Pentair MasterTemp 250 User Manual

MASTERTEMP Pool and Spa Heater Installation and User’s Guide Rev. N 10/2018
4
To identify the heater, see rating plate on the inner front panel of the heater. There are two designators for each
heater, one is the
Model Number and the other is the Heater Identification Number (HIN).
a. Heater Identification Number (HIN)
The following example simplifies the identification system:
1) MT : MasterTemp
2) Model Size : (175, 200, 250, 300 or 400) : Input rating (Btu/hr) X 1000
3) Fuel Type : (LP = Propane gas or NA = Natural gas)
4) Construction :(STD = Standard Model)
(HD = Heavy Duty Model)
(ASME = ASME Certified Model)
(HD ASME = Heavy Duty ASME Model)
Section 1. Heater Identification Information
Section 1: Heater Identification Information
HEATER IDENTIFICATION INFORMATION — (HIN)
MT 250 NA ASME
MT = MASTERTEMP
FUEL TYPE =
CONSTRUCTION =
MODEL SIZE = BTU INPUT in 1000 of BTU / HR
H. I. N.
HEATER IDENTIFICATION NUMBER
ID DESIGNATOR FOR PENTAIR AQUATIC SYSTEMS MASTERTEMP HEATERS
STD = STANDARD MODEL
HD = HEAVY DUTY MODEL
ASME = ASME CERTIFIED MODEL
HD ASME = HEAVY DUTY ASME MODEL
NA = NATURAL GAS
LP = PROPANE GAS
Example:
1 2 3 4
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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