Williamson-Thermoflo PLB-112 LOW-BOY User Manual

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Oil Furnaces

PLB-112 LOW-BOY

KEEP THESE INSTRUCTIONS WITH FURNACE FOR FUTURE REFERENCE.

C US

Hazard definitions

Hazards that will cause severe personal injury, death or substantial property damage.

Hazards that can cause severe personal injury, death or substantial property damage.

INSTALLER – Read all instructions before installing. Read page 2 first. Follow all instructions in proper order to prevent personal injury or death.

• Consider ducting, fuel supply, venting and installation when determining furnace location.

• Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

Do not store or use gasoline or other flammable liquids or vapors near this furnace or any other appliance.

Ventilate house while operating furnace for the first time. Odors may be emitted for a brief period.

Do not alter this furnace in any way. The manufacturer will not be liable for any damage resulting from changes made in the field to the furnace or its components or from improper installation. Failure to comply could result in severe personal injury, death or substantial property damage.

Furnace Manual

Contents

Read this first! ............................................................................ 2

1. Installation.................................................................................. 3

2. Operation ................................................................................. 11

3. Maintenance ............................................................................ 13

4. Checkout procedure................................................................. 14

5. Dimensions and Ratings .......................................................... 16

6. Components and replacement parts........................................ 21

7. Owner’s information ................................................................. 25

Page

Hazards that will or can cause minor personal injury or property damage.

Special instructions on installation, operation or maintenance that are important but not related to personal injury or property damage.

USER – Please read the following. Failure to comply could result in severe personal injury, death or substantial property damage.

• This manual is for the sole use by your qualified heating installer / service technician.

• Please see the Owner’s information only, on the back page of this manual.

• Have the furnace serviced by a qualified service technician, at least once a year.

This manual must only be used by a qualified heating installer / service technician. Furnace and burner must be installed and serviced only by a qualified heating installer / service technician. Failure to comply could result in severe personal injury, death or substantial property damage.

When calling or writing about the furnace – Please indicate furnace model number and serial number from rating label. You may list the serial number and model number in the space provided on the “Installation and service certificate” found on page

15.

If your furnace is shut down during the cold weather season, water pipes may freeze, burst and cause serious water damage. Turn off the water supply and bleed the pipes

If the heater is left unattended during the cold weather season, take the following precautions: Close the main water valve in the house and purge the pipes if possible. Open all the faucets in the house; Ask someone to frequently check the house during the cold weather season to make sure that there is sufficient heat to prevent the pipes from freezing. Tell this person to call an emergency number if required.

Printed on 100 % recycled paper 11/13

READ THIS FIRST!

Failure to adhere to the guidelines below can result in severe personal injury, death or substantial property damage.

Service and maintenance –

1. To avoid electric shock, disconnect electrical supply before

performing maintenance.

2. To avoid severe burns, allow furnace to cool before

performing maintenance.

3. Perform service and maintenance as described in this

manual and the burner manual.

4. Do not attempt to make adjustments to the blower or motor

while the furnace is in operation. Disconnect power to the furnace and be sure all parts have stopped moving before attempting adjustments or maintenance.

5. The burner must be set up and adjusted using combustion

test instruments. Visual examination of the flame alone cannot determine combustion performance.

Operation -

6. Do not use the furnace as a construction heater.

7. Do not operate any furnace if the heat exchanger is

damaged, corroded or pitted. Toxic flue products could enter the air stream.

8. Do not jumper, attempt to by-pass or override any limit

control.

9. Do not block flow of combustion or ventilation air to furnace.

Do not block or obstruct the air openings in the furnace casing.

10. Do not store or use combustible materials, gasoline, or other

flammable liquids or vapors in the furnace area.

11. Do not operate the furnace if the furnace area will be

exposed to air contaminants as described on page 6.

12. Should overheating occur, do not turn off or disconnect

electrical supply to furnace. Instead, shut off the oil supply at a location external to the appliance, if possible.

13. Do not use this furnace if any part of it has been under

water. Call a qualified service technician immediately, to inspect the furnace and to replace any part of the furnace, control system or burner that was submerged in water.

14. Do not operate furnace if temperature rise through heat

exchanger exceeds 85°F.

15. Inspect, clean and replace (if necessary) return air filter

regularly.

16. Do not obstruct return air grills or supply air outlets.

17. Supply only with #2 fuel oil to the burner. Never attempt to

use gasoline, a mixture of gasoline and oil, waste fuel, reused or any other substance in the burner of furnace.

Installation -

18. Do not block flow of combustion or ventilation air to furnace.

Do not block or obstruct the air openings in the furnace casing.

19. Connect furnace only to a functional vent system in good

condition. Place the furnace to allow proper venting, with the shortest possible venting and minimum number or elbows.

20. Always connect and seal a return air duct to the furnace

unless the furnace is located in a large space, such as an unpartitioned basement. Route the return air duct to an adjacent room if no return air manifold is used.

21. Install furnace maintaining minimum clearances for service

and separation from combustible surfaces described in this manual.

22. Install, start-up, service and maintain burner per instructions

in this manual and the burner manual.

23. Verify burner is properly inserted through the combustion

chamber opening.

24. Furnace must be installed so that burner and control system

components are protected from dripping, spraying water or rain during operation or service.

25. If installing an air conditioning evaporator coil, install the coil

downstream of, or in parallel with, the furnace to prevent condensation on the furnace heat exchanger. If the coil is in parallel, provide means to prevent flow of chilled air into the furnace, including an interlock to prevent simultaneous operation of heating and air conditioning.

Apply the following suggestions to prevent unsatisfactory operation of the furnace.

Installation –

1. Be sure to level the furnace, using a spirit level on the front and

one side. If the furnace is not level, oil can drip into the combustion chamber after burner cycling and contaminate the heat exchanger and the burner head.

2. Make sure all legs are in contact with the floor to distribute the

load and prevent the possibility of undue noise or vibration.

It is recommended that carbon monoxide detectors be installed wherever oil or gas fired heaters are used. Carbon monoxide can cause bodily harm or death. For this reason, agency approved carbon monoxide detectors should be installed in your residence and properly maintained to warn of dangerously high carbon monoxide levels

There are several sources of possible smoke and flames in a residence. Smoke and flames can cause bodily harm or death. For this reason, agency approved smoke detectors should be installed in your residence and properly maintained, to warn early on, of a potentially dangerous fire. Also, the house should be equipped with approved and properly maintained fire extinguishers.

Your unit is equipped with safety devices that can prevent it from functioning when anomalies are detected such as the optional Blocked Vent Shut-off device.

2 11/13

Avoid locating return grills in rooms that may contain undesirable odors.

3. Never locate a return air grill closer than approximately 20 feet

from the furnace.

4. Locate the furnace near the center of the supply and return duct

systems.

5. Always check the size of the ducts on a replacement installation,

particularly if adding air conditioning.

PLB-112 Oil Furnaces – Furnace Manual

1. INSTALLATION

The unit is shipped with a burner and its controls. It requires a 115 VAC power supply to the control panel and thermostat hook-up as shown on the wiring diagram, one or more oil line connections, suitable ductwork and connection to a properly sized vent.

All local and national code requirements governing the installation of oil burning equipment, wiring and the flue connection MUST be followed. Some of the codes that may apply are:

CSA B139: Installation code for oil burning

equipment.

ANSI/NFPA 31: Installation of oil burning equipment. ANSI/NFPA 90B: Warm air heating and air conditioning

systems.

ANSI/NFPA 211: Chimneys, Fireplaces, Vents and solid

fuel burning appliances.

ANSI/NFPA 70: National Electrical Code. CSA C22.1 Canadian Electrical Code.

or CSA C22.10:

Only the latest issues of these codes may be used.

1.1. POSITIONING THE FURNACE

Fire and explosion hazard. The furnace must be installed in a level position,

never where it will slope toward the front. Do not store or use gasoline or any other

flammable substances near the furnace. Non-observance of these instructions will

potentially result in death, bodily injury and/or property damage.

This furnace is not watertight and is not desig ned for outdoor installation. It must be installed in such a manner as to protect its electrical components from water. Outdoor installation w ill lead to a hazardous electrical condition and to premature failure of the equipment.

The minimum clearances from combustible ma terial for each of the positions are specified in Table 1.

If the furnace is installed in a basement or on a dirt floor, in a crawl space for example, it is recommended to install the unit on a cement base 2.5 cm to 5.0 cm (1" to 2") thick.

