OUTDOOR COMBINATION OIL-FIRED FURNACE AND AIR CONDITIONING UNIT MODEL OPB (24,30,36)- 80 INSTALLATION AND SERVICE MANUAL : If the information in this manual 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. − WHAT TO DO IF YOU FIND AN OIL LEAK: • • • Do not try to light any appliance. Immediately call your oil supplier.
All installations and services must be performed by qualified service personnel. Contents SECTION PAGE I. SAFETY INFORMATION .............................…………………………………….3 II. GENERAL INSTRUCTIONS ...........................................………………….…..9 III. GENERAL INSTALLATION .....................................................………………. 9 A. Codes and Clearances .......................................................……………. 10 B. Selection of Installation Location .....................................
All installations and services must be performed by qualified service personnel. Contents SECTION PAGE VI. DEALER MAINTENANCE ................................................................ ……... 45 A. General Inspection ...................................................................... ……... 45 B. Heat Exchanger ........................................................................………. 46 1. Disassembly to Access Heat Exchanger ...............................……… 46 2. Heat Exchanger Reassembly...
All installations and services must be performed by qualified service personnel. I. SAFETY INFORMATION This page and the following page contain reproductions of the various instructions and warning labels placed on the Thermo Pride oil-fired appliances. Please read and comply with the contents of these labels.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. The following warnings and cautions are found throughout the Thermo Pride Model OPB Installation and Service Manual. Please read and comply with the statements below. : IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
All installations and services must be performed by qualified service personnel. : Waterproof type connectors must be used when connecting electrical power and control wiring to the unit to prevent moisture from being drawn into the unit during operation. : Refrigerant is under pressure. Guard against refrigerant spraying into the face or on skin. Always wear protective equipment, i.e. safety glasses or goggles and gloves when working with refrigerant.
All installations and services must be performed by qualified service personnel. : For initial start-up of the appliance after installation, it may be necessary to purge the air out of the oil line. A qualified heating contractor should do this. : If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. : Do not run the oil pump dry for more than five minutes, as irreparable damage may result.
All installations and services must be performed by qualified service personnel. : 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 substantial property damage, severe personal injury, or death. 1. This appliance shall be used with only the type of fuel oil for which it is approved.
All installations and services must be performed by qualified service personnel. II. GENERAL INSTRUCTIONS 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.
All installations and services must be performed by qualified service personnel. 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).
All installations and services must be performed by qualified service personnel. 5. Table 1 lists the required minimum clearances to combustible surfaces from the outer surfaces of the appliance. Table 1: Minimum Clearances to Combustible Materials Model No. OPB Top (in.) Side (in.) - 3 Rear Front (in.) (in.) 3 3 Bottom (in.) 0 Vent Terminal (in.) 3 The minimum clearances listed in Table 1 are for fire protection purposes only.
All installations and services must be performed by qualified service personnel. The unit is manufactured with runner supports that raise the unit, about 1.25 inches above the mounting base, allowing air circulation beneath the metal surfaces. This clearance helps to promote air circulation under the base that allows the unit to be mounted on combustible materials. This clearance also helps to reduce metal corrosion caused by a buildup of moisture under the appliance. 3.
All installations and services must be performed by qualified service personnel. For proper and safe operation of this appliance, ensure that adequate clearances around air openings into the burner compartment and the condenser coil area are maintained. These openings are not to be blocked, or restricted, in any manner. 5. Measures should be taken to prevent the entry of corrosive chemicals or vapors to the combustion and ventilation air supply.
All installations and services must be performed by qualified service personnel. In addition, long term exposure of building materials to combustion products may cause discoloration of material surfaces and corrosion or degradation of materials. The preferred installation location will allow combustion products to freely escape the immediate area of the appliance and rapidly disperse into the atmosphere, without being drawn back into the appliance or a nearby structure.
All installations and services must be performed by qualified service personnel. Figure 3: Installation of a Condensate Drainage Line on the Evaporator Coil Condensate from the evaporator is non-corrosive and may be disposed of in any appropriate manner. The drain connection should be sealed at the appliance housing to prevent air leakage from the supply air system. Pipe sealant should be used sparingly on all male pipe threads. Always consult and conform to the requirements of local plumbing codes. E.
