Alternate Heating AHS250 Bedienungsanleitung
ALTERNATE HEATING SYSTEMS
USED-OIL FIRED FURNACE
Owner’s and Operator’s Manual
Models AHS250, AHS500
All Installations Must Be In Accordance With
State and Local Codes
Alternate Heating Systems
2393 Little Egypt Road
Harrisonville, PA 17228
Telephone: 717-987-0099
Fax: 717-987-0055
INTRODUCTION
The Alternate Heating Systems used oil-fired furnaces have been specifically designed for
burning No. 2 fuel oil, used motor oil, transmission oil, and mixtures not exceeding 50 SAE.
These furnaces have unique features not found in conventional furnace designs.
Alternate Heating Systems manufactures the furnace vessel to ASME standards. Used oil
combustion technology differs significantly from burners designed for No. 2 fuel oil only.
Additionally, used oil combustion in the furnace can produce adverse results not
encountered in warm air heat exchangers.
Fast access to the fire tubes is provided by the large doors on the rear and front of the
furnace. CAUTION: Do not open the access door unless the power has been turned
off.
This furnace must be installed by a qualified technician, knowledgeable in hot water heating
system design requirements.
These furnaces may have one or more hot water heating coils to produce domestic hot water
for car washes, shower, etc. Consult the enclosed diagram for an appropriate method for
piping the domestic coils. If the furnace coil serves hand taps it must have a tempering
valve to ensure that excessively hot water does not contact humans.
IMPORTANT: Furnace temperature must be around 1800.
If anything in this manual is unclear or technical assistance is required, contact your
authorized representative or call Alternate Heating Systems at 717-987-0099.
GENERAL OPERATION AND INSTRUCTION
WATER PRESSURE
It is of utmost importance to maintain the water pressure. An automatic fill device is recommended.
WARNING: Never add water to a hot unit if the water level has fallen below the metal dome. Failure to
allow the dome to cool could result in severe injury or death and damage to property.
OVERFLOW PIPE
Plumbing from the overflow pipe should direct the flow toward the floor, preferably near a floor drain.
BURNER DOOR
A lock nut and hair pin should always be used on the burner door to ensure that it does not open during
operation.
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STOP: BEFORE FIRING THE BURNER, THE FURNACE &
HEATING SYSTEM MUST TO BE FULL OF WATER. Firing without
the furnace being completely full VOIDS all warranty.
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ELECTRICAL CONTROLS:
The AHS Furnace is designed to maintain a constant Furnace Temperature (Higher than
1800) controlled by the Operational Temperature Aquastat (OP) and the High Limit
Aquastat (Hi) located at the top of each furnace. The OP Aquastat is in series with the Hi
Limit Aquastat. The Hi Limit Aquastat is used only for safety. If by some means the
operational aquastat allows the burner to operate over it’s set point, the Hi limit Aquastat
will shut the burner down some (most Hi Limits have a manual reset).
ELECTRICAL CONNECTIONS:
Heat is provided by the primary control on the burner. We have a very simple electrical
hook up. When installing your burner to the AHS Waste Oil Furnace, just locate the cable
with 2-conductor thermostat wire (red, white, black) coming from the junction box on the
side of the furnace to your burner. Then find the thermostat “T” terminal screws on the
primary control and attach 1 wire to 1 “T” screw and the other wire to the other “T” screw.
See Illustration on the next page. The red wire is for oil pump power, the white wire is
neutral and the black wire is power.
CODE INFORMATION
Purchase of an Alternate Heating Systems, LLC multi-oil furnace is a wise investment. To
maximize the return of this investment you must read the manual.
You can expect years of reliable performance with a properly installed and maintained
system.
NOTE: THIS FURNACE CANNOT BE INSTALLED IN A RESEIDNTIAL HOME.
The installation of the equipment shall be in accordance with the codes and regulations of
authorities (state or local) having jurisdiction over environmental control, fuel, fire and
electrical safety. The installation of equipment in the United states must consider the
requirements of the following publications of the National Fire Protection Association,
Battery March Park, Quincy, Massachusetts 02269.
N.F.P.A. No 30 Flammable and Combustible Liquids Code
N.F.P.A. No. 31 Standard for Installation of Oil Burning Equipment
N.F.P.A. No. 88A Standard for Parking Structures.
