Modine Manufacturing 6 558 Users Manual Psh Service

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WARNING

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.

6-558.6

P/N 5H72256A Rev. F

INSTALLATION AND SERVICE MANUAL

separated combustion

high efficiency

gas-fired unit heaters

models PSH & BSH

Contents Page

Inspection on arrival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Performance data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Checking input rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Propeller heaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Service instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Motor data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Control options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Rating plate identification . . . . . . . . . . . . . . . . . . . . . . . . . 27

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back cover

FOR YOUR SAFETY

If you smell gas:

1. Open windows

2. Don't touch electrical switches.

3. Extinguish any open flame.

4. Immediately call your gas supplier.

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.

THIS MANUAL IS THE PROPERTY OF THE OWNER.

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN

YOU LEAVE THE JOB.

All models approved for use in California by the CEC (when

equipped with IPI), in New York by the MEA division, and in

Massachusetts. Unit heater is certified for non-residential

applications.

CAUTION

To prevent premature heat exchanger failure do not locate

ANY gas-fired units in areas where chlorinated, halogenated

or acid vapors are present in the atmosphere.

Inspection on Arrival

1. Inspect unit upon arrival. In case of damage, report

immediately to transportation company and your local

Modine sales representative.

2.

Check rating plate on unit to verify that power supply meets

available electric power at the point of installation.

3. Inspect unit received for conformance with description of

product ordered (including specifications where applicable).

October, 2002

Heater Parts from ACF Greenhouses

INSTALLATION

SPECIAL PRECAUTIONS

2

Figure 2

Hinged Bottom for Burner Service

(See Dimension “C”, page 19)

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.

1. Disconnect power supply before making wiring

connections to prevent electrical shock and equipment

damage. All units must be wired strictly in accordance

with wiring diagram furnished with the unit.

2. Turn off all gas before installing unit heaters.

3. Gas pressure to unit heater controls must never exceed

14" W.C. (1/2 psi).

When leak testing the gas supply piping system, the unit

and its combination gas control must be isolated during

any pressure testing in excess of 14" W.C. (1/2 psi).

The unit should be isolated from the gas supply piping

system by closing its field installed manual shut-off valve.

4. Check gas inlet pressure at unit upstream from

combination gas control. The inlet pressure should be 6" -

7" W.C. on natural gas or 11" - 14" W.C. on propane gas.

Purging of gas piping should be performed as described

in ANSI Z223.1 - Latest Edition or in Canada in

CAN/CGA-B149 codes.

5. All units must be supplied with both combustion air and

exhaust piping to the outdoors.

6. Do not install in potentially explosive or flammable

atmospheres laden with grain dust, sawdust, or similar air-

borne materials. In such applications, a blower type heater

installed in a separate room with ducting, including

appropriate back flow prevention dampers to the dust-

laden room, is recommended.

7. Installation of units in high humidity or salt water

atmospheres will cause accelerated corrosion resulting in

a reduction of the normal life span of the units.

8. To prevent premature failure do not located ANY gas-fired

unit heaters in areas where chlorinated, halogenated or

acid vapors are present in the atmosphere.

9. Maintain separation between units so discharge from one

unit will not be directed into the inlet of another.

10. Do not install unit outdoors.

11. Minimum clearance to combustibles is 12 inches from the

bottom; 18 inches from the sides; 6 inches from the top

and vent connector.

12. Allow at least 6" clearance at the sides and 12" clearance

at rear (or 6" beyond end of fan motor at rear of unit,

whichever is greater) to provide ample air for combustion

and proper operation of fan.

13. 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 6" if heat damage, or other than fire, may

occur to materials above the unit heater at the

temperature described.

14. Do not install units below 7 feet, measured from the

bottom of the unit to the floor, unless properly guarded to

provide protection from moving parts.

15. Modine units are designed for use in heating applications

with ambient temperatures between 32°F and 90°F. If an

application exists where ambient temperatures can be

expected to fall outside of the is range, contact factory

for recommendations.

16. Provide clearance for opening hinged bottom pan for

servicing. See Figure 2. Do not set unit on its bottom.

17. To assure that flames do not impinge on heat exchanger

surfaces, the unit must be suspended in a vertical and

level position. Failure to suspend unit properly may

shorten the life of the unit heater.

18. Do not life unit by power exhauster.

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

unit.

20. Do not attach duct work, air filters, or polytubes to any

propeller (PSH) model unit.

21. 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 hanger

and in accordance with the requirements of the enforcing

authority and/or NFPA No. 409 — Latest Edition.

22. 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 unit heaters in airplane

hangars must be in accordance with the requirements of

the enforcing authority, and in public garages in

accordance with the current CAN/CGA-B149 codes.

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

manual before final installation.

24. All literature shipped with your unit should be kept for

future use for servicing or service diagnosis. Do not

discard any literature shipped with your unit.

25. When servicing or repairing this equipment, use only

Modine-approved service replacement parts. A complete

replacement parts list may be obtained by contacting

Modine Manufacturing Company. Refer to the rating

plate on the unit for complete unit model number,

serial number and company address. Any substitution

of parts or controls not approved by Modine will be at

owners risk.

