Thermo Products PHCFA072DV4R User Manual



OIL FIRED FURNACE

INSTALLATION AND OPERATION MANUAL

WITH USERS INFORMATION SECTION

MODEL:

OHCFA072DV4R

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 VICINITY OF THIS OR ANY OTHER APPLIANCE.

WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE, OR MAINTENANCE CAN CAUSE INJURY OR PROPERTY DAMAGE. REFER TO THIS MANUAL. FOR ASSISTANCE OR ADDITIONAL INFORMATION CONSULT A QUALIFIED INSTALLER, OR SERVICE AGENCY.

PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITI AL FIRING, AND BEFORE PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE USER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL.

THERMO PRODUCTS, LLC.

PO BOX 217

NORTH JUDSON, IN 46366

PHONE: (574) 896-2133

MO-490 ECN 5095-PC 131030 Made IN USA

SECTION PAGE I. SAFETY SECTION 1

A. CODES AND CLEARANCES 3

II. GENERAL INSTRUCTIONS 5

A. VENTING 5 B. INSTALLATION OF VENTOR 7 C. CONDENSATE DRAIN LINE CONNECTION 10 D. DUCT WORK/AIR CONDITIONING 11 E. AIR FILTER MOUNTED EXTERNAL TO FURNACE 12 F. LIMIT POSITION AND LOCATION 14 G. BURNER INSTALLATION 14 H. BURNER SPECIFICATIONS AND APPLICATIONS 14 I. OILTANK AND PIPING 15 J. ELECTRICAL WIRIING 17 L. BLOWER MOTOR SPEED SELECTION 19 M. BLOWER CONTROLLER INFORMATION FOR ECM MOTOR 21 N. STARTUP PROCEDURES 25

III. USERS INFORMATION SECTION 31

A. OIL SUPPLY 31 B. INSPECTION AREAS 31 C. STARTING THE BURNER 31

D. FILTER CLEANING AND LOCATION 31 IV. INSTALLER'S INSTRUCTIONS TO USER 32 V. DEALER MAINTENANCE 33

A. GENERAL INSPEC TION 33

B. HEAT EXCHANGER CLEANING INSTRUCTIONS 34

D. ELECTRICAL S YST EM 37

E. SUPPLY/RETURN AIR BLOWER 37

F. SUPPLY/RETURN AIR FILTER 37

G. EXTENDED APP L IAN C E SHU T D OWN 38 VI. HOMEOWNER/USER INFORMATION AND ROUTINE MAINTENANCE 40 VII. TROUBLESHOOTING 42

VIII. SEQUENCE OF OPERATIONS FLOW CHART 43

IX. TROUBLE SHOOTING FLOW CHART 45 APPENDIX – A

REPLACEMENT PARTS LIST 49 APPENDIX – B

WIRING DIAGRAMS 52

Model Number Digit

1 2 3 4 5 6 7 8 9

Fuel

Configuration Heat Exchanger

Identifier

Flue

Feature Capacity

Capacity

Capacity Blower Type Clg Airflow Cap.

Clg Airflow Cap.

Burner

Oil Furnace Model Nomenclature Example Model Numbers

O H C F A 0 7 2 D V 4

O = Oil

H = Highboy D = Downflow

C = Heat Exchanger Identifier

F = Front

R = Rear

A = Single Stage

Heating Capacity MBTUH (000's) with factory installed nozzle

0 7 2

D = Direct Drive

Clg. Airflow: Example = 48MBTUH = 4 tons @ 400cfm/ton

4 8

Clg. Airflow Variable Speed (ECM) V4 = 4tons

V 4

R = Riello



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.

