Modine Manufacturing PTS, BTS150, BTS175, BTS200, BTS250 Service Manual

...

6-561

5H080106A

June, 2008

INSTALLATION AND SERVICE MANUAL

separated combustion gas-fired unit heaters

model PTS and BTS

All models approved for use in California by the CEC, in New York city by the MEA division, and in Massachusetts. Unit heater is certified for non-residential applications.

FOR YOUR SAFETY

The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous.

WARNING

1. Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death, and could cause exposure to substances which have been determined by various state agencies to cause cancer, birth defects or other reproductive harm. Read the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment.

2. Do not locate ANY gas-fired units in areas where chlorinated, halogenated, or acid vapors are present in the atmosphere. These substances can cause premature heat exchanger failure due to corrosion, which can cause property damage, serious injury, or death.

FOR YOUR SAFETY

WHAT TO DO IF YOU SMELL GAS:

1. Open windows.

2. Do not try to light any appliance.

3. Do not touch any electrical switch; do not use any phone in your building.

4. Extinguish any open flame.

5. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. If you can not reach your gas supplier, call your fire department.

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.

ImpORTANT

The use of this manual is specifically intended for a qualified installation and service agency. All installation and service of these units must be performed by a qualified installation and service agency.

Inspection on Arrival

1. Inspect unit upon arrival. In case of damage, report it immediately to transportation company and your local Modine sales representative.

Check rating plate on unit to verify that power supply meets

available electric power at the point of installation.

3. Inspect unit upon arrival for conformance with description of product ordered (including specifications where applicable).

Table of Contents

Inspection on Arrival. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Special Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SI (Metric) Conversion Factors . . . . . . . . . . . . . . . . . . . . . . . . 3

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Unit Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Combustible Material and Service Clearances . . . . . . . . . . 4

Unit Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Gas Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installation with Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . 13

Requirements/Adjustments and Data for Blower Units. . 13-17

Start-Up Procedure/Operation . . . . . . . . . . . . . . . . . . . . . . . . 18

Unit Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Performance Data - General . . . . . . . . . . . . . . . . . . . . . . . . . 20

Performance Data - Downturn Hoods . . . . . . . . . . . . . . . . . . 21

Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23

Service/Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Serial/Model Number/Replacement Parts . . . . . . . . . . . . . . . 25

Commercial Warranty. . . . . . . . . . . . . . . . . . . . . . . . Back Cover

THIS MANUAL IS THE PROPERTY OF THE OWNER.

SPECIAL PRECAUTIONS

THE INSTALLATION AND MAINTENANCE INSTRUCTIONS IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE SAFE, EFFICIENT AND TROUBLE-FREE OPERATION. IN ADDITION, PARTICULAR CARE MUST BE EXERCISED REGARDING THE SPECIAL PRECAUTIONS LISTED BELOW. FAILURE TO PROPERLY ADDRESS THESE CRITICAL AREAS COULD RESULT IN PROPERTY DAMAGE OR LOSS, PERSONAL INJURY, OR DEATH. THESE INSTRUCTIONS SUBJECT TO ANY MORE RESTRICTIVE LOCAL OR NATIONAL CODES.

HAZARD INTENSITY LEVELS

1. DANGER: Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.

2. WARNING: Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury.

3. CAUTION: Indicates a potentially hazardous situation which,

if not avoided, MAY result in minor or moderate injury.

4. IMPORTANT: Indicates a situation which, if not avoided, MAY result in a potential safety concern.

DANGER

Appliances must not be installed where they may be exposed to a potentially explosive or flammable atmosphere.

WARNING

1. Gas fired heating equipment must be vented - do not operate unvented.

2. A built-in power exhauster is provided - additional external power exhausters are not required or permitted.

3. If you are replacing an existing heater, it may be necessary to resize the venting systems. Improperly sized venting systems can result in vent gas leakage or the formation of condensate. Refer to the National Fuel Gas Code ANSI Z223.1 or CSA B149.1 latest edition. Failure to follow these instructions can result in injury or death.

4. Under no circumstances should two sections of double wall vent pipe be joined together within one horizontal vent system due to the inability to verify complete seal of inner pipes.

5. All field gas piping must be pressure/leak tested prior to operation. Never use an open flame. Use a soap solution or equivalent for testing.

6. Gas pressure to appliance controls must never exceed 14" W.C. (1/2 psi).

7. To reduce the opportunity for condensation, the minimum sea level input to the appliance, as indicated on the serial plate, must not be less than 5% below the rated input, or 5% below the minimum rated input of dual rated units.

8. Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage.

9. All appliances must be wired strictly in accordance with

wiring diagram furnished with the appliance. Any wiring different from the wiring diagram could result in a hazard

to persons and property.

10. Any original factory wiring that requires replacement must be replaced with wiring material having a temperature rating of at least 105°C.

11. Ensure that the supply voltage to the appliance, as indicated on the serial plate, is not 5% greater than the rated voltage.

WARNING

12. When servicing or repairing this equipment, use only factory-approved service replacement parts. A complete replacements parts list may be obtained by contacting the factory. Refer to the rating plate on the appliance for complete appliance model number, serial number, and company address. Any substitution of parts or controls not approved by the factory will be at the owners risk.

CAUTION

1. All literature shipped with this unit should be kept for future use for servicing or service diagnostics. Do not discard any literature shipped with this unit.

2. Consult piping, electrical, and venting instructions in this

manual before final installation.

3. Do not attach ductwork, air filters, or polytubes to any propeller unit heater.

4. Clearances to combustible materials are critical. Be sure to follow all listed requirements.

5. Heaters are designed for use in heating applications with ambient temperatures between -40°F and 90°F.

6. Do not install unit outdoors.

7. In garages or other sections of aircraft hangars such as offices and shops that communicate with areas used for servicing or storage, keep the bottom of the unit at least 7' above the floor unless the unit is properly guarded to provide user protection from moving parts. In parking garages, the unit must be installed in accordance with the standard for parking structures ANSI/NFPA 88A, and in repair garages the standard for repair garages NFPA #88B. In Canada, installation of heaters in airplane hangars must be in accordance with the requirements of the enforcing authority, and in public garages in accordance with the current CSA-B149 codes.

8. In aircraft hangars, keep the bottom of the unit at least 10' from the highest surface of the wings or engine enclosure of the highest aircraft housed in the hangars and in accordance with the requirements of the enforcing authority and/or NFPA 409-latest edition.

9. Installation of units in high humidity or salt water atmospheres will cause accelerated corrosion resulting in a reduction of the normal life of the units.

10. Do not install units below 7' measured from the bottom of the unit to the floor in commercial applications (unless unit is properly guarded to provide user protection from moving parts).

11. Be sure no obstructions block air intake and discharge of

unit heaters.

12. The minimum distance from combustible material is based on the combustible material surface not exceeding 160°F. Clearance from the top of the unit may be required to be greater then the minimum specified if heat damage, other than fire, may occur to materials above the unit heater at the temperature described.

13. Allow 18" of clearance at rear (or 12" beyond end of motor at rear of unit, whichever is greater) and access side to provide ample air for proper operation of fan.

14. Installation must conform with local building codes or in the absence of local codes, with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) - latest edition. In Canada installation must be in accordance with CSA-B149.1.

15. The concentric vent adapter box must be installed inside of the structure or building. Do not install this box on the exterior of a building or structure.

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SPECIAL PRECAUTIONS / SI (METRIC) CONVERSION FACTORS

BEFORE YOU BEGIN

CAUTION

16. Purging of air from gas supply line should be performed as described in ANSI Z223.1 - latest edition “National Fuel Gas Code”, or in Canada in CSA-B149 codes.

17. When leak testing the gas supply piping system, the appliance and its combination gas control must be isolated during any pressure testing in excess of 14" W.C. (1/2 psi).

18. The unit should be isolated from the gas supply piping system by closing its field installed manual shut-off valve. This manual shut-off valve should be located within 6’ of the heater.

19. Turn off all gas before installing appliance.

20. Ensure that the supply voltage to the appliance, as indicated on the serial plate, is not 5% less than the rated voltage.

21. Check the gas inlet pressure at the unit upstream of the

combination gas control. The inlet pressure should be 6-7” W.C. on natural gas or 12-14” W.C. on propane. If inlet pressure is too high, install an additional pressure regulator upstream of the combination gas control.

22. Servicing or repairing of this equipment must be performed by a qualified service agency.

23. Do not attempt to reuse any mechanical or electronic ignition controllers which has been wet. Replace defective controller.

ImpORTANT

1. To prevent premature heat exchanger failure, do not locate ANY gas-fired appliances in areas where corrosive vapors (i.e. chlorinated, halogenated or acid) are present in the atmosphere.

2. To prevent premature heat exchanger failure, the input to the appliance as indicated on the serial plate, must not exceed the rated input by more then 5%.

3. To prevent premature heat exchanger failure, observe

heat exchanger tubes. If the tubes become red while blower and furnace are in operation, check to be sure the blower has been set to the proper rpm for the application. Refer to page 14 for Blower Adjustments.

4. Start-up and adjustment procedures should be performed

by a qualified service agency.

5. To check most of the Possible Remedies in the trouble- shooting guide listed in Table 24.1 refer to the applicable sections of the manual.

1. All literature shipped with this unit should be kept for future use for servicing or service diagnostics. Leave manual with the owner. Do not discard any literature shipped with this unit.

2. Consult piping, electrical, and venting instructions in this manual before final installation.

3. Do not attach ductwork, air filters, or polytubes to any propeller unit heater.

In the U.S., the installation of these units must comply with the “National Fuel Gas Code,” ANSI Z223.1, latest edition (also known as NFPA 54) and other applicable local building codes. In Canada, the installation of these units must comply with local plumbing or waste water codes and other applicable codes and with the current code CSA-B149.1.