The unit must be installed in an area where the ambient and return air temperatures are above 15°C (60°F). In addition, the furnace should be installed as closely as possible to the vent, so that the connections are direct and kept to a minimum. The heater should also be located close to the centre of the air distribution system.

1.1.1. Installation in an enclosure

The unit can be installed in an enclosure such as a closet. However, 2 ventilation openings are required for combustion air. The openings should be located in front of the furnace approximately 15 cm (6") above the floor and 15 cm (6") below the ceiling. Figure 1 indicates the minimum dimensions required and the location of the openings.

Figure 1: Location and dimensions of ventilation air openings

in a closet door

Table 1: Minimum clearances from combustible materials

LOCATION APPLICATION

SIDES BACK ACCESS PANEL TO BLOWER 10.16 cm (4") 0.6 m (24") TOP BOTTOM FURNACE (COMBUSTIBLE FLOOR) 0 cm (0")

FLUE PIPE AROUND FLUE PIPE 22.86 cm (9") FRONT FURNACE 20.32 cm (8") 0.6 m (24")

11/13 3

FURNACE 2.54 cm (1") 0.6 m (24") SUPPLY PLENUM WITHIN 6 FEET OF FURNACE 2.54 cm (1")

FURNACE OR PLENUM 5.08 cm (2") HORIZONTAL W ARM AIR DUCT WITHIN 6 FEET OF FURNACE 5.08 cm (2")

CLEARANCES

(combustible

materials)

RECOMMANDED

ACCESS FOR

SERVICE

PLB-112 Oil Furnaces – Furnace Manual

1.2. ELECTRICAL SYSTEM

The exterior of the unit must have an uninterrupted ground to minimize the risk of bodily harm, if ever an electrical problem develops. A green ground screw is supplied with the control box for that purpose.

The appliance must be installed in accordance with the current ANSI/NFPA 70 National Electrical Code, CSA C22.1 Canadian Electrical Code Part 1 and/or local codes.

The control system depends on the correct polarity of the power supply. Connect “HOT” wire (H) and “NEUTRAL” wire (N) as shown in Figures 9 and 10.

A separate line voltage supply should be used, with fused disconnect switch or circuit breaker, between the main power panel and the unit.

Only copper wire may be used for the 115V circuit on this unit. If wires need to be changed, the replacements must have the same temperature resistance as the originals.

1.3. INSTALLATION OF THE THERMOSTAT

A thermostat must be installed to control the temperature of the area to be heated. Follow the instructions supplied with the thermostat. Also refer to the wiring diagrams provided with the heating/air conditioning unit. The connections must be made as indicated on the following diagrams and the wiring diagrams, figures 9 and 10.

Figure 2: Heating & Air Conditioning - With 4 Speed Motor

Figure 3: Thermostat Wiring- Heating & Air Conditioning -

With ECM Variable Speed Motor

Figure 4: Thermostat Wiring-Heating & Air

Conditioning/HeatPump - With ECM Variable Speed Motor

1.4. INSTALLATION OF THE BURNER

Refer to the burner manufacturer’s instructions. Also, the burner must be installed always in the same way independently of the furnace orientation.

1. Position the mounting gasket between the mounting flange and the burner mounting plate. Align the holes in the burner mounting plate with the studs on the mounting flange and bolt securely in place.

2. Remove the burner drawer assembly or the air tube assembly;

3. Install the nozzle, refer to Technical Specifications Table 11;

4. Check the electrode settings;

5. Make the electrical connections;

6. Complete oil line connections.

1.4.1. Nozzles

The burner comes equipped with an appropriate nozzle. However, if another size or a replacement nozzle is required, use the manufacturer’s recommended spray angle and type a shown in Table 11 and specified pump pressure.

Always select nozzle sizes by working back from the desired flow rate at operating pressure and not the nozzle marking.

1.4.2. Air and Turbulator Settings

Before starting the burner for the first time, adjust the air and turbulator settings to those listed in this manual, Table 11. Once the burner becomes operational, final adjustments will be required. Refer to section 2 of this manual.

1.4.3. Post purge delay adjustment

The post purge delay on the oil-fired burners is factory set to zero second. This delay is applicable for all installations with chimney venting. For heating units installed with side wall venting and a burner equipped with this feature, the post purge delay must be set to 15 seconds (For configuration use the Beckett Contractor’s Tool "52082U"). No delay is required for Riello burners. Refer to the burner control instruction manual and markings for proper adjustment of the post purge delay.

4 11/13

PLB-112 Oil Furnaces – Furnace Manual

1.5. VENTING

Poisonous carbon monoxide gas, fire and explosion hazard.

Read and follow all instructions in this section. Failure to properly vent this furnace can result

in death, bodily injury and/or property damage. To ensure the safe and proper functioning of an

oil furnace, it must always be connected to a flue with sufficient draft or to an approved sidewall venting system. In addition, it is strongly recommended to perform a complete inspection of all the existing venting systems.

Poisonous carbon monoxide gas hazard. Never install a hand operated damper in the vent pipe. However, any Underwriters Laboratories listed, electrically operated automatic type vent damper may be installed if desired. Be sure to follow the instructions provided with vent damper. Also, read and follow all instructions in this section of the manual.

Failure to properly vent this furnace or other appliances can result in death, bodily injury and/or property damage.

1.5.1. Masonry chimney

This furnace can be vented into an existing masonry chimney. However, the unit must not be vented into a chimney into which a solid fuel burning furnace is already being vented.

Before venting this furnace into a chimney, its condition must be checked and repairs made, if necessary. Also, the chimney lining and dimensions must conform to local and national codes.

This device is designed to detect the insufficient evacuation of combustion gases in the event of a vent blockage. In such a case the thermal switch will shut down the oil burner. The device will then need to be re-armed MANUALLY.

Refer to the detailed instructions and wiring diagrams supplied with the BVSO for the installation and wiring procedures. The length of wires supplied with the unit is such that the safety device must be installed between the flue outlet of the appliance and the draft regulator, as indicated in the instructions.

It is also essential that the BVSO be maintained annually. For more details refer to the instructions supplied with the device itself, as well as Section 2 of this Manual.

1.6.1. BVSO Performance Test

The purpose of the following test is to check that the electrical outlet on the furnace, designated to the BVSO, is functional.

1. Start up the burner;

2. Disconnect one wire of the BVSO;

3. The burner must shut-off immediately, while the blower

continues to run to the end of the cool-down cycle.

If the test is not in line with the above, call a QUALIFIED SERVICE TECHNICIAN.

Figure 5: BVSO mounting installation: Upflow with vertical exhaust (OPTIONAL)

1.5.2. Factory Built Chimneys

Oil fired furnaces are approved for use with “L” type vents. The unit may also be used with an approved chimney of proper dimensions and temperature ratings as specified in the installation code. Refer to chimney manufacturer’s instructions for proper installation.

1.5.3. Draft Regulator

It is recommended that a draft regulator be installed in cases where the draft is either high or variable due to external conditions. Follow the instructions provided with the regulator.

1.5.4. Side-wall Venting

The heating unit is approved for side-wall venting. This system is comprised of a model VTK-54 side-wall venter and a 4” insulated vent pipe, model IFV-410, IFV-420. Refer to the installation instructions provided with the venting system.

1.6. BLOCKED VENT SHUT-OFF DEVICE (BVSO)

FOR CHIMNEY VENTING -

OPTIONAL

It is imperative that this device be installed by a qualified service technician. A positive pressure venting system (Sealed Combustion System or Direct Vent) must NOT use the BVSO. Follow the instructions supplied with the venting system.

Figure 6: BVSO mounting installation: Upflow with horizontal exhaust (OPTIONAL)

11/13 5

PLB-112 Oil Furnaces – Furnace Manual

Figure 7: BVSO Wiring (OPTIONAL)

These conditions will require that only outside air be used for combustion. The following areas or types of structures may contain or be exposed to certain substances, potentially requiring outside air for combustion:

a. Commercial buildings; b. Buildings with indoor pools; c. Furnaces installed near chemical storage areas.

Exposure to the following substances:

a. Permanent wave chemicals for hair; b. Chlorinated waxes and cleaners; c. Chlorine based swimming pool chemicals; d. Water softening chemicals; e. De-icing salts or chemicals; f. Carbon tetrachloride; g. Halogen type refrigerants; h. Cleaning solvents (such as perchloroethylene); i. Printing inks, paint removers, varnishes, etc. ; j. Hydrochloric acid; k. Solvent based glue; l. Antistatic fabric softeners for clothes dryers; m. Acid based masonry cleaning materials.

