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MegaTherm

®

High Performance Gas Fired 

Commercial Pool Heater

Standard Features

 Reliable operation on natural or propane gas.

 Electronic ignition.

 Built-in draft diverter (indoor models) simplifies installation.

 Flow switch standard on all models.

 Integral pump assures proper water flow (Models 500–1825).

 Automatic gas valve.

 Stainless steel burners, with slide-out burner tray for easy  

  maintenance and long life (Models 500–1825).

 Galvanized steel jacket with acrylic finish for strength and durability.

 High temperature refractory firebox liner to 2000° F for  

  greater efficiency.

 Easy-to-service header flanges.

 Corrosion-resistant glass-lined or bronze headers.

 Integral lined copper tube heat exchanger for higher efficiency.

 Electronic temperature control for accuracy. (Models 500–1825;  

 

  model configuration varies slightly by size.)

 One-year limited warranty. See warranty for details.

Powerful, efficient, and reliable, MegaTherm

®

 pool  

heaters are designed for commercial, institutional and large 
residential pools where economical performance and rapid 
heat-up are required. Available in indoor and outdoor  
models, with twenty-two sizes from 500,000 to 5,000,000  
BTU/h to precisely match any heating requirement.

MegaTherm is designed to deliver efficiencies as high as 82%. 
Integral finned copper tubes are rolled directly into the headers, and 
conformal heat exchanger baffles and an eight-fins-per-inch tubing 
configuration maximize combustion heat extraction. We’ve also  
designed MegaTherm to be simple to service. Heat exchanger 
header covers are field-removable for complete inspection of tubing 
and header passages, and the heat exchanger is replaceable  
without disassembly of the burners or combustion chamber.

MegaTherm is design certified to the ANSI

®

 Z21.56 Standard for 

Gas-Fired Pool Heaters. (Outdoor 500–1825 units are certified for 
use without the addition of a draft diverter or external vent. Indoor 
units incorporate a built-in draft diverter and require only vent  
piping.) Salt water models (500–1825) are available with cupronickel 
alloy heat exchanger tubes and bronze headers and header covers.

Summary of Contents for 5001825

Page 1: ... commercial institutional and large residential pools where economical performance and rapid heat up are required Available in indoor and outdoor models with twenty two sizes from 500 000 to 5 000 000 BTU h to precisely match any heating requirement MegaTherm is designed to deliver efficiencies as high as 82 Integral finned copper tubes are rolled directly into the headers and conformal heat excha...

Page 2: ...67 6380 593 5740 533 4050 I 33210 3085 22140 2057 16605 1543 13285 1234 11070 1028 9490 882 8300 771 7380 686 6640 617 4500 I 36900 3428 24600 2285 18450 1714 14760 1371 12300 1143 10545 980 9225 857 8200 762 7380 686 5000 I 41000 3809 27335 2539 20500 1904 16400 1524 13665 1269 11715 1088 10250 952 9110 846 8200 762 Temperature Difference Indoor Sizes 500 1825 Indoor Sizes 2000 5000 Dimensional D...

Page 3: ... surface areas for each heater model with typical temperature differences Make the appropriate selection from the chart Outdoor Input1 Output1 inches NPT inches Dimensions2 inches cm Size MBTU h kw MBTU h kw Nat LP NPT A B C D E F V 500 E 500 147 410 120 1 3 4 21 2 333 4 86 451 4 115 600 E 600 176 492 144 1 3 4 21 2 383 4 98 501 4 128 715 E 715 210 586 172 1 3 4 21 2 441 4 112 551 4 142 850 E 850 ...

Page 4: ...oy heat exchanger models are available Contact the factory for part numbers MT0500IN09C1PC Indoor Spark Ignition On Off Pump Mtd Cl Cu HX Std Unit Nat Gas MT0600IN09C1PC Indoor Spark Ignition On Off Pump Mtd Cl Cu HX Std Unit Nat Gas MT0715IN09C1PC Indoor Spark Ignition On Off Pump Mtd Cl Cu HX Std Unit Nat Gas MT0850IN09C1PC Indoor Spark Ignition On Off Pump Mtd Cl Cu HX Std Unit Nat Gas MT0999IN...

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