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Installation instructions
11
Maximum exhaust vent and combustion air inlet
lengths
Fig. 9 Maximum vent and combustion air lengths
Note: reduce 2.5 ft for each 90° elbow used after the
first one, reduce 1.25 ft for each 45° elbow, see table 2,
page 10.
Refer to chapter 3.3.2 for condensate drain
requirements.
Vent Safety System
The GWH 715 ES will shut down if inadequate exhaust
venting is detected or a lack of combustion air is
provided to the unit; see troubleshooting section on
page 39. See error code to confirm error, correct the
problem and then reset the heater before operating.
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