1.7. COMBUSTION AIR SUPPLY AND VENTILATION

Poisonous carbon monoxide gas hazard. Comply with NFPA 31 (U.S.) and CSA B139 (Canada)

standards for the installation of Oil Burning Equipment and applicable provisions of local building codes to provide combustion and ventilation air.

Failure to provide adequate combustion and ventilation air can result in death, bodily injur y and/or property damage.

Oil furnaces must have an adequate supply of combustion air. It is common practice to assume that older homes have sufficient infiltration to accommodate the combustion air requirement for the furnace. However, home improvements such as new windows, doors, and weather stripping have drastically reduced the volume of air infiltration into the home.

Refer to oil furnace installation codes relative to combustion and ventilation air requirements. Consult Section 1.1.1. in this manual, specifically for units installed in an enclosed space.

Home air exhausters are common. Bathroom and kitchen fans, power vented clothes dryers and water heaters all tend to create a negative pressure condition in the home. Should this occur the chimney becomes less and less effective and can easily downdraft. In certain cases, mechanically supplied air, by way of a blower, interlocked with the unit, is necessary. It is the installer’s responsibility to check that.

1.7.1. Contaminated Combustion Air

Installations in certain areas or types of structures will increase the exposure to chemicals or halogens that may harm the furnace.

1.7.2. Burner with Outdoor Combustion Air Kit

Some burners are designed to function with combustion air taken directly from the outside. Follow the instructions provided with the burner, the fresh-air supply kit or the side-wall venting kit.

1.8. OIL TANK

Fire and explosion hazard. Use only approved heating type oil in this furnace. DO NOT USE waste oil, used motor oil, gasoline or kerosene.

Use of these will result in death, bodily injury and/or property damage. When a 0.75 USGPH or smaller nozzle is used, a 10 micron or finer filter, must be installed on the oil supply line to the furnace inside the building where the unit is located. This is a requirement in order for the heat exchanger warranty to remain in force.

Check your local codes for the installation of the oil tank and accessories.

At the beginning of each heating season or once a year, check the complete oil distribution system for leaks.

Ensure that the tank is full of clean oil. Use No.1 or No.2 Heating Oil (ASTM D396 U.S.) or in Canada, use No.1 or No.2 Furnace Oil.

A manual shut-off valve and an oil filter shall be installed in sequence from tank to burner. Be sure that the oil line is clean before connecting to the burner. The oil line should be protected to eliminate any possible damage. Installations where the oil tank is below the burner level must employ a two-pipe fuel supply system with an appropriate fuel pump. A rise of 2.4 m (8') and more requires a two stage pump and a rise greater than 4.9 m (16') an auxiliary pump. Follow the pump instructions to determine the size of pipe needed in relation to the rise or to the horizontal distance.

6 11/13

PLB-112 Oil Furnaces – Furnace Manual

1.9. CONNECT SUPPLY AND RETURN DUCTS

1.9.1. Duct sizing

1.9.1.1. Determine airflow CFM

The temperature rise through the furnace must not exceed 85°F, but should be at least 55°F for comfort. When calculating airflow, assume a temperature rise of 70°F.

The noticeable temperature change for cooling would be approximately 27-30°F. Actual temperature change will be approximately 18-21°F due to humidity of the air.

To calculate noticeable heat temperature change (ΔT), you can use the formula:

ΔT = BTU/h / (1.1 x CFM) Eq. 3 - 1

To calculate air flow when you know temperature change (ΔT), you can use:

CFM = BTU/h / (1.1 x ΔT) Eq. 3 - 2

You can estimate air flow using the following rules of thumb:

Heating: 14 CFM per 1,000 BTU/h output Eq. 3 - 3 Cooling: 400 CFM per ton air conditioning Eq. 3 - 4

Determine the required airflow based on whichever is larger: heating mode or air conditioning mode.

Examples:

1. What would the temperature rise be for a 100,000 BTU/h output

furnace with an airflow rate of 1200 CFM?

Use Equation 3-1 since you know CFM and BTU/h:

ΔT = 100,000 / (1.1 x 1200) = 76°F

• The temperature rise would be 76°F.

• If the air enters the furnace at 70°F, it would leave the

furnace at 70°F + 76°F = 146°F.

2. What would the airflow be to obtain a 70°F rise through a

120,000 BTU/h output furnace?

Use equation 3-2 since you know ΔT and BTU/h:

CFM = 120,000 / (1.1 x 70) = 1558 CFM

• The air flow would have to be 1558 CFM to obtain a temperature rise of 70°F.

3. Estimate the required airflow for a 75,000 BTU/h output furnace

installed with a 2-ton air conditioning evaporator coil.

Heating mode air flow (use Equation 3 - 3):

CFM = 75 x 14 = 1050 CFM

Cooling mode air flow (use Equation 3 - 4):

CFM = 2 x 400 = 800 CFM

• The larger number is 1050 CFM (heating), so the duct system should be sized for 1050 CFM.

• The supply duct would need to be 16” round or a rectangular equivalent such as 8” x 25" or 12" x 18", using Table 3.

4. Estimate the required airflow for the same furnace installed with

a 4-tons air conditioning evaporator coil.

Heating mode airflow is still 1050 CFM.

Cooling mode air flow (use Equation 3 - 4):

CFM = 4 x 400 = 1600 CFM

• The larger number is 1600 CFM (cooling), so the duct system should be sized for 1600 CFM.

• The supply duct would need to be 18” round or a rectangular equivalent such as 8" x 36" or 12" x 23", using Table 3.

Always check the size of existing ducts, particularly if you are adding air conditioning. The air pressure loss through the cooling evaporator coil reduces available airflow. If the ducts are too small as well, the system may not work satisfactorily on either heating or cooling.

1.9.1.2. Determine duct dimensions

Table 3, page 8 and Table 4, page 9, provide typical round and rectangular duct sizes for rectangular and flat oval galvanized ducts. Do not apply these tables to size ductwork if the total equivalent length of the duct exceeds approximately 100 feet. For longer systems or for duct board, fiberglass-lined or flexible duct sizing, use the ACCA Manual D or the ACCA duct sizing slide rule. These tables are based on pressure loss of approximately 0.10” water column per 100 feet equivalent length of duct.

Use Table 2 below to size or check sizing of take-offs to supply registers or return grills.

Verify the size and type of registers, diffusers and grills from the manufacturer’s ratings. Do not exceed the recommended flow rate. The pressure drop allowance for each should not exceed approximately 0.05” water column.

Install a return air filter, sized per specifications in Table 10.

Use only a return air filter mounted to the furnace. Do not add additional filters unless the duct system is carefully sized to allow for the additional pressure drop.

Table 2: Suggested maximum flow to runouts

TAKE-OFF SIZE

(Inches)

Sheet metal or ductboard

5 Round 60 45

6 Round 100 75

7 Round 140 110

8 Round 210 160

3 ¼ x 8 Stack 70 55

3 ¼ x 10 Sta ck 100 75

3 ¼ x 14 Sta ck 140 110

2 ¼ x 12 Sta ck 70 55

2 ¼ x 14 Sta ck 90 70

Flexible duct (keep bends to minimum)

6 Round 55 40

8 Round 120 90

10 Round 200 160

12 Round 320 250

14 Round 480 375

16 Round 660 530

18 Round 880 680

20 Round 1200 900

SUPPLY RETURN

CFM

11/13 7

PLB-112 Oil Furnaces – Furnace Manual

1.9 CONNECT SUPPLY AND RETURN DUCTS (continued)

1.9.1 Duct sizing (continued)

Table 3: Typical duct sizing for systems not over 100 feet equivalent length – round or rectangular galvanized

Typical duct sizing

(For approximately 0.10 inch w.c. in a typical residential installation of galvanized metal duct)

Round

CFM

duct

diameter4567891012141618202224262830

(inches)xxxxxxxxxxxxxxxxx

100

150

200

250

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2200

2400

2600

2800

3000

3500

4000

Rectangular duct equival ent si zes Mini mum width

4 5 6 7 8 9

9 10 12 12 12 14 14 16 16 16 16 18 18 18 18 18 20 20 20 22 22 22 22 24 26

Do not apply this table for duct systems over approximately 100 equivalent feet length. For longer systems or systems using other duct materials, refer to ACCA Manual D. Incorrectl y sizing duct systems can res ult in unsafe or uncomfortable operation.

