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Choosing a Boiler - Attn: Architects, Specifying Engineers, Owners, Contractors


Firetube, Watertube or Cast Iron? Bent Tube or Straight Tube? Condensing or Non-Condensing?

These are the decisions faced when choosing your next boiler. Making an intelligent choice starts with asking the right questions. “What type of boiler do I need?” “How much should I spend?” “How long should it last?” “What will maintenance cost?” “How much will it cost to operate?”

Type of Boiler
Type of Service
Rite Straight Watertube
Flexible Bent Tube
Horizontal Firetube
Vertical Firetube
Scotchbox Firetube
Cast Iron
Copper Fin
Condensing
15 PSI Steam
Yes
Yes
Yes
Yes
Yes
Yes
No
No
High Pressure Steam
Yes
Yes
Yes
Yes
No
No
No
No
Quick to Steam
(Low Water Volume)
Yes
?
No
Yes
No
?
N/A
N/A
#2 Oil Fired
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Conventional Hydronic Water Heating
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Water > 240 Degrees F
Yes
Yes
Yes
Yes
Yes
?
?
?
Water > 250 Degrees F
ASME Section I HTHW
Yes
Yes
Yes
?
No
No
No
No
? - Check with Manufacturer

Rite Boilers

Rite Boilers

Rite Boilers

Firetube

Cast Iron

Bent Tube

 

 

Copper Fin







Rite Boilers

Purchase Price: Quality never comes cheap but don’t overspend. Buying a condensing boiler for a non-condensing application is like paying extra for a hybrid car and then throwing away the batteries. Rite offers multiple boiler lines - for the boiler you need - at very competitive prices.

Durability: A boiler should be built to last and be field repairable. Why? Because removing an old boiler and putting in a new one is about as pleasant as having your teeth pulled, day after day, by the most expensive dentist in town. Seriously? Yes! - Replacing a boiler can exceed its original cost many times over - and that's not including the cost of a rental unit or business losses incurred while waiting for the new boiler to arrive! Rite Boilers are built to withstand abuse and neglect - and yet remain faithfully repairable year after year.

Maintenance: Rite’s 100% access to inspect and clean the waterside will be your new best friend when it comes to maintaining efficiency and avoiding costly repairs. Operators and inspectors the world over have come to appreciate our rugged, bulletproof design because it's so simple and easy to service. We also won’t hold you hostage when it comes to parts. Say you get a pinhole leak in a Rite boiler tube. You’ll find 2” straight boiler tube stocked in almost every major city. Get a pinhole leak in a bent tube, cast iron or condensing boiler? You must go back to the manufacturer (if they're still in business) - hope that the parts or heat exchanger you need is in stock (and not obsolete or on backorder) - and then pay the piper if you want to get your boiler back on line.

Operating Cost: Let's face it, some of the claims being made about efficiency would make a seasoned politician blush. Unlike a car, the "gas mileage" of your average boiler will degrade over time due to scale and sludge deposits. Putting aside for a moment that many "high efficiency" boilers will also require high cost maintenance, a boiler's operating cost can be boiled down to this simple equation: Fuel burned in a new boiler = cost to operate new boiler. Fuel burned in that same boiler that is scaled will cost X more dollars to operate. A boiler can begin to scale up in a matter of months or even weeks. A scaled boiler can turn X into a big, unpleasant number. Don’t buy a boiler that can’t be solved for X … or you’ll be asking yourself why.      Scale: aka “lime” “mud” “sludge” “bane of man’s existence” – occurs when dissolved solids (the "hardness" in water) settle out in a pressure vessel. It’s the familiar process that ends the life of most water heaters – and boilers. Solids like to drop out of suspension and plate onto the hottest heat transfer surfaces (Murphy’s Law), and as they accumulate, the water will absorb less energy and the efficiency will drop from good – to fair – to poor. When this happens, the heating surfaces begin to overheat. If the scale can’t be removed, stay tuned for tube or pressure vessel failure. At this point, many boilers are scrapped because the cost to replace can be cheaper than the cost to repair – although cheap is hardly the word that will come to mind of the person paying for it! This is why the engineers at Rite developed the boiler they did: A boiler that can be easily cleaned, field repaired and more than capable of maintaining its brand new efficiency year after year after year. A boiler designed to last a lifetime.

So how do some of the other boiler designs compare to Rite? Let’s take a look:

You'll find it's virtually impossible for a person to get inside a firetube boiler to clean out scale. Cast iron boilers offer no access. The "U" bends in bent tube boilers not only create natural traps for scale to collect, but compound this problem by keeping scale hidden from view as well. And copper fintube manufacturers want an exact flow of 7 feet per second through their tubes to protect them from scaling or eroding.