WARNING AND CAUTIONS:

WARNING: This furnace is not to be used as a construction heater. See Page 3

WARNING: 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 these safety controls with a control that is not approved, or is incompatible, may result in personal injury, substantial property damage or death. See Page 14

WARNING: THE HEAT EXCHANGER MUST BE CLE ANED BY A QUALIFIED

SERVICE PERSON. See Page 34

CAUTION: DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF! See Page 31

WARNING: The area around the furnace should be kept free and clear of

combustible liquids and material, especially papers and rags. See Page 31

WARNING: NEVER burn garbage or refuse in your furnace. Never try to ignite

oil by tossing burning papers or other material into your furnace. See Page 31

WARNING: Thermo Products oil furnaces are designed to burn No. 1 or No. 2 distillate fuel oil. NEVER USE GASOLINE OR A MIXTURE OF OIL AND GASOLINE. See Page 31

CAUTION: DO NOT ATTEMPT TO START THE BURNER WHEN:

1. Excess oil has accumulated,

2. The furnace is full of vapors

3. The combustion chamber is very hot. IF ONE OR MORE OF THESE CONDITIONS EXIST, CONTACT A QUALIFIED SERVICE PERSON. See Page 31

WARNING: DO NOT START BURNER UNLESS BLOWER DOOR IS SECURED IN PLACE.

.FOR YOUR SAFETY: DO NOT STORE OR USE GASOLINE OR OTHER

FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.



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.

3. Inform the user of all pertinent warnings and precautions concerning this appliance.

WARNING: This unit is not to be used for temporary heating of buildings, or structures, un d er

construction. Construction dust may enter the appliance or the duct system and cause a fire hazard.

Certain chemicals used during construction when burned, form corrosive condensate that can substantially reduce the life of the heating system heat exchanger.

This appliance is shipped completely assembled and internally wired. All electrical wiring has been factory installed and inspected. At the time of installation, the unit will require connection to electric power, fuel oil supply, and supply and return air ductwork. In the event of a shortage of parts or damage, contact Thermo Pride office.

This unit uses a fan-assisted combustion system, consisting of a pressure atomizing, oil burner and combustion air blower, used to push the products of combustion through the heat exchanger system. After installation, the fur nace and duct system must be adjuste d to obtain a temperature rise of 50°F to 80°F through the u nit. (Refer to the rating label located on side panel insi de the burner compartment) . The installation mus t conf orm with local cod es or , in the absenc e of local c odes , with the St andard f or the Installation of Oil-Burni ng Equipm ent, NFPA 31 -1997, or the latest editio n, and to these instr uctions. T he installation must also comply with CSA B139 for recommended installation practices where applicable.

A. CODES AND CLEARANCES:

The following items must be considered when choosing the size and location of the unit.

1. All local codes and/or regulations take precedence over the instructions in this manual and

should be followed accordingly. In the absence of local codes, installation must conform to these instructions and the guidelines of the National Fire Protection Association (NFPA). Two applicable NFPA installation codes are the National Electrical Code, ANSI/NFPA 70-1999, and Standard for the Installation of Oil-B urni ng E qui pment, NFPA 31-1997. The latest editions of these codes should be consulted.

2. The selection of a heating unit should be based on a rate of heat loss calculation for the residence

according to the manuals provided by the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE). The heating capacity of the unit proposed for installation should meet or slightly exceed the rate of heat loss for the residence. Over sizing should not exceed 25% of the heat loss calculation.

3. When installed, this unit should be level. If possible, it should be installed in a central location, with

respect to outlet registers of the supply air ductwork.

4. A furnace installed in a residential garage must be installed so the burner and ignition source are

located higher than 18 inches above the floor. The furnace must also be located or protected to avoid physical damage by vehicles.

5. Definitions of "combustible" and "non-combustible" materials as presented in the latest edition of the

National Fuel Gas Code, ANSI Z223.1/NFPA 70, are as follows:

a. Combustible material:

“...materials made of or surfaced with wood, compressed paper, plant fibers, or other materials that are capable of being ignited and burned. Such materials shall be considered combustible even though flame proofed, fire-retardant treated, or plastered.”

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 fo llow these guidelines can cause improper and unsafe operation of this appliance. Unsafe operation can result in substantial property damage, severe personal inju ry , or death.

1. This appliance shall be used with only the type of fuel oil for which it is approved. Refer to the

appliance-rating label for the required type of fuel.

2. This appliance is an oil-fired furnace designed for installation on non-combustible materials.

3. Ensure that adequate combustion and ventilation air is available to the unit.

4. The airflow resistance of the duct system attached to this appliance must fall within the allowable

external static pressure range for this unit. Refer to the Airflow Require ments and Sizing of Ductwork section of this manual.