All installations and services must be performed by qualified service personnel. 5. A readily accessible, design-certified, manual oil shutoff valve, with a nondisplaceable rotor member, shall be installed in the fuel oil supply piping within 6 feet of the appliance. 6. A pipe union, or flanged connection, shall be provided downstream from the manual oil shutoff valve to permit removal of the appliance oil pump.
All installations and services must be performed by qualified service personnel. When the oil tank is located below the level of the burner, it is necessary to “lift” the oil to the burner. A return line should be connected between the fuel pump and tank. This requires insertion of the "by-pass" plug into the fuel pump. If the lift (vertical distance between the supply line inlet and the burner) exceeds approximately 10 feet, a two-stage pump should be installed with a return line.
All installations and services must be performed by qualified service personnel. Table 2: Burner Specifications and High and Low Fire Heating Performance Oil Oil Pump Heat Input Heating Flowrate @ Pressure Rate* Mode Nozzle (PSIG) (BTUH) (GPH) High Fire 130 Low Fire 120 2 0.75 1 0.6 Heat Output Rate** (BTUH) 105,000 85,000 85,000 67,000 Burner Model Number Air Tube Combination Nozzle Type Simplex, 80 AFG-TP1502 AF42 BNHSSS deg.
All installations and services must be performed by qualified service personnel. H. 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 0.4 in. W.G.
All installations and services must be performed by qualified service personnel. 6. The following method can be used to size ductwork when air velocities are low to moderate. a. Using a floor view of the residence, determine, or layout, the locations of the supply registers and the return air grills. (Generally, supply registers should be located close to sources of heat loss, i.e. windows and doors, around the perimeter of the building.
All installations and services must be performed by qualified service personnel. h. The resistance of the take-off and the outlet register (or return grill) should then be summed together to determine the total pressure drop for each branch. This value should be close to the assumed value for the pressure drop of the system. If it is not close, then flowrates for each branch must be adjusted, or the design of the duct system must be altered, to give the proper pressure drops.
All installations and services must be performed by qualified service personnel. 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.
All installations and services must be performed by qualified service personnel. 8. As a final step in the installation, the appliance must be adjusted to deliver a temperature rise within the range of 50° to 80°F. Adjust the blower motor speed to obtain a temperature rise within the acceptable range. The required blower speed will depend on the airflow resistance of a supply and return air duct systems. I. Air Filters 1.
All installations and services must be performed by qualified service personnel. J. Electrical Wiring : This appliance must be grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70-1999, or the latest edition. : Waterproof type connectors must be used when connecting electrical power and control wiring to the unit to prevent moisture from being drawn into the unit during operation.
All installations and services must be performed by qualified service personnel. Typically, control wiring between the outdoor appliance and the indoor thermostat, and if used, electronic air cleaner or humidifier, will be required. Field wiring of control circuits should consist of copper conductors rated for at least 240 VAC with an insulation temperature rating conforming to Type T wire, 35°C temperature rise.
All installations and services must be performed by qualified service personnel. 3. All wiring sizes must comply with local codes or the National Electrical Code. To minimize voltage drop to the appliance, the next larger size wire should be used when long wiring runs, in excess of 100 ft., are employed. Refer to the wiring diagrams when wiring or servicing. NOTICE: Proper operation of the heating section of this unit depends upon correctly connecting the electrical power source.
All installations and services must be performed by qualified service personnel. Figure 4: The Fan Control Module NOTICE: It is important to confirm that the operating voltage of the humidifier or EAC being installed matches the output of this control. If not, a field supplied relay or transformer may be necessary to provide the proper control and supply voltage for the accessory being installed. Refer to the manufacturer’s instructions for the humidifier or EAC for additional information.
All installations and services must be performed by qualified service personnel. 2. Thermostat Anticipator Setting Proper control of the indoor air temperature can only be achieved if the thermostat is calibrated to the heating and/or cooling cycle. Calibration will help to produce a more constant indoor temperature by adjusting the length of the heating/cooling cycle to fit the application. A vital consideration of this calibration is related to the thermostat heat anticipator.
All installations and services must be performed by qualified service personnel. Preferred method of adjustment: Using an analog ammeter on the lowest scale, such as an Amp Check, connect the meter across terminals “R” and “W” on the sub-base (“RH” & “W” on an isolating thermostat sub-base). If the reading is too low to move the needle on to the measurement scale of the instrument, proceed as follows. i.