444--------------

6544- - - - - - - - - - - - -

865544- - - - - - - - - - -

1297655544-- - - - - - -

141198766544- - - - - - -

18 13 10 9 8 7 6 6 5 5 4 4 - - - - -

20 15 12 10 9 8 7 6 6 5 5 4 4 - - - -

2619151311109876655544-

322318151312119876665555

3828221815131210987766655

46322520171514111098777666

523628231917151311109887766

5841312521191714121110988777

6445342823201815131110998877

72493830252219161412111099887

-5441332724211715131211109988

- 58443529252218161412111010 9 9 8

- 6347383127241916141312111010 9 9

- 685140342925201715141212111010 9

- 725443363027211816141312111110 9

- - 58 45 38 32 28 23 19 17 15 14 13 12 11 10 10

- - 61 48 40 34 29 24 20 17 16 14 13 12 11 11 10

- - 64 51 42 35 31 25 21 18 16 15 14 13 12 11 11

- - 68 53 44 37 32 26 22 19 17 15 14 13 12 12 11

- - - 59 48 41 35 28 23 20 18 16 15 14 13 12 12

- - - 64 52 44 38 30 25 22 19 17 16 15 14 13 12

- - - 69 56 47 41 32 27 23 21 19 17 16 15 14 13

----61514434292522201817151514

----65544737302623211917161514

-----635442342926232119181716

-----726147393329262321201918

(inches)

for duct height s

(inches)

of :

8 11/13

PLB-112 Oil Furnaces – Furnace Manual

1.9 CONNECT SUPPLY AND RETURN DUCTS (continued)

1.9.1 Duct sizing (continued)

Table 4: Typical duct sizing for systems not over 100 feet equivalent length – round or flat oval galvanized

CFM

100

150

200

250

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2200

2400

2600

2800

3000

3500

4000

Typical duct sizing

(For approximately 0.10 inch w.c. in a typical residential installation of galvanized metal duct)

Round

duct

diameter3456789101214161820

(inches)xxxxxxxxxxxxx

10 12 12 12 14 14 16 16 16 16 18 18 18 18 18 20 20 20 22 22 22 22 24 26

Flat oval duct equi val ent sizes Mini mum width

4 5 6 7 8 9 9

65-----------

86-----------

1187----------

161198---------

211511108--------

26181411109-------

302016131110-------

40262016141211------

4932241916141312-----

5938282219161513-----

694432252118161513----

-5036292420181614----

-5641322622201815----

- 634535292422191715 - - -

- 694938312623211816 - - -

- 755341332825221917 - - -

- - 58 44 36 30 26 24 20 18 - - -

- - 62 47 38 32 28 25 21 18 17 - -

- - 66 50 41 34 30 26 22 19 18 - -

- - 71 54 43 36 31 28 23 20 18 - -

- - - 57 46 38 33 29 24 21 19 - -

- - - 60 48 40 35 31 25 22 20 - -

- - - 63 50 42 36 32 26 23 21 19 -

- - - 67 53 44 38 33 27 24 21 20 -

- - - 73 58 48 41 36 29 25 23 21 -

----635244393227242221

----685648423429252322

-----6051443630272423

-----6454473832282624

------63544336322826

------71614840353129

(inches)

for duct heights

(inches)

of :

11/13 9

PLB-112 Oil Furnaces – Furnace Manual

1.9.2. Ducting

Poisonous carbon monoxide gas hazard. DO NOT draw return air from inside a closet or utility room. Return air MUST be sealed to the furnace casing. Failure to properly seal ducts can result in death, bodily injury and/or property damage.

The ducting must be designed and installed according to approved methods, local and national codes as well as good trade practices.

When ducting supplies air to a space other than where the furnace is located, the return air must be sealed and also be directed to the space other than where the furnace is located.

1.9.3. Air filter

A properly sized air filter must be installed on the return air side of the unit. Refer to table 10, for the correct dimensions. Also refer to the instructions supplied with the filter.

1.10. SUPPLY AIR ADJUSTMENTS (4 SPEED MOTORS)

On units equipped with 4-speed blower motors, the supply air must be adjusted based on heating/air conditioning output and the static pressure of the duct system. For the desired air flow refer to the following table as well as the air flow tables based on static pressure in the table 12 of this manual.

Table 5: Blower speed adjustments

FURNACE

APPLICATION

HEATING

A/C

To effect the adjustment, the RED (for heating) and BLUE (for cooling and heat pump) wires can be changed on the motor. Also, refer to the position of the wires on the electronic board of the unit and consult the wiring diagrams. If the heating and air conditioning speeds are the same, the RED wire must be moved to “UNUSED LEADS” on the electronic board and the jumper provided with the BLUE wire must be used between the “HEAT” and “COOL” terminals.

The blower start/stop delays can be adjusted by positioning the DIP switches on the electronic board as shown in the following figures. The recommended blower ON delay is 60 seconds and the blower OFF delay is 2 minutes.

Figure 8: Blower start/stop delays

(4-speed motors)

HEATING OR

A/C

OUTPUT

RECOMMENDED

BLOWER SPEED

0.50 USGPH MED-LOW

0.60 USGPH MED-HIGH

0.70 USGPH HIGH

2.0 TONS MED-LOW

2.5 TONS MED-HIGH

3.0 TONS HIGH

Board # 1158

1.11. SUPPLY AIR ADJUSTMENTS (ECM VARIABLE SPEED MOTORS)

On units equipped with ECM variable speed blower motors, the air supply must be adjusted based on heating/air conditioning output. The start/stop delays of the blower must also be adjusted by positioning the DIP switches on the electronic board. Refer to the following tables, air flow table 13 and the wiring diagram, figure 10 in this manual for the proper settings:

Table 6: Supply air adjustments, ECM variable speed motors,

DIP Switch Positions

1 2 POSITION

OFF OFF A 0.70

ON OFF B 0.60

OFF ON C 0.50

ON ON D ALL

Table 7: Supply air adjustments, ECM variable speed motors,

DIP Switch Positions

1 2 POSITION

OFF OFF A 3.0

ON OFF B 2.5

OFF ON C 2.0

ON ON D 1.5

Table 8: CFM adjustments, all modes

SW3 – ADJ (Adjustment)

DIP Switch Positions

1 2 POSITION

OFF OFF A 0% 0%

ON OFF B 10% 10%

OFF ON C -10% -10%

ON ON D N/A 0%

Table 9: Delay adjustments - heating mode

DIP Switch Positions

1 2 POSITION

OFF OFF A 0.70

ON OFF B 0.60

OFF ON C 0.50

ON ON D ALL

heating mode

SW1 – HEAT

air conditioning mode

SW2 – COOL

SW4 – Delay

Input

USGPH

Output

Tons

CFM HTG. % increase or decrease

Input

USGPH

CFM A/C % increase or decrease

10 11/13

1.12. INSTALLATION OF ACCESSORIES

Electrical shock hazard. Turn OFF electrical power at the fuse box or

service panel before making any electrical connections and ensure a proper ground connection is made before connecting line voltage.

Failure to do so can result in death or bodily injury.

PLB-112 Oil Furnaces – Furnace Manual

1.12.1. Humidifier (HUM)

The 120 VAC HUM terminal on the electronic board of the blower is tied directly to terminal 8 of the 9-terminal connector of the electronic board. It supplies 120 VAC electric power when the burner is in operation.

A 24 VAC signal can also be supplied from the W and C terminals on the blower electronic board to activate a switching relay.

Also refer to the instructions supplied with the accessory.

1.12.2. Electronic Air Cleaner (EAC)

The EAC terminal on the electronic board supplies 120 VAC when the blower is operating in the heating or air conditioning mode. This signal can be used to activate an electronic air cleaner that is not equipped with an air flow switch. If the cleaner is equipped with an air flow switch, the S terminal on the electronic board or one of the 120 VAC terminal on the ECM electronic card can be used to provide a constant supply of 120 VAC.

Also refer to the instructions supplied with the accessory.

1.12.3. Air Conditioner (or Heat Pump)

An air conditioning coil may be installed on the supply air side ONLY.

A clearance of 15 cm (6") is required between the bottom of the coil drain pan and the top of the heat exchanger. If a heat pump is installed, a “dual-energy” thermostat, or other control is recommended, in order to prevent the simultaneous operation of the furnace and the heat pump. It also prevents a direct transition from heating by way of the heat pump to heating with oil. Refer to the thermostat instructions or those of another control used for the proper wiring.