5. Make sure supply and return air ducts are completely sealed to the appliance casing. Refer to the

Airflow Requirements and Sizing of Ductwork section of this manual.

Table 1: MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS

TYPE OF UNIT

Highboy

FROM

MODEL NO.

SIDES OF

FRONT

FURNACE

OHCFA072DV4R 0” Note

TOP & SIDES OF PLENUM

FROM THE FLUE/VENT

REAR

1” 0” 0”

Note: 1 OHC front clearance 6” for Closet, 24” for Alcove.

The minimum clearances listed in the prec eding table are f or fire protection. C learance for servici ng the front of the furnace should be at least 24 inches.

NOTE: The OHC furnace is approved for closet install ation.

II. GENERAL INSTRUCTIONS A. VENTING:

The OHC furnace venting system must be installed by a qualified service person in accordance with local installation codes and these instructions. In the absence of applicable local codes, conform to the National Fuel Gas Code, NFPA 54/ANSI Z223.1 or latest edition.

Installation shall, at least, conform to the following requirements.

1. The exhaust vent/combustion air intake termination specified by Thermo Products, in this manual, shall be used.

2. All plastic pipe and pipefittings sourced to complete the exhaust vent and air intake systems shall be constructed of rigid PVC (polyvinyl chloride) plastic. All components shall have a wall thickness equivalent to Schedule 40 series materials.

In addition, all sourced PVC components shall be listed by a nationally recognized testing agency (e.g. NSF, UL, etc.) as conforming to one (1) or more of the following design standard.

PVC Pipe Designation Design Standard DWV ( Drain-Waste-Vent) ASTM-D2665 Schedule 40 ASTM-D1785

3. The exhaust vent pipe and combustion air pipe shall be at least as large as the exhaust vent/ air intake pipe specified by Thermo Products. Size reduction is never permissible. The required exhaust vent/ air intake pipe size is 3”.

4. The furnace model series OHC shall not be common vented with any other appliance, including those burning solid fuels.

5. All horizontal runs of exhaust vent pipe shall slope upward at least ¼ inch per foot from the outlet of the furnace to the venter connection. This slope will permit proper drainage of the condensate.

6. The exhaust vent pipe shall be supported at every joint ( no more than 4-feet between supports) to prevent pipe blockage due to condensate trapped at a local low point, or sag, in the vent system.

7. The maximum permissible length of piping (consisting of a combination of straight pipe and a corresponding number of elbows) permitted is: (Each elbow equals 5 ‘ of straight pipe).

• 55 equivalent feet, for the exhaust vent system,( eg. 25’ of straight pipe & 6 elbows)

65 equivalent feet, for the combustion air intake system, (eg. 35’ of straight pipe &

•

5 elbows).

8. When counting pipe elbows, all e lbo ws used in the exh aust vent or combustion air intake systems must be considered. This includes all elbows, or equivalent pipefittings, used inside the furnace jacket. Allow 5’ for each elbow. Note: Two (2), 45

elbows can be substituted for one (1), 900 elbow.

Care should be taken to design the shortest possible intake and exhaust systems. Each system should contain as few elbows as possible to insure the satisfactory operation of the furnace. However, system length should never be less than 8 ft of pipe with two (2), 90 deg. el b o ws. For best overall operation of the combustion system, we recommend the actual equivalent lengths for both the constructed intake and the exhaust systems have approximately the same value.

9. The furnace comes with two 3” street elbows. The first street el shall be affixed to the secondary outlet collar either for left or right hand venting direction. First slide the black radiator hose (parts bag) over the metal exhaust collar. Next, slide 2 band clamps over the radiator hose. Then insert the PVC street el into the collar making sure to push the elbow all the way in until it stops. Finally the band clamps can be positioned and tightened. If you are venting left or right, simply continue venting with 3” PVC making sure to seal all connections. If you desire to vent thru the top right of the cabinet, utilize the second street el and line it up accordingly. (See Figure 1)

Fig-1

10. Use a saw designed to cut thermoplastic pipe. All cuts should be made at right angles to the pipe wall. Smooth jagged edges and remove all burrs and strings. Clean all pipe surfaces at connections using a fine abrasive material or approved PVC cleaner (primer). Secure all pipe joints using suitable permanent PVC pipe solvent cement. Joints are NOT to be made by simply gluing raw edges of butted together vent pipe.

