following 1b Prepare boiler location clearances When removing boiler from an existing common vent system 1c Prepare boiler location vent systemCGs-4E special vent system Vent system 1d Prepare boiler location contamination Products to avoidAreas likely to have contaminants 1e Prepare boiler location air openings Combustion air requirementsSpecial considerations Sizing air openings Sizing air openings for CGs-4E installations 2a Prepare boiler placement & setup Orifice replacement procedurePlace boiler/crate near position Inspect orifices and burners 2b Prepare boiler pressure test Hydrostatic pressure testDrain and remove fittings Prepare boiler for test 3a Water piping general information Install an automatic air vent in air vent tapping as shown 3b Water piping single-zone system 3c Water piping multiple zones Piping multiple zones Boiler isolation balancing valves Flow/check valve System or zone circulator Zone valve Drain valveRelief valve Fill valve Temperature gauges Valve adjustment Figures 8 and 9 only3d Piping low temp systems Primary/secondary preferred bypass piping method Blend temperature gauge Boiler isolation balancing valves Valve adjustment BOILER-bypass piping method Figures 8 SYSTEM-bypass piping method 3e Water piping refrigeration systems Prevent chilled water from enteringBoiler Venting and combustion air Vent systemCombustion air openings Combustion air quality Connecting gas supply piping to boiler Gas pipingNatural Gas Propane Gas Field wiring Electrical installation must comply withWiring connections Thermostat Freeze protection when used 7a Start-up preparationDetermine if water treatment is needed Check for gas leaks 7b Start-up operate boiler Inspect system water piping Inspect base insulationFinal check before starting boiler Start the boiler Check burner flames Pilot burner flame FigureMain burner flame Figure If none of the above corrects the problem, refer to 7c Start-up if boiler doesn’t startCheck for Gas not turned on at meter or boiler? Check-out procedure checklist Installation and service certificate 9a Operation sequence Sequence returns to stepBoiler is now in the off cycle Operation sequence 9b Operation wiring diagrams Wiring diagram 9c Operating instructions CGs-4E Addendum Instruction for Commonwealth of Massachusetts CMR 5.082a 1 throughExemptions The following equipment is exempt from CMR 5.082a1 through 10a Service and maintenance schedule 10b Service & maintenance annual start-up With boiler power off, place a few drops of S.A.E Burners, base and inlet air boxCondensate drain system Inducer motor 10b Service & maint. annual start-up Boiler relief valve Relief valve, typical Clean between sections with wire flue brush Review with ownerShut down boiler Place newspapers in base of boiler to collect soot 11a Troubleshooting procedure Before troubleshootingCheck the following Can result 11b Troubleshooting air pressure switch Air pressure switchCheck pressure switch setting Troubleshooting air pressure reading 11c Troubleshooting control module Control indicator lights Lockout modesControl indicator lights NON-LOCKOUT modes Troubleshooting the control module Control module connections 11d Troubleshooting control module lights Chart 1 Troubleshooting Power light status Chart 2 Tstat Circ & Power lights flashing Chart 3 Press Switch & Power lights flashing Chart 4 Flame & Power lights flashing Does blower motor operate? Item 8 , Verify Sequence of operation, , 12a Replacement parts Section assembly Base Jacket Trim ControlsWeil-McLain part numbers are found in Weil-McLain Boilers 12b Replacement parts section assembly Weil-McLain part number 12c Replacement parts base Base assembly Description Weil-McLain Part number 12d Replacement parts jacket Jacket assembly Boiler 12e Replacement parts trim Fittings shown are factory-installed on boiler 12f Replacement parts controls Propane gas components 13a Dimensions Dimensional drawing 13b Ratings Tested for 50 psi working pressure Handling ceramic fiber and fiberglass materials This type of respirator is based onEye Irrigate immediately Breathing Fresh air