All installations and services must be performed by qualified service personnel. Or in this case, _2.5 A. 10 = 0.25 A. (Anticipator Setting) iv. Adjust the position of the anticipator indicator to match the calculated ammeter setting. If a slightly longer cycle is desired, the pointer should be moved to a higher setting. Slightly shorter cycles can be achieved by moving to a lower setting. v. Remove the meter jumper wire and reconnect the thermostat.
All installations and services must be performed by qualified service personnel. IV. STARTUP PROCEDURES A. Heating System 1. Initial Startup: : Turn off power to furnace. Before the oil piping system is placed into service, it must have been leak tested by a qualified heating contractor. : For initial start-up of the appliance after installation, it may be necessary to purge the air out of the oil line. A qualified heating contractor should do this. Review the following items before the initial startup.
All installations and services must be performed by qualified service personnel. For Your Safety Read Before Operating: : If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. • This appliance does not have a pilot light. It is equipped with an ignition system that automatically lights the burner. Do not attempt to light the burner by hand. • Do not use this appliance if any part has been under water.
All installations and services must be performed by qualified service personnel. ii. If service is to be performed, turn off the electrical power to the appliance. iii. Turn the manual oil shutoff valve to the “OFF” position. 2. Adjustment of Burner Combustion: : Maximum gross stack temperature must not exceed 550°F (288°C) under any circumstances. : Do not run the oil pump dry for more than five minutes, as irreparable damage may result.
All installations and services must be performed by qualified service personnel. f. Open the inspection cover on the upper mounting plate above the burner. g. Turn the disconnecting switch to “ON”. h. Prime the pump to remove air in the oil supply line. i. When ignition is established, make a preliminary burner air adjustment to attain a clean combustion flame.
All installations and services must be performed by qualified service personnel. NOTICE: To achieve proper combustion and the efficiencies listed in sales brochures, instruments must be used to secure CO2 or O2 readings. ii. CARBON DIOXIDE (CO2) OR OXYGEN (O2): Take a CO2 sample from flue passageway. It is possible to achieve readings of up to 14% CO2 (or 2% O2 ), but it is better to have a slightly lower CO2 (or higher O2) reading with zero smoke measured.
All installations and services must be performed by qualified service personnel. The supply air temperature should be measured in the supply air trunkline approximately 12 inches downstream of the supply air outlet of the appliance. NOTICE: Minimum temperature rise is 500 F.; maximum temperature rise is 800 F. l. After final adjustments are completed, tighten all screws to fix the positions of the burner air band. m. Check for the presence of oil leaks. Correct any oil leaks found. n.
All installations and services must be performed by qualified service personnel. b. Turn on the fuel oil and cause the appliance to activate the heating section by answering a “call for heat”. NOTICE: It may be necessary to bleed air from the oil line before the burner can be fired. c. Allow the heating section to operate for 10 to 15 minutes. d. Note the oil pressure at the pump. e.
All installations and services must be performed by qualified service personnel. After 15 to 20 minutes of continuous operation, the temperature rise through the furnace must fall within a range of 50° to 80° F. If the outlet or supply duct temperature is too high, check to make sure the return air filter is clean, the return air registers are free from obstruction, the outlet registers are properly adjusted and clear, and the supply and return air ducts are open.
All installations and services must be performed by qualified service personnel. c. Make certain the thermostat will automatically start and stop the appliance. NOTICE: Heat exchanger oil will burn off on initial firing creating an unpleasant odor. To prevent this odor from occurring more than once, it is suggested the heating section be allowed to run for 30 minutes, or until odor has dissipated.
All installations and services must be performed by qualified service personnel. B. Cooling Section 1. Initial Startup: : Refrigerant is under pressure. Guard against refrigerant spraying into the face or on skin. Always wear protective equipment, i.e. safety glasses or goggles and gloves when working with refrigerant. : Do not under any circumstances heat the refrigerant cylinder with a torch or by any other means other than warm water.
All installations and services must be performed by qualified service personnel. The suction pressure and condenser subcooling are the most significant readings. If a unit is suspected of having a low refrigerant charge, the unit should be recharged using the suction pressure then topped off using subcooling. Any additional refrigerant may cause damage or unintended problems. The pressure/temperature chart on the wiring diagram is to serve only as a guide.