1. All installation and service of these units must be performed by a qualified installation and service agency only as defined in ANSI Z223.1, latest edition or in Canada by a licensed gas fitter.

2. This unit is certified with the controls furnished. For replacements parts, please order according to the replacement parts list on serial plate. Always know your model and serial numbers. The right is reserved to substitute other authorized controls as replacements.

3. Unit is balanced for correct performance. Do not alter fan

or operate motors at speeds below what is shown in this manual.

4. Information on controls is supplied separately.

5. The same burner is used for natural and propane gas.

SI (Metric) Conversion Factors

To Convert Multiply By To Obtain

°F (°F-32) x 5/9 °C BTU 1.06 kJ Btu/ft3 37.3 kJ/m Btu/hr 0.000293 kW CFH (ft3/hr) 0.000472 m3/min CFH (ft3/hr) 0.00000787 m3/s CFM (ft3/min) 0.0283 m3/min CFM (ft3/min) 0.000472 m3/s feet 0.305 m Gal/Hr. 0.00379 m3/hr Gal/Hr. 3.79 l/hr gallons 3.79 l Horsepower 746 W inches 25.4 mm pound 0.454 kg psig 6.89 kPa psig 27.7 "W.C.

"W.C. 0.249 kPa

CAUTION

6-561

UNIT LOCATION

DANGER

Appliances must not be installed where they may be exposed to a potentially explosive or flammable atmosphere.

CAUTION

1. Clearances to combustible materials are critical. Be sure to follow all listed requirements.

2. Heaters are designed for use in heating applications with ambient temperatures between -40°F and 90°F.

3. Do not install unit outdoors.

4. In garages or other sections of aircraft hangars such

as offices and shops that communicate with areas used for servicing or storage, keep the bottom of the unit at least 7' above the floor unless the unit is properly guarded. In parking garages, the unit must be installed in accordance with the standard for parking structures ANSI/NFPA 88A, and in repair garages the standard for repair garages

NFPA #88B. In Canada, installation of heaters in airplane hangars must be in accordance with the requirements of the enforcing authority, and in public garages in accordance with the current CSA-B149 codes.

5. In aircraft hangars, keep the bottom of the unit at least

10' from the highest surface of the wings or engine enclosure of the highest aircraft housed in the hangars

and in accordance with the requirements of the enforcing authority and/or NFPA 409-latest edition.

6. Installation of units in high humidity or salt water

atmospheres will cause accelerated corrosion resulting in a reduction of the normal life of the units.

ImpORTANT

To prevent premature heat exchanger failure, do not locate ANY gas-fired appliances in areas where corrosive vapors (i.e. chlorinated, halogenated or acid) are present in the atmosphere.

Location Recommendations

1. When locating the heater, consider general space and heating requirements, availability of gas and electrical supply, and proximity to vent locations.

2. When locating units, it is important to consider that the combustion air and exhaust vent piping must be connected to the outside atmosphere. Vent terminals should be located adjacent to one another. Maximum equivalent vent lengths are listed in “Section A - General Instruction - All Units” of the Venting instructions.

3. Be sure the structural support at the unit location site is adequate to support the unit's weight. Refer to pages 22-23 for unit weights. For proper operation the unit must be installed in a level horizontal position.

4. Do not install units in locations where the flue products can be drawn into the adjacent building openings such as windows, fresh air intakes, etc.

5. Be sure that the minimum clearances to combustible materials and recommended service clearances are maintained. Units are designed for installation with the minimum clearances as shown in Figure 4.1 and Table 4.1.

Figure 4.1 - Combustible Material and Service Clearances

Table 4.1 - Clearances

Unit Side

Combustible Materials Service Clearance

Top and Bottom 6" 6" Access Side 6" 18" Non-Access Side 6" 6" Rear 18" 18" Vent Connector 6" 6"

6. Do not install units in locations where gas ignition system is exposed to water spray, rain, or dripping water.

7. Mounting Height (measured from bottom of unit) at which unit heaters are installed is critical. Refer to mounting height and heat throw data on page 20 of this manual. The maximum mounting height for any unit is that height above which the unit will not deliver heated air to the floor.

Clearance To Recommended

Sound and Vibration Levels

All standard mechanical equipment generates some sound and vibration that may require attenuation. Libraries, private offices and hospital facilities will require more attenuation, and in such cases, an acoustical consultant may be retained to assist in the application. Locating the equipment away from the critical area is desirable within ducting limitations. Generally, a unit should be located within 15 feet of a primary support beam. Smaller deflections typically result in reduced vibration and noise transmission.

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UNIT MOUNTING

1. Be sure the means of suspension is adequate to support the weight of the unit (see pages 22-23 for unit weights).

2. For proper operation, the unit must be installed in a level horizontal position.

3. Clearances to combustibles as specified in Table 4.1 must be strictly maintained.

4. All standard units are shipped fully boxed. Larger units are also supplied with skid supports on the bottom of the box. The larger units may be lifted from the bottom by means of a fork lift or other lifting device only if the shipping support skids are left in place and the forks support the whole depth of the unit. If the unit must be lifted from the bottom for final installation without the carton in place, be sure to properly support the unit over its entire length and width to prevent damage. When lifting units, make sure the load is balanced.

5. Propeller models have four mounting holes and blower models have six mounting holes. The units can be mounted with 3/8-16 threaded rod as follows:

• On each piece of threaded rod used, screw a nut a distance

of about one inch onto the end of the threaded rods that will be screwed into the unit heater.

• Place a washer over the end of the threaded rod and screw

the threaded rod into the unit heater weld nuts on the top of the heater at least 5 turns, and no more than 10 turns. Tighten the nut first installed onto the threaded rod to prevent the rod from turning.

• Drill holes into a steel channel or angle iron at the same

center-line dimensions as the heater that is being installed. The steel channels or angle iron pieces need to span and be fastened to appropriate structural members.

• Cut the threaded rods to the preferred length, place them

through the holes in the steel channel or angle iron and secure with washers and lock nuts or lock washers and nuts. A double nut arrangement can be used here instead of at the unit heater (a double nut can be used both places but is not necessary).

• Do not install standard unit heaters above the maximum

mounting height shown in Tables 20.1 or 20.2.

NOTE: A pipe hanger adapter kit, shown in Figure 5.1 is

available as an accessory. One kit consists of two drilled 3/4” IPS pipe caps and two 3/8 - 13 x 1-3/4” capscrews to facilitate threaded pipe suspension. Two kits would be required for PTS units and 3 kits for BTS units.

Figure 5.1 - Unit Heater Suspension Methods

(Threaded Rod) (Pipe Adaptor Kit)

CAUTION

1. Do not install units below 7' measured from the bottom of the unit to the floor in commercial applications (unless unit is properly guarded to provide user protection from moving parts).

2. Be sure no obstructions block air intake and discharge

of unit heaters.

3. The minimum distance from combustible material is

based on the combustible material surface not exceeding 160°F. Clearance from the top of the unit may be required to be greater than the minimum specified if heat damage, other than fire, may occur to materials above the unit heater at the temperature described.

4. Allow 18" clearance at rear (or 12" beyond end of motor

at rear of unit, whichever is greater) and access side to provide ample air for proper operation of fan.

6-561

INSTALLATION - VENTING

WARNING

1. Gas fired heating equipment must be vented - do not operate unvented.

2. A built-in power exhauster is provided - additional external power exhausters are not required or permitted.

4. Under no circumstances should two sections of double wall vent pipe be joined together within one horizontal vent system due to the inability to verify complete seal of inner pipes.

CAUTION

Installation must conform with local building codes or in the absence of local codes, with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) - latest edition. In Canada installation must be in accordance with CSA B149.1.

Model PTS/BTS unit heaters must be vented with the proper passageway as described in these instructions to convey flue gases from the unit or the vent connector to the outside atmosphere. The heaters must also have a separate combustion air intake pipe to bring in fresh air for combustion from the outside atmosphere.

The venting instructions are organized in sections, based on installation type. The sections are identified as follows:

A3. All heaters come with factory installed vent and combustion

air adapters for attaching the vent pipe to the heater (4” for model sizes 150-200, 6” for model sizes 250-400). Attach the vent pipe to the adapter with 3 corrosion resistant screws. (Drill pilot holes through the vent pipe and adapter prior to screwing in place). Vent pipe must not be smaller than the connector size.

A4. Limit the total equivalent vent pipe length to a minimum of

5' and a maximum of 50' for model sizes 175-400 (25' for the model size 150 unit), making the vent system as straight as possible. The equivalent length of a 4" elbow is 5' and for a 6" elbow is 7'.

A5. A minimum of 12" straight pipe is recommended from the

flue outlet before turns in the vent pipe.

A6. Horizontal sections of vent pipe are to be installed with a

minimum downward slope from the appliance of 1/4 inch per foot and suspended securely from overhead structures at points not greater than 3' apart.

A7. Fasten individual lengths of vent together with at least three

corrosion resistant sheet metal screws.

A8. Keep single wall vent pipe at least 6" from combustible

materials. For double wall vent pipe, follow the vent pipe manufacturer’s clearances to combustibles. The minimum distance from combustible materials is based on the combustible material surface not exceeding 160°F. Clearance from the vent pipe (or the top of the unit) may be required to be greater than 6" if heat damage other than fire could result (such as material distortion or discoloration).

A9. Avoid venting through unheated space when possible.

When venting does pass through an unheated space or if the unit is installed in an environment that promotes condensation, insulate runs greater than 5' to minimize condensation. Inspect for leakage prior to insulating and use insulation that is noncombustible with a rating of not less than 400°F. Install a tee fitting at the low point of the vent system and provide a drip leg with a clean out cap as shown in Figure 8.1.

