Weil-McLain Series 2 manual 3a Venting general information, Venting chimney draft venting

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GOLD CGi Gas-Fired Water Boiler — Boiler Manual

3a Venting — general information

CGi venting methods — Chimney draft or Direct exhaust

Chimney draft venting

Chimney draft venting uses the natural draft provided by a vertical vent or chimney. Category I appliance (non- positive vent static pressure and vent gas temperature that avoids excessive condensate production in vent). See Section 3b. Chimney draft installations use:

1.Vent connector (single or doublewall) sized to eliminate positive pressure in vent system. Diameter increases immediately at boiler.

2.Doublewall metal vent (B-vent) or chimney with liner approved by the National Fuel Gas Code, ANSI Z223.1–latest edition, or in Canada B149.1 or B149.2 Installation Code.

Direct exhaust — vertical or sidewall

Direct exhaust venting uses inside combustion air with no combustion air connector piping. All CGi flue gas vents are pressurized, requiring careful sealing of all joints. Category III appliance (positive vent static pres- sure and vent gas temperature that avoids excessive condensate production in vent). See pages 15-19.

Direct exhaust installations use:

1.Vent pipe specified in this manual.

2.Vent termination through outside wall, roof or un- used chimney. Tight chimney areas will make vent joint construction very difficult.

3b

Table 3

Vent connector diameter

Figure 7

Chimnney

draft

venting

Venting — chimney draft venting

Inspect existing chimney before installing boiler. Failure to clean or replace perforated pipe or lining will cause severe personal injury or death.

Vent sizing given in Table 3 is only a general guideline. The vent connector and chimney must be designed, sized and constructed in compliance with all applicable codes. Failure to correctly size and install the vent system could result in severe personal injury, death or substantial property damage.

1.Use doublewall metal vent (B-vent) or chimney with liner as required by the National Fuel Gas Code, ANSI Z223.1–latest edition, or in Canada, B149.1 or B149.2 Installation Code.

2.To prevent downdrafts, chimney should extend at least 3 feet above the highest point where it passes through a roof and at least 2 feet higher than any portion of a building within a horizontal distance of 10 feet.

3.To vent with another appliance, see National Fuel Gas Code, ANSI Z223.1–latest edition or in Canada B149.2 or B149.2 Installation Code

4.Do not connect breeching to any portion of a mechanical draft system that can operate under positive pressure.

5.Maintain minimum 2”clearance from combustible materials to vent pipe.

6.Do not use chimney with an open fireplace.

7.Make horizontal runs as short as possible. Long runs can cause condensation.

8.When longer runs are used, support pipe with appropriate hangers.

9.To prevent blockage, do not vent into bottom of chimney.

10.Vent pipe must not go beyond inside wall of chimney.

11.Vent passing through floors or ceilings must be fire- stopped.

12.See Figure 7 and Table 3 to connect boiler to venting sys- tem.

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Part Number 550-110-710/0107

 

