Pentair 474059 tube sheet coil assembly kit for MasterTemp 250NA and 250LP heatersPentair Tube Sheet Coil Assembly Kit for 250NA 250LP MasterTemp Heater, 474059 In stock$96399
Pentair 474059 tube sheet coil assembly kit for MasterTemp 250NA and 250LP heaters
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Pentair Tube Sheet Coil Assembly Kit for 250NA 250LP MasterTemp Heater, 474059

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$96399
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Quick overview

  • Complete rebuild kit The coil assembly plus every seal, o-ring and gasket the swap calls for, and the ignitor kit.
  • Fits MasterTemp 250 For 250NA natural gas and 250LP propane heaters manufactured after 1/12/09, the new tub design.
  • Eight of each seal 8 coil o-rings and 8 tube sheet seals come in the box.
  • Bypass valve included A manifold bypass valve package is part of the kit.
  • Sealant and insulation A tube of high temp RTV silicone and a Koala wool insulation service kit are included.
  • Ignitor and gaskets Includes the ignitor and gasket kit and the blower/adapter plate gasket.
Full description and specifications ↓

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Product details

Pentair 474059 is the tube sheet coil assembly kit for the MasterTemp 250NA and 250LP heaters. It is a genuine Pentair part, and it fits heaters manufactured after 1/12/09, the new tub design.

Everything for the exchanger swap

Beyond the coil assembly itself the kit carries 8 coil o-rings, 8 tube sheet seals, a metal tube replacement o-ring, a blower/adapter plate gasket and a tube of high temp RTV silicone, so the heater goes back together sealed without a second parts order. A manifold bypass valve package, a Koala wool insulation service kit and a sheet metal warning label are also included.

Ignitor included

An ignitor and gasket kit rounds out the package, which makes sense on a job where the burner side is already open.

Before you order

Confirm the heater is a 250NA or 250LP and that its manufacture date is after 1/12/09. Earlier heaters use a different tub and are not covered by this kit.

Specifications
Brand Pentair
Manufacturer part number 474059
UPC 788379791971
Fits MasterTemp 250NA, 250LP heaters manufactured after 1/12/09 (new tub design)
Tube sheet coil assembly 250 1
Coil o-rings 8
Tube sheet seals 8
Metal tube replacement o-ring 1
Manifold bypass valve package 1
High temp RTV silicone 1 tube
Koala wool insulation service kit 1
Blower/adapter plate gasket 1
Ignitor and gasket kit 1
Sheet metal warning label 1
Shipping weight 30.6 lb
Ships Parcel

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Questions and answers

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

Will this fit my MasterTemp 250?
It fits the 250NA and 250LP built after 1/12/09, which Pentair calls the new tub design. Check the manufacture date on the heater rating plate before ordering.
Do I need to buy seals separately?
No. The kit includes 8 coil o-rings, 8 tube sheet seals, the metal tube replacement o-ring, the blower/adapter plate gasket and a tube of high temp RTV silicone.
Is the ignitor included?
Yes. An ignitor and gasket kit is part of the package.
Is this a genuine Pentair part?
Yes. Part number 474059 is the Pentair kit for the MasterTemp 250.
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