Pentair MASTERTEMP 125 - Warnings and Safety Instructions; IMPORTANT SAFETY INSTRUCTIONS

MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide P/N 475114 Rev. F 9/2020
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Congratulations on your purchase of a MasterTemp 125 high performance heating system. Proper installation and
service of your new heating system and correct chemical maintenance of the water will ensure years of enjoyment. The
MasterTemp
125 heater is a compact, lightweight, efcient, induced-draft, gas red high performance pool and spa heater
that can be directly connected to PVC pipe. The heater also comes equipped with the Pentair multifunction temperature
controller which shows, at a glance, the proper functioning of the heater. All MasterTemp 125 heaters are designed with
a direct ignition device, HSI (hot-surface ignition), which eliminates the need for a standing pilot. The MasterTemp 125
heater requires an external power source (240 VAC 50 Hz) to operate.
SPECIALINSTRUCTIONSTOOWNER:Retain this manual for future reference. This instruction manual provides
operating instructions, installation and service information for the MasterTemp 125 high performance heater. The
information in this manual applies to all MasterTemp 125 heater models. READANDREVIEWTHISMANUAL
COMPLETELY, it is very important that the owner/installer read and understand the section covering installation
instructions, and recognize the local and state codes before installing the MasterTemp
®
125 heater. Its use will reduce
service calls and chance of injury and will lengthen product life. History and experience has shown that most heater
damage is caused by improper installation practices.
IMPORTANT NOTICES
For the installer and operator of the MasterTemp 125 pool and spa heater. The manufacturer’s warranty may be void
if, for any reason, the heater is improperly installed and/or operated. Be sure to follow the instructions set forth in this
manual. If you need any more information, or if you have any questions regarding to this pool heater, please contact
Pentair Aquatic Systems.
HEATER APPLICATION INFORMATION
The MasterTemp 125 pool heater is sold with a limited factory warranty. PentairWaterPoolandSpahighstandards
ofexcellenceincludeapolicyofcontinuousproductimprovementresultinginyourstate-of-the-artheater.We
reservetherighttomakeimprovementswhichchangethespecicationsoftheheaterwithoutincurringanobli-
gationtoupdatethecurrentheaterequipment.
Theheaterisdesignedfortheheatingofchlorine,bromineorsaltsystemswimmingpoolsandspasorinnon-
stationaryinstallations,andshouldneverbeemployedforuseasspaceheatingboilersorgeneralpurposewater
heaters.Themanufacturer’swarrantymaybevoidif,foranyreason,theheaterisimproperlyinstalledand/or
operated.Besuretofollowtheinstructionssetforthinthismanual.
CAUTION
OPERATING THIS HEATER CONTINUOUSLY AT WATER TEMPERATURE BELOW 20° C (68° F). WILL CAUSE HARMFUL
CONDENSATION AND WILL DAMAGE THE HEATER AND VOID THE WARRANTY. Do not use the heater to protect pools
or spas from freezing if the final maintenance temperature desired is below 20° C (68° F), as this will cause condensation
related problems.
Warning and Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
MasterTemp
™
125 High Performance Heater
iv
Warning and Safety Instructions