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22
INDOOR VENTING — General Requirements
NOTE: REMOVE OR COVER "OUTDOOR ONLY" LABEL LOCATED ON HEATER OUTSIDE PANEL WITH
"INDOOR INSTALLATION" LABEL (P/N 474275) INCLUDED IN METAL FLUE COLLAR KITS (P/N SF 43-11-06
AND
If you are considering connecting this heater to a pre-existing vent system, make sure that the vent system meets the
appropriate venting requirements as given in this manual on pages 23-29. If not, replace the vent system. DO NOT
use a draft hood with this heater. The MasterTemp heater is capable of a 270-degree discharge rotation and with a vent
gas temperature less than 204° C (400° F). The total length of the horizontal run must not exceed the length that is
listed in Table 4 on page 23.
HEATER CLEARANCES — General Requirements
INDOOR INSTALLATION AND OUTDOOR SHELTER
The following clearances must be maintained from the nearest walls: (See Figure 16 and Figure 17)
TOP...............................15 cm. (6 in)
EXHAUST SIDE .......... 15 cm (6 in.)
HEADER SIDE ............ 15 cm (6 in.)
DOOR PANELS* ........ 15 cm (6 in.)
Note (*) For service access it is advisable to allow for sufficient clearance on at least one door panel. The heater is
designed for installation on combustible flooring. For installation on carpeting, the heater must be mounted on a metal
or wood panel that extends at least three inches (10 cm) beyond the base of the heater. If the heater is installed in a closet
or alcove, the entire floor shall be covered by the panel. On an outdoor shelter installation, the exhaust discharges into a
vent pipe. Orient the heater so that the vent pipe does not interfere with adjustment of the operating controls. The control
panel located on the top panel can be rotated to any of the three sides of the heater for easy access. However, the control
panel must not be located on the side where the vent is located.
(*) For service access, it is advisable to allow for
sufficient clearance on at least one door panel.
15 cm*
(6 in)
Figure 16.
Note: (*) Illustration only, heater cannot
be enclosed on all four sides.
MasterTemp Pool and Spa Heater
INDOOR INSTALLATION
(SEE INSTALLATION GUIDE FOR CORRECT PLACEMENT OF THIS LABEL)
Vent Cap and
15 cm
Riser Furnished
(6 in)
by Installer
*
15 cm
(6 in)
15 cm
(6 in)
Figure 17.
P/N 474275
Chimney or Gas Vent
Side
Heater
Wall Vent
Section 1.
Installation
Outlet Air Opening
Inlet Air Opening
P/N 474131 Rev. M 8/2020
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