Heater Clearances - General Requirements (Indoor Installation For Us Or Outdoor Shelter For Canada); Outside Vent Cover Removal; Combustion Air Supply - Pentair MASTERTEMP 125 Guide D'installation Et D'utilisation

Section 3. Installation Instructions
18
HEATER CLEARANCES — General Requirements
INDOOR INSTALLATION (U.S.) OR OUTDOOR SHELTER (CANADA)
The following clearances must be maintained from combustible surfaces:
TOP...............................6 in. (15 cm)
EXHAUST SIDE ...........6 in. (15 cm)
HEADER SIDE .............6 in. (15 cm)
DOOR PANELS† .........6 in. (15 cm)
Note (†) For service access it is advisable to allow for sufficient clearance on
at least one door panel. The heater is design certified by CSA International
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 (10cm) 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 (see Figure 10).

OUTSIDE VENT COVER REMOVAL

The heater is supplied from the factory with a built-in stackless outside vent for outdoor
installation. Remove the outside vent cover for outdoor shelter installation.

COMBUSTION AIR SUPPLY

For indoor installation, the heater location must provide
sufficient air supply for proper combustion and ventilation
of the surrounding area.
The minimum requirements for the air supply specify that
the room in which a heater is installed should be provided
with two permanent air supply openings; one within 12
inches (30cm) of the ceiling, the other within 12 inches
(30cm) of the floor for combustion air, in accordance with
the latest edition of ANSI Z223.1, or the National Fuel
Gas code, the CSA B149.1, Natural Gas and Propane
Installation Codes, as applicable, and any local codes that
may apply. These openings shall directly, or through duct,
connect to outdoor air.
Note: For indoor installations where combustion
air might be insufficient, see "Direct Air Intake
Duct with 3-inch PVC Pipe (Indoor Installation)"
on page 19.
MASTERTEMP 125 Pool and Spa Heater Installation and User's Guide
(*) For service access, it is advisable to allow for
sufficient clearance on at least one door panel.
15 cm*
(6 in)
Air Supply Requirements Guide
for MasterTemp
Minimum Net Free Open Area for Each Opening*
(Square Inches/Centimeters)
All Air From Inside Building
Model
Combustion Vent
200 sq. in. 200 sq. in.
125
1290 sq. cm. 1290 sq. cm.
Area indicated is for one of two openings; one at floor level and one at the ceiling.
*
15 cm
(6 in)
15 cm
(6 in)
15 cm
(6 in)
Figure 10.
®
125 Heater
All Air From Outside Building
Combustion Vent
50 sq. in. 50 sq. in.
323 sq. cm. 323 sq. cm.
Table 3.
Rev. C 3/2019
*