ADDITIONAL FUEL REQUIRED DUE TO SCALE
Scale
Source: Cooper Tools

As the chart shows, this widely recognized problem has a devastating effect on boiler efficiency and operating costs. No matter how impressive a new boilers start-up efficiency is, scale can quickly knock it down - driving up fuel costs year after year until major boiler repairs or replacement is unavoidable.

With a heavy duty heat exchanger consisting of two header drums, removable headplates and a connecting bank of "see-through" tubes, Rite Boilers were designed to remove scale and sludge with ease. In business since 1952 with over 30,000 boilers sold, Rite Boilers has stood the test of time while we continue to innovate and bring new products to market.

CLICK HERE FOR: "A BRIEF HISTORY OF ... BOILERS"

Rite Boilers

Rite Boilers

Rite Boilers

Firetube Scale

Cast Iron Scale

Bent Tube Scale

Copper Fin Scale

Copper Fin Erosion

Rite Boilers

Water Boiler Advantages


Cutaway 1

  • 11-300 Boiler Horsepower.
  • 100% Waterside Access.
  • Large 2" Diameter Tubes.
  • Water Pressure Drop Under 3 Feet.
  • No Minimum or Maximum Flow Rates.
  • No Dedicated Boiler Pump Required.
  • Ceramic Fiber Combustion Chamber.
  • Low Heat Release Fireboxes.
  • Approved for Type B Vent (on Natural and Propane Gas).
  • #2 Oil, Biogas and Digester Gas.
  • 25 Year Thermal Shock Warranty.
  • 25 Year Tube Erosion Warranty.
  • All Models Available U.L. Listed Atmospheric Fired.

ITEM
DESCRIPTION
1 Removable front (and rear) headplates. Available with hinges for weightless operation.
2 Hinges (optional) with removable pins.
3 Headplate flanges drilled and tapped. No flange welded studs to corrode away or interfere with flange gasket surface clean-up.
4 2" straight, inclined boiler tubes.
5 All hot water supply connections over 2" are ANSI 150# raised face flanged.
6 Round stack outlet with built-in stack supports. Single stacks available on atmospheric models up to 7.5 million BTU input.
7 ASME safety relief valve.
8 Top hot water return connection.
9 Probe low water cut-off.
10 Air elimination fitting.
11 Outer sheet metal jacket.
12 1” ceramic fiber insulation.
13 3” fiberglass insulation.
14 2600 degree ceramic fiber combustion chamber.
15 Floating head relieves stress caused by "thermal shock".
16 Rear firebox inspection glass viewport.
17 Firebox access door for boilers 4 million BTUH and larger. Smaller boilers have hinged burner doors.
18 Insulating floor brick (top layer).
19 Refractory floor (bottom layer).
20 Burner door refractory.

Low Pressure Steam Boiler Advantages


Cutaway 2

  • 11-300 Boiler Horsepower.
  • 100% Waterside Access.
  • Large 2" Diameter Tubes.
  • Fast Steaming, Low Mass.
  • Dry Steam.
  • No Mud Drums, Downcomers or Stay Bolts.
  • Large Firebox, Low Heat Release.
  • Approved for Type B Vent.
  • Whisper Quiet Operation.
  • All Models Available Power Burner Fired.

ITEM
DESCRIPTION
15 ASME rated pop safety valve (steam).
16 Primary low water cut-off probe.
17 Steam Supply.
18 Steam column featuring self-indicating low water cut-off and pump controls.
19 Steam final pass "superheat" tubes.
20 Heavy duty cast iron upshot burners provide whisper quiet, maintenance free operation.

High Pressure Steam & High Temperature Hot Water Boiler Advantages


Cutaway 3

  • 9.5 - 250 Boiler Horsepower.
  • M.A.W.P. to 325 PSI.
  • Temperatures to 400º F.
  • Steams in about 5 minutes from a cold start.
  • 99% Steam Quality under steady load conditions.
  • No Steam Baffles or Separators required.
  • Extra Thick Shell and Tubesheets resist tube loosening and corrosion.
  • No Mud Drums, Downcomers or Stay Bolts.
  • Hinged Headplates available for easy waterside access.
  • No Handhole or Manhole Assemblies required.
  • 25 Year Thermal Shock Warranty.
  • 80% maintainable efficiency.
  • Atmospheric or Power Burner Fired.

ITEM
DESCRIPTION
21 Waterside inspection/blowdown connection.
22 Surface blowdown connection.
23 Draft gauge.


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