State GTS-110-NI - Manual (Page 12)

Installation
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Improper venting of this appliance can result in excessive levels of carbon
monoxide which can result in severe personal injury or death.
Improper installation can cause nausea or asphyxiation, severe injury or death from
carbon monoxide and flue gases poisoning. Improper installation will void product
warranty.
When installing the vent system, all applicable national and local codes must be
followed. If you install thimbles, fire stops or other protective devices and they
penetrate any combustible or noncombustible construction, be sure to follow all
applicable national and local codes.
VENTING INSTRUCTIONS
‐General‐
The water heater must be vented in accordance with the section “Venting of Equipment" of the latest
edition of the National Fuel Gas Code: ANSI Z223.1/NFPA 54 in the United States and/or Section 7 of the
CAN/CSA B149.1 Natural Gas and Propane Installation Code in Canada, as well as applicable local
building codes.
The manufacturer recommends the “T‐Vent” line manufactured by TAKAGI (Refer to “T‐Vent”
brochure for details). However, the following are also UL listed manufacturers: ProTech Systems Inc.
(FasNSeal), Flex‐L Inc., Z‐Flex Inc. (Z‐Vent III), Metal‐Fab Inc., and Heat‐Fab Inc. (Saf‐T Vent).
General rules for venting water heaters are:
 Place the water heater as close as possible to the vent terminator.
 The vent collar of the water heater must be fastened directly to an unobstructed vent pipe.
 Do not weld the vent pipe to the water heater’s vent collar.
 Do not cut the vent collar of the unit.
 The vent must be easily removable from the top of the water heater for normal service and
inspection of the unit.
 The water heater vent must not be connected to any other gas appliance or vent stack.
 Avoid using an oversized vent pipe or using extremely long runs of the pipe.
 For rooftop venting, a rain cap or other form of termination that prevents rain water from
entering into the water heater must be installed.
 Do not common vent or connect any vent from other appliances to the water heater vent.
General rules for vent terminations:
 Avoid locating the water heater vent terminator near any air intake devices. These fans can
pick up the exhaust flue products from the water heater and return them to the building.
This can create a health hazard.
 Locate the vent terminator so that it cannot be blocked by any debris, at any time. Most
codes require that the terminator be at least 12 inches above grade, but the installer may
determine if it should be higher depending on the job site condition and applicable codes.
 A proper sidewall terminator is recommended when the water heater is vented through a
sidewall.
 Regarding the clearances from the exhaust terminator to the air inlet or opening, refer to
the next few pages.
CAUTION
DANGER