Pentair Pool Products MiniMax NT Series Service Manual page 15

Air Requirements (Indoor)
INDOOR INSTALLATION (USA ONLY)
OUTDOOR SHELTER INSTALLATION (CANADA)
See below for Vent Adaptors
All products of combustion and vent gases must be completely
removed to the outside atmosphere through a vent pipe which is
connected to the stack adaptor. A vent pipe extension of the same
size must be connected to the vent adaptor and extended at least
2 feet higher than highest point of the roof within a 10 foot
horizontal radius, and at least 3 feet higher than the point at which
it passes through the roof, or as permitted by local code; see
Figures 10, 11 and Detail "H" of Figure 13. The vent should
terminate with an approved vent cap (weather cap) for protection
against rain or blockage by snow.
Vent Cap and
Riser Furnished
by Installer
Optional
Side
Wall Vant
Heater
• The heater requires two uninterrupted air
supply openings; one for ventilation and one to
supply air for proper gas combustion. The air
supply openings should be sized according to
Table 10.
• The openings listed in Table 10. are free open vent
area—if the vents incorporate restrictive louvers, the
vent openings must be increased to compensate
for the area blocked by the louvers (or grills).
Air supply requirements below apply to all
MiniMax NT Series heaters
r i A r o f
M o d l e
2 0 0
2 5 0
3 0 0
4 0 0
Table 10.
Rev. B 2-11-04
Chimney or Gas Vent
Outlet Air
Opening
Inlet Air
Opening
NOTE
R E Q U R I E D A R I S U P P L Y
o C m u b i t s n o r i A e V i t n i t a l n o
S . q . n I S . q . n I
2 0 0 2 0 0
2 5 0 2 5 0
3 0 0 3 0 0
4 0 0 4 0 0
The heater must be located as close as practical to a chimney or
gas vent.
Ridge
Vent Cap and
Riser Furnished
by Installer
Optional
Side
Wall Vant
Heater
Figure 11.
VENT ADAPTORS (ALL MODELS)
The proper draft hood and adapter must be installed on
the heater as shown below and on
P a
4
4
Figure 12.
vent terminated at least 24"
above any object within 10 ft.
More Than10 ft.
Vent Cap
2 ft. min.
3 ft. min.
Roof
Jack
Chimney
Chimney or Gas Vent
Outlet Air Opening
Inlet Air Opening
page 14:
t r N . o V e t n i D . a
6 0 5 0 6 4 . n i
6 0 5 0 7 5 . n i
Vent
Adaptor
15
Figure 10.
P/N NTSM03