Pentair MT125 - Heater Identification; Heater Identification Number (HIN); Heater Data Rating Plate Location

MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide 460906 Rev. D 8/2020
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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 Identication Number (HIN).
a. HeaterIdenticationNumber(HIN)
The following example simplies the identication system:
1) MT : MasterTemp
2) Model Size : 125 : Input rating (Mega Joule [MJ]/hr)
3) Construction : (HD = Heavy Duty Model)
4) Fuel Type : (LP = Propane gas or N = Natural gas)
MT 125 HD
MT = MASTERTEMP
MODEL SIZE = MJ INPUT = Mega Joule [MJ] / HR
H. I. N.
HEATER IDENTIFICATION NUMBER
ID DESIGNATOR FOR PENTAIR WATER POOL AND SPA
MASTERTEMP™ 125 HEATER
Example:
123 4
FUEL TYPE =
N = NATURAL GAS
LP = PROPANE GAS
125 (125 MJ /HR)
HD = HEAVY DUTY MODEL
N
Heater Identification Information
Heater Identification Information
HEATER IDENTIFICATION INFORMATION — (HIN)
The heater data rating plate is located on the inner front panel of the heater. To access the data rating
plate, unbolt and remove the side door access panel as shown below.
Heater Data Rating Plate Location
Door Acess Panel
Top Panel
Door Acess Panel
AUSTRALIA ONLY
GAS SAFETY CERTIFICATION
DO NOT REMOVE
TM