Heater Parts from ACF Greenhouses

INSTALLATION

3

Product Description

Modine PSH and BSH model unit heaters are listed as separated

combustion unit heaters and are defined as follows: A unit heater

for installation in non-residential structures which, when connected

to a sealed combustion air pipe and sealed exhaust vent, supplied

by the installer, constructed so that when installed according to the

manufacturer’s instructions, air for combustion is derived from the

outside atmosphere and the flue gases from the appliance are

discharged to the outside atmosphere and the flue gases from the

appliance are discharged to the outside atmosphere.

In the U.S., the installation of these units must comply with the

“National Fuel Gas Code,” ANSIZ223.1, 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 CAN/CGA-B149.1, “Installation Code for

Natural Gas Burning Appliances and Equipment” or CAN/CGA-

B149.2, “Installation Code for Propane Burning Appliances and

Equipment.”

1. All installation and service of these units must be performed by

a qualified installation and service agency only as defined in

ANSIZ223.1, latest edition or in Canada by a licensed gas fitter.

2. This unit is certified by C.S.A., with the controls furnished. For

replacement parts, submit the complete model, control code

and serial number shown on rating plate on the unit, Modine

reserves the right to substitute other authorized controls as

replacements.

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

operate motors at reduced speed.

4. Information on controls is supplied separately.

5. Modine unit heaters use the same burner for natural and

propane gases.

Locating Unit Heaters

In locating units, consider general space-heating requirements,

availability of gas, and proximity to vent locations. Unit heaters

should be located so heated air streams wipe exposed walls

without blowing directly against them. In multiple unit installations,

arrange units so that each supports the sir stream from another,

setting up circulatory air movement in the area. In buildings

exposed to prevailing winds, a large portion of the heated air

should be directed along with windward wall. Avoid interference of

air streams as much as possible.

Mounting height (measured from bottom of unit) at which unit

heaters are installed is critical. Maximum mounting heights for

standard units are listed in Tables 7 and 8 on page 18. Alternate

mounting heights for units with deflector hoods or nozzles are

shown on pages 10 and 12. The maximum mounting heights for

any unit is that heights above which the unit will not deliver heated

air to the floor. The maximum mounting heights must not be

exceeded in order to assure maximum comfort.

Motors and controls used on Modine unit heaters are designed for

use in ambient temperatures between 32°F and 90°F. If an

application exists where ambient temperatures can be expected to

fall outside of this range, contact factory for recommendations.

Combustion Air Requirements

Modine models PSH and BSH separated combustion units are

designed to receive air for combustion directly from the outside

atmosphere via field installed combustion air piping between the

unit and the outside atmosphere. The combustion air inlet of the

unit must be connected to the outside atmosphere.

The maximum equivalent length of combustion air piping cannot

exceed 30 feet. Keep this limitation in mind when locating units.

See page 5 for combustion air piping instructions.

Unit Suspension

Be sure the means of suspension is adequate to support the

weight of the unit. (See page 19 for unit weights.) For proper

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

Clearances to combustibles as specified above must be strictly

maintained.

On all propeller units except the PSH280 and PSH340, two tapped

holes (3/8 - 16) are located in the top of the unit to receive ceiling

hangers. Units with two point suspension, models PSH130 through

PSH225, incorporate a level hanging feature. Depending on what

options and accessories are being used, the heater may not hang

level as received from the factory. Do not hang heaters with

deflector hoods until referring to the "installation manual for

deflector hoods" and making the recommended preliminary

adjustments on the heater. These preliminary adjustments need to

be made with the heater resting on the floor.

PSH130 through PSH225 units without deflector hoods that do not

hang level after being installed, can be corrected in place. Simply

remove both outer side panels (screws to remove are on back

flange of side panel) and you will see the (adjustable) mounting

brackets (Figure 3). Loosen the set screws holding the mounting

brackets in place and using a rubber mallet or something similar,

tap the heater into a position where it does hang level. Re-tighten

set screws and replace the outer side panels.

The PSH280 and PSH340 have four mounting holes. On all blower

units, except the BSH280 and BSH340, two tapped holes are

provided in the top of the unit and two holes in the blower support

bracket. The BSH280 and BSH340 have four tapped holes in the

top of the unit and two in the blower support bracket for mounting.

To assure that flames are directed into the center of heat

exchanger tubes, unit must be supported in a vertical position, with

suspension hangers “UP.” Check with a level. This is important to

the operation and life of unit.

NOTE: Pipe hanger adapter kits, as shown in Figure 3, are

available as accessories from Modine. The hardware allows for

pipe caps to be secured into the top of the unit heater with

machine screws (as illustrated - machine screws are 3/8 - 16 x

1.75 UNC-2A THD). The pipe caps can then accommodate 3/4"

NPT pipe for mounting. Three different kits are available with either

2, 4, or 6 adapters per kit. See price sheet to determine proper kit.

CAUTION

Minimum clearance to combustibles is 12 inches from the

bottom; 18 inches from the sides; 6 inches from the top and vent

connector.

Allow at least 12" at the rear of unit or 6" beyond the end of the

motor (Whichever is greater) to provide ample air for proper

operation of fan.

Provide clearance for opening hinged bottom of servicing. See

Figure 2.

CAUTION

Units must not be installed in potentially explosive, flammable or

corrosive atmosphere.

To prevent premature heat exchanger failure do not locate ANY

gas-fired unit in areas where chlorinated, halogenated or acid

vapors are present in the atmosphere.