Applicable Installation Instructions

Instructions by Vent System Type

A General Instructions for ALL installations

B VERTICAL 2-PIPE vent systems ➀ C HORIZONTAL 2-PIPE vent systems ➀

vent systems ➀

➀ The differences between Vertical and Horizontal vent systems in 2-Pipe or

HORIZONTAL AND VERTICAL CONCENTRIC

Concentric Vent conﬁgurations will be identiﬁed in “Section A - General Instructions – All Units”.

Section A - General Instructions - All Units

A1. If the unit heater being installed is replacing existing

equipment and using the existing vent system from that equipment, inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code ANSI Z223.1 or CSA B149.1 Installation Code-latest edition and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies, which could cause an unsafe condition.

A2. The vent pipe should be galvanized steel or other suitable

corrosion resistant material. Follow the National Fuel Gas Code for minimum thickness of vent material. The minimum thickness for connectors varies depending on the pipe diameter. Do not vent unit with PVC or other forms of plastic venting material.

Figure 6.1 - Venting Through Combustible Roof or Wall

Single Wall Vent Pipe

Flashing

Listed Thimble

Single Wall

Single Wall Vent Pipe Terminating with Double wall vent pipe. ➀

Clearance Specified by Type B Vent Mfg.

Single Wall Vent Pipe

Listed Thimble

➀ See Instruction A12 for attaching single wall pipe to double wall pipe

Double Wall Vent Pipe ➀

Specified Terminal

Flashing

Clearance Specified by Type B Vent Mfg.

Double Wall

Single Wall

6-561

Specified Terminal

Specified

Terminal

Specified

Terminal

INSTALLATION - VENTING

A10. When the vent passes through a combustible INTERIOR

wall or floor, a metal thimble 4" greater than the vent diameter is necessary. If there is 6' or more of vent pipe in the open space between the appliance and where the vent pipe passes through the wall or floor, the thimble need only be 2" greater than the diameter of the vent pipe. If a thimble is not used, all combustible material must be cut away to provide 6" of clearance. Where authorities have jurisdiction type B vent may be used for the last section of vent pipe to maintain clearance to combustibles while passing through wall or floor. See Figure 6.1. Any material used to close the opening must be noncombustible.

A11. All seams and joints of the single wall pipe must be sealed

with metallic tape or silastic suitable for temperatures up to 400°F. Wrap the tape two full turns around the vent pipe. One continuous section of double wall vent pipe may be used within the vent system. Refer to instruction A12 in “Section A – General Instructions – All Units” for attaching double wall pipe to single wall pipe.

A12. The following are General Instructions for Double Wall

(Type B) Terminal Pipe Installation:

How to attach a single wall vent terminal to

double wall (type B) vent pipe:

1. Look for the “flow” arrow on the vent pipe.

2. Slide the vent terminal inside the exhaust end of the double wall vent pipe.

3. Drill (3) holes through the pipe and the vent terminal. Using 3/4" long sheet metal screws, attach the cap to the pipe. Do not over tighten.

How to connect a single wall vent system to a

double wall (type B) vent pipe:

1. Slide the single wall pipe inside the inner wall of the double wall pipe.

2. Drill (3) holes through both walls of the single and double wall vent pipes. Using 3/4" sheet metal screws, attach the two pieces of pipe. Do not over tighten.

3. The gap between the single and double wall pipe must be sealed but it is not necessary to fill the full volume of the annular area. To seal, run a large bead of 400°F silastic around the gap.

A13. Vent termination clearances must be maintained:

Table 7.1 - Vent Termination Clearances

Minimum Clearances for Structure Vent Terminal Location

Forced air inlet within 10 feet 3 feet above Combustion air inlet of another

appliance 6 feet all directions Door, window, gravity air inlet, 4 feet horizontal and below

or any building opening 1 foot above Electric meter, gas meter, gas 4 feet horizontal (U.S.)

regulator, and relief equipment ➀ 6 feet horizontal (Canada)

Gas regulator ➀ 6 feet horizontal (Canada)

Adjoining building or parapet wall 6 feet all directions Adjacent public walkways 7 feet all directions

Grade (ground level) 3 feet above ➁

3 feet horizontal (U.S.)

A14. Do NOT vent this appliance into a masonry chimney. A15. Do NOT use dampers or other devices in the vent or

combustion air pipes.

A16.

The venting system must be exclusive to a single appliance, and no other appliance is allowed to be vented into it.

A17. Precautions must be taken to prevent degradation of

building materials by flue products.

A18. Single wall vent pipe must not pass through any

unoccupied attic, inside wall, concealed space, or floor.

A19. Uninsulated single wall vent pipe must not be used

outdoors for venting appliances in regions where the 99% winter design temperature is below 32°F.

A20. Long runs of horizontal or vertical combustion air pipes

may require insulation in very cold climates to prevent the buildup of condensation on the outside of the pipe where the pipe passes through conditioned spaces.

A21. Vertical combustion air pipes should be fitted with a tee

with a drip leg and a clean out cap to prevent against the possibility of any moisture in the combustion air pipe from entering the unit. The drip leg should be inspected and cleaned out periodically during the heating season.

A22. In addition to following these General Instructions, specific

instructions for Vertical and Horizontal vent systems in 2Pipe or Concentric Vent configurations must also be followed. The following outlines the differences:

Vertical Vent System Determination

• Vertical vent systems terminate vertically (up) (an example is shown in Figure 8.1).

• Determine the venting configuration as follows:

> For two building penetrations through the wall or roof

(one for the combustion air inlet pipe and one for the vent pipe), proceed to “Section B - Vertical 2-Pipe Venting”.

> For a single larger building penetration through the

wall or roof, through which both the combustion air inlet and vent pipes will pass, proceed to “Section D Horizontal and Vertical Concentric Venting”.

> For all other cases, proceed to the next section for

Horizontal Vent System Determination.

Horizontal Vent System Determination

• Horizontal vent systems terminate horizontally

(sideways) (an example is shown in Figure 8.2).

• Determine the venting configuration as follows:

> For two building penetrations through the wall or roof

(one for the combustion air inlet pipe and one for the vent pipe), proceed to “Section C - Horizontal 2-Pipe Venting”.

> For a single larger building penetration through the

wall or roof, through which both the combustion air inlet and vent pipes will pass, proceed to “Section D Horizontal and Vertical Concentric Venting”.

➀ Do not terminate the vent directly above a gas meter or regulator. ➁ The vent must be at least 6" higher than anticipated snow depth.

6-561

INSTALLATION - VENTING

COMBUSTION AIR

EXHAUST

SLOPE 1/4" PER FOOT DOWNWARD FROM UNIT

TEE WITH DRIP LEG AND CLEANOUT CAP AT LOW POINT OF VENT SYSTEM

SPECIFIED TERMINAL

SUPPORT BRACKET

12" MIN

2' MIN

6" MIN

12"

ADJACENT BUILDING

12" MIN

RECOMMENDED

4" MIN

TEE WITH DRIP LEG AND CLEANOUT CAP

(SLOPE 1/4" PER FOOT DOWNWARD TOWARD DRIP LEG)

COMBUSTION AIR

EXHAUST

"H" MIN*

12" MIN

RECOMMENDED

4" MIN

BACK VIEW

ROOF PITCH IS:

X / 12

"H" MIN*

(SEE TABLE 8.1)

TEE WITH DRIP LEG AND CLEANOUT CAP

(SLOPE 1/4" PER FOOT DOWNWARD TOWARD DRIP LEG)

ROOF FLASHING

USE LISTED THIMBLE THROUGH ROOF AND CEILING

COMBUSTION AIR

EXHAUST

LISTED TERMINAL

* SIZE ACCORNING TO EXPECTED SNOW DEPTH.

TO WALL OR ADJOINING BUILDING

12" MIN

12" MIN*

2' MIN

6" MIN

USE THIMBLE THROUGH

CELLING

ROOF FLASHING

TERMINAL

Section B - Vertical 2-Pipe Vent System Installation

B1. This section applies to vertically vented 2-pipe (one

combustion air inlet pipe and one vent pipe) vent systems and is in addition to “Section A - General Instructions - All

Units”. B2. Vertical vent systems terminate vertically (up). B3. It is recommended to install a tee with drip leg and clean

out cap as shown in Figure 8.1. B4. The combustion air and vent pipes must be terminated with

(2) Gary Steel Model 1092 caps. B5. Vertical vents must terminate a minimum horizontal and

vertical distance from roof lines and adjacent walls or

obstructions. These minimum distances are outlined in

Figure 8.1 and Table 8.1. B6. The vent must terminate at least 1 foot above and 6 inches

horizontally from the combustion air inlet. B7. Once venting is complete, proceed section titled “Installation

- Gas Connections”.

Figure 8.1 - Vertical 2-Pipe Vent System

Table 8.1 - Minimum Height from Roof to Lowest Discharge Opening

Rise X (in) Roof Pitch Min Height H (ft) ➀ 0-6 Flat to 6/12 1.00

6-7 6/12 to 7/12 1.25 7-8 7/12 to 8/12 1.50 8-9 8/12 to 9/12 2.00 9-10 9/12 to 10/12 2.50 10-11 10/12 to 11/12 3.25 11-12 11/12 to 12/12 4.00 12-14 12/12 to 14/12 5.00 14-16 14/12 to 16/12 6.00 16-18 16/12 to 18/12 7.00 18-20 18/12 to 20/12 7.50 20-21 20/12 to 21/12 8.00

➀ Size according to expected snow depth.

