Pentair MT125 - Vent Installation (Indoor Installation or Outdoor Shelter); Vertical Venting (Maximum Elbows)

MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide 460906 Rev. D 8/2020
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Flue Collar
4" x 8" Metal
Flue Collar
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Vent Pipe
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Figure 17
VERTICAL VENTING
(See Figures 17, 18 and 19)
Vent the heater vertically in a system in accordance with AS/NZS 5263.1.12:2019 codes and local codes. Double-
wall vent connector is recommended; however single-wall pipe is allowed in some circumstances. Consult your local
code ofcial for detailed information. Donotuse a draft hood with this heater.
To connect a double wall metal gas vent to the heater, order the appropriate Metal Flue Collar from the chart below:
See Table 6 to determine allowable vent sizes for your heater.
1.STEP1:SeeTable4(page23),todetermineallowableventsizesfortheheater.
NOTE *: Vent must be at least 2.4 m (8 ft) away from nearest vertical surface. Vents extending 1.5
m (5 ft) or more above the roof must be braced or guyed. Consult your local code officials for
detailed information.
VENT INSTALLATION – INDOOR INSTALLATION OR OUTDOOR SHELTER
Flueing must be in accordance with AS/NZS 5263.1.12:2019
and local codes.
Always vent the heater to the outdoors, see Note* below. Vent it vertically using double wall vent connector pipe.
Locate the heater so as to minimize the length of horizontal venting and the number of vent elbows required. Horizontal
vent runs must slope to allow exhaust condensate to drain and it is recommended to have a condensate drain as described
in the venting installation instructions.
Metal Flue Collar Part No.
100 mm x 150 mm (4” x 6”) SF43-11-06
100 mm x 200 mm (4” x 8”) SF43-11-08
Section 1. Installation Instructions
Table 3. Metal Flue Collar Part Numbers