Heater Parts from ACF Greenhouses

INSTALLATION

Figure 2

Suspension Methods

Venting

General Venting and Combustion Air

Instructions

Table 1

ANSI venting requirements

1. Table 1 summarizes the ANSI venting requirements for the

various appliance categories. All PSH/BSH models are

category III appliances. The venting requirements for a

category III appliance are included in these instructions.

2. Select the size of vent and combustion air pipe that fits the

power exhauster and combustion air intake on the rear of

the appliance (see pages 14 and 15 for dimensions). Do

not use a vent or combustion air pipe smaller than the size

of the outlet or inlet on the appliance. The pipe should be

single wall 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.

3. A minimum of 12 inches straight pipe is recommended from

the power exhauster outlet before turns in the vent pipe.

4. Install the vent and combustion air pipes with a downward

slope from the appliance of 1/4 inch per foot and suspend

securely from overhead structures at points no greater than

3 feet apart. Fasten individual lengths of vent together with

at least three corrosion resistant sheet metal screws.

5. Keep the vent pipe at least 6 inches from combustible

material. The minimum distance from combustible material

is based on the combustible material surface not exceeding

160F. Clearance from the vent pipe (or the top of the unit)

may be required to be greater than 6 inches if heat damage

other than fire (such as material distortion or discoloration)

could result.

6. Avoid venting through unheated space when possible.

When venting does pass through an unheated space,

insulate runs greater than 5 feet to minimize condensation.

Inspect for leakage prior to insulating and use insulation

that is noncombustible with a rating of not less than 350F.

Install a tee fitting at the low point of the vent system and

provide a drip let with a clean out cap as shown in figure

01. The drip leg should be cleaned annually.

7. When the vent passes through an INTERIOR wall or floor, a

metal thimble 4 inches greater than the vent diameter is

necessary. If there is 6 feet or more of vent pipe in the

open space between the unit heater and where the vent

pipe passes through the wall or floor, the thimble need only

be 2 inches greater than the diameter of the vent pipe. If a

thimble is not used, all combustible material must be cut

away to provide a 6 inches clearance. Any material used to

close the opening must be noncombustible.

8. Limit the total equivalent vent pipe length to a minimum of 5

feet and a maximum of 30 feet, making the vent system as

straight as possible. (The equivalent length of a 4 inch

elbow is 5 feet and a 6 inch elbow is 10 feet).

9. Seal the joints with a metallic tape suitable for temperatures

up to 350F. (3M tapes 433 or 363 are acceptable.) Wrap

the tape two full turns around the vent pipe.

10. Do NOT vent this appliance into a masonry chimney.

11. Do NOT use dampers or other devices in the vent or

combustion air pipes.

12. The venting system must be exclusive to a single appliance,

and to other appliance is allowed to be vented into it.

13. 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.

14. 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 moister in the combustion air pipe from

entering the unit. The drip leg should be inspected and

cleaned periodically during the heating season.

15. 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 regulator,

relief openings or other equipment.

16. Precautions must be taken to prevent degradation of

building materials by flue products.

17. The vent cap for vertically vented appliances should extend

above any portion of a building within a horizontal distance

of 2 feet. Refer to figures 7 and 8.

Remove Side Panels

to Adjust Mounting Brackets (Suspension w/ Pipe Adapter Kit)

Appliance Venting

Category Description Requirements

INegative vent pressure Follow standard venting

Non-condensing requirements.

IINegative vent pressure Condensate must be

Condensing drained.

III Positive vent pressure Vent must be gastight.

Non-condensing

IVPositive vent pressure Vent must be liquid and

Condensing gastight.

Condensate must be

drained.

4

CAUTION

Gas-fired heating equipment must be vented — do not operated

unvented.

A built-in power exhauster is provided — additional external

draft hoods (diverters) or power exhausters are not required or

permitted.

Installation 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 CAN/CGA-B149.1 for natural gas

appliances, and CAN/CGA-B149.2 for propane appliances.

Heater Parts from ACF Greenhouses

INSTALLATION

Venting Instructions for Concentric Vent

Options

The concentric vent concept allows for the vent pipe and the

combustion air pipe to pass through one hole in an

EXTERIOR wall or roof. The concentric vent kits offered are

horizontal or vertical. Venting with 2 pipes; a combustion air

pipe and flue product vent pipe remains an option, primarily

for replacement heaters where two holes through the exterior

of a building already exist.

When utilizing the concentric vent option, you have already

pre-determined whether the unit heater will be horizontal vent

or vertical vent and have received the appropriate kit. At this

time, you need to verify that you have all the components

required for the venting option chosen. The components for

each kit are as follows:

Horizontal Concentric Vent Kit:

• concentric adapter assembly

• specially designed vent termination cap

• specially designed inlet air guard

Vertical Concentric Vent Kit:

• concentric adapter assembly

• standard Briedert Type L or Gary Steel 1092 vent

termination cap

• specially designed inlet terminal

Although the first installation you will make will be the

concentric adapter assembly, you should now “read ahead”

the instructions for the type of venting option you’ve already

chosen - i.e. horizontal concentric, vertical concentric, 2 pipe

horizontal or 2 pipe vertical. These instructions can be found

on pages 5, 6,or 7 of these installation instructions. After

reading your specific instructions, come back to “Installing the

Concentric Vent Adapter Box” section and begin.

Installing the Concentric Vent Adapter Box

1. Determine the location of the box. Refer to the instructions

in the following sections for the method of venting to be

used (vertical or horizontal). Maintain all clearances as

listed in these instructions.

