P/N 475114 Rev. F 8/2020
MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide
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Outlet Air
Opening
Inlet Air
Opening
Chimney or Gas Vent
Vent Cap and
Riser Furnished
by Installer
Side
Wall Vent
Heater
Chimney or Gas Vent
Vent Cap and
Riser Furnished
by Installer
Side
Wall Vent
Outlet Air Opening
Inlet Air Opening
Figure 17.
Figure 18.
Outlet Air
Opening
Inlet Air
Opening
Chimney or Gas Vent
Vent Cap and
Riser Furnished
by Installer
Side
Wall Vent
Heater
Chimney or Gas Vent
Vent Cap and
Riser Furnished
by Installer
Side
Wall Vent
Outlet Air Opening
Inlet Air Opening
Figure 19.
0.3 m (1 ft) min.
1.2 m (4 ft) min.
1.2 m (4 ft) min.
1.2 m (4 ft) Min.
76 mm (3 in) minimum clearance if
r
horizontal distance to
e
xhaust opening is les
s
than 3 m (11 ft).
Forced Air
Inlet
Vent
Terminatio
n
0.3 m (1 ft) minimum
above snow o
r
finished grade
(which
ever is
higher)
At least 2 m (7 ft)
above
grade
adjacent
to public
walkways
Vent
Termination
Vent
Termination
Gas Meter
Max. 305 mm (12 in)
Min. 76 mm (3 in)
1.2 m
(4 ft)
min.
NOTE: After installation, installer must check for correct and safe operation of the heater.
WARNING
Fire Hazard.
Do not run the heater vent into a common vent with any other appliance. Do not run the Special Gas Vent into,
through, or within any active vent such as a factory built or masonry chimney.
Vent Termination – Horizontal (Continued)
Section 1. Installation