Pentair 461020 MasterTemp Low NOx commercial natural gas pool heater, 250K BTU ASMEPentair MasterTemp Low NOx Commercial Natural Gas Pool Heater, 250K BTU ASME, 461020 In stock$342770
Pentair 461020 MasterTemp Low NOx commercial natural gas pool heater, 250K BTU ASME

Pentair MasterTemp Low NOx Commercial Natural Gas Pool Heater, 250K BTU ASME, 461020

Ask a questionAPS # PUR-15-0778
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$342770

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Quick overview

  • 250,000 BTU input Pentair rates the BTUH input on this MasterTemp at 250,000.
  • ASME rated The ASME version of the MasterTemp, which is what commercial specifications normally call for.
  • Heavy duty cupro nickel The high performance, heavy duty exchanger, chosen where water chemistry is hard on plain copper.
  • Digital control Digital control type with electronic ignition, so there is no standing pilot to relight.
  • Low NOx Built to the Low NOx standard that many regions now require on new gas heaters.
  • 120 gpm through 2 inch Rated for 120 gpm flow with 2 inch water connections and a 3/4 inch gas connection.
Full description and specifications ↓

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Product details

The Pentair 461020 is the commercial MasterTemp, an ASME rated natural gas pool and spa heater with 250,000 BTU input and a heavy duty cupro nickel heat exchanger.

What the commercial version adds

Two things separate it from the backyard MasterTemp. It is ASME rated, which is what most commercial specifications and inspectors ask for on a public pool. And the exchanger is the high performance, heavy duty cupro nickel build, which holds up better where water chemistry runs hard on plain copper. On a commercial pool that gets shocked, corrected and pushed harder than a home pool, that difference shows up in the service life.

Controls and firing

Control is digital with electronic ignition, so there is no standing pilot burning fuel between cycles and nothing to relight after a windy night. It is Low NOx rated, which matters in the regions that now require it on new gas installations.

Planning the installation

The cabinet measures 23.02 inches wide, 32.61 inches deep and 28.15 inches high. Water connections are 2 inch, the gas connection is 3/4 inch, and the heater is rated to 120 gpm of flow. Electrically it wants 120/240 VAC, 60 Hz, single phase. Gas heater installation is licensed work, and a commercial ASME heater is not an install to attempt without one.

Specifications
Brand Pentair
Manufacturer part number 461020
UPC 788379858261
Item Low NOx Pool and Spa Heater
Type High Performance, Heavy-Duty
Gas Type Natural Gas
Control Type Digital
BTUH Input 250,000
Cabinet Width 23.02"
Cabinet Depth 32.61"
Cabinet Height 28.15"
Gas Connection 3/4"
Water Connection 2"
Voltage Rating 120/240 VAC
Frequency Rating 60 Hz
Phase 1-Phase
Flow Rate 120 gpm
Shipping weight 144 lb
Ships Freight

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Questions and answers

What people ask about this product, answered by our pool techs.

Is this the commercial version?
Yes. It is the ASME rated commercial MasterTemp, 250,000 BTU input, part number 461020.
What gas does it burn?
Natural gas. Pentair lists the gas type for 461020 as natural gas, so it is not the propane model.
What size connections does it need?
Water connections are 2 inch and the gas connection is 3/4 inch. Pentair rates the heater for flow up to 120 gpm.
What electrical supply does it need?
120/240 VAC at 60 Hz, single phase.
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