2. This box can be mounted flush to the wall or roof, or the

box can be offset from the wall or roof by using field

supplied brackets. When mounting the box, consider

serviceability and access to the vent and combustion air

pipes.

3. 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 roof, 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 3 for typical installation and brackets.

Figure 3

Adapter Box Assembly with Typical Field Supplied Mounting

Brackets

4. Determine the appropriate length of vent pipe that must be

attached to the vent outlet (the concentric side) of the box.

Refer to the following sections for the minimum length of

vent pipe to be used for the method of venting (vertical or

horizontal). Make sure to add the length of the field

supplied brackets if used, and the thickness of the wall or

roof.

5. Cut the vent pipe to the proper length and attach it to the

vent outlet of the concentric vent adapter box using at

least 3 corrosion resistant sheet metal screws. Seal this

joint using metallic tape suitable for temperatures up to

350° F. Wrap the tape two full turns around the vent pipe.

See figure 4.

Figure 4

Adapter Box Assembly with Vent Outlet Pipe Attached

6. Determine the length of the combustion air pipe to extend

through the wall. Refer to the following sections for the

minimum length of combustion air pipe to be used for the

method of venting being used, vertical or horizontal. Cut

the pipe to the proper length.

7. Slide the combustion air pipe over the vent pipe. Attach

the combustion air pipe to the adapter box using at least 3

non corrosive sheet metal screws. See figure 5.

Figure 5

Adapter Box Assembly with Combustion Air

Pipe Attached

Adapter Box Dimensions

A B C Concentric Side

Heater Sizes

130-225 81/4" 113/4" 4" 4" 6"

Heater Sizes

280-340 101/2" 16" 4" 6" 8"

A

B

C

Exhaust Combustion

5

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.

Heater Parts from ACF Greenhouses

6

INSTALLATION

8. 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 the following

sections are met. Securely attach the assembly (adapter

box and vent and combustion air pipe) to the wall or roof

using appropriate fasteners.

Horizontal Concentric Venting:

Figure 6

Horizontal Concentric Vent

(rear pipe hidden)

1. The vent pipe must terminate with the terminal supplied by

the manufacture for horizontal venting. Refer to the parts

list on page 5 for the appropriate part.

2. The combustion air pipe must terminate at least 1 inch from

the wall. This will prevent water from running down the wall

and into the pipe and allows for easy installation of the

combustion air intake guard.

3. Caulk between the wall and the air intake pipe.

4. Maintain 12 inches from the combustion air inlet to the back

of the vent terminal.

5. Attach the combustion air intake guard using non corrosive

screws as shown in figure 5. This guard must be placed at

the end of the pipe on the exterior of the building. This

guard helps to prevent animals and debris from entering the

combustion air pipe.

Vertical Concentric Venting:

Figure 7

Vertical Concentric Vent

(back view typical)

1. The vent must terminate with a Gary Steel Model 1092 or

Briedert Type L cap for the appropriate pipe size.

2. The combustion air pipe must terminate with the cap

supplied by the manufacturer. This cap is specially

designed to work with the concentric vent system. Refer to

the parts list on page 5 for the appropriate part.

3. The bottom of the air intake pipe must terminate above the

snow line, or at least 12 inches above the roof, which ever

distance is greater.

4. The bottom of the vent cap must terminate at least 6 inches

above the top of the air intake cap.

5. To attach the caps, slide the combustion air cap over the

vent pipe and fasten it to the combustion air pipe with at

least 3 non corrosive fasteners. Then, attach the vent cap

to the vent pipe, also using at least 3 non corrosive

fasteners.

6. 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 of

350° F.

Two Pipe Venting

Two pipe venting refers to using two penetrations through an

exterior wall or roof. This method of venting is primarily used

for replacement heaters where two holes through the exterior of

a building exist. To vent using this method, either (2) Briedert

Type L caps or (2) Gary Steel Model 1092 caps provided with

your unit heater must be used. These caps are used for both

vertical and horizontal venting of the heater.

Vertical Two Pipe Venting

1. The bottom of the combustion air cap must be located

above the snow line or 12 inches above the roof, which ever

is greater.

2. The vent must terminate at least 1 foot above and 16

inches horizontally from the combustion air inlet.

3. When the vent passes through a combustible roof, a metal

thimble 4 inches greater than the vent diameter is

necessary. If there is 6 feet or more of vertical vent pipe in

the open space between the unit heater and where the vent

pipe passes through the roof, the thimble need only be 2

inches greater than the diameter of the vent pipe. If a

thimble is not used, all combustible material must be cut

away to provide a 6 inch clearance. Any material used to

close the opening must be noncombustible.

1"

12"

To Exhaust

T

o Combustion

Air Inlet

Figure 8

Vertical Venting - Two Pipes

Heater Parts from ACF Greenhouses

INSTALLATION

Horizontal Two Pipe Venting

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

to 8 inches thick), the vent passage must be constructed

and insulated as shown in Figure 10.

2. The termination of horizontally vented system must extend

12 inches beyond the exterior surface of an exterior wall.

3. The combustion air pipe must be a minimum of 16 inches

below the vent pipe, and 24 inches from the exterior wall.

4. Support the vent and combustion air pipe as shown in

Figure 10.

Piping

1. Installation of piping must be in accordance with local

codes, and ANSI Z223.1, “National Fuel Gas Code,” or

CAN/CGA-B149 in Canada.