Poisonous carbon monoxide gas hazard. Install the evaporator coil on the supply side of the furnace ducting ONLY. An evaporator coil installed on the return air side of the ducting can cause condensation to form inside the heat exchanger, resulting in heat exchanger failure. This in turn, can result in death, bodily injury and/or property damage.

2.2. OPERATING SEQUENCE OIL HEATING MODE

1. The W-R contact closes;

2. The burner motor starts up to pre-purge the combustion

chamber for a period of 10 to 15 seconds. During that time a spark is established on the electrodes;

3. The solenoid valve opens and a flame is established. Shortly

after, the electrodes cease to spark;

4. Then the blower runs up to full speed. The delay depends on

the adjustments that were made on the electronic board, which controls the blower motor. Refer to Sections 1.10. to 1.11., as well as the CFM tables 12 and 13 for more details.

5. When the call for heat is satisfied, the solenoid valve closes,

the flame goes out and the burner motor stops (after post purge delay, if applicable).

6. The blower stops shortly after the burner. The delay depends

on the adjustments that were made on the electronic board that controls the blower. Refer to Sections 1.10. to 1.11., as well as the CFM tables 12 and 13 for more details.

Note: A detailed operating sequence of the oil burner is outlined in the instructions provided with the burner.

2.3. CHECKS AND ADJUSTMENTS

2.3.1.

Purging the oil line

Open the bleed port screw and start the burner. Allow the oil to drain into a container for at least 10 seconds. The oil should flow absolutely free of white streaks or air bubbles to indicate that no air is being drawn into the suction side of the oil piping and pump. Slowly close and tighten the bleed screw. Once closed, the flame will light up.

2.3.2. Pressure adjustment

The oil pressure must be adjusted according to the Specifications in Table 11 of this manual. An adjustment screw and a connection for a pressure gauge are located on the oil pump for that purpose. Also refer to the burner instruction manual.

2. OPERATION

2.1. START-UP

Before starting up the unit, be sure to check that the following items are in compliance:

1. The electrical installation, the oil supply system, the venting system, combustion air supply and ventilation;

2. The blower access door is in place and the blower rail locking screws are well tightened;

3. The Blocked Vent Shut-Off (BVSO) is installed according to instructions (for chimney venting);

4. The oil supply valve is open;

5. The burner ‘’Reset’’ button is well pushed in or re-armed;

6. The preliminary air adjustments on the burner comply with the technical specifications in this manual;

7. The blower speed adjustments for heating and air conditioning are appropriate and according to the specifications in this manual;

8. The blower start/stop delays are satisfactory;

9. The thermostat of the room is in the heating mode and is set higher than the ambient temperature.

To start the unit, turn the main electrical switch on.

11/13 11

PLB-112 Oil Furnaces – Furnace Manual

2.3.3. Combustion Check

The heat exchanger metal surfaces may have oil and the baffle insulation also contains binders. These products will burn or evaporate when the unit operates for the first time. Because of that, the smoke reading may be skewed during the first minutes of operation. Therefore, the unit must operate during at least

60 minutes before taking any readings to adjust the combustion quality. Let the unit cool down before making any adjustments.

The combustion check verification MUST be performed after the nozzle replacement or the burner cleaning. After these manipulations, the combustion parameters are necessarily modified.

1. Pierce a test hole in the flue pipe, approximately 18 inches from

Refer also to the burner instruction manual.

the furnace breech. Insert the smoke test probe into the hole. For installation using a sidewall venting, use the orifice provided on the breech plate;

2. From a cold start

, let the unit operate for about 5 minutes;

3. Set the burner air setting until you have between 0 and 1 on the Bacharach Scale (or a ‘’trace’’);

4. Take a CO

sample at the same test location where the #1

smoke reading was taken and make note of it. Example: 13.8%

or 2.5% of O2;

of CO

5. Adjust the burner air setting to obtain a CO (or an O

reading 2.0% higher) than the reading associated

with the ‘’trace’’ of smoke. Example: 12.3% of CO

;

reading 1.5% lower

or 4.5% of

6. This method of adjusting the burner will result in clean combustion (Bacharach smoke scale between 0 and a ‘’trace’’) and ensure the proper functioning of the system. The optimum

level is around 12% to 13% (or 3.5% to 5.0% of O2).

2.3.4. Draft Regulator adjustment

On chimney installations only, a barometric draft regulator (supplied with the furnace) must be installed, in order to ensure proper draft through the furnace. The barometric damper must be mounted with the hinge pins in a horizontal position and the face of the damper vertical for proper functioning (see instructions included with the damper.) After the furnace has been firing for at least five minutes, the draft regulator should be set to between -0.025" and -0.060" W.C.

2.3.5. Overfire pressure test

The overfire draft that is taken through the observation port, located above the burner, is a measurement necessary to determine if there is a blockage in the heat exchanger or the flue pipe. The overfire pressure should be set between -0.035” to +0.025”W.C. for chimney installation and +0.05” to +0.17”W.C. for direct vent installation. A high pressure condition may be caused by excessive combustion air, due to the air band being too wide open, or a lack of flue draft (chimney effect) or some other blockage, such as soot in the secondary section of the heat exchanger or the use of an oversize nozzle input or high pressure pump.

2.3.6. Vent Temperature Test

1. After having adjusted the burner combustion, insert a thermometer into the test hole in the breech pipe;

Low flue gas temperatures increase the risk of condensation. Adjust the total

temperature at or higher then 204°C (400°F) in order for the heat exchanger warranty to remain in force.

2. The total

vent temperature should be between 204 and 302°C

(400 and 575°F). If not, check for improper air temperature rise, pump pressure, nozzle size or a badly soothed heat exchanger.

2.3.7. Supply Air Temperature Rise Test

1. Operate the burner for at least 10 minutes;

2. Measure the air temperature in the return air plenum;

3. Measuring the air temperature in the largest trunk coming off the supply air plenum, just outside the range of radiant heat from the heat exchanger. 0.3 m (12") from the plenum of the main take-off is usually sufficient;

4. The temperature rise is calculated by subtracting the return air temperature from the supply air temperature;

5. If the temperature rise is lower or exceeds the temperature specified in Table 10, change to the next lower or higher blower speed tap, until the temperature rise falls to the target. If the excessive temperature rise cannot be increased or reduced by changing fan speed, investigate for ductwork obstructions, dirty or improper air filter, improper firing caused by improper pump pressure or nozzle sizing.

2.3.8. Limit Control Check

After operating the furnace for at least 15 minutes, restrict the return air supply by blocking the filters or the return air register and allow the furnace to shut off on High Limit. The burner will shut off but the blower will continue to run.

Remove the obstruction and the burner should restart after a few minutes. The time required for the restart also depends on the adjustment of the blower “OFF” delay.

2.3.9. Restart after Burner Failure

1. Set the thermostat lower than room temperature;

2. Press the reset button on the burner primary control (relay);

3. Set the thermostat higher than room temperature;

4. If the burner motor does not start or ignition fails, turn off the disconnect switch and CALL A QUALIFIED SERVICE TECHNICIAN.

Do not attempt to start the burner when excess oil has accumulated, when the furnace is full of vapor or when the combustion chamber is hot.

12 11/13

PLB-112 Oil Furnaces – Furnace Manual

3. MAINTENANCE

Electrical shock hazard. Turn OFF power and fuel to the furnace before any disassembly or servicing. Failure to do so can result in death, bodil y injury and/or property damage.

Preventive maintenance is the best way to avoid unnecessary expense and inconvenience. Have your heating system and burner inspected by a qualified service technician at regular intervals.

To maintain the reliability and optimal performance of the furnace, have a complete combustion check done after the annual maintenance call. Do not attempt to repair the furnace or its controls. Call a qualified service technician.

Before calling for repair service check the following points:

1. Check the oil tank gauge and make sure the valve is open;

2. Check fuses and the circuit breaker;

3. Check if the main disconnect switch is ON;

4. Set the thermostat above room temperature;

5. If ignition does not occur, turn off the disconnect switch and call a qualified service technician.

When ordering replacement parts, please specify the complete serial and furnace model number.

