Thermo Products OH11-105, OL39-320, OL33-200, OT5-85, OL20-151 User Manual

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OIL FIRED FURNACE

INSTALLATION AND OPERATION MANUAL

WITH USERS INFORMATION SECTION

MODELS:

OC2-56

OL2-56

OH2-56

OC5-85

OL5-85

OH3-72

 

OL11-105

OH5-85

OT5-85

OL16-125

OH11-105

OT11-105

OL20-151

OH16-125

OT16-125

OL33-200

 

 

OL37-250

 

 

OL39-320

 

? WARNING: IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

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

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

THERMO PRODUCTS, LLC.

 

PO BOX 217

 

NORTH JUDSON, IN 46366

 

PHONE: (574) 896-2133

MADE IN USA

MO-100G

ECN 4385-MA

I. SAFETY SECTION

This page contains various warnings and cautions found throughout the Oil Furnace Manual. Please read and comply with the statements below.

?WARNING AND CAUTIONS:

?WARNING: This furnace is not to be used as a construction heater. See Page 1.

? CAUTION MUST BE TAKEN NOT TO EXCEED 90° ROTATION (OF THE FLUE ELBOW) COUNTERCLOCKWISE FROM THE VERTICAL POSITION. See Page 2.

?WARNING: When cutting openings in the casing DO NOT CUT ANY SUPPORTING

CLIPS OR ANGLES. See Page 5.

?WARNING: The predetermined fan and limit locations on all of the Thermo Pride oil fired furnaces have been tested and approved by Thermo Products, LLC. in conjunction with Underwriters Laboratories, Inc. Any attempt to relocate these safety controls or replace these safety controls with a control that is not approved, or is incompatible, may result in personal injury, substantial property damage or death. See Page 6.

?WARNING: THE HEAT EXCHANGER MUST BE CLEANED BY A QUALIFIED SERVICE PERSON. See Page 11.

?CAUTION: DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF! See Page 13.

?WARNING: The area around the furnace should be kept free and clear of combustible liquids and material, especially papers and rags. See Page 13.

?WARNING: NEVER burn garbage or refuse in your furnace. Never try to ignite oil by tossing burning papers or other material into your furnace. See Page 13.

?WARNING: Thermo Products oil furnaces are designed to burn No. 1 or No. 2 distillate fuel oil. NEVER USE GASOLINE OR A MIXTURE OF OIL AND GASOLINE. See Page 13.

?CAUTION: DO NOT ATTEMPT TO START THE BURNER WHEN:

1.Excess oil has accumulated,

2.The furnace is full of vapors

3.The combustion chamber is very hot.

IF ONE OR MORE OF THESE CONDITIONS EXIST, CONTACT A QUALIFIED SERVICE PERSON. See Page 13.

i

Thermo Products OH11-105, OL39-320, OL33-200, OT5-85, OL20-151 User Manual

All installations and services must be performed by qualified service personnel.

This page contains reproductions of the various instruction and warning labels placed on the Thermo Pride Oil Furnaces. Please read and comply with the contents of these labels.

ii

All installations and services must be performed by qualified service personnel.

SECTION

TABLE OF CONTENTS

BEGINNING PAGE

 

I. SAFETY SECTION

i

II. GENERAL INSTRUCTIONS

1

A. DRAFT REGULATORS

3

B. DUCT WORK/AIR CONDITIONING

3

C. FILTERS MOUNTED EXTERNAL TO FURNACE

4

D. FAN AND LIMIT POSITION AND LOCATION

6

E. BURNER INSTALLATION

6

F. HORIZONTAL FURNACE POSITIONS

8

G. EXTERNAL WIRE HARNESS LOCATIONS

8

H. BURNER SPECIFICATIONS AND APPLICATIONS

9

I. HEAT EXCHANGER CLEANING INSTRUCTIONS

11

III. USERS INFORMATION SECTION

12

A. OIL SUPPLY

 

12

B. COMBUSTION AIR SUPPLY

12

C. INSPECTION AREAS

13

D. STARTING THE BURNER

13

E. FILTER CLEANING AND LOCATIONS

13

APPENDIX – A

REPLACEMENT PARTS LIST

16

APPENDIX – B

WIRING DIAGRAMS

26

iii

All installations and services must be performed by qualified service personnel.