2. Piping to units should conform with local and national

requirements for type and volume and gas handled, and

pressure drop allowed in the line. Refer to Table 5, 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 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 2

allows for the usual number of fittings with a 0.3; W.C.

pressure drop. Where the gas supplied has a specific

gravity other than 0.60, apply the multiplying factor as given

in Table 3.

3. After threading and reaming the ends, inspect piping and

remove loose dirt and chips.

4. Support piping so that no strains are imposed on unit or

controls.

5. Use two wrenches when connecting piping to unit controls.

Length Diameter of Pipe — Inches

of Pipe

in Ft. 1/2 3/4 1 1-1/4 1-1/2

15 76 218 440 750 1220

30 73 152 285 590 890

45 44 124 260 435 700

60 50 105 190 400 610

75 97 200 345 545

90 88 160 320 490

105 80 168 285 450

120 158 270 420

150 120 242 380

180 128 225 350

210 205 320

240 190 300

270 178 285

300 170 270

450 140 226

600 119 192

Length Diameter of Pipe — Inches

of Pipe

in Ft. 2 3 4 6 8

15 2480 6500 12880 38700 79000

30 1650 4700 9700 27370 55850

45 1475 3900 7900 23350 45600

60 1150 3250 6800 19330 39500

75 1120 3000 6000 17310 35300

90 930 2600 5400 15800 32250

105 920 2450 5100 14620 29650

120 860 2300 4800 15680 27920

150 710 2000 4100 12240 25000

180 720 1950 4000 11160 22800

210 660 1780 3700 10330 21100

240 620 1680 3490 9600 19740

270 580 1580 3250 9000 18610

300 545 1490 3000 8500 17660

450 450 1230 2500 7000 14420

600 380 1030 2130 6000 12480

Table 2

Gas Pipe Capacities

In Cu. Ft. per Hour with Pressure Drop of 0.3 in W.C. with Specific Gravity 0.60.

Table 3

Specific Gravity Conversion Factors

Multiplying factors to be used with Table 1 when the specific gravity of gas is

other than 0.60.

Natural Gas Propane Gas

Specific Specific

Gravity Factor Gravity Factor

0.55 1.04 1.50 0.633

0.60 1.00 1.53 0.626

0.65 0.962 1.60 0.612

Figure 9

Horizontal Venting - Two Pipes

METAL

SLEEVE

FIBER GLASS

INSULATION

MIN. 2"

2" MIN.

VENT TERMINATION

SUPPORT BRACKET

(where required)

(Make from 1" x 1" steel angle)

9"

9"

45

1"

METAL

SLEEVE

2" MIN.

VENT PIPE

DIAMETER

METAL FACE

PLATE 1"

Figure 10

Exhaust Vent Construction Through Combustible Walls

and Support Bracket

7

CAUTION

Gas pressure to unit heater controls must never exceed 14"

W.C. (1/2 psi).

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).

The appliance should be isolated from the gas supply piping

system by closing its field installed manual shut-off valve.

Heater Parts from ACF Greenhouses

INSTALLATION

8

6. Provide a drip pocket before each unit and in the line where

low spots cannot be avoided. (See Figure 7).

7. Take-off to unit should come fro top or side of main to avoid

trapping condensate.

8. Piping, subject to wide temperature variations, should be

insulated.

9. Pitch piping up toward unit at least 1/4" per 15' of horizontal

run.

10. Compounds used on threaded joints of gas piping must be

resistant to action of liquefied petroleum gases.

11. Purge air before lighting unit by disconnecting pilot tubing at

combination gas control. In no case should line be purged

into heat exchanger.

12. After installation, check system for gas leaks, using a soap

solution.

13. Install a ground joint union and a manual shut off valve

immediately upstream of the unit including a 1/8" NPT

plugged tapping accessible for test gage connection. (See

Figure 7).

14. Allow at least 5 feet of piping between any high pressure

regulator and unit control string.

15. When Pressure/Leak testing, pressures above 14'' 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.

Wiring General

All field installed wiring must be done in accordance with the

National Electrical Code ANSI/NFPA 70 — Latest Edition or

Canadian Electrical Code CSA C22.1 Part 1 or local codes.

Unit must be electrically grounded according to these codes.

See wiring diagram shipped with unit. For optional wiring

diagrams see Bulletin 6-453.

The power to these units should be protected with a fused

disconnect. Units for use with three-phase electric power must

be provided with a motor starter having properly sized overload

protection.

Location of thermostat should be determined by heating

requirements and be mounted on an inside wall about 5' above

floor level . . . where it will not be affected by heat from the unit

or other sources, or drafts from frequently opened doors. See

instructions packed with thermostat.

Installation of Blower Models (BSH Units)

Attachment of Field Installed Ductwork,

Blower BSH Models Only

Burned-out heat exchanger and shorter equipment life will

result from not providing uniform air distribution.

When installing unit, always follow good duct design practices

for even distribution of the air across the heat exchanger.

Recommended layouts are shown below. 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 figures below.

2. Provide removable access panels in the ductwork on the

downstream side of the unit. 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 (cfm).

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 proper blower enclosure as shown.

on page 19.

