Pentair MasterTemp 250 User Manual

Rev. N 10/2018 MASTERTEMP Pool and Spa Heater Installation and User’s Guide
17
Section 3. Installation Instructions
3 ft. (1 M) or more
Figure 8.
For minimum exhaust vent clearances for all building openings, including but not limited to vented eaves, doors, windows,
gravity air inlet, see Figure 9, show below.
In Canada, the heater must be installed with the top of the vent at least 10 feet (3m) below, or to either side of, any opening
into a building.
Orient the heater for convenient access to the water connections and the gas and electrical connections.
Note: Check local building codes for installing the heater from any property line set back requirements (see the
installation diagram below).
If installing the heater next to or near an air
conditioning unit or a heat pump, allow a
minimum of 36 in. (91.4 cm) between the air
conditioning unit and the heater.
CAUTION
VENTING GUIDELINES
OUTDOOR INSTALLATION
Check local building codes
for setback requirements.
Force
Air Inlet
Property Line
4'
4'
4'
3'
SIDE VIEW
Building
From building wall
Exhaust Grill
(Vent)
6 in
From window or door
Must be at least 3 ft. above any forced
air inlet located within a 10 ft. radius.
Vent Termination:
Must be located 6 in. away from the building
wall and the following distances away from any building
wall openings, included but not limited to vented eaves,
doors, windows, gravity air inlet:
4 ft. below,
4 ft. horizontally
Figure 9.

Pentair MasterTemp 250 Specifications

General

BTU Output	250, 000 BTU/hr
Fuel Type	Natural Gas or Propane
Efficiency	82%
Ignition	Electronic
Model	MasterTemp 250
Minimum Water Flow	20 GPM
Max Working Pressure	50 psi
Water Connections	2-inch
Certifications	ANSI Z21.56
Voltage	120 VAC