All installations and services must be performed by qualified service personnel. 3. Condenser Subcooling: Before taking subcooling measurements, allow the system to stabilize through continuous operation for at least 15 minutes. To determine subcooling, measure the refrigerant pressure at the liquid line as it leaves the condenser.
All installations and services must be performed by qualified service personnel. 5. Evaporator Superheat: Before taking a superheat measurement allow the system to stabilize for 15 minutes under continuous operation. To measure superheat at the evaporator, a suction pressure reading at the outlet of the evaporator would be desirable.
All installations and services must be performed by qualified service personnel. V. INSTALLER'S INSTRUCTIONS TO USER After completing the installation, the installer shall inform and/or demonstrate to the homeowner: 1. The location of these instructions in the appliance. These instructions must be kept along with instructions for any accessories in the plastic pouch on the inside of the appliance. 2. The location and use of the manual oil shutoff valve and appliance electrical disconnecting device.
All installations and services must be performed by qualified service personnel. VI. DEALER MAINTENANCE SAFETY DURING SERVICING AND INSPECTION : Personal injury or property damage could result from repair or service of this appliance by anyone other than a qualified heating contractor. The user may only perform the activities described in the Homeowner/User Routine Maintenance section of this manual.
All installations and services must be performed by qualified service personnel. excessive wear. Replace it, if required. Check and adjust oil pump pressure, if needed. Refer to Initial Heating System Adjustments section of this manual. 4. Heat Exchanger – Visually inspect the heat exchanger for excessive carbon (soot) build-up. Refer to the Heat Exchanger section of the manual. 5. Oil Filter – Replace the supply line oil filter cartridge with a new filter of the same type and rating.
All installations and services must be performed by qualified service personnel. Figure 9, OPB Heat Exchanger Clean-out Ports and Related Components Remove the clean-out covers. Also, remove the burner compartment cover, the burner, and the burner mounting plate. When removing the clean-out covers, special care must be taken not to damage the gaskets.
All installations and services must be performed by qualified service personnel. With access to the inside of the heat exchanger through the burner area, cleanout openings, and vent terminal connection, it is now possible to use a long, flexible wire brush and an industrial type vacuum cleaner to remove any soot build-up. NOTICE: A one inch (outside diameter) vacuum cleaner hose will fit into the radiator.
All installations and services must be performed by qualified service personnel. 3. Operational Check : Before troubleshooting, familiarize yourself with the start up and check out procedures NOTICE: After reassembling the appliance, check for fuel oil leakage from the supply piping. a. Check proper operation of the ignition system and for proper combustion. b. Observe the main burner flame.
All installations and services must be performed by qualified service personnel. D. Supply/Return Air Blower Check in the blower compartment for dust, dirt, debris, and for the presence of insects. Remove any foreign material. Clean the blower wheel, housing, and compartment of dust and lint with a vacuum. The blower motor has sealed bearings that are permanently lubricated. The blower motor bearings do not require oil or any type of additional lubrication. E.
All installations and services must be performed by qualified service personnel. NOTICE: Remind the homeowner of the importance of monthly filter inspections during operation to ensure maximum operating efficiency. F. Extended Appliance Shutdown : Do not attempt to start burner when: • Primary reset has been engaged more than two times. • Excess oil has accumulated in the combustion chamber or beneath the burner assembly. • The combustion chamber or the heat exchanger is full of fuel vapor.
All installations and services must be performed by qualified service personnel. 6. Open the inspection cover on the upper mounting plate. 7. Turn on the electrical power to start the burner. If the burner does not start, immediately reset the manual overload switch on the motor (if so equipped) and the safety switch of the burner primary control. Bleed air from the fuel oil line as soon as the burner motor starts rotating.
All installations and services must be performed by qualified service personnel. VII. HOMEOWNER/USER INFORMATION AND ROUTINE MAINTENANCE : Never burn garbage or refuse in this appliance. Never try to ignite oil by tossing burning papers or other material into the combustion chamber. : Oil-fired appliances produced by Thermo Products are designed for burning No. 2 distillate (domestic heating) fuel oil. Never use gasoline or a mixture of oil and gasoline.