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Contents Gold CGi How it works Gold CGi Gas-Fired Induced-Draft Water Boiler Contents Please read before proceeding Before locating the boiler, check the following 1a Prepare boiler location codes & checklistInstallations must follow these codes 1b Prepare boiler location clearances Chimney or vent require- ments When removing boiler from an existing common vent system1c Prepare boiler location vent system 1d Prepare boiler location air contamination Products to avoidAir opening options 1e Prepare boiler location air openingsAir openings must be provided Two openings Air supply from inside the buildingSingle air opening option Exhaust fans and air moversMotorized air dampers Exception for large spacesPlace boiler/crate near position 2a Prepare boiler placement & setupOrifice replacement procedure Inspect orifices and burnersDrain and remove fittings 2b Prepare boiler pressure testHydrostatic pressure test Prepare boiler for testCGi venting methods Chimney draft or Direct exhaust 3a Venting general informationVenting chimney draft venting Chimney draft venting3c Venting Direct exhaust components Obtain vent system components3d Venting direct exhaust vent starter 3e Venting direct exhaust termination Vent termination minimum clearances3f Venting direct exhaust installation Direct exhaust vertical ventingUsing any termination other than one of those shown 4a Water piping general information Closed-type expansion tank 4b Water piping single-zone systemDiaphragm-type or bladder- type expansion tank Figure 4c Water piping multiple zones Piping multiple zonesZoning with circulators Valve adjustment 4d Piping low temperature systemsTemperature gauges Primary/secondary preferred bypass piping methodPrimary/secondary piping Valve adjustment BOILER-bypass piping methodBoiler-bypass piping Zoning with SYSTEM-bypass piping method 4e Water piping refrigeration system Prevent chilled water from entering boilerNatural Gas Connecting gas supply piping to boilerGas piping Propane GasWiring connections Field wiringElectrical installation must comply with ThermostatCheck for gas leaks Freeze protection when used7a Start-up preparation Determine if water treatment is neededInspect base insulation Fill the system with waterInspect system water piping Check system and boiler 7b Start-up operate boilerStart the boiler Check for 7c Start-up if boiler doesn’t startCheck burner flames Pilot burner flame FigureCheck-out procedure checklist Installation and service certificate9a Operation sequence 9b Operation wiring diagrams Schematic wiring diagramLadder wiring diagram 9c Operating instructions CGi-25 to CGi-6 9c Operating instructions CGi-25 to CGi-6 9c Operating instructions CGi-25 to CGi-8 10a Service and maintenance schedule Verify Proper Operation After Servicing10b Service and maintenance annual start-up Condensate drain system 10b Service & maintenance annual start-upBurners and base Inducer motorAir vents and air elimination Gas pipingCold fill and operating pressures Limit controls and cutoffsReview with owner Boiler relief valveBefore troubleshooting 11a Troubleshooting procedure11b Troubleshooting components Air pressure switchControl indicator lights Lockout modes Control indicator lightsTroubleshooting the control module Control moduleControl module connections 11c Troubleshooting control module lights Chart 1- Troubleshooting Power light statusChart 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 12a Replacement parts Section assembly Base Jacket Trim Controls12b Replacement parts section assembly Section assembly12c Replacement parts base Base assemblyDescription Weil-McLain Part number 12d Replacement parts jacket Jacket assemblyBoiler 12e Replacement parts trim Fittings shown are included with boiler12f Replacement parts controls Propane gas components13a Dimensions Dimensional drawing13b Ratings DOEHandling ceramic fiber and fiberglass materials Removal of Combustion Chamber Lining or Base Panels
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Series 2 specifications

The Weil-McLain Series 2 is a highly regarded boiler system known for its robustness, efficiency, and ease of installation. Designed primarily for residential and light commercial applications, the Series 2 boasts a variety of features that cater to diverse heating needs.

One of the standout characteristics of the Series 2 is its cast iron construction, which provides durability and longevity. Cast iron is well-suited for heat retention, allowing the boiler to operate more efficiently and deliver consistent warmth. The Series 2 is available in multi-fuel options, accommodating both natural gas and propane, making it versatile for various installations.

Efficiency is a key feature of the Weil-McLain Series 2, with annual fuel utilization efficiency (AFUE) ratings that meet or exceed industry standards. This ensures that homeowners can enjoy not only a comfortable living environment but also reduced energy bills. The Series 2 is designed to provide optimal performance, minimizing fuel consumption while maximizing heat output.

Another innovative aspect of the Series 2 is its user-friendly control system. Equipped with advanced controls, the boiler allows for precise temperature management and can easily be integrated with existing heating systems. This adaptability is crucial for ensuring that the boiler matches the specific heating demands of any space, increasing overall comfort levels.

Installation is straightforward, thanks to the boiler's thoughtful design. The Series 2 features a compact footprint, allowing for flexible placement in various settings. Additionally, Weil-McLain provides comprehensive documentation and customer support, making it easier for technicians to install and maintain the system.

The Series 2 also includes features aimed at ease of maintenance. Its clean-out ports facilitate quick access for servicing, ensuring that the boiler remains in peak operating condition throughout its lifespan. Weil-McLain’s commitment to quality means users can expect reliable performance year after year.

Overall, the Weil-McLain Series 2 stands out as an excellent choice for those seeking a dependable, efficient, and straightforward heating solution. Its combination of durable construction, high efficiency, and user-centric design makes it a leading option in the boiler market, appealing to both homeowners and professionals alike. Whether for a new installation or a replacement, the Series 2 is poised to deliver exceptional heating performance.
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