3.1. CLEANING THE HEAT EXCHANGER

It is not generally necessary to clean the heat exchanger or flue pipe every year, but it is advisable to have the oil burner service technician check the unit before each heating season to determine whether the cleaning or replacement of parts is necessary. If a cleaning is necessary, the following steps should be performed:

1. Turn OFF all utilities upstream from the furnace;

2. Disconnect the flue pipe;

3. Remove the flue collar panel located at the front of the furnace;

4. Remove the heat exchanger baffles;

5. Disconnect the oil line and remove the oil burner;

6. Clean the secondary tubes and the primary cylinder with a stiff brush and a vacuum cleaner;

7. Before re-assembling the unit, the heat exchanger and combustion chamber should be inspected to determine if replacement is required;

8. After the cleaning replace the heat exchanger baffles, flue collar plate and oil burner;

9. Readjust the burner for proper operation.

3.2. CLEANING THE BLOCKED VENT SHUTOFF DEVICE (BVSO) (IF INSTALLED)

For continuous safe operation, the Blocked Vent Shut-off device (BVSO) must be inspected and maintained annually by a qualified service technician.

1. Disconnect power to the appliance;

2. Remove the two screws holding on the BVSO assembly cover

and remove the cover;

3. Remove the two screws holding the control box to the heat

transfer tube assembly. Sliding the control box in the appropriate direction will unlock it from the heat transfer tube assembly;

4. Carefully remove any build-up from the thermal switch surface;

Do not dent or scratch the surface of the thermal switch. If the thermal switch is damaged it MUST be replaced.

5. Clean and remove any build-up or obstruction inside the heat

transfer tube;

6. Re-mount, lock and fasten the control box with the 2 screws

removed in step 4;

7. Re-attach the assembly cover with the screws removed in step

8. Re-establish power to the unit.

3.3. CLEANING OF THE BURNER HEAD

Once annually, remove the retention head and electrodes from the drawer assembly and remove all foreign matter, if necessary. Also clean the extremity of the burner tube, if necessary.

3.4. CHANGING THE NOZZLE

Change the nozzle once a year with the one specified in Table 11.

3.5. CHANGING THE OIL FILTER

Tank Filter

The tank filter should be changed as required. Follow the manufacturer’s instructions.

Secondary Filter

The 10 micron, or finer, filter cartridge should be changed annually. Follow the manufacturer’s instructions.

3.6. CHANGING THE AIR FILTER

Dirty filters have an impact on the efficiency of the furnace and increase fuel consumption. Air filters should be changed at least once a year. Very dusty conditions, the presence of animal hair and the like will require more frequent changing or cleaning.

11/13 13

PLB-112 Oil Furnaces – Furnace Manual

4. CHECKOUT PROCEDURE

Furnace selection

...1. Heat loss ............................... BTU/h at ............ °F

outdoor design temperature.

...2. Furnace model .......................................................................

Output ......................... BTU/h.

...3. Burner model ........................................................................

Nozzle: ............ GPH ............... ° type............... .

...4. Burner pump pressure ........................................ psig.

Furnace installation

...5. Is the furnace level and are all legs in contact with the

floor?

...6. Are return and supply ducts securely attached to

furnace?

...7. Are the fuel filter and fuel lines installed and inspected as

per the burner manual?

...8. Are furnace and burner wired as per the wiring diagram?

...9. 120 VAC wiring: type ................ size ................ AWG.

Vent and combustion air

...10 Was the existing chimney / vent system inspected and

found in proper condition?

...11 Was new vent piping installed and sealed as required?

...12 Was the vent sizing checked against furnace manual and

codes?

Ductwork

...13. Was the duct sizing checked against furnace manual

and / or ACCA Manual D?

...14. Were the supply and return registers checked for size

based on airflow?

...15. Were balancing dampers installed as needed?

...16. Was the ductwork sealed and insulated as needed?

Furnace operation

 ..17. Is a / are clean air filter(s) in place?

 ..18. Was the temperature rise through furnace checked (not

to exceed 85°F) and the blower speed adjusted if

necessary?

 ..19. Was the thermostat heat anticipator set per wiring

diagram?

 ..20. Was the burner started and tested per burner manual?

 ..21. Is there proper draft and burner flame? Were final

adjustments made with combustion test equipment?

 ..22. Was air purged from oil piping and piping checked for

leaks?

 ..23. Was burner sealed to furnace and nuts tightened? Was

burner harness securely plugged in?

Obtain gas-tight seals at burner flange, cleanout plates and/or flue collector box to prevent possible flue gas leakage and carbon monoxide emissions, leading to severe personal injury or death.

 ..24. Was limit control tested as per section 2.3.8. in this

manual?

 ..25. Was furnace cycled with thermostat? Rise to highest

setting and verify furnace goes through normal start up

cycle. Lower to lowest setting and verify furnace shuts off.

 ..26. Were several operating cycles observed for proper

operation?

 ..27. Were room thermostat(s) set to desired room

temperatures?

After installation

 ..28. Was “Installation and service certificate” (below) filled

out?

 ..29. Was Owner’s information in this manual reviewed with

owner or maintenance person and the person instructed

to keep the manual for future reference?

 ..30. Were all instruction manuals placed near the furnace for

future reference?

14 11/13

PLB-112 Oil Furnaces – Furnace Manual

4. CHECKOUT PROCEDURE (continued)

Furnace model _________________________________ Series _________________________________ Serial number __________________________________ Date installed ___________________________

 Installation instructions have been followed.

 Checkout sequence has been performed.

 Above information is certified to be correct.

 Information received and left with owner/maintenance person.

Installer ______________________ ________________________ ____________________

(Company) (Address) (Phone)

Installation and service certificate

11/13 15

5. DIMENSIONS AND RATINGS

Table 10: Model PLB-112-DD & PLB-112-VS Dimensional data – ALL DIMENSIONS IN INCHES

Model

PLB-112-DD 21" 48" 33" 19 ¾" 19 ¾" 19 ¾" 19 ¾" 5" PLB-112-VS 21" 48" 33" 19 ¾" 19 ¾" 19 ¾" 19 ¾" 5"

Model

PLB-112-DD

PLB-112-VS

Input

Model

PLB-112-DD

PLB-112-VS

(BTU/h)

95,200 81,100 0.68 MED-LOW MED-LOW 1090 1010

112,000 94,100 0.80 √ MED-HIGH MED-HIGH 1200 1160

95,200 81,100 0.68

112,000 94,100 0.80 √

Output

(BTU/h)

Furnace casing

Width Depth Height Width Depth Width Depth

Maximum

heating

temperature

rise (°F)

55° - 75°

60° - 72°

Firing

rate

(GPH)

Filter quantity

and size

1 x 20" x 20"

or 2 x 16" x 20"

1 x 20" x 20"

or 2 x 16" x 20"

Installed

nozzle

Blower size

12" x 9"

Tight Housing

12" x 9"

Tight Housing

Warm air supply (top)

Volt - Hertz

- Phase

115 - 60 - 1 12.6 15.2 20 195

115 - 60 - 1 12.2 14.7 15 195

Blower motor

1/2 HP

4 speeds

3/4 HP

ECM

Return air supply (side)

load

Minimum

ampacity

for wiring

Electrical

(amps)

Blower motor

Speed adjustment

0,25"w.c.@ 0,50"w.c.

sizing

Maximum fuse size

(amps)

Maximum

cooling

capacity

(tons)

Flue pipe

diam.

4.0

Ship

weight

(pounds)

Blower CFM

@ 0,25"w.c. @ 0,50"w.c.

See table 13

page 18.

16 11/13

PLB-112 Oil Furnaces – Furnace Manual

5. DIMENSIONS AND RATINGS (continued)

Table 11: Model PLB-112-DD & PLB-112-VS Burner data

BECKET BURNER; MODEL AFG (Chimney)

Firing

Model

PLB-112-DD

PLB-112-VS

Model

PLB-112-DD

PLB-112-VS

Input

BTU/h

112,000 0.80 86.3% 0.65 - 60B 150 No 3-3/8U 7/0

112,000 0.80

USGPH

(*)

95,200 0.68 87.1%

95,200 0.68

Input

BTU/h

(*)

95,200 0.68 87.0% 0.60 - 60W 140 No 3,0

112,000 0.80 85.9% 0.65 - 60W 150 No 3,5

95,200 0.68

112,000 0.80

AFUE

rate

(***)

(*)

87.1% ‡ 0.60 - 60W

86.3% ‡

Firing

rate

USGPH

(*)

Nozzle

(Delavan)

(**)

0.60 - 60W

0.65 - 60B 150 No 3-3/8U 7/0

BECKET BURNER; MODEL NX (Chimney or DV)

AFUE

(***)

87.0%‡ 0.60 - 60W

85.9% ‡

RIELLO BURNER; MODEL 40-F3(Chimney)

Input

Model

BTU/h

(*)

PLB-112-DD

PLB-112-VS

95,200 0.68 86.6% 0.60 - 70A 130 1/2,6

112,000 0.80 86.1% 0.70 - 70A 130 2/3,1

95,200 0.68 86.6% ‡ 0.60 - 70A 130 1/2,6

112,000 0.80 86.1% ‡ 0.70 - 70A 130 2/3,1

Input

Model

BTU/h

(*)

PLB-112-DD

PLB-112-VS

INPUT & OUTPUT ADJUSTMENT

- Pump pressure can be adjusted to maintain proper firing rate.