All installations and services must be performed by qualified service personnel. 4. Check to see if the high temperature limit switch reset button, on the burner motor, has “popped out”. If so, the control has activated. To reactivate the control, depress the reset button. 5. Replace and secure the burner compartment cover. 6. Set the operating mode on the thermostat to “HEATING” and turn the thermostat temperature setting up.
All installations and services must be performed by qualified service personnel. The following maintenance points should be reviewed periodically to assure the heating and cooling systems continue to function properly. : Shut off unit and disconnect the power source before disassembling the unit. : Never operate the appliance without clean air filters in place. : This appliance requires air for combustion, ventilation, and cooling.
All installations and services must be performed by qualified service personnel. ducts for any signs of collapse, holes, or excessive corrosion. Repair or replace components as required. 8. It is advisable to wax the outer surface of the appliance housing yearly to provide the surface finish protection from excessive degradation by sunlight and inclement weather. A good grade of automotive wax should be used to protect the finish.
All installations and services must be performed by qualified service personnel. VIII. TROUBLESHOOTING : Power must be disconnected before servicing. Refer to the appendices of this manual for an electrical schematic, a connection diagram, flowcharts to assist in troubleshooting, product specifications, and a replacement parts list follow for this appliance. A. Heating System: Qualified HVAC and cooling contractors must perform all service.
All installations and services must be performed by qualified service personnel. Number of flashes Cad Cell Resistance (in ohms) Model R7184B 1 ......................................... 0 to 400 2 ......................................... 400 to 800 3 ......................................... 800 to 1600 4 ......................................... 1600 < If it is necessary to troubleshoot the flame sensor independently of the burner primary, the following procedure may be used.
All installations and services must be performed by qualified service personnel. 2. Is the sub-base of the thermostat switched to the “COOL” position? 3. Is the temperature setting on the thermostat low enough to bring the cooling system on? 4. Has the unit stopped cooling, making it necessary to wait several hours before the unit will restart? The fan motor, or compressor, may have shutdown on thermal-overload due to overheating. If this event frequently occurs, call your qualified heating contractor. 5.
All installations and services must be performed by qualified service personnel. IX. REFERENCES 1. International Approval Services-U.S. Inc. and the National Fire Protection Association, 1996, National Fuel Gas Code, ANSI Z223.1-1996/NFPA 54-1996, 6th Ed., pp. 10 & 13. 2. Earley, M.W., Sheehan, J.V., Caloggero, J.M., 1999, National Electrical Code Handbook, 8th Ed., National Fire Protection Assoc., Inc., pp. 142, 143, 256, & 502510. 3.
All installations and services must be performed by qualified service personnel. X. APPENDIX A: SOURCES FOR REFERENCED STANDARDS 1. Air Conditioning Contractors of America 1712 New Hampshire Avenue, NW Washington, D.C. 20009 (202) 483-9370 2. American National Standards Institute, Inc., Attn: Customer Service 11 West 42nd Street New York, New York 10036 (212) 642-4900 3. American Society of Heating, Refrigeration, and Air-Conditioning Engineers, Inc., 1791 Tullie Circle N.E.
All installations and services must be performed by qualified service personnel. XI. APPENDIX B: CALCULATIONS Example 1: Problem: It is desired to install a warm-air furnace w/ an air conditioning evaporator coil at a residence. The net output of the furnace is 100,000 BTU/hr and the evaporator will provide 4 tons of cooling to the space. Estimate the minimum required airflow for the system to operate satisfactorily.
All installations and services must be performed by qualified service personnel. Figure 15: Plan View of a Typical Residence Solution: If certain flowrates are desired, for heating or cooling reasons, or are required, by local codes, those guidelines should be followed. In lieu of other requirements, room floor area can be used to select flowrates for each room. For instance, the floor area of the living room is 400-sq. ft.
All installations and services must be performed by qualified service personnel. This procedure can be repeated to determine the airflow for each room in the residence. The results of these calculations are given in Table 6, below. Table 6: Required Room Air Flowrates Based on Floor Area for Example 2 Room Room Room Air Flowrate per Number of Floor Area Flowrate Register Registers (Sq. Ft.
