Is the room fairly small where your 3" exhaust tankless water heater is to be installed? Does the room lack sufficient supply of fresh air? Then you must use a vent kit like this one that brings fresh air into the room or tankless unit.
This kit is ideal for the Marey GA14CSALP (propane) and GA14CSANG (natural gas) heaters that have 3" diameter exhaust venting, and 3" diameter fresh air intake pipe.
 Components
qty. two 3" diameter 1.5' length pipe
qty. one 3" diameter 90 degree elbow
qty. one 3" diameter wall thimble
qty. one 3" diameter termination hood
qty. one 3" diameter fresh air intake hood
qty. one 3" diameter 5' length combustion air duct with clamps (aluminum flex duct pipe)
Your installation may require additional pieces. Please contact us for assistance, or browse the Single Wall Venting catagory here on GadgetsGo.com.
Suggested additional venting pieces:
→ Kit does not include the required 3" diameter Universal Appliance Adapter. Available for purchase separately here.
→ Kit does not include a condensate drain pipe which may be required depending on your water heater manual guidelines and building code.
• This is a 3-in-1 part (UAA, backflow preventer, condensate drain).
• This piece has only the condensate drain which connects to the UAA.
Specs
• Vent material: AL29-4C stainless steel Made in USA
• Certification: Tested to meet or exceed Underwriters Laboratories (UL) spec UL1738 and ULS636
• Approval: Cat II, III, IV venting
• Limited Lifetime Warranty
Downloads
Z-Vent SVE Series IV Installation and Maintenance Instructions, 3" to 24", Single & Double Wall
Z-Vent Dimensional Specifications | 
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