Section C - Horizontal 2-Pipe Vent System Installation

C1. This section applies to horizontally vented 2-pipe vent

systems (one combustion air inlet pipe and one vent pipe) and is in addition to “Section A - General Instructions - All

Units”. C2. Horizontal vent systems terminate horizontally (sideways). C3. All horizontal vents must be terminated with a Gary Steel

1092 vent cap. The cap must terminate a minimum

distance from the external wall, as summarized in

Figure 8.2. C4. The termination of horizontally vented system must extend

16 inches beyond the exterior surface of an exterior wall. C5. The combustion air pipe must be a minimum of 12 inches

below the vent pipe, and 6 inches from the exterior wall. C6. Construct the vent system as shown in Figure 8.2.

Figure 8.2 - Horizontal Venting with Downward Pitch

C7. When horizontal vents pass through a combustible wall (up

to 22 inches thick), the vent passage must be constructed

and insulated as shown in Figure 9.1. C8. The vent must be supported as shown in Figure 9.1. C9. When condensation may be a problem, the vent system

shall not terminate over public walkways or over an area

where condensate or vapor could create a nuisance or

hazard or could be detrimental to the operation of

regulators, relief openings, or other equipment.

6-561

INSTALLATION - VENTING

METAL

SLEEVE

FIBER GLASS

INSULATION

MIN. 2"

2" MIN.

VENT TERMINATION SUPPORT BRACKET

(where required)

(Make from 1" x 1" steel angle)

45°

METAL

SLEEVE

2" MIN.

VENT PIPE DIAMETER

METAL FACE

PLATE

Figure 9.1 - Exhaust Vent Construction Through Combustible Walls and Support Bracket

C10. Maintain a 1/4" per foot downward slope away from the

heater and place a drip leg with clean out near the exit of the vent as shown in Figure 8.2, or allow the condensate to drip out the end.

C11. For a vent termination located under an eave, the

distance of the overhang must not exceed 24". The clearance to combustibles above the exterior vent must be maintained at a minimum of 12". Consult the National Fuel Gas Code for additional requirements for eaves that have ventilation openings.

C12. Once venting is complete, proceed section titled

“Installation - Gas Connections”.

Section D - Concentric Vent System Installation

D1. This section applies to both horizontally and vertically

vented concentric vent systems as defined in “Section A – General Instructions – All Units”, and is in addition to the instructions in that section.

D2. When utilizing the concentric vent option, it should have

been predetermined whether the appliance will be horizontally or vertically vented. Before proceeding, verify that the concentric vent kit received contains the correct components for the installation:

For Vertically Vented Units (Refer to Figure 9.2):

➀ Concentric adapter assembly (same for horizontal and

vertical kits) ➁ Standard Gary Steel 1092 vent termination ➂ Specially designed inlet terminal (part #5H75154B1)

For Horizontally Vented Units (Refer to Figure 9.3):

➀ Concentric adapter assembly (same for horizontal and

vertical kits) ➁ Special vent termination cap (part #5H75150B1) ➂ Special inlet air guard

Figure 9.3 - Horizontal Concentric Vent Kit Components

Concentric Vent Adapter Box

Combustion Air Intake Guard

14" Min.

1" Min.

Outlet Vent Termination Cap

Building Side Wall

CAUTION

The concentric vent adapter box must be installed inside of the structure or building. Do not install this box on the exterior of a building or structure.

D3. Once the kit contents have been verified as correct for the

direction of venting, the concentric vent adapter box is to be installed. Determine the location of the box. Be sure to maintain all clearances as listed in these instructions.

D4. The adapter box is to be mounted on the interior side of the

building. It must not be mounted outside the building.

D5. The adapter box can be mounted flush to the wall (for

horizontal kits) or to the ceiling (for vertical kits). The box can also be offset from the wall or ceiling by using field supplied brackets. When mounting the box, consider serviceability and access to the vent and combustion air pipes.

D6. If the box is to be mounted using field supplied brackets,

these brackets must be strong enough to rigidly secure the box to the wall or ceiling, and should be made from corrosion resistant material. After determining the length of the field supplied brackets, attach them to the sides of the box using several corrosion resistant sheet metal screws.

See Figure 9.4 for typical installation and brackets.

Figure 9.2 - Vertical Concentric Vent Kit Components

Combustion Air Inlet Terminal

Concentric

Vent Adapter Box

Combustion Air Exhaust

6" Min.

12" Min.*

Outlet Vent Termination Cap

* Size according

to expected snow depth.

Building Roof / Ceiling

6-561

Figure 9.4 - Adapter Box with Outlet Vent Pipe Attached

Outlet Vent Pipe Attached

Field Supplied Mounting Brackets

INSTALLATION - VENTING

D7. Determine the length of the vent pipe and combustion air

pipe that must be attached to the vent outlet and combustion air inlet (on the concentric side) of the adapter box (refer to Figure 9.4 and 10.1) to extend through the building wall or roof. Be sure to add the length of the field supplied brackets (if used) and the thickness of the wall or roof. Note the following when determining the pipe lengths:

For Vertical Concentric Vent Kits

(refer to Figure 9.2):

• The bottom of the combustion air intake pipe must terminate above the snow line, or at least 12 inches above the roof, whichever distance is greater.

• The bottom of the vent cap must terminate at least 6 inches above the top of the combustion air intake cap.

For Horizontal Concentric Vent Kits

(refer to Figure 9.3):

• The combustion air intake pipe must terminate at least 1 inch from the wall to prevent water from running down the wall and into the pipe.

• The back of the vent cap must terminate at least 14 inches from the combustion air intake pipe.

D8. Cut the concentric side vent and combustion air pipes to

the proper length as determined in the previous step. Note that the vent pipe diameter is 4" and the combustion air intake pipe diameter is 6" for model sizes 150-200, and 6” and 8” respectively for model sizes 250-400. Both pipes must be single wall galvanized or stainless steel material.

D9. Attach the concentric side vent pipe to the vent outlet of

the concentric vent adapter box, as shown in Figure 9.4, using at least 3 corrosion resistant sheet metal screws. Seal the joint and seam using sealant suitable for temperatures up to 400°F.

D10. Slide the combustion air pipe over the vent pipe and

attach to the air inlet of the concentric adapter box, as shown in Figure 10.1, using at least 3 corrosion resistant sheet metal screws. Seal the joint and seam using sealant suitable for temperatures up to 400°F.

For Vertical Concentric Vent Kits (refer to Figure 9.2):

• Slide the combustion air cap down over the vent pipe and

fasten it to the combustion air pipe with at least 3 corrosion resistant sheet metal screws.

• Attach the vent cap to the vent pipe using at least 3 corrosion resistant sheet metal screws.

• Caulk the gap between the combustion air cap and the

vent pipe with silicone sealant, or other appropriate sealants suitable for metal to metal contact and for temperatures up to 400° F.

For Horizontal Concentric Vent Kits

(refer to Figure 9.3):

• Attach the combustion air intake guard using corrosion resistant screws at the end of the combustion air intake pipe to prevent animals and debris from entering.

• Attach the vent cap to the vent pipe using at least 3 corrosion resistant sheet metal screws.

D14. Install vent pipe and combustion air pipe between unit

heater and concentric vent adapter box as outlined in “Section A – General Instructions – All Units”.

D15. Once venting is complete, proceed to the section titled

“Installation - Gas Connections”.

Figure 10.1 - Adapter Box with Combustion Air Intake Pipe Attached

Outlet Vent Pipe Attached

Combustion Air Intake Guard

D11. Place this assembly (the adapter box, vent pipe and

combustion air pipe) through the wall or roof and verify that the distance requirements as defined in Step D7 are met. Securely attach the assembly building.

D12. From outside the building, caulk the gap between the

combustion air intake pipe and the building penetration.

D13. Attach the combustion air intake and vent pipe

terminations as follows:

Combustion Air Pipe Attached

6-561

INSTALLATION - GAS CONNECTIONS

GAS

SUPPLY LINE

GAS

SUPPLY LINE

GROUND

JOINT

UNION

MANUAL

SHUT-OFF

VALVE

MIN.

SEDIMENT

TRAP

PLUGGED

1/8" NPT TEST

GAGE CONNECTION

CONTROLS

GAS CONNECTIONS

WARNING

1. All field gas piping must be pressure/leak tested prior to operation. Never use an open flame. Use a soap solution or equilavent for testing.

2. Gas pressure to appliance controls must never exceed 14" W.C. (1/2 psi).

3. To reduce the opportunity for condensation, the minimum sea level input to the appliance, as indicated on the serial plate, must not be less than 5% below the rated input, or 5% below the minimum rated input of dual rated units.

CAUTION

1. Purging of air from gas lines should be performed as described in ANSI Z223.1 - latest edition “National Fuel Gas Code”, or in Canada CSA-B149 codes.

2. When leak testing the gas supply piping system, the appliance and its combination gas control must be isolated during any pressure testing in excess of 14" W.C. (1/2 psi).

3. The unit should be isolated from the gas supply piping

system by closing its field installed manual shut-off valve. This manual shut-off valve should be located within 6' of the heater.

4. Turn off all gas before installing appliance.

ImpORTANT

To prevent premature heat exchanger failure, the input to the appliance, as indicated on the serial plate, must not exceed the rated input by more than 5%.

1. Installation of piping must conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) - latest Edition. In Canada, installation must be in accordance with CSA-B149.1.

2. Piping to units should conform with local and national requirements for type and volume of gas handled, and pressure drop allowed in the line.Refer to Table 11.1 to determine the cubic feet per hour (CFH) for the type of gas and size of unit to be installed. Using this CFH value and the length of pipe necessary, determine the pipe diameter from Table 11.2. Where several units are served by the same main, the total capacity, CFH and length of main must be considered. Avoid pipe sizes smaller than 1/2". Table 11.2 allows for a 0.3" W.C. pressure drop in the supply pressure from the building main to the unit. The inlet pressure to the unit must be 6-7" W.C. for natural gas and 11-14" W.C. for propane gas. When sizing the inlet gas pipe diameter, make sure that the unit supply pressure can be met after the 0.3" W.C. has been subtracted. If the 0.3" W.C. pressure drop is too high, refer to the Gas Engineer’s Handbook for other gas pipe capacities.

