Summary of the content on the page No. 1
OIL FIRED FURNACE
INSTALLATION AND OPERATION MANUAL
WITH USERS INFORMATION SECTION
MODEL:
OH6FA072D48B OH6FA072DV4B OH8FA119D60B OH8FA119DV5B
OH6FA072D48R OH6FA072DV4R OH8FA119D60R OH8FA119DV5R
OH6FA072D48N OH6FA072DV4N
OH6FX072DV4R
χ WARNING: IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR
LOSS OF LIFE.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE
Summary of the content on the page No. 2
CONTENTS SECTION PAGE I. SAFETY SECTION 1 A. CODES AND CLEARANCES 3 B. MAKE-UP AIR 4 II. GENERAL INSTRUCTIONS 5 A. CHIMNEY 6 B. VENTING 10 C. DRAFT REGULATORS 11 D. DUCT WORK/AIR CONDITIONING 11 E. AIR FILTER(S) 15 F. LIMIT POSITION AND LOCATION 17 G. BURNER INSTALLATION 18 H. BURNER SPECIFICATIONS AND APPLICATIONS 19 I. OILTANK AND PIPING 22 J. OIL FILTER 2
Summary of the content on the page No. 3
Model Number Digit 1 2 3 4 5 6 7 8 9 10 11 12 Oil Furnace Model Nomenclature Example Model Numbers O H 6 F A 0 7 2 D 4 8 B O H 6 F A 0 7 2 D V 4 R O H 8 F A 1 1 9 D 6 0 B O H 8 F A 1 1 9 D V 5R O = Oil O H = Highboy D = Downflow H 6 = Heat Exchanger Size Identifier 6 F = Front F R = Rear R A = Single Stage A X = 2-Stage X Heating Capacity MBTUH (000's) with factory installed nozzle
Summary of the content on the page No. 4
I. SAFETY SECTION This page and the following contains various warnings and cautions found throughout the Oil Furnace Manual. Please read and comply with the statements below. χWARNING AND CAUTIONS: χWARNING: This furnace is not to be used as a construction heater. See Page 3 χWARNING: The predetermined limit locations on all of the Thermo Pride oil fired furnaces have been tested and approved by Thermo Products, LLC. Any attempt to relocate these safety controls or replace the
Summary of the content on the page No. 5
2
Summary of the content on the page No. 6
The entire text of these instructions must be read and understood, before installing the appliance. It is the installer's responsibility to do the following: 1. Inform and demonstrate to the user, the correct operation and maintenance of the appliance, as explained in the Homeowner/User Information and Routine Maintenance section of this manual. 2. Inform the user of the hazards of flammable liquids and vapors and to remove such liquids and vapors from the vicinity of the appliance.
Summary of the content on the page No. 7
b. Non-combustible material: “...material that is not capable of being ignited and burned; such as material consisting entirely of, or a combination of, steel, iron, brick, concrete, slate, asbestos, glass, and plaster.” : Carefully read and thoroughly understand the following guidelines and warnings before continuing with the installation of this appliance. Failure to follow these guidelines can cause improper and unsafe operation of this appliance. Unsafe operation can result in
Summary of the content on the page No. 8
II. GENERAL INSTRUCTIONS - READ BEFORE START OF INSTALLATION 1. The heating output capacity of the furnace proposed for installation should be based on a heat loss calculation made according to the manuals provided by the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE). 2. All local codes and/or regulations take precedence over the instructions in this manual and should be followed ac
Summary of the content on the page No. 9
A. CHIMNEY: The furnace must be connected to an adequate chimney or an approved vent in accordance with these instructions. An adequate chimney is one that is sealed and lined with the capability of producing a (-).04" WC flue draft and having the capacity to handle the amount of stack gases that are introduced into it. A chimney with an internal construction of corrosion resistant tile, stainless steel, or some other material that will withstand flue gas temperatures up to 900°F is re
Summary of the content on the page No. 10
must be used, such as a Class "A" triple wall or insulated metal chimney. A liner will act as an insulator and reduce the stack gas temperature loss. Insulation may be added around the liner for further temperature stability. If the chimney is on the home's exterior or passes through a sizable, unheated area of the building, such as a porch, high ceiling attic, etc., and condensing occurs, the chimney must be insulated around its exterior to help the flue hold its temperature. Also, check
Summary of the content on the page No. 11
Fig. 4: Proper insertion of the vent connector in the chimney. 5. PROPER CHIMNEY BOTTOM LEVEL: In cases where the chimney extends to the basement floor, the draft can usually be improved by filling the base of the chimney with sand to within 12 inches of the vent connector pipe after relocating the clean-out door. (See Fig. 5). Fig. 5: Suggested method to improve chimney draft. 6. TIGHT JOINTS: All joints of the chimney must be tightly sealed. The inside of the chimney should
Summary of the content on the page No. 12
Fig. 6: Suggested method to accommodate vent connector passage through a wall composed of a combustible material. Fig. 7: Alternate constructions that allow reduced clearances to combustible materials. REDUCTION OF CLEARANCES WITH SPECIFIED FORMS OF PROTECTION: Type of protection applied to and covering all surfaces of combustible material within the distance specified as the required clearance with no protection unless otherwise noted, all dimensions in inches, refer to Fig.