II. GENERAL INSTRUCTIONS - READ BEFORE START OF INSTALLATION

1.The heating output capacity of the furnace proposed for installation should be based on a heat loss calculation made according to the manuals provided by the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE).

2.All local codes and/or regulations take precedence over the instructions in this manual and should be followed accordingly. In the absence of local codes, installation must conform with these instructions and regulations of the National Fire Protection Association, and to the provisions of the National Electrical Code (ANSI/NFPA 70-1999 or latest edition).

3.The installed furnace must be level and positioned in a central location with respect to outlet registers. It should be located near the chimney to minimize any horizontal run of flue pipe, which may be required.

4.A furnace installed in a residential garage must be installed so the burner and ignition source are located higher than 18 inches above the floor, unless the required combustion air is taken from the exterior of the garage. Also, the furnace must be located or protected to avoid physical damage by vehicles.

?WARNING: This furnace is not to be used as a construction heater.

5. Listed below are definitions of "COMBUSTIBLE MATERIAL" and "NON-COMBUSTIBLE MATERIAL."

COMBUSTIBLE MATERIAL:

Material made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material that will ignite and burn, whether flame resistant or not.

NON-COMBUSTIBLE MATERIAL:

Material that is not capable of being ignited and burned. Such materials consist entirely of, or a combination of, steel, iron, brick, tile, concrete, slate, or glass.

MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS

TYPE OF UNIT

MODEL

FROM SIDES

 

TOP &

FROM THE

 

FRONT

SIDES OF

REAR

NO.1

OF FURNACE

FLUE/VENT

 

 

 

 

 

PLENUM

 

 

 

OL2

1”

 

2”

1”

4”

1”

LOWBOYS

OL5,11,16

1”

 

24”

1”

6”

1”

OL20

1”

 

24”

1”

18”

1”

 

 

 

OL33,37,39

1”

 

24”

1”

18”

1”

 

OH3,11

1”

 

24”

1”

9”

1”

HIGHBOYS

OH5

1”

 

24”

1”

6”

1”

OH16

1”

 

24”

1”

9”

1”

 

 

 

OH2

1”

 

Note3

2”

9”

1”

COUNTERFLOWS

OC2

1”

 

4”

1”

6”

1”

OC5

1”

 

4”

1”

9”

1”

 

 

 

 

 

 

 

 

 

 

 

MODEL

FRONT

TOP

REAR

BOTTOM

FROM THE

ANY SIDE

TYPE OF UNIT

NO.1

 

 

 

 

FLUE/VENT

OF

 

 

 

 

 

 

 

PLENUM

HORIZONTALS2

OT5

24”

1”

1”

1”

4”

1”

OT11,16

24”

1”

1”

1”

9”

1”

 

Notes:

1The above

are abbreviated model numbers.

 

 

 

 

2Horizontal units are not approved for attic installation.

 

 

 

3OH2 front clearance for 6” for Closet, 18” for Alcove.

 

 

1

All installations and services must be performed by qualified service personnel.

The minimum clearances listed in the preceding table are for fire protection. Clearance for servicing the front of the furnace and the rear of the lowboy models should be at least 24 inches. A clearance of 24 inches is recommended for passage to all points on the furnace requiring service access.

The OH2-3-5-11-16 furnaces may be installed on combustible flooring. The OL2-5-11-16-20-33-37-39 and OC2-5 furnaces are to be installed on non-combustible flooring only. A non-combustible floor base is available for the counterflow models OC2-5, which then allows these models to be adapted for installation on combustible flooring (use non-combustible floor base Model No.125 for OC5, Model No 56 for OC2).