3. Install a ground joint union with brass seat and a manual shut-off valve adjacent to the unit for emergency shut-off and easy servicing of controls, including a 1/8" NPT plugged tapping accessible for test gauge connection (See Figure 11.1).

4. Provide a sediment trap before each unit in the line where low spots cannot be avoided. (See Figure 11.1).

5. When Pressure/Leak testing, pressures above 11" W.C. (1/2 psi), close the field installed shut-off valve, disconnect the appliance and its combination gas control from the gas supply line, and plug the supply line before testing. When testing pressures 14" W.C. (1/2 psi) or below, close the manual shut-off valve on the appliance before testing.

Figure 11.1 - Recommended Sediment Trap/Manual Shut-off Valve Installation - Side or Bottom Gas Connection ➀

➀ Manual shut-off valve is in the

“OFF” position when handle is perpendicular to pipe.

Table 11.1 - Manifold Pressure & Gas Consumption

Natural Propane

Model

Manifold Pressure

Size

150

Orice Drill Size 42 53

175

200

250

300

350

400

Gal/Hr.Propane n/a 1.9

Orice Drill Size 42 53

Orice Drill Size 38 52

Orice Drill Size 39 1.55mm

Orice Drill Size 35 1.75mm

Orice Drill Size 38 52

Orice Drill Size 35 1.75mm

(“W.C.):

CFH 142.9 60.0

CFH 166.7 70.0

CFH 190.5 80.0

CFH 238.1 100.0

CFH 285.7 120.0

CFH 333.3 140.0

CFH 381.0 160.0

3.5 10

# of

Orices

6Gal/Hr.Propane n/a 1.6

7Gal/Hr.Propane n/a 2.2

9Gal/Hr.Propane n/a 2.7

9Gal/Hr.Propane n/a 3.3

12Gal/Hr.Propane n/a 3.8

12Gal/Hr.Propane n/a 4.4

Table 11.2 - Gas Pipe Capacities - Natural Gas ➀ ➁

Pipe

Length (ft)

10 132 278 520 1050 1600 3050 20 92 190 350 730 1100 2100 30 73 152 285 590 890 1650 40 63 130 245 500 760 1450 50 56 115 215 440 670 1270 60 50 105 195 400 610 1150 70 46 96 180 370 560 1050

80 43 90 170 350 530 930 100 38 79 150 305 460 870 125 34 72 130 275 410 780 150 31 64 120 250 380 710

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

➀ Capacities in Cubic Feet per Hour through Schedule 40 pipe with maximum

0.3"W.C. pressure drop with up to 14"W.C. gas pressure. Specific graivity is 0.60 for Natural gas and 1.50 for Propane gas.

➁ For Pipe Capacity with Propane Gas, divide Natural gas capacity by 1.6. Example:

What is the propane gas pipe capacity for 60 feet of 1-1/4" pipe? The Natural gas capacity is 400 CFH. Divide by 1.6 to get 250 CFH for Propane gas.

Natural Gas

6-561

INSTALLATION - ELECTRICAL CONNECTIONS

ELECTRICAL CONNECTIONS

WARNING

1. Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage.

2. All appliances must be wired strictly in accordance with

wiring diagram furnished with the appliance. Any wiring different from the wiring diagram could result in a hazard to persons and property.

3. Any original factory wiring that requires replacement must

be replaced with wiring material having a temperature rating of at least 105°C.

4. Ensure that the supply voltage to the appliance, as

indicated on the serial plate, is not 5% greater than rated voltage.

CAUTION

Ensure that the supply voltage to the appliance, as indicated on the serial plate, is not 5% less than the rated voltage.

1. Installation of wiring must conform with local building codes, or in the absence of local codes, with the National Electric Code ANSI/NFPA 70

- Latest Edition. Unit must be electrically grounded in conformance to this code. In Canada, wiring must comply with CSA C22.1, Part 1, Electrical Code.

2. Two copies of the unit wiring diagram are provided with each unit. One is located in the side access control compartment and the other is supplied in the literature packet. Refer to this diagram for all wiring connections.

3. Make sure all multi-voltage components (motors, transformers, etc.) are wired in accordance with the power supply voltage.

4. The power supply to the unit must be protected with a fused or circuit breaker switch.

5. The power supply must be within 5 percent of the voltage rating and each phase must be balanced within 2 percent of each other. If not, advise the utility company.

6. External electrical service connections that must be installed include:

a. Supply power connection (115, 208, 230, 460, or 575 volts). b. Connection of thermostats, or any other accessory control devices

that may be supplied (24 volts).

NOTE: All units with supply voltage 208V and greater must use a field installed step-down transformer, available as a separate accessory. Refer to Tables 12.1 through 12.4 for additional information on the required transformer.

7. Refer to Figure 20.1 for the side access control compartment location.

8. All supply power electrical connections are made in the side access control compartment of the unit. The low voltage (thermostat and accessory control devices) can be wired to the terminals in the side access control compartment. Refer to the wiring diagram for the terminal location of all low voltage wiring.

Table 12.1 - Propeller Unit Model PTS Operating Electrical Data ➀

Supply

Voltage

115V

1 Phase

208V

1 Phase

230V

1 Phase

208V

3 Phase

230V

3 Phase

460V

3 Phase

575V

3 Phase

Power Code

01 (115V)

01 (115V) with

Transformer

01 (115V) with

Transformer

01 (115V) with

Transformer

01 (115V) with

Transformer

01 (115V) with

Transformer

01 (115V) with

Transformer

150 175 200 250 300 350 400

Motor Amps 2.8 2.8 2.8 5.4 7.5 7.5 8.8

Total Amps 5.0 5.0 5.0 7.6 8.8 8.8 10.1 Transformer kVA 1.0 1.0 1.0 1.0 1.5 1.5 1.5 208V Total Amps 2.76 2.76 2.76 4.20 4.87 4.87 5.58 Transformer kVA 0.75 0.75 0.75 1.0 1.5 1.5 1.5 230V Total Amps 2.50 2.50 2.50 3.80 4.40 4.40 5.05 Transformer kVA 1.0 1.0 1.0 1.0 1.5 1.5 1.5 208V Total Amps 2.76 2.76 2.76 4.20 4.87 4.87 5.58 Transformer kVA 0.75 0.75 0.75 1.0 1.5 1.5 1.5 230V Total Amps 2.50 2.50 2.50 3.80 4.40 4.40 5.05 Transformer kVA 0.75 0.75 0.75 1.0 1.5 1.5 1.5 460V Total Amps 1.25 1.25 1.25 1.90 2.20 2.20 2.53 Transformer kVA 0.75 0.75 0.75 1.0 1.5 1.5 1.5 575V Total Amps 1.00 1.00 1.00 1.52 1.76 1.76 2.02

Model PTS Sizes

Table 12.2 - Blower Model BTS Motor Amp Draw ➀ ➁

Motor HP 115V/1ph 230V/1ph 208V/3ph 230V/3ph 460V/3ph 575V/3ph

1/4 5.4 - - - - - 1/3 5.0 2.5 1.9 1.6 0.8 0.6 1/2 8.5 3.8 2.3 2.6 1.3 0.9

1 13.4 6.7 4.0 3.8 1.9 1.5

1-1/2 15.4 7.7 5.2 5.2 2.6 1.9

2 - - 6.8 6.6 3.3 2.3 3 - - 10.6 - - 4.0 5 - - 14.3 13.2 6.6 5.2

Supply Voltage

Table 12.3 - Blower Model BTS Control Circuit Amp Draw ➀ ➁

Model Size 115V/1ph 230V/1ph 208V/3ph 230V/3ph 460V/3ph 575V/3ph

150-250 2.2 1.1 1.2 1.1 0.6 0.4 300-400 1.3 0.7 0.7 0.7 0.3 0.3

Supply Voltage

6-561

Amp draw data shown is operating amp draw at

➀

incoming power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code.

Table 12.4 - Blower Model BTS Accessory Transformer Size (kVA) ➂

Supply Voltage

208V 230V 460V 575V

Model Size 3 ph 1 or 3 ph 3 ph 3 ph

150-250 0.5 0.5 0.5 0.5 300-400 0.5 0.25 0.25 0.25

Amp draw data shown is operating amp draw at incoming

➀

power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code.

For BTS models, add the Motor Amp Draw and Control Circuit

➁

Amp Draw to get the Total Unit Amp Draw. Transformers for blower models are typically smaller than those

➂

used for propeller models, as the transformer is not needed for the blower motor. Size 300-400 use a PSC power exhauster motor, further reducing the required transformer size.

INSTALLATION WITH DUCTWORK

BAFFLE

12"

MIN.

BAFFLE

TURNING

VANES

12" MIN.

3" MAX.

TURNING

VANES 3" MIN.

3" MIN.

12"

MIN.

3" MAX.

TURNING

VANES

12"

BAFFLE

12"

MIN.

12"

MIN.

TURNING

VANES

Figure 13.1- Typical Duct & Airflow Installation

Recommended Installations

Dimension “B” Should Never Be Less than 1/2 of “A”

CBA

SIDE VIEW SIDE VIEW

SIDE VIEW SIDE VIEW TOP VIEW

ImpORTANT

Do not attempt to attach ductwork of any kind to propeller models.

When installing the heater, always follow good duct design practices for even distribution of the air across the heat exchanger. Recommended layouts are shown in Figure 13.1. When installing blower units with ductwork the following must be done.

1. Provide uniform air distribution over the heat exchanger.

Use turning vanes where required. See Figure 13.1.