All installations and services must be performed by qualified service personnel. Therefore, choose a supply system static pressure drop of 0.2 in. W.G. (Then, the return air system will also have a static pressure drop of 0.2 in. W.G.) Furthermore, we will assume that the static pressure drops for all registers in the supply system will be 0.1 in. W.G. This leaves a static pressure drop of only 0.1 in. W.G. for all the ducting between the outlet flange of the appliance to each of the registers.
All installations and services must be performed by qualified service personnel. However, there are two, 90 degree turns in the branch that will cause a large pressure drop, not accounted for in our calculations. To compensate for this drop, we should increase the effective length of the branch. For a 90 degree, mitered elbow, the equivalent straight duct length is given by the following formula, L90 elbow ( ft.) = 65 * D(in.) .
All installations and services must be performed by qualified service personnel. Likewise, the pressure drops for the two remaining segments in this branch can be calculated in the same manner. They are, ΔPF = 0.0129 in. W .G. and ΔPH = 0.00702 in. W .G. . Referring to section (f) and (g) of the method, it is now necessary to resize each of these duct segments for the actual required flowrate while maintaining the pressure drops calculated above.
All installations and services must be performed by qualified service personnel. Using the previous pressure drop equation, the pressure drop through segment “A” is 0.0321 in. W.G. Then, the pressure drop for the “D” and “E” branch is, ΔPE + ΔPD = 0.0321 in. W .G. + 0.0644 in. W .G. + 0.0257 in. W .G. = 0.0643 in. W .G.. The duct diameter required to pass 196 CFM @ 0.0643 in. W.G. pressure drop is, ⎡ 0.00123174 * (17 ) * 1961.82 ⎤ DE = ⎢ ⎥ 0.0643 ⎣ ⎦ 0.2058 = 5.73 in. ≅ 6 in., Including a 6 in.
All installations and services must be performed by qualified service personnel. The pressure drops for the remaining branches of the system must be set. This includes segment “G”; segments “I” and “J”; and segments “K”, “L”, and “M”. To balance the system, the pressure drop for each branch must be approximately equal to the pressure drops of the other branches. For example, segment “G” must equal segments “D”, “E” and “F” combined. Thus, ΔPG = ΔPD + ΔPE + ΔPF .
All installations and services must be performed by qualified service personnel. Example 3: Problem: Refrigerant measurements are made on the cooling system of a typical OPB installation. The suction line pressure, measured at the condenser unit, suction line, charging port, is 135 PSIG. The temperature of the refrigerant (R410A) at the evaporator suction line connection is measured as 55°F.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. Now, the degree of superheat can be calculated. 55°F (Suction line temperature at outlet of evaporator) - 47°F (Saturation temperature for R410A at 68 PSIG) ----------------------8°F = Degree of evaporator superheat. Example 4: Problem: Additional refrigerant measurements are made on the cooling system of our typical OPB installation.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. XII.
All installations and services must be performed by qualified service personnel. XIII. APPENDIX D: SEQUENCE OF OPERATIONS OPB A. SEQUENCE OF OPERATIONS FOR THE HEATING SYSTEM Mode of Operation Standby (At any time the oil valve is not energized) Start Control System Action Continous safe operation check. If flame simulation condition present, system shuts off oil valve,ignitor, and burner motor; activates fast flashing LED. Thermostat calls for heat, contacts close Ignition electrodes spark.
All installations and services must be performed by qualified service personnel. Control System Action Main Burner Operation If ignition attempt is unsuccessful, the ignition control module goes into system lockout. When thermostat is satisfied, contacts open and the oil valve is de-energized. After a 2 minute burner off delay, burner motor is de-energized. The 2 minute delay- to- fan-off period begins.
All installations and services must be performed by qualified service personnel. XIV. APPENDIX E: TROUBLESHOOTING FLOWCHARTS OPB A. SEQUENCE OF OPERATIONS FOR THE HEATING SYSTEM Mode of Operation Standby (At any time the oil valve is not energized) Start Control System Action Continous safe operation check. If flame simulation condition present, system shuts off oil valve,ignitor, and burner motor; activates fast flashing LED. Thermostat calls for heat, contacts close Ignition electrodes spark.
