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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 haza
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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 0 temperature above 130 F, during steady state operation. Flue gas condensate is slightly acidic. In most case
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GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Vent termination terminate more than 4 feet below or to side of all doors or windows. Venting method definitions 8. Vent must terminate more than 1 foot above grade or anticipated snow Direct vent — Uses outside combustion air with line. In addition, vent termination must be at least 7 feet above public combustion air connector piping sealed at all joints and walkway and 3 feet above any forced air intake within 10 feet. Stay well seams. Also k
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GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Installation 4. If installing with direct vent method, use same maximum run length Pre-installation planning and number of elbows from step 2. Vent and combustion air connector 1. Follow national, state, local or provincial codes or piping configurations must match. Use suitable 3" material for regulations when venting GV boiler. combustion air connector piping, such as: 2. Choose vent method from those shown on page 5. Dryer vent 3. Select v
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Slope Slope GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Installation continued For altitudes more than 5,500 feet above sea level — Do not use non-direct vent through sidewall methods as shown in Figures 4 and 6 below. Can cause severe personal injury, death or substantial property damage if ignored. Select vent method Figure 3 GV direct vent through sidewall Figure 4 GV non-direct vent through sidewall (using Weil- (using Weil-McLain Vent/Air Intake Termination Kit) McLain Vent/Air Inta
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GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Installation — assembly Connect vent starter tee to boiler Follow the instructions in the GV Boiler Manual to connect the vent starter tee to the boiler. Construct vent and optional combustion air run Follow vent pipe manufacturer's instructions for sealing the vent. Vent and combustion air connector piping must be sealed gas-tight to prevent possibility of flue gas spillage and carbon monoxide emissions, resulting in severe personal injury or
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GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Installation — assembly continued Figure 8 Sidewall termination installation (non-direct venting) ¼" to ¾" between stop on termination and metal plate Spacers (2) (to support and center vent in sleeve) Pipe section 4" galvanized sleeve (through 4¹⁄₈" hole for combustible wall) Metal plate Metal plate Spacers (2) (to support and center vent in sleeve) Pipe section Sealant Sealant 26609 Termination coupling Figure 9 Non-direct vent through sidewa
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GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement Installation — assembly continued Finish the vent installation Figure 11 Installation of condensate tubing Installing condensate tubing 1. See Figure 11 to install condensate tubing (provided by others). Use condensate pump if floor drain is Z-Vent II higher than condensate drain on boiler. vent starter tee If required: use a low-profile pump — OR — set boiler on foundation (see GV Boiler Manual) to allow gravity flow to discharge. 2. Size
