Instructions / Assembly

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WHL-004 REV. 5.26.17
2. RECOMMENDED EXHAUST PIPE TRANSITIONS
Figure 15 – Recommended Exhaust Pipe Transitions
3. TWO PIPE VENT SYSTEM (DIRECT VENT)
DO NOT ATTEMPT to common vent 150 model water heaters. Doing so will result in property damage, severe personal injury, or
death.
Common Vented water heaters must be direct vented with an exhaust vent and intake air pipe vented to the outdoors. DO NOT power
vent Common Vented water heaters! Doing so will result in property damage, severe personal injury, or death.
The water heater can be direct vented without any modification using a 3 inch diameter pipe. The following diagrams represent some
typical direct venting configurations and are included to assist in designing the vent system. Possible configurations are not limited to
the following diagrams. See Table 14 for trunk line sizing when common venting multiple heaters.