Installation of Blower Units (BSH)

Determining Blower Speed

The drive assembly and fan motor on all gas-fired blower units

are factory assembled. The adjustable motor sheave has been

pre-set to obtain maximum air flow without any external static

pressure. The motor sheave should be adjusted as required

when the unit is to be operated at other air flows and/or with

external static pressures. Adjustment must always be within the

performance range shown on pages 14 and 15 and the

temperature rise range shown on the unit’s rating plate.

To determine the proper blower speed and motor shave turns

open, the conditions under which the unit is to operate must be

know. If the blower unit is to be used without duct work, nozzles

or filters, the only criteria for determining the motor sheave

turns open and blower speed is the amount of air flow to be

delivered. The performance tables for blower models are shown

on pages 14 and 15. As an example, a model BSH150 unit

GAS

SUPPLY LINE

GAS

SUPPLY LINE

GROUND

JOINT

UNION

3"

MIN.

DRIP

POCKET

PLUGGED

1/8" NPT TEST

GAGE CONNECTION

TO

CONTROLS

A manual shut off valve with

1/8' N.P.T. plugged tapping,

accessible for test gage

connection must be installed

immediately upstream of the

gas supply connection to the

appliance.

Figure 7

Recommended Piping to Controls

CAUTION

Disconnect power supply before making wiring connections to

prevent electrical shock and equipment damage. ALL UNITS

MUST BE WIRED STRICTLY IN ACCORDANCE WITH

WIRING DIAGRAM FURNISHED WITH UNIT.

ANY WIRING DIFFERENT FROM WIRING DIAGRAM MAY BE

HAZARDOUS TO PERSONS AND PROPERTY.

Any damage to or failure of Modine units caused by incorrect

wiring of the units is not covered by MODINE’S STANDARD

WARRANTY (see Back Cover).

CAUTION

Proper air flow and distribution, across the hat exchanger must

be provided to prevent early failure of the blower unit heater.

CAUTION

Do not attempt to attach ductwork of any kind to propeller PSH

models.

CAUTION

Check for red heat exchanger tubes. If bottom of tubes become

red while blower unit is in operation, check for proper air volume

and air distribution. Adjust blower speed or correct discharge

duct design to correct problem.

Heater Parts from ACF Greenhouses

INSTALLATION

9

without filters operating with one external static pressure, that

is, no duct work, nozzles, etc., and is to deliver an air flow of

2071 cfm (cfm = cubic feet of air) requires that the unit be

supplied with a 1/2 hp motor, a C25 drive and, the motor

sheave set at 5 turns open to achieve a blower speed of 255

rpm (see performance table for units without blower enclosure,

page 14). See “Blower Adjustments” for setting of motor sheave

turns open.

If a blower unit is to be used with ductwork or nozzles, 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. Any device added externally to the unit, and

which the air must pass through, causes a resistance to air

flow. This resistance is called pressure loss. The total of the

pressure losses must be determined before adjusting the

blower speed.

If Modine filters are used, the expected pressure loss through

the filters is included in performance data on page 15. If Modine

supplied discharge nozzles are used, the expected pressure

loss of the nozzles can be found footnoted at the bottom of

page 10. If filters, nozzles, 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 external 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, let’s say a model BSH150 is to be used with a

Modine supplied blower enclosure, Modine supplied filters, are

to be attached to ductwork supplied by others, and the unit is to

move 2071 cfm of air flow against an external static pressure of

0.2" W.C. static pressure, it is seen that the unit will require a

1/2 hp motor using a C22 drive, and the motor sheave should

be set at 1 turn open to achieve a blower speed of 415 rpm.

See “Blower Adjustments” for setting of motor sheave turns

open.

To Install (Figure 8):

1. Remove and discard the tie down strap and the shipping

block beneath the belt tension adjusting screw. (Not used

on all models.)

2. Adjust belt tension adjusting screw for a belt deflection of

approximately 3/4" with five pounds of force applied midway

between the sheaves (refer to Figure 9a). 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.

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

initial unit operation the blower shaft should be lubricated at

the bearings with SAE20 oil. This will reduce initial friction

and start the plastic lubricant flowing.

4. Make electrical connections according to the wiring

diagram.

5. 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.

6. 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.

7. It is the installer’s responsibility to adjust the motor sheave to

provide the specified blower performance as listed on pages

14 and 15, for blower settings different

Recommended Installations Dimension “B” Should Never

Be Less than 1/2 of “A”

A

3" MIN.

12"

MIN.

3" MAX.

TURNING

VANES

12"

B

BAFFLE

12"

MIN.

A

B

BAFFLE

TURNING

VANES

A

BAFFLE

B

12" MIN.

B

3" MAX.

TURNING

VANES

3" MIN.

A

A

B

12"

MIN.

12"

MIN.

TURNING

VANES

SIDE VIEW SIDE VIEW TOP VIEW

SIDE VIEW SIDE VIEW TOP VIEW

D E F

A B C

Figure 8

Blower Model Installation

Threaded Rod

Mounting Brackets on

Blower Assembly

Motor Mounting

Bracket

Motor Sheave

(Movable Face

to Outside)

Motor

Adjustment

Screw

Blower Housing

Combustion Air Inlet

Blower

Sheave

Heater Parts from ACF Greenhouses

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 23 for

model number nomenclature) and matching that number

with those shown on page 25. From the listing the drive

number can be determined.

8. Blower sheave and motor sheave should be measured to

assure correct drive is on unit. Refer to page 25 for drive sizes.

Blower Adjustments

Following electrical connections, check blower rotation to

assure blow-through heating. If necessary, change 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 14 and 15 according to the job specifications.

A single-speed motor with an adjustable motor sheave is

supplied with these units. If blower speed changes are required,

adjust motor sheave as follows:

NOTE: Do not fire unit 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 8 and to Blower

Drive Selection on pages 14 and 15 to determine proper

blower RPM.

2. Loosen and take belt off of motor sheave.

3. Loosen set screw on outer side of adjustable motor sheave.

(see Figure 9).

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 belt tension 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

9a). Since the belt tension will decrease dramatically after an

initial run-in period, it is necessary top 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 14

and 15 to assure actual desired air flow is being achieved.

11. If adjustments are required, re-check motor amps after final

blower speed adjustment.

Prior to Operation

Although this unit has been assembled and fire-tested at the

factory, the following pre-operational procedures should be

performed to assure proper on-site operation.

1. Turn off power.

2. Check burner to insure proper alignment.

3. Check fan clearance. Fan should not contact casing when

spun by hand.

4. Check all electrical connections to be sure they are secure.

5. If you are not familiar with the unit’s controls (i.e.

combination gas control), refer to the control manufacturer’s

literature supplied with the unit.

6. Check that all horizontal deflector blades are open a

minimum of 30° as measured from vertical.

Lighting Instructions (Also on Unit)

1. Turn off power. Turn thermostat down. Move gas control

knob (or lever) to OFF and wait 5 minutes.

2. Move gas control knob (or lever) to ON.

3. Set thermostat at desired setting. (Pilot and main burner

will light automatically when thermostat calls for heat).

Shut Down Instructions

Turn off power and close manual gas valve.

After Initial Start Up

1. Check pilot flame adjustment as discussed below.

2. Check gas piping for leaks with a soap bubble solution to

insure safe operation.

3. Check gas input rate, as described below, to assure proper

gas flow and pressure.

Figure 9

Motor Sheave Adjustment

Figure 9a

Belt Tension Adjustment

TOWARD MOTOR

SET SCREW

ADJUSTABLE HALF

OF SHEAVE

3/4" DEFLECTION

WITH 5# FORCE

TOWARD MOTOR

SET SCREW

ADJUSTABLE HALF

OF SHEAVE

10

OPERATION

CAUTION

Start-up and adjustment procedures should be performed by a

qualified serviceman.

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 11"-14" W.C. on propane. If inlet pressure

is too high, install an additional pressure regulator upstream of

the combination gas control.

The pilot flame must be adjusted as described below. Purging

of air from gas lines, piping, and lighting the pilot should be

performed as described in ANSI Z223.1-latest edition “National

Fuel Gas Code” (CAN/CGA-B149 in Canada).

Be sure no obstructions block air intake and discharge of unit

heater.

Heater Parts from ACF Greenhouses

11

Pilot Flame Adjustment

The pilot is orificed to burn properly with an inlet pressure of 6-

7" W.C. on natural gas and 11-14" W.C. on propane gas, but

final adjustment must be made after installation. Adjust to have

a soft steady flame 3/4" to 1" long and encompassing 3/8"-1/2"

of the tip of the thermocouple or flame sensing rod. Normally

this flame will produce satisfactory results. To adjust the flame

use pilot adjustment screw on combination gas control (for

location, see the combination gas control literature supplied

with unit). If the pilot flame is longer and larger than shown by

Figure 7, it is possible that it may cause soot and/or impinge on

the heat exchanger causing burnout. If the pilot flame is shorter

than shown it may cause poor ignition and result in the controls

not opening the combination gas control. A short flame can be

caused by a dirty pilot orifice. Pilot flame conditions should be

observed periodically to assure trouble-free operation.

Natural Gas Flame Control

Control of burner flames on units utilizing natural gas is

achieved by moving the gas manifold to either increase or

decrease primary combustion air. Prior to flame adjustment,

operate unit with casing closed for about five minutes.

Operation can be viewed through the sight glass on the rear of

the unit (see Figure 11a).

Lack of primary air will cause soft yellow-tipped flames. Excess

primary air produces whort, well-defined flames with a

tendency to lift off the burner ports. Proper operation with

natural gas provides a soft blue flame with a well-defined inner

cone.

To increase primary air, remove the access panel (see Figure

11a and 11b). Next loosen the fastening screws holding the

hinged bottom pan in place and lower the bottom pan (see

Figure 14). With the bottom pan lowered, loosen the manifold

mounting screws (see Figure 14) and tap the manifold away

from the mixer tubes until the yellow flames disappear. To

decrease the primary air, move the manifold closer to the mixer

tubes until flames no longer lift from burner ports, but being

careful not to cause yellow tipping. Retighten manifold mounting

screws after adjustment.

Once adjustment has been made all around the bottom pan.

Replace the access panel, again checking for a good tight seal

around the entire perimeter of the access panel. Observe the

burner flame through the sight glass to make sure proper flame

adjustment has been achieved.

Propane Gas Flame Control

Adjustable primary air shutters are attached to the orifices on

the gas manifold for units equipped for propane gas operation

(see Figure 15). An optimum flame will show a slight yellow tip.

Prior to flame adjustment, operate unit heater with casing

closed for at least five minutes. If flame adjustment is

necessary, remove the access panel (see Figure 11a and 11b)

and adjust primary air shutters. Loosen wing screws and push

shutters forward to reduce primary air until yellow flame tips

appear. Then increase primary air until yellow tips diminish to

just a slight yellow tip and an clean blue flame with a well-

defined inner cone appears.