NOTE: The OH2 furnace is approved for closet installation. If the OH2 is installed in a closet, it requires two openings in the closet door for combustion air, each having a minimum area of 162 sq. inches. This free area for the OH2 intentionally exceeds the recommended minimum free area of 2 square inches per 1000 BTUH of input rate.

NOTE: When power venting a Thermo Pride oil fired furnace with a power venting system other than the system supplied by Thermo Pride, a fiber chamber and an isolated combustion air kit (PVB or Beckett boot) is to be used with the other manufacturers power venting system.

NOTE: On the front flue, lowboy, all highboy or counterflow models, it is possible to rotate the flue elbow (which is factory installed for vertical discharge) 90° counterclockwise from the vertical position to adapt to various venting systems. (See following page for details)

? CAUTION MUST BE TAKEN NOT TO EXCEED 90° ROTATION (OF THE FLUE ELBOW) COUNTERCLOCKWISE OR RIGHT FROM THE VERTICAL POSITION.

ROTATION OF FRONT FLUE ELBOW

When an installation requires that the flue exit out the left hand side casing on a front flue unit, remove screw securing the 90 deg. elbow and rotate it 90° counterclockwise. Then, by following dimensions in Table 1, locate the center point for the exit of the flue for the particular size furnace. Once the center has been located, use a scribe to mark the hole size, listed in the chart, which corresponds with the furnace being used. Cut hole out and extend flue through side casing.

A trim collar may be ordered from Thermo Products to hide the gap around the flue pipe. This trim collar, however, is not required for operation.

2

All installations and services must be performed by qualified service personnel.

NOTE: ROTATION OF FLUE PIPE IS ONLY ALLOWED FOR LEFT HAND SIDE VENTING APPLICATIONS.

TABLE 1: Suggested sizes and positions of flue pipe opening on left hand side of casing.

 

 

 

 

 

TRIM COLLAR/

UNIT

DIA. HOLE

“X” DIM.

“Y” DIM.

FLUE DIA.

GASKET PART #

OC2

5-1/2”

3-5/8”

28-3/8”

5”

14121/330073

OC5

6-1/2”

4-3/4”

31-7/16”

6”

14131/330005

OH2

5-1/2”

3/5/8”

28-3/8”

5”

14121/330073

OH3

6-1/2”

4-9/16”

32-3/16”

6”

14131/330005

OH5

6-1/2”

4-3/4”

33-1/16”

6”

14131/330005

OH11

6-1/2”

4-3/4”

35-1/4”

6”

14131/330005

OH16

7-1/2”

4-5/16”

41-3/8”

7”

14132/330006

OL2*

5-1/2”

3-5/8”

28-5/16”

5”

14121/330073

OL5*

6-1/2”

4-5/8”

34-15/16”

6”

14131/330005

OL11*

6-1/2”

4-1/2”

37-5/8”

6”

14131/330005

OL16*

7-1/2”

4-1/2”

39-1/8”

7”

14132/330006

OL20*

7-1/2”

4-1/2”

43-1/4”

7”

14132/330006

*FRONT FLUE MODELS ONLY

“X” DIMENSION IS MEASURED FROM SEPARATOR PANEL.

“Y” DIMENSION IS MEASURED FROM THE BLOWER PAN ON “H” MODELS AND FROM THE BASE ON “L” AND “C” MODELS.

Fig 1: Recommended location for drilling hole to connect vent pipe to the furnace through the left hand side casing.

A. DRAFT REGULATORS:

A draft regulator is supplied with the furnace and should be installed according to the regulator manufacturers recommendations. With the burner operating, use a draft gauge to adjust the regulator to the proper setting. (refer to the instructions enclosed with draft regulator to adjust to the proper setting). When the burner air supply and draft are properly adjusted, the overfire draft should be a negative (-).01" to (-).02" WC, as measured at the 5/16" overfire air tap (See Fig. T). This tap is provided in the upper burner mounting plate. To measure the flue draft, punch a small hole in the vent connector pipe as close to the furnace as possible and always before the draft regulator.

B. DUCT WORK/AIR CONDITIONING:

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

3

All installations and services must be performed by qualified service personnel.

