Weil-McLain CGS-4E manual Boiler isolation balancing valves, Blend temperature gauge

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

3d Piping — low temp systems (continued)

Figure 8	Primary/secondary piping	Figure 9	Primary/secondary piping
	Zoning with circulators		Zoning with zone valves

1Boiler isolation (balancing) valves

2Flow/check valve

3System or zone circulator

4System temperature gauges

5Zone valve

6Drain valve

7System temperature valves (see instruc- tions to the left for adjusting valves)

8Blend temperature gauge

9Relief valve

10Automatic air vent (with diaphragm-type expansion tank), or connect to tank fitting (closed-type expansion tank). DO NOT use an automatic air vent when using closed-type expansion tank. It would allow air to leave the system, causing waterlog- ging of the expansion tank.

11Fill valve

12Diaphragm-type or bladder-type expansion tank, if used (For closed-type expansion tank, pipe from top of air separator to tank fitting as in Figure 5, page 15.)

13Air separator and automatic vent, if used (Note that the fill valve must always be connected to the expansion tank, regardless of location of expansion tank, circulator or air separator.)

Part number 550-110-282/1108

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Contents GOLDCGs-4E How it works Gold CGs-4EGas-Fired Induced-Draft Water Boiler Contents Please read before proceeding InstallerUser Installations must follow these codes 1a Prepare boiler location codes & checklistBefore locating the boiler, check the following 1b Prepare boiler location clearances Vent system When removing boiler from an existing common vent system1c Prepare boiler location vent system CGs-4E special vent systemProducts to avoid 1d Prepare boiler location contaminationAreas likely to have contaminants Sizing air openings 1e Prepare boiler location air openingsCombustion air requirements Special considerationsSizing air openings for CGs-4E installations Inspect orifices and burners 2a Prepare boiler placement & setupOrifice replacement procedure Place boiler/crate near positionPrepare boiler for test 2b Prepare boiler pressure testHydrostatic pressure test Drain and remove fittings3a Water piping general information 3b Water piping single-zone system Install an automatic air vent in air vent tapping as shownPiping multiple zones 3c Water piping multiple zonesFill valve Boiler isolation balancing valves Flow/check valveSystem or zone circulator Zone valve Drain valve Relief valvePrimary/secondary preferred bypass piping method Temperature gaugesValve adjustment Figures 8 and 9 only 3d Piping low temp systemsBoiler isolation balancing valves Blend temperature gaugeBOILER-bypass piping method Valve adjustmentFigures 8 SYSTEM-bypass piping method Prevent chilled water from entering 3e Water piping refrigeration systemsBoiler Vent system Venting and combustion airCombustion air openings Combustion air quality Propane Gas Connecting gas supply piping to boilerGas piping Natural GasThermostat Field wiringElectrical installation must comply with Wiring connectionsCheck for gas leaks Freeze protection when used7a Start-up preparation Determine if water treatment is neededStart the boiler 7b Start-up operate boilerInspect system water piping Inspect base insulation Final check before starting boilerPilot burner flame Figure Check burner flamesMain burner flame Figure Gas not turned on at meter or boiler? If none of the above corrects the problem, refer to7c Start-up if boiler doesn’t start Check forInstallation and service certificate Check-out procedure checklistSequence returns to step 9a Operation sequenceBoiler is now in the off cycle Operation sequence Wiring diagram 9b Operation wiring diagrams9c Operating instructions CGs-4E CMR 5.082a1 through Addendum Instruction for Commonwealth of MassachusettsCMR 5.082a 1 through Exemptions The following equipment is exempt from10a Service and maintenance schedule 10b Service & maintenance annual start-up Inducer motor With boiler power off, place a few drops of S.A.EBurners, base and inlet air box Condensate drain system10b Service & maint. annual start-up Relief valve, typical Boiler relief valvePlace newspapers in base of boiler to collect soot Clean between sections with wire flue brushReview with owner Shut down boilerCan result 11a Troubleshooting procedureBefore troubleshooting Check the followingTroubleshooting air pressure reading 11b Troubleshooting air pressure switchAir pressure switch Check pressure switch settingTroubleshooting the control module 11c Troubleshooting control moduleControl indicator lights Lockout modes Control indicator lights NON-LOCKOUT modesControl module connections Chart 1 Troubleshooting Power light status 11d Troubleshooting control module lightsChart 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, , Section assembly Base Jacket Trim Controls 12a Replacement partsWeil-McLain part numbers are found in Weil-McLain Boilers Weil-McLain part number 12b Replacement parts section assemblyBase assembly 12c Replacement parts baseDescription Weil-McLain Part number Jacket assembly 12d Replacement parts jacketBoiler Fittings shown are factory-installed on boiler 12e Replacement parts trimPropane gas components 12f Replacement parts controlsDimensional drawing 13a DimensionsTested for 50 psi working pressure 13b RatingsThis type of respirator is based on Handling ceramic fiber and fiberglass materialsEye Irrigate immediately Breathing Fresh air