- Increase pump pressure if flue gases temperature are under 400°F.

- Adjust the total

** Default Installed Nozzle in bold characters *** AFUE values established after minimum 20 hours of operation.

95,200 0.68 87.5% 0.55 - 70A 155 60/,65 - 22 %

112,000 0.80 86.5% 0.65 - 70A 155 ,75 - 25 %

95,200 0.68 87.5% ‡ 0.55 - 70A 155 60/,65 - 22 %

112,000 0.80 86.1% ‡ 0.65 - 70A 155 ,75 - 25 %

flue gas temperature between 400°F and 575°F (330°F and 505°F net approximately)

Firing

rate

USGPH

(*)

Firing

rate

USGPH

(*)

Pump

pressure

(PSIG)

(*)

140 Yes (3708) 3-3/8U 8/0

Nozzle

(Delavan)

(**)

0.65 - 60W 150 No 3,5

Pump

pressure

(PSIG)

AFUE

(Delavan)

(***)

Low firing

Head

rate baffle

2 Slot

Head

(*)

6 Slot

140 No 3,0

Nozzle

(**)

Burner tube

Low firing

rate baffle

Pump

pressure

(PSIG)

(*)

insertion

length

(Inch)

1¾"

Burner tube

Burner

insertion

length

Static

disc

insertion

length

(Inch)

1¾"

tube

(Inch)

ATC

AFG70MQSS

ATC

NX56LQ

Head/Air

setting

Combustion air

adjustment (Turbulator

/Damper)

2¾"

CARLIN BURNER; MODEL EZ-LF

Burner

tube

insertion

length

(Inch)

Combustion air

adjustment

(Head/Air)

AFUE

(***)

Nozzle

(Delavan)

(**)

Pump

pressure

(PSIG)

(*)

1¾"

Head/Air

setting

C US

11/13 17

PLB furnaces are CSA design certified for installation on combustible flooring.

PLB-112 Oil Furnaces – Furnace Manual

5. DIMENSIONS AND RATINGS (continued)

Table 12: Airflow Data, Models with ½ HP PSC Motors

BLOWER

SPEED

HIGH

MED-HIGH

MED-LOW

LOW

0.2" (W.C.) 0.3" (W.C.) 0.4" (W.C.) 0.5" (W.C.) 0.6" (W.C.) 0.7" (W.C.)

1680 1640 1600 1590 1540 1460

1210 1190 1180 1160 1130 1110

1110 1070 1040 1010 970 930

960 940 920 890 860 830

EXTERNAL STATIC PRESSURE WITH AIR FILTER

Table 13: Airflow Data, Models with ¾ HP ECM Motors

OIL HEATING MODE

24 VAC input (R) on W only

SW1- HEAT

DIP switch position

(1=OFF, 2=OFF) 0.68 1160 1275 1045

(1=ON, 2=OFF) 0.80 1340 1475 1205

B C

(1=OFF, 2=ON)* (1=ON, 2=ON)* 0.80 1160 1275 1045

HEAT INPUT

(USGPH)

CFM with SW3-ADJ

DIP switch position A

CFM with SW3-ADJ

DIP switch position B

0.68 1000 1100 900

* Alternate adjustment in oil-fired heating mode for higher temperature rise

CONTINUOUS FAN

24 VAC input (R) on G only

SW2- COOL

DIP switch position

(1=OFF, 2=OFF) (1=ON, 2=OFF) 3.5 1050 1210 875

(1=OFF, 2=ON) 3.0 900 1035 765

(1=ON, 2=ON) 2.5 750 865 640

A/C size

(TON)

CFM with SW3-ADJ

DIP switch position A

CFM with SW3-ADJ

DIP switch position B

4.0 1200 1380 1020

COOLING OR HEAT PUMP HE ATING MODE

24 VAC input (R) to G, Y/Y2 and O (for cooling)

SW2- COOL

DIP switch position

(1=OFF, 2=OFF) 4.0 1600 1750 1440 (1=ON, 2=OFF) 3.5 1400 1540 1260

B C

(1=OFF, 2=ON) (1=ON, 2=ON) 2.5 1000 1100 900

A/C size

(TON)

CFM with SW3-ADJ

DIP switch position A

CFM with SW3-ADJ

DIP switch position B

3.0 1200 1320 1080

In Cooling - Dehumidification mode, with no 24 VAC input to DH, the CFMs are reduced by 15%. The CFMs shown are reduced by 20% if there is 24 VAC input to Y1 (first stage cooling mode)

DELAY PROFILE FOR OIL HEATING MODE

CFM with SW3-ADJ

DIP switch position C

CFM with SW3-ADJ

DIP switch position C

CFM with SW3-ADJ

DIP switch position C

SW4- DELAY

DIP switch position

(1=OFF, 2=OFF) 0.68 13% - 45 sec. 19% - 60 sec 38% - 3 min.

(1=ON, 2=OFF) 0.80 13% - 45 sec. 19% - 30 sec 38% - 3 min.

B C

(1=OFF, 2=ON) (1=ON, 2=ON) All 13% - 90 sec. 100% - 0 sec 100% - 2 min.

HEAT INPUT

(USGPH)

All 13% - 45 sec. 100% - 0 sec 100% - 2 min.

PreRun and ShortRun are the periods of time when the the blower starts at very low CFM to minimize the distributon of cool air in the system and then runs up to normal speed. Off Delay is the time required to cool down the heat exchanger with low CFMs, to minimize cool draft in the air distribution system.

DELAY PROFILE FOR COOLING OR HEAT PUMP HEATING MODE

No adjustment

required

A/C size

- All NO DELAY NO DELAY 100% - 90 sec

NOTE:

Disconnect main power to unit prior to changing DIP switch settings.

18 11/13

PreRun On-Delay

CFM Level - Time

PreRun On-Delay CFM Level - Time

ShortRun On-Delay

CFM Level - Time

ShortRun On-Delay

CFM Level - Time

Off-Delay

CFM Level - Time

Off-Delay

CFM Level - Time

PLB-112 Oil Furnaces – Furnace Manual

5. DIMENSIONS AND RATINGS (continued)

Figure 9: Wiring Diagram - 4 Speed Motor (PSC)

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PLB-112 Oil Furnaces – Furnace Manual

5. DIMENSIONS AND RATINGS (continued)

Figure 10: Wiring Diagram - Variable Speed Motor (ECM)

20 11/13

PLB-112 Oil Furnaces – Furnace Manual

6. COMPONENT AND REPLACEMENT PARTS

Figure 11: Parts List - With 4 Speed motor PSC

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PLB-112 Oil Furnaces – Furnace Manual

6. COMPONENT AND REPLACEMENT PARTS (continued)

Table 14: Parts List - With 4 Speed motor PSC

Item Part Description Comments

1 B03690 HEAT EXCHANGER ASSEMBLY Heat exchanger only 2 J06L002 SEAL STRIP DIA 1/8" DIA X 25' 3 B03696 FLOOR ASSEMBLY 4 B03709 WIRE CHANNEL, INT 5 B03695-01 LOWER BLOWER DIVIDER ASSEMBLY Panel, 3 gaskets and baffle included 6 B03719 CENTER BLOWER DIVIDER 7 B03708 SIDE BAFFLE 8 B03694-04 LEFT SIDE PANEL ASSEMBLY Panel, insulation and baffle included

