Figures 8 | Weil-McLain CGS-4E instruction

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

3d Piping — low temp systems (continued)

Figure 10 Boiler-bypass piping	Figure 11 Boiler-bypass piping
Zoning with circulators	Zoning with zone valves
Alternative to primary/secondary piping	(Alternative to primary/secondary piping
Figures 8 and 9)	Figures 8 and 9)

1Boiler isolation (balancing) valves

2Flow/check valve

3System or zone circulator

4System temperature gauges

5Zone valve

6Drain valve

7System temperature valves (see instructions to the left for adjusting valves)

8Blend temperature gauge

9Relief valve

10Automatic air vent (with diaphragm-type expan- sion 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 wa- terlogging 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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Weil-McLain CGS-4E manual Figures 8

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 1c Prepare boiler location vent system When removing boiler from an existing common vent systemCGs-4E special vent system Vent system 1d Prepare boiler location contamination Products to avoidAreas likely to have contaminants Combustion air requirements 1e Prepare boiler location air openingsSpecial considerations Sizing air openings Sizing air openings for CGs-4E installations Orifice replacement procedure 2a Prepare boiler placement & setupPlace boiler/crate near position Inspect orifices and burners Hydrostatic pressure test 2b Prepare boiler pressure testDrain and remove fittings Prepare boiler for test 3a Water piping general information 3b Water piping single-zone system Install an automatic air vent in air vent tapping as shown Piping multiple zones 3c Water piping multiple zones System or zone circulator Zone valve Drain valve Boiler isolation balancing valves Flow/check valveRelief valve Fill valve Valve adjustment Figures 8 and 9 only Temperature gauges3d Piping low temp systems Primary/secondary preferred bypass piping method Boiler isolation balancing valves Blend temperature gauge BOILER-bypass piping method Valve adjustment 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 Gas piping Connecting gas supply piping to boilerNatural Gas Propane Gas Electrical installation must comply with Field wiringWiring connections Thermostat 7a Start-up preparation Freeze protection when usedDetermine if water treatment is needed Check for gas leaks Inspect system water piping Inspect base insulation 7b Start-up operate boilerFinal check before starting boiler Start the boiler Check burner flames Pilot burner flame FigureMain burner flame Figure 7c Start-up if boiler doesn’t start If none of the above corrects the problem, refer toCheck for Gas not turned on at meter or boiler? Installation and service certificate Check-out procedure checklist 9a Operation sequence Sequence returns to stepBoiler is now in the off cycle Operation sequence Wiring diagram 9b Operation wiring diagrams 9c Operating instructions CGs-4E CMR 5.082a 1 through Addendum Instruction for Commonwealth of MassachusettsExemptions The following equipment is exempt from CMR 5.082a1 through 10a Service and maintenance schedule 10b Service & maintenance annual start-up Burners, base and inlet air box With boiler power off, place a few drops of S.A.ECondensate drain system Inducer motor 10b Service & maint. annual start-up Relief valve, typical Boiler relief valve Review with owner Clean between sections with wire flue brushShut down boiler Place newspapers in base of boiler to collect soot Before troubleshooting 11a Troubleshooting procedureCheck the following Can result Air pressure switch 11b Troubleshooting air pressure switchCheck pressure switch setting Troubleshooting air pressure reading Control indicator lights Lockout modes 11c Troubleshooting control moduleControl indicator lights NON-LOCKOUT modes Troubleshooting the control module Control module connections Chart 1 Troubleshooting Power light status 11d Troubleshooting control module lights 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 Weil-McLain part number 12b Replacement parts section assembly Base assembly 12c Replacement parts base Description Weil-McLain Part number Jacket assembly 12d Replacement parts jacket Boiler Fittings shown are factory-installed on boiler 12e Replacement parts trim Propane gas components 12f Replacement parts controls Dimensional drawing 13a Dimensions Tested for 50 psi working pressure 13b Ratings Handling ceramic fiber and fiberglass materials This type of respirator is based onEye Irrigate immediately Breathing Fresh air