Pentair MasterTemp 400 User Manual

MasterTemp Pool and Spa Heater P/N 474131 Rev. M 8/2020
2
To identify the heater, see the data 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).
Heater Identification Number (HIN)
The following example simplies the identication system:
1) MT : MasterTemp
2) Model Size : (200, 300 or 400) : Input rating (Mega Joule [MJ]/hr)
3) Construction : (HD = Heavy Duty Model)
4) Fuel Type : (LP = Propane gas or N = Natural gas)
Section 1. Heater Identification Information
MT 300 HD
MT = MASTERTEMP
MODEL SIZE = BTU/hr GROSS INPUT
H. I. N.
HEATER IDENTIFICATION NUMBER
ID DESIGNATOR FOR PENTAIR POOL AND SPA MASTERTEMP HEATERS
Example:
123 4
FUEL TYPE =
N = NATURAL GAS
LP = PROPANE GAS
200 (200 [BTU/hr), 300 (300 [BTU/hr) or 400 (400 [BTU/hr)
HD = HEAVY DUTY MODEL
N
Heater Identification Information (HIN)
Heater Data Rating Plate Location
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
Door
Access
Panel
Top Panel
Remove this Door
Access Panel to access
the DATA RATING PLATE
AUSTRALIA ONLY
GAS SAFETY CERTIFICATION
DO NOT REMOVE
TM

Pentair MasterTemp 400 Specifications

General

BTU Output	400, 000 BTU
Ignition	Electronic
Display	Digital
Model	MasterTemp 400
Category	Heater
Voltage	120V
Type	Pool Heater
Efficiency	82%
Certifications	ANSI, ASME, CSA
Fuel Type	Natural Gas or Propane
BTU Input	400, 000 BTU
Water Flow Rate	Up to 120 GPM