9 B03714-02 LEFT SIDE PANEL INSULATION 10 B03711-02 LEFT ANGLE FILTER RACK 11 B03710 SIDE FILTER RACK 12 Z04F004 PAPER FILTER 20 X 20 X 1 13 B03697-01 BLOWER DOOR ASSEMBLY Door, handle and label included 14 Z99F050 HANDLE, RECESSED BLACK 15 B03577-01 REAR FILTER DOOR ASSEMBLY 16 F07O001 HEX FLANGE NUT 3/8-16NC LAITON 17 B01697 FLUE OUTLET FLANGE, 5" DIA. 18 B01214 GASKET, SMOKE PIPE COVER 19 B03988 TOP REAR PANEL ASSEMBLY Panel and label included 20 B03718 REMPLACEMENT SOUND TRAP ASSEMBLY 2 sections included 21 B03712 OUTLET PROTECTOR 22 B03705 TOP DIVIDER 23 B03694-03 RIGHT SIDE PANEL ASSEMBLY Panel, insulation and baffle included 24 B03714-01 RIGHT SIDE PANEL INSULATION 25 B03711-01 RIGHT ANGLE FILTER RACK 26 B03553-01 ELECTRICAL BOX SPACER 27 B03549-01 ELECTRICAL BOX 28 R02R003 HIGH LIMIT L195-30F, 1.75 in. 29 B03550-01 ELECTRICAL BOX COVER Panel only 30 F06F015 ZINC WASHER 1 7/16" 31 Z99F061 SIGHT GLASS FOR HEAT EXCHANGER 32 B03587 CLEAN OUT ASSEMBLY Item #37 included 33 B03574-03 PROTECTION COVER ASSEMBLY cover and labels included 34 B03428 GASKET, SMOKE OUTLET 35 F07F011 HEX NUT 3/8-16NC ZINC 36 B03567 BAFFLE One baffle uncluded 37 B03596-01 BURNER WIRE CHANEL 38 B03554-01 WIRE CHANEL 39 L04I010 STRAIN REL. BUSHING 40 B03573-01 FRONT PANEL ASSEMBLY Panel and insulation uncluded 41 B03590 FRONT PANEL INSULATION 42 L07F003 SWITCH SPST 43 B03555 THERMO DISK PROTECTOR 44 B03465 ELECTRICAL KIT (BOARD) 45 R99G004 ELECTRONIC BOARD 1158 46 L01F009 TRANSFORMER 120-24Volts, 40VA 47 B01024 CAPACITOR HOLDER 48 L01I002 CAPACITOR 7,5 MF 49 B01664 ELECTRICAL KIT 50 L06H004 MOTOR 1/2 HP, 4 SPEEDS DD 51 B01889 MOTOR MOUNT ASSEMBLY Legs, band and hardware included 52 B03713 BLOWER SUPPORT 53 B03720-06 BLOWER 120-9T DD 0.50 PP Housing, wheel and label included 54 B03717-01 REPLACEMENT BLOWER ASSEMBLY Blower, motor and capacitor included 55 L01G009 CONTROL CARD FUSE - 3 AMPS

VTK-54 IFV-410 IFV-415 IFV-420

VENT TERMINAL KIT 4'' For sealed combustion 4" INSULATED FLEX VENT 10ft For sealed combustion 4" INSULATED FLEX VENT 15ft For sealed combustion 4" INSULATED FLEX VENT 20ft For sealed combustion

ACCESSORIES

B50128A

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PLB-112 Oil Furnaces – Furnace Manual

6. COMPONENT AND REPLACEMENT PARTS (continued)

Figure 12: Parts List - With variable speed motor ECM

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PLB-112 Oil Furnaces – Furnace Manual

6. COMPONENT AND REPLACEMENT PARTS (continued)

Table 15: Parts List - With variable speed motor ECM

Item Part Description Comments

9 B03714-02 LEFT SIDE PANEL INSULATION 10 B03711-02 LEFT ANGLE FILTER RACK 11 B03710 SIDE FILTER RACK 12 Z04F004 PAPER FILTER 20 X 20 X 1 13 B03697-01 BLOWER DOOR ASSEMBLY Door, handle and labels included 14 Z99F050 HANDLE, RECESSED BLACK 15 B03577-01 REAR FILTER DOOR ASSEMBLY 16 F07O001 HEX FLANGE NUT 3/8-16NC LAITON 17 B01697 FLUE OUTLET FLANGE, 5" DIA. 18 B01214 GASKET, SMOKE PIPE COVER 19 B03988 TOP REAR PANEL ASSEMBLY Panel and label included 20 B03718 REMPLACEMENT SOUND TRAP ASSEMBLY 2 sections included 21 B03712 OUTLET PROTECTOR 22 B03705 TOP DIVIDER 23 B03694-03 RIGHT SIDE PANEL ASSEMBLY Panel, insulation and baffle included 24 B03714-01 RIGHT SIDE PANEL INSULATION 25 B03711-01 RIGHT ANGLE FILTER RACK 26 B03553-01 ELECTRICAL BOX SPACER 27 B03534-01 ELECTRICAL BOX 28 R02R003 HIGH LIMIT L195-30F, 1.75 in. 29 B03550-01 ELECTRICAL BOX COVER Panel only 30 F06F015 ZINC WASHER 1 7/16" 31 Z99F061 SIGHT GLASS FOR HEAT EXCHANGER 32 B03587 CLEAN OUT ASSEMBLY Item #37 included 33 B03574-03 PROTECTION COVER ASSEMBLY Cover and labels included 34 B03428 GASKET, SMOKE OUTLET 35 F07F011 HEX NUT 3/8-16NC ZINC 36 B03567 BAFFLE One baffle uncluded 37 B03596-01 BURNER WIRE CHANEL 38 B03554-01 WIRE CHANEL 39 L04I010 STRAIN REL. BUSHING 40 B03573-01 FRONT PANEL ASSEMBLY Panel and insulation uncluded 41 B03590 FRONT PANEL INSULATION 42 B03555 THERMO DISK PROTECTOR 43 B03465 ELECTRICAL KIT (BOARD) 44 R99G003 ELECTRONIC BOARD #1168 45 L01F009 TRANSFORMER 120-24Volts, 40VA 46 B03243-01 ELECTRIC BLOWER KIT 47 B03242-01 ELECTRONIC BLOWER KIT 48 B03812-02 MOTOR 3/4 HP ECM 49 B01889 MOTOR MOUNT ASSEMBLY Band, legs, nut & bolts included 50 B03713 BLOWER SUPPORT 51 B03720-06 BLOWER 120-9T DD 0.5 PP Housing, wheel and label included 52 B03717-02 REPLACEMENT BLOWER ASSEMBLY Blower and motor included 53 L01G009 CONTROL CARD FUSE - 3 AMPS

ACCESSORIES

VTK-54 IFV-410 IFV-415 IFV-420

VENT TERMINAL KIT 4'' For sealed combustion 4" INSULATED FLEX VENT 10ft For sealed combustion 4" INSULATED FLEX VENT 15ft For sealed combustion 4" INSULATED FLEX VENT 20ft For sealed combustion

B50129A

24 11/13

PLB-112 Oil Furnaces – Furnace Manual

7. OWNER’S INFORMATION

The furnace must be inspected and started ANNUALLY, at the beginning of the heating season, only by a qualified service technician.

annual service and maintenance on the furnace to ensure reliable operation. Failure to service and maintain the furnace and system could result in equipment failure, causing severe personal injury, death or substantial property damage.

As the owner, you must be aware of the following requirements. You must inspect and clean or replace the furnace filter monthly, as described below, and perform the other inspection procedures as well. Failure to maintain a clean filter will result in cycling of the furnace and could lead to a no-heat condition. Failure to perform this maintenance could result in substantial property damage.

Follow all of the procedures below. Failure to comply could result in severe personal injury, death or substantial property damage.

Operating the furnace

1. The furnace should operate automatically on call for heat from the room thermostat.

2. If the furnace oil burner should shut down on flame failure, the burner primary control will lock out. Ask your service technician to show you the correct procedure to reset the primary control button. NEVER push the button more than once in an attempt to start the burner after lockout. Continued lockout of the control means something is wrong with the burner, controls or oil system. The condition must be corrected by a qualified service technician.

Daily inspection

1. Verify there are no combustible materials in the furnace room or near the furnace.

2. Verify the air openings to the furnace room are not obstructed in any way.

3. Verify the furnace seems to be operating normally. Notify your service technician immediately if you notice any abnormal behavior.

Monthly – inspect and clean/replace filter

1. Ask your service technician to show you the correct way to remove and clean your furnace filter. Replace the filter if you are unable to thoroughly clean it.

To shut down furnace

1. Set the room thermostat to its lowest setting.

2. Turn off the disconnect switch in the 120-VAC power line to the furnace.

3. If the burner will be shut down for an extended time, tightly close all oil valves.

4. Refer to burner manual for any additional instructions.

W-T Manufacturing 8201 W. Calumet Rd. •Milwaukee, WI 53223

The service technician must perform

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PLB-112 Oil Furnaces – Furnace Manual

26 X40207 Rev. B 11/13

Williamson-Thermoflo PLB-112 LOW-BOY User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual