Instruction/ maintenance manual of the product Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace Allied
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AFFIX LABEL HERE INSTALLATION AND SERVICING INSTRUCTIONS UPFLOW, DOWNFLOW OR HORIZONTAL TWO STAGE HEAT VARIABLE SPEED GAS-FIRED NON-CONDENSING WARM AIR FURNACE Issue 0527 TABLE OF CONTENTS Safety ........................................... 2 Furnace Specifications .
SAFETY The following is a list of safety precautions and their locations in this manual. These safety rules and precautions must be followed when installing this furnace. 1. Use only with type of gas approved for this furnace. Refer to the furnace rating plate.
FURNACE SPECIFICATIONS MODEL UNIT DIMENSIONS DUCT SUPPLY OPENING DUCT RETURN OPENING VENT PIPE DIA. MAX. OVER CURRENT PROTECTION MAX. UNIT AMPS ELECTRICAL SUPPLY MIN. WIRE SIZE(AWG) TEMPERATURE RISE RANGE NET WEIGHT LBS LENGTH WIDTH HEIGHT A B C D E F G H LOW FIRE HIGH FIRE AV050B3 29 1/2 13 1/2 38 1/4 11 1/2 20 3/8 12 21 5/8 4 15 9.
BLOWER MOTOR SPECIFICATIONS AND AIRFLOW ADJUSTING DATA Adjusting Airflow MODEL MOTOR HP BLOWER WHEEL HEAT SETTINGS COOL SETTINGS HEATING CFM @ .50 STATIC COOL CFM @ .
FURNACE WIRING SPECIFICATIONS 20571201 Issue 0527 Page 5 of 28.
The furnace cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur. The unit must also be electrically grounded in accordance with local codes, or in the absence of local codes, with the latest edition of the (U.
LOCATION / PLACEMENT Site Selection : This furnace may be located in an attic, closet, basement, crawl space, alcove or suspended from the ceiling of a utility room or basement. Select a location that will meet all requirements for safety, clearances, ventilation and combustion air, ductwork design, gas piping, electrical wiring and venting.
If the furnace is to be installed in a crawl space, consult local codes. (Use of a concrete pad 1" to 2" thick is recommended.) If the furnace is to be suspended from the ceiling, it will be necessary to use steel pipe straps around each end of the furnace.
If the installation area meets the definition of "Unconfined Space" and does not have additional air requirements as described, the furnace may be installed without making special provisions for combustion and ventilation air.
Figure 4 CONFINED SPACE / OUTDOOR AIR FROM ATTIC Figure 5 CONFINED SPACE / OUTDOOR AIR FROM ATTIC & CRAWL SPACE For an attic installation it is important to keep insulation 12" or more away from any furnace openings. Some types of insulating materials may be combustible.
DUCTING The proper sizing of warm air ducts is necessary to insure satisfactory heating operation. Ductwork should be in accordance with the latest editions of (U.S.) NFPA-90A ( Air Conditioning Systems ) and NFPA-90B ( Warm Air Heating and Air Conditioning Systems ) or Canadian equivalent.
Filters: Air filters must be used in every installation. For side return installations, air filters must be installed external to the furnace casing. An external filter rack kit with filter (parts No. 20069901 or Cat. No. 68L75 12 / 15½" x 25" sizes and 20069902 or Cat.
vent. If deterioration is discovered, the chimney must be repaired or the "B" vent must be replaced. 2. Inspection to ascertain that the vent system is clear and free of obstructions. Any blockage must be cleared before installing this furnace.
4. All pipe should be supported using the proper clamps and/or straps. These supports should be at least every four (4') feet. 5. All horizontal runs of pipe should have at least a 1/4" (in.) per foot of upward slope from the furnace to the vent terminal.
CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.
Figure 11 AUTOMATIC HEAT STAGING JUMPER When installing optional accessories to this appliance, follow the manufacturer's installation instructions included with the accessory. The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur.
This furnace is manufactured for use with Natural gas and must be converted using the proper LP conversion kit for use with LP (Propane) gas. For LP (Propane) gas, a tank regulator is required to reduce supply pressure to 12"-13"w.c. For manifold pressure see Table 6.
Cooling Mode : The units are factory set for the highest airflow for each model. Adjustments can be made to the cooling airflow by repositioning the jumper plug marked COOL - A, B, C, D (see AirFlow Adjustment Table on page 4) based on the information found in the table.
STARTUP AND OPERATIONAL CHECKOUT It is not recommended that this furnace be used as a construction heater during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.
The gas control (Figure 13) has two separate pressure regulator adjustment screws, one for 1 st stage (marked "LO") and the second one for 2 nd stage (marked "HI"). The adjusting screws are positioned on either side of the barbed fitting.
Burner Orifice Sizing: The furnace is supplied with standard orifices for the gas shown on the rating plate. Table 6 shows combinations of heating values and specific gravities for various gases, from which proper input can be obtained.
Limit Control Checkout: After the furnace has been in operation for at least 15 minutes, restrict the return air supply by blocking the filters or closing the return registers and allow the furnace to shut down on high limit. The main burners will shut OFF and the main blower and combustion blower should continue to run.
SEQUENCE OF OPERATION DIRECT IGNITION SYSTEM CONTROL 20571201 Issue 0527 Page 23 of 28.
SERVICING THE FURNACE ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage. Improper servicing could result in dangerous operation, serious injury, death or property damage.
4. Disconnect wires from rollout switch. 5. Remove manifold or burner/manifold assembly. Manifold ONLY a. Remove the No. 10 screws that secure the manifold pipe to both legs of the manifold assembly. The manifold pipe must be supported during this step, or it could fall and damage the furnace or cause bodily injury! b.
TROUBLE SHOOTING With LED Indicator Assistance Troubleshooting Make the following visual checks before toubleshooting: 1. Check to see that the power to the furnace and the integrated ignition/blower control board is ON. 2. The manual shutoff valves in the gas line to the furnace must be open 3.
WIRING DIAGRAM 20571201 Issue 0527 Page 27 of 28.
NOTES 20571201 Issue 0527 Page 28 of 28.
An important point after buying a device Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace you will learn all the available features of the product, as well as information on its operation. The information that you get Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace will certainly help you make a decision on the purchase.
If you already are a holder of Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace.
However, one of the most important roles played by the user manual is to help in solving problems with Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Allied Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
