Exhaust Vent (Stainless Steel Vent); Dip Switch Settings For Vent Length (Stainless Steel Vent) - American Water Heater 240HX3 Installation Manual And Owner's Manual

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Table Of Contents

Table of Contents

This is a Category IV appliance and must be vented accordingly. The vent system must be sealed airtight. All

seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum

adhesive tape having a minimum temperature rating of 160 °F (71 °C). For best results, a vent system should be

as short and straight as possible.

• The Indoor models are a Category IV appliance and must be vented accordingly with any 4ʺ vent approved

for use with Category III/IV or Special BH type gas vent.

• The manufacturer recommends the NovaVent® or Z-Vent® venting manufactured by Z-Flex® U.S. and are

listed to UL 1738.

• Follow the vent pipe manufacturer's instructions when installing the vent pipe.

• The maximum length of exhaust vent piping must not exceed 100 ft (30.5 m) (deducting 5 ft (1.5 m) for

each elbow used in the venting system). Do not use more than 5 elbows.

• When the horizontal vent run exceeds 5 ft (1.5 m), support the vent run at 3 ft (0.9 m) intervals with over-

head hangers.

Diameter

4 in

*For each elbow added, deduct 5 ft. (1.5 m) from max. vent length.

No. of Elbows Max. Vertical or Horizontal Vent Length No. of Elbows Max. Vertical or Horizontal Vent Length

Excludes vent terminators, termination elbows, or rain caps.

• Adjust the appropriate DIP switches according to model and vent length as shown

below. DO NOT adjust the other DIP switches.

• Turn off the power supply to the water heater before changing the DIP switch settings.

WARNING

• Failure to observe these warnings could lead to carbon monoxide poisoning or death.

Horizontal Installation

Hanger

For details of the optional items, refer to the Installation manual for each optional item.

X3™ CARTRIDGE NOT SHOWN.