The duct system should again follow the current design standard of Air Conditioning Contractors of America (ACCA) or ASHRAE Fundamentals volume.

The most common location for the A-shaped coil (A style) is shown in Fig. 2.

Fig 2: Acceptable locations for the air conditioner evaporator coil.

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

A slab coil (H-style) is available for the horizontal air flow application on the OT5-11-16 furnaces refer to Fig. 3.

Fig. 3: An acceptable location for the air conditioner evaporator coil when used with a horizontal furnace.

To obtain proper airflow with an air conditioning coil installed on a belt drive unit, the motor and/or blower pulley may need to be changed. On a direct drive unit, the blower motor speed may need to be changed depending upon the size of the air conditioning system installed and the airflow resistance of the duct system.

NOTE: The horizontal units have direct drive blowers and no pulley or motor change is required.

C. FILTERS MOUNTED EXTERNAL TO THE FURNACE:

The filters of the OC2-5 mount in the return air plenum on the top opening on the top of the furnace. (For installation detail, see figure 4).

Fig. 4: Air filter mounting location for the OC2-5 furnace.

4

All installations and services must be performed by qualified service personnel.

On highboy furnaces, it is necessary to cut the return air opening in the side or rear casing, depending upon the needs of the specific installation.

The filter rack provided with the furnace, refer to Fig. 5, will serve as a template to scribe a mark for the return air opening on the casing. Place the filter rack on the casing one inch up from the bottom of the furnace and centered from side to side. Place the securing flange against the casing when locating the return air opening.

Fig. 5: A typical filter rack and dimensions for the highboy furnaces.

PLEASE NOTE: While scribing the return air opening, the filter rack can be held in position by tape or similar temporary means.

Position the open end of the filter rack so as to provide access for filter replacement. Once the filter rack is positioned correctly, scribe a line along the inside of the securing flange on three of the sides. To scribe a line on the fourth side (the open end), use the open end support as a guide.

Remove the filter rack and cut the return air opening in the casing. Now the filter rack can be anchored to the furnace with screws or pop-rivets through the securing flange of the filter rack.

?WARNING: When cutting openings in the casing DO NOT CUT ANY SUPPORTING CLIPS OR ANGLES. Cut as close to the scribed line as possible, but do not cut the base clip or blower pan support angle. (See Fig. 6).

Fig. 6: Cutaway view of fan section of a typical highboy furnace.

Connect the return air plenum to the filter rack and slide the filter into place. Dimensions for adapting the return air plenum to the filter rack are provided on the bottom of the previous page.

5

All installations and services must be performed by qualified service personnel.

D. FAN AND LIMIT POSITION AND LOCATION

?WARNING: The predetermined fan and limit locations on all of the Thermo Pride oil fired furnaces have been tested and approved by Thermo Products, LLC. in conjunction with Underwriters Laboratories, Inc. Any attempt to relocate these safety controls or replace these safety controls with a control that is not approved, or is incompatible, may result in personal injury, substantial property damage or death.

The units listed in the table below must have the fan and limit control installed at the time of unit installation. A locating bracket is provided with each of the units below.

TABLE 2: Installation location of the fan and limit control for each furnace

Fig. 7: Fan and limit location for lowboys, horizontal units and highboys.

FAN & LIMIT LOCATION FOR HORIZONTAL UNITS WITH AIR CONDITIONING COIL:

The fan & limit control should be mounted between the H-coil cabinet and furnace. For distances from top of plenum and furnace, see Fig. 7. IMPORTANT: Do not try to mount fan/limit in H-coil cabinet.

NOTE: The OL2, OC2 and OH2 only, come standard with an oil filter packaged with the furnace. This filter has the capacity of filtering down to a 10 micron particle. This is to assure the small diameter burner nozzles in the low heating capacity furnaces are installed with a fine filter to help prevent nozzle clogging.

E. BURNER INSTALLATION:

NOTICE: Remove all cardboard packing from around chamber before installing burner.

6

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