Hayward Pool Heater Universal H-Series Low Nox 250K BTU NG

MODEL#H250FDN

MANUFACTURERHayward Pool Products

  (4.8 out of 5 Stars on 5 Ratings)

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Product Description

Universal H-Series Low NOx Heaters
For In-Ground Pools and Spas - Electronic Ignition Dual Thermostat



Now With Cupro Nickel Heat Exchanger!

NEW Hayward Universal H-Series Low NOx heater combines industry-leading hydraulic performance; environmentally responsible low NOx emissions and a standard cupro nickel heat exchanger with a low profile appearance, lighter weight design, independent left or right side electric, water and gas connections plus 2" x 2 1/2" CPVC union connections to provide the ultimate installation flexibility for new or existing equipment pads.

It also includes a forced draft system that constantly moves air through the combustion chamber at a precise flow rate. As a result, all outside weather variables that can affect the heating performance, such as wind conditions, are eliminated - without having to install a high-wind stack.

NOTE: The Hayward Universal H-Series heaters meet the NOx Emission standards set by the California South Coast Quality Air Management Commission for 2001 and the Texas Natural Resource Conservation Commission Code.

Applications:

  • Forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating all outside weather variables that can effect the heating performance, such as high wind conditions -- without a high wind stack.
  • Our patented single header "V" baffle design heat exchangers allow for long life, fast heating and virtually no condensation. All Hayward heat exchangers are now constructed with highly resilient Cupro Nickel for greater durability and longevity even in salt-based, high flow or aggressive water chemistry set ups.
  • Easy-to-read L.E.D. digital Control Panel provides digital temperature readout and diagnostics for quick identification of components that might need service.
  • New polymer header provides superior hydraulic performance to save energy and protect against the damaging effects of erosion from high flow conditions for improved reliability.
  • Designed for today's larger diameter plumbing systems with 2" x 2 1/2" CPVC unions.
  • 1 Year limited warranty
  • Now with Cupro Nickel Heat Exchanger

Technical Specifications

Model # BTU Input Gas Type Heater Width Weight
H250FDN 250,000 Natural 28" 165 lbs.
H250FDP 250,000 Propane 28" 165 lbs.
H350PDN 350,000 Natural 33 1/4" 195 lbs.
H350FDP 350,000 Propane 33 1/4" 195 lbs.
H400FDN 400,000 Natural 36 1/2" 197 lbs.
H400FDP 400,000 Propane 36 1/2" 197 lbs.


Overall Dimensions

BTU:
250,000 BTU
Gas:
Natural
Ignition:
Electronic
Thermostat:
Dual
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Q&A

Asked on 10/08/2013 by Guest

Where can my heater be installed?

Answered on 10/08/2013 by Product Specialist Patrick P.

There are specific venting requirements and clearance distances that must be met to ensure proper operation. Consult the owner’s manual for exact specifications for your model of heater.NOTE: Gas fired heaters should be diagnosed and repaired by trained personnel.

Asked on 10/07/2013 by Guest

Is it possible to convert this heater from natural gas to propane?

Answered on 10/07/2013 by Product Specialist Patrick P.

Yes, it is possible to convert this heater from natural to propane gas as there is a conversion kit for it. To view and purchase this kit you you will need to click here.

Asked on 01/17/2013 by Guest

Is a vent required for typical outside installation for the Hayward 150k Ng Lo Nox heater?

Answered on 01/17/2013 by Product Specialist Patrick P.

For the Hayward  Lo Nox heater, you would not need to purchase an additional vent if you are using it outside. If you are installing the heater outside, we recommend you purchasing a heater cover. This will protect your heater from debris, rain, snow, heat- or pretty much anything that could get caught in your heater. The Weather-Out Pool Heater Cover  can be viewed on our website.

Asked on 10/18/2012 by Guest

What is the elevation rating for the Hayward H-Series Low Nox Heaters

Answered on 10/18/2012 by Product Specialist Patrick P.

Per Hayward, the Hayward H-Series Low Nox Heaters have an elevation rating up to 7,700'

Asked on 10/10/2012 by Guest

What is the difference between an Electronic and Millivolt ignition?

Answered on 10/10/2012 by Product Specialist Patrick P.

The basic answer is that Millivolt is the old style of ignition, using a standing pilot light. While the electronic ignition uses a spark start system like a gas grill. Electronic ignitions are more efficient in gas usage and also are better suited for high wind areas where a pilot light might get extinguished.

Asked on 01/16/2012 by Guest

Will a gas heater operate at the low speed of a dual speed motor?

Answered on 01/16/2012 by Product Specialist Patrick P.

Probably not - Most gas heater will shut off at low GPM levels (20-40) to keep the heater cores from overheating - 20 for 200 BTUs, 40 for 400 BTUs. Depending on your pool system you might get these GPM levels at the low speed but generally these heaters must be run at the motor's high speed.

Asked on 12/29/2011 by Guest

How do you know if a pool heater is a propane heater or a natural gas heater?

Answered on 12/29/2011 by Product Specialist Patrick P.

Typically in the product name we use the abbreviation of "LP" for propane or "NG" for natural gas. Click here for a full listing of our >Pool Heaters.


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Customer Reviews

Ratings Summary

Average Rating:   (4.8 out of 5 Stars)

Recommended: (100%) 5 of 5 customers would recommend this product to a friend.

5 Ratings 5 star:   (4) 4 star:   (1) 3 star: (0) 2 star: (0) 1 star: (0)

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The Most Helpful Review

5 of 5 people found the following review helpful:

   (4 out of 5 Stars) Efficient, easy to use Pool Heater

Reviewed By: from Boston, MA ()

The Hayward 250 BU Lo-Nox natural gas heater is efficient and works quite well. More efficient than our old Hayward microvolt 250 BTU heater. The only drawback so far is the pressure limiter switch on the heater requires a 1 HP pump to work properly.

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The Most Recent Reviews

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   (5 out of 5 Stars) Fast, Silent, and easy to use pool heater

Reviewed By: from McHenry, IL ()

Pros: Compact, Fast, Sient, and easy to use

Cons: Heavy - the electric hookup needs a complete cover

We have gone through 3 pool heaters in 5 years. For the equivalent price, this Hayward (The only brand I will every buy in pool heaters) heats the water faster - 20 degrees in less than 48 hours, easy to start, and the flow monitor is great, and it doesn't sound like its going to rocket to the stars.

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   (5 out of 5 Stars) Hayward Low Nox 250K BTU Pool Heater

Reviewed By: from Elizabethtown, KY ()

This is a fantastic heater. Our gas bill is significantly lower than with the previous heater. Highly recommended!

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1 of 1 person found the following review helpful:

   (5 out of 5 Stars) great pool heater

Reviewed By: from Clermont, FL ()

Pros: For outside, does not need exhaust stack. Is not that loud,so midnight swimming wont disturb next door neighbors. It even looks great.

Cons: Wish it came with cover when not in use

I picked up the heater from the warehouse to save money on shipping. It will fit in a Toyota RAV 4. It weights about 155 lbs. It took 2 people to put it in place. I used 12 12x12 patio blocks to put it on. Installing went smooth. Gas line went on first with only small height adjustment from the other old heater. Then the water lines using 2 inch pvc. Manual says pool pump has to be min. 1 HP motor for this heater to work. Last thing was just to wire it up. We checked gas line connections for leaks and turned on the pool pump. Should wait about 15 seconds for pressure to build. I pushed the mode switch to pool, set the temp and swimming has never been better. It took about half an hour to raise the temp 77 to 81. The unit is so user friendy.

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2 of 3 people found the following review helpful:

   (5 out of 5 Stars)

Reviewed By: from Los Angeles ()

One of the most helpful companies on the web. They were very helpful with questions I had, and the shipment was on time. Best prices and I checked all over.

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