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PENTAIR MASTERTEMP 461021 ASME LOW NOX NATURAL GAS POOL & SPA HEATER – 400K BTU, CUPRO-NICKEL HEAT EXCHANGER
Heating Capacity: 400,000 BTU
Thermal Efficiency: 82%
Fuel Type: Natural Gas
Heat Exchanger: Cupro-Nickel (Heavy Duty)
Certification: ASME
Weight: 149 lbs
Emissions: Certified Low NOx
Application: Commercial
The Pentair 461021 MasterTemp ASME HD Pool & Spa Heater delivers 400,000 BTU in the most heavily specified configuration Pentair offers in this line - ASME certified with a cupro-nickel heat exchanger.
Both specifications earn their place on a demanding commercial pool. ASME certification satisfies code for the pressure vessel. The cupro-nickel exchanger handles salt-chlorinated water and the aggressive chemistry that comes with high bather loads, where standard copper corrodes and fails early.
The trade is 82% thermal efficiency against 84% for the standard copper version - a fair exchange when exchanger replacement on a commercial unit costs far more than two points of fuel efficiency.
Key Features
- 400,000 BTU heating capacity
- 82% thermal efficiency
- Natural Gas
- ASME certified for commercial installations
- Heavy-duty cupro-nickel heat exchanger
- Built for salt-chlorinated and high-chlorine water
- Highest output ASME HD MasterTemp
- Certified low NOx emissions
- Rotating digital display for any installation orientation
- Indicator lights for at-a-glance operation monitoring
- Built-in manual gas shutoff for service
- Rustproof exterior construction
Specifications
| Specification | Details |
| Brand | Pentair |
| Part Number | 461021 |
| Series | MasterTemp 400 ASME HD |
| Fuel Type | Natural Gas |
| BTU Input | 400,000 BTU |
| Thermal Efficiency | 82% |
| Heat Exchanger | Cupro-Nickel (Heavy Duty) |
| Certification | ASME |
| Weight | 149 lbs |
| Emissions | Certified Low NOx |
| Display | Rotating Digital |
| Gas Shutoff | Manual, Built In |
| Exterior | Rustproof |
| Application | Commercial |
What's Included
- Pentair 461021 MasterTemp ASME HD Pool & Spa Heater
- Cupro-nickel heat exchanger assembly
- Rotating digital display control
- Installation and operation documentation
The Pentair 461021 is the fully specified commercial MasterTemp - 400,000 BTU, ASME certified, cupro-nickel exchanger - for high-bather-load salt pools.
Learn more at Pentair:
https://www.pentair.com/en-us/products/business-industry/commercial-pool-products/commercial-pool-heaters/mastertemp--high-performance-asme--certified-heaters.html
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