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   Heating  Boilers  Coal Hot Water Boiler Model KG-22 (528,000 BTU's)


Coal Hot Water Boiler Model KG-22 (528,000 BTU's) (KEY)


Starting at $17,215.90
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This product is Made in the USA.

Made In The USA

Coal Hot Water Boiler Model KG-22 (528,000 BTU's) (KEY)
Coal Hot Water Boiler Model KG-22 (528,000 BTU's) (KEY)



Automatic Coal-fired Hot Water Boiler
Enjoy the economy of anthracite coal and the convenience of oil firing in an efficient boiler. Easy switching from stoker to oil firing

Boiler gauge
High capacity steam chest, a large supply of steam or hot water.
Down-draft multi-pass steel boiler is entirely surrounded by water walls, forcing hot vapors to brush the entire inner surface o that the maximum amount of useful heat is extracted.
Sealed ash pit
Box-in-box, internally braced, welded steel construction
Low stack outlet traps heat in boiler
Heavy gauge high quality steels assures long life and utility
Vertical water baffle increases internal heat recovery action
Copper coil provides instant hot water
For STEAM BOILER - add $343.50

Price Includes:
Stoker Unit, Boiler, Jacket, Hopper, 5 Gallon Coil, Auto Damper, Altitude Gauge, Times, Thermstat, Triple Aquastat, 4006B Acq. Relief Valve, 2 Ash Receptacle and a B-30 Combustion Blower.



A simple feed mechanism with very few moving parts, which can easily be adjusting and maintained by the average householder. Troublesome belts, sheer pins, and worn conveyors have been eliminated. A secondary combustion fan allows boiler to operate with a small fire to use less coal, eliminate overhearing, and will maintain a fire in any draft condition.

Silent electric motor

Feed mechanism is easily and quickly adjusted.

Comfortable Warmth, Keystoker winter conditions your home with clean even heat. Accurate controls and thermostat provide automatic well-regulated warmth with quick response to weather changes. Warm air water or steam heat are equally efficient with the KEYSTOKER unit.

ABUNDANT HOT WATER is available – 200 gallons or more, every hour of every day. This year round plentiful supply is made possible by the use of copper coils that heat your water in a jiffy. No hot water tank to install. Standard in all boilers.

LOW COST FUEL, KEYSTOKER is the most economical and efficient using anthracite rice or buckwheat coal. The savings on fuel bills alone will pay for your Keystoker in the course of time.

LOW INITIAL COST – check and compare. When you compare the cost of the Keystoker with any automatic hot water hearing unit, you'll realize how reasonable Keystoker is priced


Total Capacity Square Feet of Radiation
Steam: 2200
Hot Water: 3520

Recommended Load Square Feet of Radiation
Steam: 1540
Hot Water: 2475

B.T.U. per HR TO THE NEAREST THOUSAND
Net: 448
Gross: 528

Hopper Capacity lbs
585

Gallons of Water
188

Smoke Outlet Size
14"

Unit Dimension:
37"w x 62½"l x 61"h


What Size Coal Can I Burn
On chimney models, rice, buckwheat, or a mixture of both

How Do I Get The Fire Started
We find charcoal best. Use a sheet of newspaper with a handful of charcoal. Roll paper into a loose ball and push into coal on grate. Light paper and plug in or turn on switch. Coal will usually light quickly

How Much Coal Will I Burn A Year
That all depends on the size of your home, amount of insulation, outside temperature, and how warm you want your home to be. But the average consumption for one year with a stove is 3 to 4 ton. Boilers burn more
because they are designed to run 12 months a year rather than 6.

How Often Should A Stove Be Cleaned
Once a year. At end of heating season brush down inside firebox remove and vacuum stovepipe and clean under grates. For direct vent systems it may be necessary to clean exhaust system more frequently in cold weather

Why Should I Install A Barometric Damper On Chimney Models?
To maintain a stable and low draft over fire. High drafts especially on windy days will suck super heated air from stove to be wasted up the chimney

Is It Okay To Connect A Stove Or Boiler To The Chimney Used For My Oil Boiler
Not unless there are two flues in the chimney. Check local building codes.

On Dual Fuel Coal And Oil Boilers And Furnaces, Will It Automatically Switch To Oil If The Coal Fire Goes Out?
No. This must be done manually. When burning coal you need to remove the nozzle assembly from the air tube and insert some fiberglass insulation to protect cad cell and transformer. So to switch to oil you would simply remove insulation, reinsert nozzle assembly, and flip the switch coal to oil

Is The Hot Water Coil Standard?
Yes, a 5 gallon coil is installed in every boiler giving you a plentiful supply of hot water year round

Will Boiler Overheat In Summer Time?
No, the timer will maintain a small fire using very little coal

What Type Of Expansion Tank Should I Use For My Boiler?
A basic 15 or 20 gallon tank, EXTROL tank, or FILL-TROL tank can be used

Why Do We Recommend A Loop in Plumbing Installation?
1. In smaller size boilers, maintaining a small fire will produce less than 10,000 BTUs, but Keystoker's efficient boilers trap and store maximum BTUs. Even a small maintenance fire will cause boiler temperature to rise above desired water temperature setting in the upper part of boiler. The loop will allow hotter water, stored in the top of boiler to flow naturally to lower part of the boiler. This will maintain a more even boiler temperature and reduce chance of overheating water.

2. Installing a loop will prevent boiler shock. When circulator runs cooler water from return, the line will not all dump into boiler. Some of the cooler return water will flow through loop and mix with heated water in supply line. This will allow circulator to run for a longer period which is especially important in large heating loads or for homes with radiators.

3. If timer is running too long, or if coal feed adjustment is set too high, water will be overheated. If water temperature reaches temperature setting of 4006B (recommended setting is 220), circulator will turn on to reduce boiler temperature. Cooler water from return line will be forced through loop to cool water quickly (approximately 10 to 15 seconds). This will lessen the likelihood of overheating the entire heating system

Can I Tie A Coal Boiler Wth My Existing Gas Or Oil Boiler?
Yes, many people do this. Return water could feed into coal boiler where it is heated then circulate through existing boiler or bypassing existing boiler. The gas or oil boiler would never need to run making it a backup system

Is It Okay To Install A Boiler Outdoors Without Any Protection From Rain?
No. However, it may be installed in a garage, shed, or other enclosed structure and piped underground into home.

How Do I Size A Boiler?
Check BTU rating on your current boiler. If not available, you need to measure radiation or get some footage of home.

What Is The Difference Between Right And Left Hand Models?
Boilers and furnaces are made with inspection and ash door on either side for proper position in the home. Standing with chest against coal hopper and looking toward the stack outlet on the opposite end of the boiler, choose whether you need doors on the right or left side for more convenience access.


Not included at this time, please call our office at 1-877-373-6677 for an accurate shipping quote.

All deliveries will be common carrier "Curbside Delivery"
"Curbside Delivery" provides delivery made to curb at the end of the driveway. It is not the driver’s responsibility to bring freight into house, garage, etc. Drivers do not assist with unpacking, set-up or clean up.