N.F.P.A. No. 88B Standard for repair Garages.
N.F.P.A. No 211 Standard for Chimney, Fireplaces, Vents and Solid
Fuel Burning Appliances.
The installation of equipment in Canada must consider the requirements of C.S.A., Standard
B 139, Installation Code for Oil Burning Equipment.
NOTE: Installation, operating and maintenance permits from each of the above
authorities may be required, as well as municipal permits.
Please read and save your manual for future reference. Read your installation manual
thoroughly first in order to insure that you’re new heating system operates properly.
Minimum Clearances Between Furnace and Combustibles:
Above 12” Chimney Connector 18”
Sides 24”
Rear 36”
Front 36”
This furnace is listed for burning #2 fuel oil, used motor oil, and transmission oils with
mixtures not exceeding 50 S.A.E.
DO NOT BURN unknown garbage oils, gasoline, and naphtha or chlorinated cleaning
solvents in this furnace.
WASTE OIL FURNACE INSTALLATION
Sizing Furnace Correctly
In order to make a prudent choice when determining the size of a waste oil furnace required
for an installation, it is necessary to do a heat loss survey of the building.
If the unit is equipped with a domestic hot water coil, this fact will need to be considered
when sizing. Drawing hot water at a rate of 3 gallons per minute requires approximately
150,000 BTUH, assuming a temperature rise of 100 degrees F. (55 Degrees C.). Other
unusual factors such as supplying heat for a pool or hot tub should be considered.
Rigging and Positioning of Furnace
Do not attempt to move or off-load the furnace without the aide of a crane or dolly. Most
waste oil models have a lifting lug in the center of the top while on some units two lifting
lugs in the front and rear are provided.
Once on the floor level where it will be installed, the unit may be rolled on pipe or by
means of a pallet jack. The waste oil furnace must be placed on a concrete slab, or
other rigid pad of non-combustible material, with sufficient strength to adequately
support the furnace, including its contents of water.
AHS WASTE OIL FURNACE SPECS
Model 250 Model 500
Waste Oil GPH approx. 1.75 4.0
Gross BTUH approx. 240,000 500,000
Heating surface fireside (sp. Ft.) 36 Sq. Ft. 73 Sq. Ft.
Water volume (gals) approx. 110 Gal 225 Gal
Boiler length 37” 67”
Boiler width 41 ½” 38”
Boiler Height 47” 43”
Flue Diameter 8” 8”
Shipping weight approx. 1,260 lbs 1,640 lbs
*Specification and design subject to change without notice.
FURNACE ROOM REQUIREMENTS
a. Room should be well lighted and should have a source of emergency light.
b. Convenient water supply available for furnace flushing and to clean the furnace room
floor.
c. Unobstructed floor drains.
d. Must have adequate air supply, which must be kept clear at all times.
Since the combustion process requires a supply of air at all times, it is essential that
provisions are made to supply adequate air to the furnace room. This air supply is
necessary to insure complete combustion, a clean fire and to prevent nuisance shut
downs due to excessively dirty burner parts. Air from the outside may be provided
through ducts, fixed louvers or motorized louvers.
BOILER CONDITIONER/SEALANT
AHS provides two bottles of Boiler Conditioner/Sealant with the purchase of your
boiler. When filling your boiler with water for the first time, mix content of each bottle
with 2 gallons of warm water. Pour into boiler opening. Replace plug. An MSDS is
available upon request.
INSTALLATION OPTIONS
Domestic Hot Water Coil
These coils can be factory or field installed. Coils are rated at 5 GPM. The coils can be used for domestic
hot water and wash bays. You can also use these coils to pre-heat water in hot water heaters.
There are three methods for plumbing the domestic coil. One way is to connect the coil in series with an
existing hot water heater.
PLUMBING – COIL IN SERIES
A second method is to connect the coil in parallel with an existing water heater so that the conventional
water heater may be used when the waste oil boiler is not being fired, in the summer, for example. The
diagram below indicates how this can be done.
PLUMBING – COIL IN PARALLEL
NOTE: Installation where the coil discharges directly into the hot water distribution system, a tempering
valve must be included to limit the temperature of the water at the faucet to a safe level.
The third method uses a small pump to circulate water continuously between the coil and existing hot water
heater. It is also necessary to include a tempering valve on the supply side of the storage tank/water heater.
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