Alternate Heating AHS250 Owner's And Operator's Manual
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Alternate Heating AHS250 Owner's And Operator's Manual

Used-oil fired furnace
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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

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  • Page 1 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...
  • Page 2 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.
  • Page 3 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.

  • Page 4: Electrical Controls

    ELECTRICAL CONTROLS: The AHS Furnace is designed to maintain a constant Furnace Temperature (Higher than ) 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.

  • Page 6: Code Information

    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.
  • Page 7 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...
  • Page 8 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.

  • Page 9: Installation Options

    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.
  • Page 10 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.

  • Page 11: Additional Information

    COIL PARALLEL WITH EXISTING HOT WATER HEATER ADDITIONAL INFORMATION: Each gallon of water circulated through the system delivers a definite quantity of heat which is dependent on the water temperature drop for which the system is designed. Water temperature drop is the difference between the temperatures of the water leaving the furnace and the water returning to the furnace.
  • Page 12 Using 500 rather than 498 for easier figuring, the design water temperature drop multiplied by 500 is the BTU/H (BTU per hour) delivered by the system when one GPM is circulated through the system. The proper pump capacity is determined by dividing the calculated BTU/H heat loss of the structure by the BTU/H carrying capacity of each gallon per minute calculated.

  • Page 13: Furnace Maintenance

    FURNACE MAINTENANCE Disconnect all incoming electrical power prior to servicing this furnace. • Use extreme caution around furnace piping and the McDonnell & Miller low water cut off • since they may be hot (if provided). Accumulation of ash produces numerous adverse effects. Reduced heat transfer (U.S. •...
  • Page 14 Annual furnace check/maintenance list Routine burner maintenance. Routine maintenance of circulating pump(s). Combustion and draft tests. Inspect furnace room louvers or fresh air intake. Cleaning the Flue Passages NOTE: When cleaning waste oil appliance, use appropriate respirator and apparel. Be sure electric power is OFF before opening access doors.
  • Page 15 AHS WASTE OIL FURNACE DIAGRAM:...

This manual is also suitable for:

Ahs500

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