Summary of the content on the page No. 13
The vent connector pipe between the furnace and chimney shall be of equal diameter as the flue outlet of the furnace. The vent connector pipe must be made of 24 gauge (or thicker) corrosion-resistant steel. The vent connector pipe should be as short as possible and installed so that it has a continuous rise from the furnace to the chimney. The horizontal length of a connector to a natural draft chimney or vent serving a single appliance shall not be more than 75 percent of the height of th
Summary of the content on the page No. 14
The side wall vent may be installed either through the knock-out on the right or left side casing of the unit or vertically out the top opening of the vestibule. The combustion air inlet can be installed through the either the lower left side casing knockout or the lower right side casing knockout. C. DRAFT REGULATORS: Note: Do not use with Direct Vent application. A draft regulator is supplied with the furnace and should be installed according to the regulator manufacturers r
Summary of the content on the page No. 15
Airflow Requirements and Sizing of Duct Work: The duct system must be sized and installed by a qualified installer or service person, following the design standards of the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE). This furnace has been designed to operate against a maximum external static pressure of 0.5 in. W.G. This is equivalent to 0.1 in. W.G. supply, and 0.1 in. W.G. return, and 0.3 in.
Summary of the content on the page No. 16
the supply and return air systems added together cannot exceed the maximum external static pressure that can be supplied by the appliance blower. f. Determine the required flow rate for each branch of the supply and return air systems. The total airflow rate, by adding the airflow rate of each branch of the supply system, must equal the minimum required airflow rate (refer to part 3, above). Likewise, the airflow rate of each of the branches of the return air system must sum to the req
Summary of the content on the page No. 17
Table 3: Suggested Duct Sizes for Homes, Quiet Offices, Or Similar Installations (Based on a 0.1 in. W.G. static pressure drop per 100 ft. of duct.) 7. The supply and return air ducts, or flexible joints, should be carefully secured and sealed to the appliance housing to prevent air leakage from, or into, the duct system. For best performance, insulate the outside surfaces of the ducts to reduce heat loss from, or heat gain to, the ducts. 8. As a final step in the installation,
Summary of the content on the page No. 18
SIZING THE DUCT WORK FOR A COMBINATION HEATING AND COOLING SYSTEM: Two formulas must be used in determining the CFM requirements of a combustion heating and cooling system. 1. HEATING CFM: HEAT OUTPUT OF FURNACE (BTUH) 1.1 X TR (TEMPERATURE RISE, °F) = HEATING(CFM) EXAMPLES: A. 110,000 BTUH OUTPUT 1.1 X 85°F TR = 1176 CFM FOR HEATING B. 110,000 BTUH OUTPUT 1.1 X 70°F TR = 1429 CFM FOR HEATING 2. COOLING CFM: 400 CFM X COOLING TONNAGE (
Summary of the content on the page No. 19
Connect the return air plenum to the filter rack and slide the filter into place. Dimensions for adapting the return air plenum to the filter rack are provided (See Fig. 10a & 10b). Fig. 10a: A typical filter rack and dimensions for the OH6 furnace. Fig. 10b: A typical filter rack and dimensions for the OH8 furnace. : Failure to comply with minimum filter installation requirements may affect the performance and/or void the warranty on this unit. If a method other
Summary of the content on the page No. 20
Maximum Filter Type Air Velocity Model Number (ft/min) OH6 OH8 *Thermo Products 600 384 in² 480 in² Supplied Permanent Standard 500 461 in² 576 in² Permanent Disposable 300 768 in² 960 in² Table 4: Minimum Required Filter Area (in square inches) * The Thermo Products supplied filter can be cut to size to fit other filter retention systems as long as the minimum size requirement is met. NOTICE: Any internal stiffeners used in the filter must not be removed, although they