2. Provide removable access panels in the ductwork on the downstream side of the unit heater. These openings should be large enough to view smoke or reflect light inside the casing to indicate leaks in the heat exchanger and to check for hot spots on exchanger due to poor air distribution or lack of sufficient air.

3. If ductwork is connected to the rear of the unit use Modine blower enclosure kit or if using field designed enclosure maintain dimensions of blower enclosure as shown on page 23.

Additional Requirements for Installation of Blower Models (model BTS)

Determining Blower Speed

The drive assembly and motor on all gas-fired blower unit heaters are factory assembled. The adjustable motor sheave has been pre-set to permit operation of this unit under average

conditions of air flow and without any external static pressure. The motor sheave should be adjusted as required when the unit is to be operated at other than average air flows and/or with external static pressures. Adjustment must always be within the performance range shown on page 20 and the temperature rise range shown on the unit’s rating plate.

To determine the proper blower speed and motor sheave turns open, the conditions under which the unit is to operate must be

TOP VIEW

FED

known. If the blower unit is to be used without duct work or filters, the only criteria for determining the motor sheave turns open and blower speed is the amount of air to be delivered. The performance tables for blower models are shown on pages 16 and 17. As an example, a model BTS 350 unit, operating with no external static pressure, that is, no duct work, filters, etc., and is to deliver an air volume of 6481 cfm (cfm = cubic feet of air per minute) requires that the unit be supplied with a 5 hp motor, a -207 drive, and the drive sheave must be set at 2.5 turns open to achieve a blower speed of 960 rpm (see performance table for units with or without blower enclosure, page 17). See "Blower Adjustments" on page 14 for setting of drive pulley turns open.

If a blower unit is to be used with ductwork or filters, etc., the total external static pressure under which the unit is to operate, and the required air flow must be known before the unit can be properly adjusted.

If Modine filters are used, the expected pressure loss through the filters is included in the performance data on page 15. If filters or ductwork are to be used with the unit, and they are not supplied by Modine, the design engineer or installing contractor must determine the pressure loss for the externally added devices or ductwork to arrive at the total external static pressure under which the unit is to operate.

Once the total static pressure and the required air flow are known, the operating speed of the blower can be determined and the correct motor sheave adjustments made. As an example, a model BTS 350 is to be used with a Modine supplied blower enclosure and Modine supplied filters attached to ductwork. The unit is to move 6481 cfm of air flow against an external static pressure of 0.2" W.C. Also, 0.2" W.C. must be added for the filter pressure drop for a total of 0.4" W.C. total pressure drop. Entering the performance table on page 17 for a BTS 350, at 6481 cfm and 0.4" W.C. static pressure, it is seen that the unit will require a 5 hp motor using a -207 drive, and the motor sheave should be set at .5 turns open to achieve a blower speed of 1050 rpm. You can see this example differs from similar conditions in paragraph 2 by the number of turns open and a higher rpm, which is needed to overcome the added external static pressure from the filters.

6-561

TOWARD MOTOR

SET SCREW

ADJUSTABLE HALF

OF SHEAVE

3/4" DEFLECTION

WITH 5 LBS. FORCE

INSTALLATION

To Install

1. Remove and discard the motor tie down strap and the shipping block beneath the motor adjustment screw (not used on all models.)

2. For 3 and 5 HP motors, affix sheave to the motor shaft and install motor on the motor mounting bracket. Install belt on blower and motor sheaves.

Figure 14.1 - Blower Model

MOUNTING BRACKETS ON BLOWER

BLOWER

SHEAVE

ASSEMBLY

BLOWER

HOUSING

ADJUSTMENT

3. Adjust motor adjusting screw for a belt deflection of

approximately 3/4" with five pounds of force applied midway between the sheaves (refer to Figure 14.3). Since the belt tension will decrease dramatically after an initial run-in period, it is necessary to periodically re-check the tension. Excessive tension will cause bearing wear and noise.

4. The blower bearings are lubricated for life; however, before

initial unit operation the blower shaft should be lubricated at the bearings with SAE 20 oil. This will reduce initial friction and start the plastic lubricant flowing.

5. Make electrical connections according to the wiring diagram.

6. Check rotation of the blower. Motor should be in clockwise

rotation when facing motor pulley. If rotation is incorrect, correction should be made by interchanging wiring within the motor. See wiring diagram on the motor.

7. The actual current draw of the motor should be determined.

Under no condition should the current draw exceed that shown on the motor rating plate.

8. It is the installers responsibility to adjust the motor sheave to

provide the specified blower performance as listed on pages 16 & 17 for blower settings different from the factory set performance. The drive number on the unit may be identified by referring to the Power Code number on the serial plate of the unit (see page 25 for model number nomenclature) and matching that number with those shown on page 15. From the listing, the drive number can be determined.

MOTOR MOUNTING

MOTOR

SCREW

BRACKET

ADJUSTABLE

MOTOR SHEAVE

Blower Adjustments

Following electrical connections, check blower rotation to assure blow-through heating. If necessary interchange wiring to reverse blower rotation. Start fan motor and check blower sheave RPM with a hand-held or strobe-type tachometer. RPM should check out with the speeds listed in Performance Data shown on pages 16 and 17. A single-speed motor with an adjustable motor sheave is supplied with these units. If blower fan speed changes are required, adjust motor sheave as follows:

NOTE: Do not fire unit until blower adjustment has been made or unit may cycle on limit (overheat) control.

1. Shut-off power before making blower speed adjustments. Refer to Determining Blower Speed on

page 13 and to Performance Date on pages 16 and 17 to determine proper blower RPM.

2. Loosen belt and take belt off of motor sheave.

3. Loosen set screw on outer side of adjustable motor sheave (see Figure 14.2).

4. To reduce the speed of the blower, turn outer side of motor sheave counterclockwise.

5. To increase the speed of the blower, turn outer side of motor sheave clockwise.

6. Retighten motor sheave set screw, replace belt and retighten motor base. Adjust motor adjusting screw such that there is 3/4” belt deflection when pressed with 5 pounds of force midway between the blower and motor sheaves (see Figure 14.3). Since the belt tension will decrease dramatically after an initial run-in period, it is necessary to periodically re-check the tension to assure continual proper belt adjustment.

7. Check to make certain motor sheave and blower sheave are aligned. Re-align if necessary.

8. Re-check blower speed after adjustment.

9. Check motor amps. Do not exceed amps shown on motor nameplate. Slow blower if necessary.

10. Check air temperature rise across unit. Check temperature rise against values shown in Performance Tables on pages 16 and 17 to assure actual desired air flow is being achieved.

11. If adjustments are required, recheck motor amps after final blower speed adjustment.

Figure 14.2 - Motor Sheave Adjustment

Figure 14.3 - Belt Tension Adjustment

6-561

BLOWER PERFORMANCE DATA - MODEL BTS

Table 15.1 - Power Code Description - Blower Model BTS ➀

BTS150 BTS175 BTS200 BTS250 BTS300 BTS350 BTS400

Power

Code Voltage Phase HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive

01 115 1 1/4 230 - - - - - - - - - - - - 02 115/230 1 1/3 230 1/3 238 1/2 233 1/2 204 1 240 1 1/2 250 1 1/2 250 08 208-230/460 3 1/3 230 1/3 238 1/2 233 1/2 204 1 240 1 1/2 250 1 1/2 250 11 575 3 1/3 231 1/3 238 1/2 233 1/2 204 1 240 1 1/2 251 1 1/2 251 13 115/230 1 1/3 232 1/2 229 1 229 1 241 1 241 1 1/2 247 1 1/2 247 19 208-230/460 3 1/3 232 1/2 229 1 229 1 241 1 241 1 1/2 247 1 1/2 247 22 575 3 1/3 233 1/2 229 1 229 1 241 1 241 1 1/2 248 1 1/2 248 24 115/230 1 1/2 229 1 175 1 175 1 1/2 23 1 1/2 243 1 1/2 252 1 1/2 252 30 208-230/460 3 1/2 229 1 175 1 175 1 1/2 23 1 1/2 243 1 1/2 252 1 1/2 252 33 575 3 1/2 229 1 175 1 175 1 1/2 177 1 1/2 244 1 1/2 180 1 1/2 180 35 115/230 1 1 175 1 1/2 237 1 1/2 235 - - 1 1/2 23 - - - - 38 208 3 - - - - - - 2 180 - - 2 177 2 177 41 208-230/460 3 1 175 1 1/2 237 1 1/2 235 - - 1.5 23 - - - - 42 230/460 3 - - - - - - 2 180 2 177 2 177 44 575 3 1 175 1 1/2 234 1 1/2 236 2 180 1.5 177 2 177 2 177 49 208 3 - - - - - - - - 2 177 2 180 2 180 53 230/460 3 - - - - - - - - 2 177 2 180 2 180 55 575 3 - - - - - - - - 2 177 2 180 2 180 60 208 3 - - - - - - - - 3 180 3 246 3 246 64 230/460 3 - - - - - - - - 3 180 3 246 3 246 66 575 3 - - - - - - - - 3 180 3 246 3 246 71 208 3 - - - - - - - - - - 5 245 5 245 75 230/460 3 - - - - - - - - - - 5 245 5 245 77 575 3 - - - - - - - - - - 5 245 5 245

➀ For selection of correct Power Code, refer to the Tables on pages 16-17.

Table 15.2 - Filter Static Pressure Drop ➁

BTS150 BTS175 BTS200 BTS250 BTS300 BTS350 BTS400

Filter Static (“W.C.) 0.1 0.2 0.1 0.2 0.2 0.2 0.2

➁ For blower units with enclosure and ﬁlter, add the following static pressures to the static pressure determined by the system designer for total

external static pressure.