All installations and services must be performed by qualified service personnel. TURN THERMOSTAT TO CALL FOR HEAT DOES THERMOSTAT MAKE CONTACT? No IS ROOM TEMPERATURE BELOW THERMOSTAT SETTING? Yes No No IS ROOM TEMPERATURE TURN T'STAT SETTING ABOVE ROOM TEMPERATURE Yes Yes ALLOW THE ROOM AIR TO COOL CHECK IN PUT POWER, DISCONNECTING SWITCH, AND FUSE(S), IF EQUIPPED.
All installations and services must be performed by qualified service personnel. Yes IS IGNITION ESTABLISHED? No ARE THE ELECTRODES ARCING? IS IGNITION TRANSFORMER CAPABLE OF PRODUCING A 3/4" ARC? (10,000 VAC) No No REPLACE IGNITION TRANSFORMER Yes DETERMINE IF THE ELECTRODES ARE ALIGNED, CONTACT SPRINGS TOUCHING ELECTRODE RODS, & PORCELAIN INSULATORS CLEAN AND UNCRACKED. ADJUST OR REPLACE, AS NECESSARY.
All installations and services must be performed by qualified service personnel. PROPER COMBUSTION ACHIEVED? No IS THE PROBLEM DELAYED IGNITION? Yes IS THE AIR TUBE INSERTION 0-1/4" BACK FROM INSIDE OF REFRACTORY? No CORRECT INSERTION OR AIR TUBE BURNOFF MAY OCCUR.
All installations and services must be performed by qualified service personnel. Yes DOES FURNACE OPERATE WITHOUT CONDENSING? No IS STACK TEMPERATURE No IS BURNER SET AS INDICATED IN ABOVE SECTION? No ADJUST BURNER COMBUSTION TO PRODUCE ZERO SMOKE. No SLOW THE BLOWER SPEED TO RAISE TEMPERATURE RISE. Yes IS THE TEMPERATURE DIFFERENCE BETWEEN SUPPLY Yes Yes Yes INCREASE LENGTH OF BURNER ON CYCLE BY RESETTING BURNER PRIMARY CONTROL DIP SWITCHES FOR A LONGER OFF DELAY. TROUBLE SHOOTING ENDS.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. Notes for Air Conditioning Troubleshooting Guide 1.101.0 Check to see if the contactor has not pulled in. If the coil has not pulled in the contactor, check for 24 VAC to the coil on the contactor. 1.101.1 Check to make sure the control transformer is powering the 115 VAC circuit. 1.101.2 Check for 115 VAC to the control transformer. Check control fuse for 115 VAC supply. 1.101.
All installations and services must be performed by qualified service personnel. 2.101.0 Check to see if the condenser fan motor is excessively hot as to cause the thermal-overload to function. Possible causes for outdoor fan motor to kick off on overload are: 1) 2) 3) 4) 5) 6) Loose wire connections. Excessive current (amp) draw, possibly due to low operating voltage. Bad motor bearings. Excessively dirty coil causing restricted airflow. Excessively hot air being pulled into unit.
All installations and services must be performed by qualified service personnel. 3.101.1 Dirty air filters may restrict the airflow across the evaporator coil resulting in frost on the coil. 3.101.2 Are the duct system and air blower setup to move enough air to have an 18-20 degree F. drop across the coil? 3.101.3 Are there any registers or dampers closed restricting the airflow of the duct system? 3.101.4 If the evaporator coil frosts, this indicates a low charge or insufficient air movement. 3.101.
All installations and services must be performed by qualified service personnel. XV. APPENDIX F: SPECIFICATION SHEETS Model No.: OPB24-80 Heating Performance (using # 2 fuel oil): Input rate (BTUH), Maximum / Minimum : Heating capacity (BTUH), Maximum / Minimum : Design temp. rise (deg. F.) on LOW fan speed: Burner nozzle & oil pressure for max. input rate: Burner nozzle & oil pressure for min.
All installations and services must be performed by qualified service personnel. XVI.
All installations and services must be performed by qualified service personnel.
All installations and services must be performed by qualified service personnel. APPENDIX H: OPB HEATING AND COOLING SYSTEMS TEST FORM Complete this form for each Thermo Pride OPB appliance installed. Read the instruction manual carefully before making tests. Retain this form with appliance. Name: Customer Address: City, State, & Zip Code: Model No.: Serial No.: Appliance AFG-TP1502 Burner Model No.