Notice: Piping joints inside the fu rnace vestibule should be sealed with si licone caulk, rather than pipe cement, to allow for disassemble and removal of piping, if necessary, during maintenance.

Notice: Use silicone caulk to seal the p ipe to the metal air intake collar on the burner, and then secure with a sheet metal screw.

11. Vent connections shall be visually checked for leakage.

12. Vent pipe passing through an unheated space shall be insulated with 1-inch thick, foil-faced

fiberglass insulation, or equivalent, to prevent freezing of condensate within the pipe.

13. No clearance is required from the outer surface of the thermoplastic piping to combustible materials for fire hazard prevention. No clearance is required from the outer surface of the ventor assembly either.

14. When attaching the 3” PVC to the burner combustion air inlet collar, first apply a bead of RTV sealant to the burner inlet collar only to ensure an airtight seal. Next, affix the PVC to the collar with a ¾ x #8 sheet metal screw. This can be driven right into the collar and may protrude into the airway.

B. INSTALLATION OF VENTOR:

Fig-2

NOTICE: Ventor assemb ly must be installed so that it is level. If unit is not level, condensate will leak in to ventor box thru inducer and potentially freeze.

1. The OHC must be installed with the side-wall ventor/ blower assembly. Do Not attempt to operate the OHC without the ventor assembly as this could result in damage to the appliance or home.

2. No clearance is required from the outer surface of the ventor assembly to combustible materials for fire hazard prevention.

3. The ventor is designed to fit in between the joist space of 16 O.C.

4. Maximum wall thickness for the ventor assembly is 12”.

Fig-3

5. Remove vent system components from box and inspect for damage. If the carton has been crushed or mutilated, check components very carefully for damage. DO NOT install if any damage is apparent.

6. Remove the vent tee from the vent pipe. Set the tee aside for now. Remove the exterior plate also.

7. See Fig. 3 for vent terminal location. As a general rule, location of the termination of the venting system should be installed in accordance with the National Fuel Gas Code, ANSI Z223.1, manufacturer’s recommendations, and/or local codes that are applicable. Refer to the following requirements or See Fig. 3 for typical locations.

A. The exit termination of the draft system shall not be less than 7’ above grade when located adjacent to public walkways.

B. The venting system shall terminate at least 3’ above any forced air inlet located within 10’ horizontally.

C. The venting system shall terminate at least 4’ horizon tally from, or 1’ above an y door, window or gravity air inlet into the building.

D. The vent termination sh all be located at least 12” from any opening throug h which vented gases could enter the building.

E. The vent termination point shall not be installed closer than 3’ from an inside corner of an L-shaped structure.

F. The vent termination should not be mounted directly above, or within 4’ horizontally from an oil tank vent or gas meter.

G. The bottom of the vent tee outlet shall be located at least 12” above finished grade.

8. After determining the location of the venting system termination point (See Diagram A), cut a hole in the wall 7” x 7”.

9. Mount the ventor assembly through the wall opening. Fasten the exterior trim plate to the ventor body with the provided screws and a bead of silicone sealant. Then secure the trim plate to the outside wall with silicone sealant and the appropriate fasteners. Install the 4” PVC Tee as shown in Fig. 2 using silicone sealant and a sheet metal screw to secure.

10. Use plumbers strapping or equivalent means to support the ventor main body. When supporting the main body, care must be taken to ensure the unit is level.

11. The 25” cable provided with the ventor connects power from the furnace to the ventor blower and pressure switches. The molex connection plugs in to the ventor assembly connection, (See Fig. 2). The other end is connected to the furnace plug. The cable should be securely supported.

12. If local codes require that the cable be run through a conduit, remove the molex end with a molex pin removal tool or equivalent. Care should be taken to not damage the pins. Run the cable through the conduit and then replace the molex plug.

13. Connect the 3” PVC exhaust pipe to the ventor exhaust connection with a 3” coupling. Use silicone sealant to seal and a sheet metal screw to secure.

14. Connect the 3” PVC combustion air pipe to the ventor opening with 3” pipe. Use silicone sealant and a sheet metal screw to secure.