6-561

BLOWER PERFORMANCE DATA - MODEL BTS

Table 16.1 - Blower Model BTS 150-250 (40-55°F temp rise for 250 size unit) ➀ ➁ ➂

External Static Pressure (“W.C.)

- -

650

612

582

559

540

525

727

672

630

597

571

550

533

735

684

644

612

586

565

629

580

543

513

175 3.0

238 0.0

238 0.5

175 2.5

233 1.0

233 1.5

241 2.0

- -

692

656

629

609

592

580

764

712

673

642

618

599

584

772

723

686

656

632

612

658

613

578

551

175 2.0

233 0.0

233 0.5

241 1.0

- -

731

699

674

656

642

635

799

750

713

684

662

645

632

807

761

725

697

675

657

688

645

612

586

- -

175 1.5

- -

175 1.5

- -

769

739

717

701

690

680

834

786

751

724

705

690

678

841

797

763

736

716

700

716

675

644

620

- -

806

779

759

741

735

722

866

821

788

763

745

733

728

873

831

799

774

756

742

744

704

674

652

Model Size

150

175

200

250

ATR CFM HP

40 2778 1

45 2469

50 2222

55 2020

60 1852

65 1709

70 1587

40 3241

1-1/2

45 2881

1-1/2

50 2593

1-1/2

55 2357

1-1/2

60 2161

1-1/2

65 1994

1-1/2

70 1852

40 3704 1-1/2

45 3292

1-1/2

50 2963

1-1/2

55 2694

1-1/2

60 2469

1-1/2

65 2279

1-1/2

70 2116

1-1/2 1-1/2

40 4630

45 4115

1-1/2

50 3704

1-1/2

55 3367

1-1/2

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7

RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns

573 175 4.5 615 175 4.0 658 175 3.0 699 175 2.5 738 175 1.5 775 175 1.0 810 175 0.5 - - -

1/2

229 4.0

510

1/3

1/2

1/4

1/3

1/2

1/4

1/3

1/2

1 1/4 1/3 1/2

1/2

1/3 1/2

1/2

2 1/2

- - 175 4.5 175 4.0 175 3.0 175 2.5 175 2.0 175 1.0 175 0.5 232 4.0 230 1.0 - - - - - - - - - - - - - -

460

229 5.0 229 4.0 229 3.0 229 2.0 - - - - - - - -

- - - - 175 4.5 175 4.0 175 3.0 175 2.5 175 1.5 175 1.0 230 2.5 232 5.0 232 3.5 232 2.0 - - - - - - - - - -

418

230 2.5 230 0.5 - - - - - - - - - - - -

- - 229 5.0 229 3.5 229 2.5 229 1.5 229 1.0 - - - -

- - - - 175 5.0 175 4.5 175 3.5 175 3.0 175 2.0 175 1.0 230 3.5

- - 232 4.0 232 2.5 232 1.5 - - - - - - - -

384

230 3.5 230 1.5 230 0.0 - - - - - - - - - -

- - - - 229 4.0 229 3.0 229 2.0 229 1.0 229 0.5 - -

- - - - - - 175 5.0 175 4.0 175 3.0 175 2.5 175 1.5 230 4.0 230 4.0 232 4.5 232 3.0 232 2.0 232 1.0 - - - - - -

354

- - - - 229 4.5 229 3.5 229 2.5 229 1.5 229 0.5 - -

- - - - - - 175 5.0 175 4.0 175 3.5 175 2.5 175 1.5 230 5.0 230 5.0 232 5.0 232 3.5 232 2.5 232 1.0 232 0.0 - - - -

329

- - - - 229 5.0 229 4.0 229 2.5 229 1.5 229 0.5 229 0.0

- - - - - - - - 175 4.5 175 3.5 175 2.5 175 2.0 175 3.5

625

- - - - - - 237 5.0 237 4.5 237 3.5 237 2.5 237 2.0 175 5.0

555

- - - - - - - - - - 237 4.5 237 4.0 237 3.0 229 4.5

500

- - 175 5.0 175 4.5 175 3.5 175 3.0 175 2.0 175 1.5 175 0.5

- - - - - - - - - - - - 237 4.5 237 4.0 238 2.5 229 5.0 229 4.5 229 3.5 229 2.5 - - - - - - - -

454

- - - - 175 5.0 175 4.0 175 3.5 175 2.5 175 2.0 175 1.0

- - - - - - - - - - - - 237 5.0 237 4.5 238 4.0

- - 229 5.0 229 4.0 229 3.0 229 2.0 229 1.0 - - - -

416

- - - - - - 175 4.5 175 4.0 175 3.0 175 2.0 175 1.5

- - - - - - - - - - - - - - 237 4.5 238 4.5

- - - - 229 4.5 229 3.5 229 2.5 229 1.5 229 0.5 - -

384

- - - - - - 175 5.0 175 4.0 175 3.5 175 2.5 175 1.5

- - - - - - - - - - - - - - 237 5.0

238 5.0

- - - - 229 5.0 229 3.5 229 2.5 229 1.5 229 1.0 - -

356

- - - - - - - - 175 4.5 175 3.5 175 3.0 175 2.0

715 235 3.5 741 235 2.5 770 235 2.0 - - - - - - - - - - - - - - -

175 3.5

635

229 1.5 229 1.0 - - - - - - - - - - - 235 5.0 235 3.0 235 4.0 235 3.0 235 2.0 235 1.0 235 0.0 - 175 4.5

571

229 3.0 229 2.5 229 1.5 229 0.5 229 0.0 - - - - - -

- - - - 235 5.0 235 4.0 235 3.0 235 2.0 235 1.5 235 0.5 233 2.5

- - 175 5.0 175 4.0 175 3.5 175 2.5 175 2.0 175 1.0 175 0.5

519

229 4.0 229 3.0 229 2.5 229 1.5 229 0.5 229 0.0 - - - -

- - - - - - 235 5.0 235 4.0 235 3.0 235 2.0 235 1.0 233 2.5

- - - - 175 4.5 175 4.0 175 3.0 175 2.5 175 1.5 175 1.0

475

229 5.0 229 4.0 229 3.0 229 2.0 229 1.0 229 0.5 - - - -

- - - - - - - - 235 5.0 235 4.0 235 3.0 235 2.0 233 4.5

- - - - 175 5.0 175 4.5 175 3.5 175 2.5 175 2.0 175 1.5

439

- - 229 4.5 229 3.5 229 2.5 229 1.5 229 1.0 229 0.0 - -

- - - - - - - - - - 235 4.5 235 3.5 235 2.5 233 5.0

- - - - - - 175 4.5 175 4.0 175 3.0 175 2.5 175 1.5

407

- - 229 5.0 229 4.0 229 3.0 229 2.0 229 1.0 229 0.5 - -

- - - - - - - - - - 235 5.0 235 3.5 235 2.5

23 4.5

542

- - - - 180 4.5 180 4.0 180 3.0 180 2.0 180 1.5 180 0.5 241 3.5

482

- - - - 23 4.5 23 3.5 23 2.5 23 1.5 23 0.5 - -

- - - - - - 180 5.0 180 4.5 180 3.5 180 2.5 180 1.5 241 4.5

433

- - - - - - 23 4.5 23 3.5 23 2.5 23 1.5 23 0.5

- - - - - - - - 180 5.0 180 4.5 180 3.5 180 2.5 204 3.0 241 5.0 241 4.5 241 3.5 241 2.5 241 1.5 241 1.0 241 0.0 - -

394

- - - - - - - - 23 4.5 23 3.5 23 2.0 23 1.0

- - - - - - - - - - 180 5.0 180 4.0 180 3.0

558

513

477

448

423

403

655

589

538

497

464

438

415

665

604

556

516

484

457

569

513

468

432

229 3.0

- -

230 1.5

230 2.0

230 3.0

175 3.0

175 4.5

229 3.5

- -

238 2.5

238 3.0

238 3.5

175 3.0

175 4.0

- -

233 2.5

233 3.5

233 4.0

23 4.0

241 2.5

241 3.5

- -

606

- -

565

- -

532

- -

506

230 0.5

485

230 1.0

467

175 2.5

690

175 3.5

630

- -

584

- -

548

- -

520

238 1.5

497

238 2.0

477

- -

698

175 3.5

643

- -

600

233 1.5

565

233 2.0

537

233 2.5

513

23 3.0

599

- -

546

241 3.0

506

- -

474

- -

1/2

1/3

1/2

1/4

1/3

1/2

1/4

1/3

1/2

1 1/4 1/3 1/2

1-1/2

1/2

1-1/2

1/3 1/2

1-1/2

1/3 1/2

1-1/2

1/3 1/2

1-1/2

1/3

Outputs shown are for

➀

1/2

elevations up to 2000'.

For elevations over

1-1/2

2000’, output needs to

be reduced 4% for each 1000' above sea

1-1/2

level. (Does not apply in

Canada - see rating plate).

➁ Sheave turns open

1-1/2

are approximate.

1/2

For proper operation,

check blower rpm.

1-1/2

➂ For 575V selections,

1/2

see Table 16.2 for the corrected Drive Number.

1-1/2

1/2

Table 16.2 -

1-1/2

1/2

Drives for 575V ➃

1-1/2 1-1/2

1-1/2

1/2

1-1/2

Drive for

Model

Under 575V

230 = 231

BTS150

232 = 233 237 = 234

BTS175

238 = 239

BTS200 235 = 236 BTS250 23 = 177

➃ Performance is the

same; motor sheave accommodates larger shaft. When ordering 575V, specify the listed 575V drive.

Drive for

575V

6-561

BLOWER PERFORMANCE DATA - MODEL BTS

Table 17.1 - Blower Model BTS 250-400 (60-70°F temp rise for 250 size unit) ➀ ➁ ➂

External Static Pressure (“W.C.)

