Weil-McLain GV 3, GV 4 User Manual

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GOLD GV

Water Boiler — Series 3 & 4

Venting Supplement

Z-Vent II

Special gas vent system vent and combustion air supplement

Z-Flex® , Inc. Z-Vent II AL29-4C® Stainless Steel Special Gas Vent System may be used in new installations of GV-3 through GV-6 boilers.

Hazard definitions

The following defined terms are used throughout these Instructions to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

Indicates presence of hazards that will cause severe personal injury, death or substantial property damage.

Indicates presence of hazards that can cause severe personal injury, death or substantial property damage.

Indicates presence of hazards that will or can cause minor personal injury or property damage.

Indicates special instructions on installation, operation or maintenance that are important but not related to personal injury or property damage.

To the installer:

This Venting Supplement must only be used by a qualified installer/service technician. Read these Instructions completely before beginning the installation. Failure to follow all instructions can cause severe personal injury, death or substantial property damage.

To install a new vent system follow instructions in:

This Venting Supplement.

GV Boilers Vent/Air Intake Termination Assembly Instructions, if using Weil-McLain Vent/Air Intake Termination Kit. — OR —

GV Water Boiler Series 3 & 4 Direct Vent Through-Roof or Through- Unused-Chimney Venting Supplement, if using Weil-McLain Through-Roof or Through-Unused-Chimney Termination Kit.

Z-Vent II manufacturer’s instructions supplied with vent material. For installations above 5,500 feet use only direct vent (ducted combustion

air) when sidewall venting. All of the vertical (through-roof or through- unused-chimney) methods in this Venting Supplement are acceptable and can result in severe personal injury, death or substantial property damage if ignored.

Part number 550-110-266/0601

GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement

Combustion air supply

Special note

Refer to GV Boiler Manual for sizing free area of combustion/ventilation air openings.

All boilers experience some condensation in section assembly during start-up. Unlike most conventional boilers, condensation is minimized in the GV Boiler by a built-in mixing system, maintaining boiler return water temperature above 130 0F, during steady state operation.

Flue gas condensate is slightly acidic. In most cases pH level is not harmful to vents or drains. When combustion air is contaminated by vapors from products and areas, listed in Table 1 below, condensate acidic levels increase. Higher acidic levels attack many materials, including stainless steel commonly used in high efficiency systems.

You may choose to use outside combustion air for any of the following reasons:

Installation is in an area containing contaminants listed in Table 1 below, which will induce acidic contamination.

You want to reduce infiltration into your home through openings around windows and doors.

Table 1 Corrosive contaminants

Products to avoid

Spray cans containing chloro/fluorocarbons

Permanent wave solutions

Chlorinated waxes/cleaners

Chlorine-based swimming pool chemicals

Calcium chloride used for thawing

Sodium chloride used for water softening

Refrigerant leaks

Paint or varnish removers

Hydrochloric acid/muriatic acid

Cements and glues

Antistatic fabric softeners used in clothes dryers

Chlorine-type bleaches, detergents, and cleaning solvents found in household laundry rooms

Adhesives used to fasten building products and other similar products

Areas likely to have contaminants

Dry cleaning/laundry areas and establishments

Swimming pools

Metal fabrication plants

Beauty shops

Refrigeration repair shops

Photo processing plants

Auto body shops

Plastic manufacturing plants

Furniture refinishing areas and establishments

New building construction

Remodeling areas

Garages with workshops

To prevent the potential of severe personal injury or death, check for areas and products listed above before installing boiler. If found:

remove products permanently — OR —

provide outside combustion air

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Part number 550-110-266/0601

Weil-McLain GV 3, GV 4 User Manual

GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement

Vent termination

Venting method definitions

Direct vent — Uses outside combustion air with combustion air connector piping sealed at all joints and seams. Also known as “sealed combustion”.

Non-Direct vent — Uses inside combustion air with no combustion air connector piping.

Properly locate vent termination

Follow instructions on this page when determining vent location to avoid possibility of severe personal injury, death or substantial property damage.

1.When using direct vent method — Refer to separate instructions packed with Weil-McLain direct vent termination kit and vent pipe manufacturer's instructions for additional locations.

2.For location of non-direct vent vertical termination, see vent pipe manufacturer's instructions.

3.Gases will form white plume in winter. Plume could obstruct window view.

4.Prevailing winds could cause freezing of condensate and water/ice buildup on building, plants or roof.

5.Locate or guard vent to prevent accidental contact by people or pets.

6.Do not terminate vent in window well, stairwell, alcove, courtyard, or other recessed areas.

7.Non-Direct vent installations only — Vent must

terminate more than 4 feet below or to side of all doors or windows.

8.Vent must terminate more than 1 foot above grade or anticipated snow line. In addition, vent termination must be at least 7 feet above public walkway and 3 feet above any forced air intake within 10 feet. Stay well away from trees, shrubs, and decorative items. Site conditions may dictate greater clearances. See Figure 1.

9.Vent must terminate at least 4 feet horizontally, and in no case above or below, unless a 4 foot horizontal distance is maintained, from electric meters, gas meters, regulators, relief valves, and other equipment.

10.Locate or guard vent to prevent condensate from damaging exterior finishes.

11.Do not extend exposed vent pipe outside of building. Condensate could freeze and block vent pipe.

12.Vent must terminate at least 6 feet away from adjacent walls.

13.Do not terminate vent closer than 5 feet below roof overhang.

14.Do not terminate vent above any door or window. Condensate can freeze, causing ice formations.

15.Do not use existing chimney as raceway if another appliance or fireplace is vented into or through chimney.

16.Do not connect:

Any other appliance to vent pipe.

Multiple boilers to a common vent pipe.

17.Do not wrap or insulate vent pipe and fittings.

18.Canadian installations — See B149.1 or B149.2 Installation Code.

19.

 

A gas vent extending through an exterior wall shall not

 

 

terminate adjacent to the wall or below building

 

 

 

 

extensions such as eaves, parapets, balconies or decks.

 

 

Failure to comply could result in severe personal injury,

 

 

death or substantial property damage.

Figure 1 Vent termination locations

Forced air intake

3 feet

If within 10 feet

1 foot

7 feet

26607

alkway W Public

1ft 1ft

1 ft

Snow

26608

Part number 550-110-266/0601

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