C. Condensate Drain Line Connections:

Fig-4

1. The trap/blocked drain switch assembly comes pre-mounted to the underside of blower pan just below the secondary drain port on the right side of the furnace. Prior to installing the drain, the PVC elbow must be sealed to the plastic trap with silicone and then the spring clamp applied. This positioning of the elbow can be turned to right for exiting the right side casing or rotated 180 exit the left side of the furnace. In either case, secure the desired length of ½” PVC to exit the drain line hole in the appropriate side casing. The knock-out must be removed first and then the grommet included in the parts bag must be used to seal the PVC to the side casing.

and

Notice: It must be noted that the condensate drain line cannot exit the furnace on the same side as

the filter rack due to interference.

2. Plan, source, and install a condensate drain line using ½ diameter PVC (polyvinyl chloride) thermoplastic pipe and pipefittings. Route the line in the shortest possible manner to reach a nearby drain. Secure all joints using PVC cement. For gravity drainage, the condensate drain line must maintain a minimum ¼ inch per foot downward slope toward drain. The drain line must be watertight, supported and secured such that it cannot be easily moved.

Notice: If an air conditioning condensate drain line is combined with the furnace condensate drain line,

the air conditioning evaporator coil must have a separate trap installed ahead of the connection joint.

3. The OHC furnace is equipped with a blocked drain switch to prevent the furnace from continued operation in the event of a blocked or slow draining drain. This switch is wired in series with the T & T circuit (see wire diagram page 54 for details) and will open if the water level gets too high. This is non adjustable and cannot be by-passed.

4. A condensate pump may be required when:

• a suitable drain is not present,

• the drain is above the trap outlet level on the furnace, or

• the drain line cannot be sloped downward its full length to the drain.

If gravity drainage of the condensate from the furnace to a drain is impractical for any of these reasons, a condensate pump (part #350225) is available from Thermo Products. Follow the pump manufacturer’s instructions for proper installation.

CAUTION: Continual exposure to condensate may injure plants and damage certain building

materials, including metal, wood, stone, and concrete.

Flue gas condensate is slightly acidic with a pH of about 3.5. (A pH level of 7.0 is considered neutral.

Carbonated cola drinks with a pH of 3.1 are actually slightly more acidic than condensate.) If local codes require an acid neutralizing kit, a kit is available from Thermo Products under part no. 320095.

Follow the instructions enclosed with the neutralizing kit for proper installation.

6. The condensate piping in the furnace and the drain system should be flushed out at the start of every heating season. This will ensure trouble free operation and will keep the acidity level well above a pH of 3.4, i. e. more towards neutral.

To flush the condensate drain system, follow these steps. a. Turn off electrical power to the furnace at the disconnecting switch and adjust the room thermostat

to “OFF”, or to the lowest temperature setting. b Flush the drain system by removing the drain hose from the secondary heat exchanger coil drain

nipple and running tap water into the open end of the tubing. Run at least a quart of water through the drain system or more, until the water leaving the drain system is clear and colorless in color and free of any particulate matter.

c Replace the drain tubing by pushing it firmly onto the nipple. Make sure the spring-type hose clamp is returned to the original position to prevent leaks.

d. If any of the electrical controls are inadvertently wetted during the flushing process, dry them with a soft cloth and wait 24 hours before operating the furnace.

e. Adjust the room thermostat to the “HEAT” position, or to the desired temperature, and restore electrical power to the furnace.

D. DUCT WORK/AIR CONDITIONING:

Design and installation of the duct system should follow the current guidelines of the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE). Refer to the Residential Duct Systems, Manual D, from the ACCA, and the ASHRAE Handbook Fundamentals volume, from the ASHRAE, for recommended practices in the duct system design and installation. To obtain copies of these publications for a fee, contact the ACCA and the ASHRAE, at the addresses given in Appendix A of this manual.

All furnaces are tested over a range of external static pressure that simulates the airflow resistance of the ductwork, fittings, and diffusers connected to the furnace for a typical (average) duct system. The furnace

blower and blower motor have been selected to work successfully against the following range of duct system resistance.

Recommended range of duct system resistance for all models: 0.2 to 0.5 in. W. G. external static pressure.