- -

490

471

456

721

659

611

573

543

518

497

706

651

608

574

546

523

722

670

629

594

566

204 1.0

204 1.5

180 1.0

177 1.0

23 2.5

- -

241 2.0

241 2.5

241 3.0

246 1.5

180 3.0

- -

247 2.0

250 0.0

250 1.0

246 1.0

- -

247 1.0

247 2.5

530

512

498

746

687

642

606

578

555

536

729

678

638

606

580

559

744

696

656

625

599

204 0.5

180 0.5

177 0.0

241 1.0

241 1.5

241 2.0

246 1.0

247 1.0

252 5.0

246 0.5

247 0.5

247 1.0

- -

23 1.5

- -

566

- -

550

- -

538

180 0.0 - - - - - -

771

- -

715

177 0.5

672

- -

638

- -

612

241 0.5

590

241 1.0

572

246 0.0

753

- -

705

- -

667

247 0.0

637

252 4.5

614

252 5.0

594

- -

767

- -

721

- -

685

- -

655

247 0.0

631

- -

601

- -

587

- -

576

- -

742

177 0.0

701

- -

669

- -

644

241 0.0

623

241 0.5

607

777 801

- -

731

- -

696

- -

668

252 3.5

645

252 4.0

627

- -

791

- -

747

- -

712

- -

684

- -

662

635

622

613

768

729

698

674

655

640

757

724

697

676

658

814

772

740

713

691

Model Size

250

300

350

400

ATR CFM HP

60 3086

65 2849

70 2646

40 5556 3

45 4938

50 4444

55 4040

60 3704

65 3419

70 3175

40 6482 5

45 5761

50 5185

55 4714

60 4321

65 3989

70 3704

40 7407 5 45 6584 5

50 5926

55 5387

60 4938

65 4558

70 4233

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7

RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns

1/2

204 4.0

- - 241 5.0 241 4.0 241 3.0 241 2.0 241 1.5 241 0.5 241 0.0

360

1-1/2

1/2

1-1/2

1/2

1-1/2

- - - - - - - - 23 5.0 23 4.0 23 3.0 23 2.0

- - - - - - - - - - - - 180 4.5 180 2.5

204 4.5

- - - - 241 4.5 241 3.5 241 2.5 241 1.5 241 1.0 241 0.0

332

- - - - - - - - - - 23 4.5 23 3.5 23 2.0

- - - - - - - - - - - - 180 5.0 180 4.0

204 5.0

- - - - 241 5.0 241 4.0 241 3.0 241 2.0 241 1.0 241 0.5

308

- - - - - - - - - - 23 5.0 23 3.5 23 2.5

- - - - - - - - - - - - 180 5.0 180 4.5

180 3.0

650

177 1.5 177 0.5 177 0.0 - - - - - - - - - - - -

177 3.5

578

180 5.0 180 4.5 180 3.5 180 3.0 180 2.0 180 1.5 180 0.5 180 0.0

23 5.0

520

243 2.5 243 1.5 243 0.0 - - - - - - - - - -

- - - - 180 5.0 180 4.5 180 3.5 180 2.5 180 1.5 180 1.0

241 3.5

240 2.0 240 1.5 240 0.5 - - - - - - - - - -

473

- - - - 23 5.0 23 3.5 23 2.5 23 1.5 23 0.5 23 0.0

243 4.0 243 3.0 243 1.5 243 0.5 243 0.0 - - - - - -

- - - - - - - - 180 4.5 180 3.5 180 2.5 180 2.0

241 4.5

240 3.0 240 2.5 240 1.5 - - - - - - - - - -

433

- - - - - - 23 4.5 23 3.5 23 2.5 23 1.5 23 0.5

243 5.0 243 4.5 243 3.0 243 1.5 243 0.5 - - - - - -

- - - - - - - - 180 5.0 180 4.5 180 3.5 180 2.5

241 5.0

240 4.0 240 3.0 240 2.0 240 1.0 240 0.0 - - - - - -

400

- - - - - - - - 23 4.0 23 3.0 23 2.0 23 1.0

- - 243 5.0 243 4.0 243 2.5 243 1.0 243 0.0 - - - -

- - - - - - - - - - 180 5.0 180 4.0 180 3.0

- - -

371 240 5.0 240 4.0 240 2.5 240 1.5 240 0.5 - - - - - -

- - - - - - - - - 23 5.0 23 4.0 23 2.5 23 1.5

- - - - - 243 5.0 243 3.5 243 2.0 243 0.5 243 0.0 - -

- - - - - - - - - - - - - 180 4.5 180 3.5

721 245 3.0 739 245 3.0 757 245 2.5 777 245 2.0 797 245 1.0 817 245 0.5 838 245 0.0 860 245 0.0

246 3.5

643

245 5.0 245 5.0 245 4.0 245 3.5 245 3.0 245 2.5 245 2.0 245 1.0 180 5.0

177 3.5 177 3.0 177 2.0 177 1.0 - - - - - - - -

579

- - - - - - - - 246 2.5 246 1.5 246 1.0 246 0.0

- - - - - - 245 5.0 245 4.5 245 3.5 245 3.0 245 2.5 247 3.5 250 0.5 250 0.0 252 5.0 - - - - - - - - - -

528

- - - - - - 180 4.5 180 3.5 180 2.5 180 2.0 180 1.0

177 5.0 177 4.5 177 3.5 177 2.5 177 1.5 177 1.0 177 0.0 177 0.0

- - - - - - - - 245 5.0 245 4.5 245 4.0 245 3.0 247 5.0 250 2.5 250 1.0 250 0.0 252 5.0 252 4.5 252 3.5 252 2.5 - -

484

- - - - - - - - - - - - - - 180 2.0

- - - - 177 4.5 177 3.5 177 2.5 177 1.5 177 0.5 177 0.0

- - - - - - - - - - 245 5.0 245 4.5 245 4.0 250 4.0

- - 247 5.0 247 4.0 247 3.0 247 2.0 247 0.5 247 0.0 - -

448

- - - - - - 177 4.5 177 3.5 177 2.5 177 1.5 177 0.5

- - - - - - - - - - - - 245 5.0 245 4.5 250 5.0

- - - - 247 5.0 247 4.0 247 2.5 247 1.5 247 0.0 - -

416

- - - - - - - - 177 4.0 177 3.0 177 2.0 177 1.0

- - - - - - - - - - - - - - 245 5.0

823 245 0.5 838 245 0.0 - - - - - - - - - - - - - - - - - 733 245 3.0 750 245 2.5 768 245 2.0 787 245 1.5 807 245 1.0 827 245 0.5 847 245 0.0 868 245 0.0

246 3.0

660

245 5.0 245 4.5 245 3.5 245 3.0 245 2.5 245 2.0 245 1.5 245 0.5

177 3.0

601

246 4.5 246 4.0 246 3.5 246 2.5 246 2.0 246 1.0 246 0.5 - -

- - - - 245 5.0 245 4.5 245 4.0 245 3.0 245 2.5 245 2.0 247 3.0

177 4.5 177 3.5 177 3.0 177 2.0 177 1.0 177 0.0 - - - -

552

- - 246 5.0 246 4.5 246 4.0 246 3.0 246 2.0 246 1.5 246 0.5

- - - - - - - - 245 5.0 245 4.0 245 3.5 245 2.5 247 4.5

- - 177 5.0 177 4.0 177 3.0 177 2.0 177 1.0 177 0.0 177 0.0

510

- - - - - - 246 5.0 246 4.0 246 3.0 246 2.0 246 1.5

- - - - - - - - - - 245 5.0 245 4.0 245 3.5 247 5.0

- - - - 177 5.0 177 4.0 177 3.0 177 2.0 177 1.0 177 0.0

475

- - - - - - - - 246 4.5 246 3.5 246 3.0 246 2.0

- - - - - - - - - - - - 245 4.5 245 4.0

403

379

359

673

604

549

505

468

438

412

662

602

553

512

478

449

680

623

576

536

503

204 3.0

204 3.5

204 4.5

180 2.5

177 3.0

23 4.5

241 3.0

241 3.5

241 4.5

241 5.0

246 1.0

180 4.5

247 3.0

247 4.0

250 2.5

250 4.0

246 2.5

177 2.0

- -

247 3.5

247 4.5

448

427

410

697

631

580

538

506

478

456

684

626

580

542

511

485

700

646

601

565

534

204 1.5

204 2.0

204 2.5

180 2.0

177 2.0

23 3.5

241 2.0

241 3.0

241 3.5

241 4.0

246 2.5

180 4.0

247 2.0

247 3.0

250 1.0

250 2.5

246 1.5

- -

247 2.5

247 3.5

- -

177 0.0

- -

252 2.5

252 3.0

- -

HP 1/2

1-1/2

1/2

1-1/2

1/2

1-1/2

2 3

1-1/2

3 5 3 5

➀ Outputs shown are for

elevations up to 2000'. For elevations over

1-1/2

2000’, output needs to be reduced 4% for

each 1000' above sea

level. (Does not apply in Canada - see rating plate).

1-1/2

➁ Sheave turns open

are approximate. For proper operation,

check blower rpm.

1-1/2

➂ For 575V selections, see

Table 17.2 for the corrected

Drive Number.

1-1/2

2 5 5

Table 17.2 -

Drives for 575V ➃

1-1/2

5 2 3 5

2 3 5

Drive for

Model

Under 575V

BTS250 23 = 177

BTS300

BTS350

BTS400 247 = 248

23 = 177 243 = 244 252 = 180 247 = 248 250 = 251

➃ Performance is the

same; motor sheave accommodates larger shaft. When ordering 575V, specify the listed 575V drive.

Drive for

575V ➁

6-561

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Modine Manufacturing PTS, BTS150, BTS175, BTS200, BTS250 Service Manual

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User Manual