Due to the need to maintain an adequate supply of combustion and ventilation air, the furnace shall not be installed in small room without return air duct system. A duct the full size of the furnace return aid opening shall extend to a location outside the furnace room.

If the furnace is used in connection with summer air conditioning (cooling), the furnace should be installed in parallel with, or on the upstream side of, the evaporator coil to avoid water vapor condensation in the furnace heat exchanger. If the cooling unit is installed in a parallel flow arrangement, dampers (or other means used to control airflow) should be provided to prevent chilled air from entering the furnace. If such damper is manually operated, it must be equipped with a means to prevent operation if either unit, unless the damper is placed in either the full heat or full cool position.

NOTICE: Return air grilles and supply r egisters in the air distribution system should n ever be obstructed.

The duct system shall be designed for the maximum CFM requirements of the installation whether it is for heating of cooling. Two common rules are as follows: 1.) 400 CFM/ton cooling

2.) 14 CFM/1000 BTU’S heating for 55

-850 Temp. Rise. The most common location for the

A-shaped coil (A style) is shown in Fig. 5.

Fig-5: Furnace with coil cabinet

NOTICE: The minimum coil pan clearance for a sectional or drum type heat exchanger is three inches unless specified otherwise by the individual coil manufacturer.

E. Air Filter Mounted External to Furnace:

On highboy furnaces, it is necessary to cut the return air opening in the side, rear casing or base, depending upon the needs of the specific installation. The filter rack provided with the furnace, refer to Fig. 6, can serve as a template to scribe a mark for the return air opening on the casing. Place the filter rack on a side casing approximately one inch up from the bottom of the furnace and centered from side to side. Place the securing flange against the casing when locating the return air opening. For your convenience, (3) locator knockouts have been placed at the proper locations on both the left and right side casings. Cut the opening to the O. D. of the knock-outs.

Maximum (ft/min)

Model Number

*Thermo Products

Now the filter rack can be anchored to the furnace with screws or pop-rivets through the securing flange of the filter rack. Connect the return a ir plen um to the f ilter rac k and sli de the f ilter into p lace. Dim ensions for adapti ng the return air plenum to the filter rack are provided (See Fig. 6).

Note: Filter rack and condensate drain must be on separate sides of the furnace.

Fig-6 A typical filter rack and dimensions for the OHC 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 than Thermo Pride filter racks is selected for retention of the filter and/or use of a different filter type is desired, refer to Table 2 below for minimum sizing guidelines for selecting filter for the unit.

Filter Type

Supplied

Air Velocity

600

OHC*

384 in

Permanent

Standard

500

Permanent

Disposable 300

461 in

768 in

Table 2: 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.



THERMO

RIELLO

LENGTH

MAXIMUM

SHIPPED

OIL

F. LIMIT POSITION AND LOCATION:

WARNING: The predeterm ined limit locations on all of the Ther mo Pride oil f ired furnaces have b een

tested and approved b y Thermo Products, LLC. An y attempt to relocate these saf ety controls or replace these safety controls with a control that is not approved, or is incompatibl e, may result in p ersonal injur y, substantial property damage or death.

G. BURNER INSTALLATION:

NOTICE: This furnace comes with a Riello BF3 burner preinstalled from the factory. If there is a need to

remove the burner prior to installation or during service, the following explains how the burner is inserted and mounted.

The oil burner is mounted on three stud mounting bolts on the mounting plate covering the opening in the front of the heat exchanger. This unit is designed with a pre-positioned chamber. There is no insertion adjustment necessary. The unit requires only the mounting of the burner. Insertion is pre-determined. The top panel is removable by taking out the four screws for easy access to the burner and the piping. Replace this panel prior to operating the furnace.

Fig-7

H. BURNER SPECIFICATIONS AND APPLICATIONS:

The BF3 Riello flame retention oil burner is the only oil bur n er th at can be used on the OHC.

PRIDE’S

FURNACE MODEL

OHCFA072DV4R C8511373 380789 BF3-4.5”

BURNER SPEC NO.

AMULETTE

BURNER MODEL & TUBE

Table 3: Riello burner specifications

NOZZLE SIZE**

0.50X60° H 0.50X60° H

NOZZLE SIZE

PUMP PRESSURE (PSIG)

145

+ 38 hidden pages