It may also be necessary to adjust the manifold position in

addition to adjusting air shutters to obtain the proper flame.

Follow the instructions under “Natural Gas Flame Control” for

adjusting the manifold.

Replace the access panel making suer a good tight seal is

achieved around the entire perimeter of the access panel.

Observe the burner flame through the sight glass to make sure

proper flame adjustment has been achieved.

CHECKING INPUT RATE

Input Adjustments

The gas pressure regulator (part of the combination gas

control) is adjusted at the factory for average gas conditions. It

is important that gas be supplied to the heater in accordance

with the input rating stamped on the serial plate. Actual input

rating stamped on the serial plate. Actual input should be

checked and necessary adjustments made after the hater is

installed. Over-firing, a result of too high an input, reduces the

life of the unit, and increases maintenance. Under no

circumstances should the input exceed that shown on the rating

plate.

(A) Meter Timing Method

1. Shut off all other gas-burning equipment, including other

pilot lights served by the gas meter.

2. Start the heater and determine the number of seconds it

takes to consume 1 cu. ft. of gas. Two basic formulas are

useful:

F1 = 3600 C/T

F2 = F1/C

Where

F1 = input to heater, Btuh.

F2 = input to heater, cu. ft. per hr.

C = heating value of gas, Btu per cu. ft.

T = time to consume 1 cu. ft. of gas in sec.

The heating value of gas may be determined from the local

utility or gas dealer.

These are representative values:

GAS Btu per cu. ft.

Natural 1000-1150

Propane 2500

3. If the seconds for 1 cu. ft. are more (input less) than shown

in Table 5 for model being tested, remove the access panel

(see Figure 11a). With access panel removed, locate the

combination gas control and pressure regulator adjustment

screw (see Figure 11b). Remove the cap screw from he

pressure regulator and take one clockwise turn at a time on

the adjustment screw until the correct time is obtained. If

the seconds are less (input greater)than indicated in the

table, follow the same procedure in a counter-clockwise

direction.

If the correct number of seconds cannot be obtained check

orifice size. Correct orifices can be obtained from Modine

Manufacturing Company, Racine, Wisconsin. When requesting

orifices, state type of gas, heating value, and its specific gravity.

Also give model number of unit.

For example, if the input to the heater is 100,000 Btuh and the

heating value of the gas is 1000 Btu per cu. ft., then, by the

second formula, the input is 100 cu. ft. per hr. Table 4 indicates

the time for one revolution of various size meter dials with

various input rates. If a 1 cu. ft. meter dial is used, we proceed

down the cu. ft. column to 100 cu. ft. per hr. and then

horizontally to the left to determine a time of 36 seconds for

one revolution of the dial. Similarly, if the 1/2 cu. ft. dial is used,

we determine a time of 18 seconds for one revolution at the

required input.

After proper firing rate has been achieved, replace regulator

cap crew and replace access panel, making sure a good tight

seal is achieved around the entire perimeter of the access

panel.

Heater Parts from ACF Greenhouses

Table 4

Meter-Timing Gas

(Time required for one revolution is charted for various size

meter dials and various rates of gas input in cu. ft. per hour. To

convert to Btuh, multiply by the heating value of the gas used.)

Figure 10

Dials of Typical Gas Meter

(B) Pressure Method

The pressure method determines input by measuring the

pressure of the gas in the manifold in inches of water.

1. Determine correct manifold pressure from Table 5.

2. Remove access panel (see Figure 11a) and locate

combination gas control.

3. Move gas control knob (or lever) to off.

4. Remove the 1/8" pipe plug in outlet pressure tap in

combination gas control (see Figure 11b) and attach water

manometer or “U” tube which is at least 12" high.

5. Follow lighting instructions and turn thermostat up to get

unit to fire.

6. If pressure as indicated by “U” tube is less than 1/2" higher

or lower than indicated in TAble 5, adjust regulator as

described under “meter-Timing method,” Step 3.

If pressure as indicated by “U” tube is more than 1/2"

higher or lower than indicated in Table 5, check inlet

pressure at unit. The inlet pressure should be 6"-7" W.C.

pressure on natural gas and 11"-14" W.C. on propane gas.

After adjustment move gas control knob (or level) to off and

replace 1/8" pipe plug. With plug in place move knob (or leave)

to on.) Replace the access panel, making use a good tight seal

is achieved around the entire perimeter of the access panel.

VENTING

LABEL

POWER EXHAUSTER

PRESSURE

SWITCH

JUNCTION

BOX

FAN GUARD

FAN MOTOR

SIGHT GLASS

GAS SUPPLY

CONNECTION

(Not Shown)

ACCESS PANEL

COMBUSTION AIR

INLET COLLAR

LIGHTING

INSTRUCTION &

RATING PLATE

12

CHECKING INPUT RATE

Figure 11b

COMBINATION

GAS CONTROL

PRESSURE REGULATOR

ADJUSTMENT SCREW

(UNDER CAP SCREW)

MANIFOLD

PRESSURE TAP

PILOT

TUBING

IGNITION

CONTROL

IGNITION

CABLE

MAIN BURNER

MANIFOLD

Time for 1 Input, Cu. Ft. per Hour, When Meter Dial Size is:

Revolution,

Sec. 1/2 cu. ft. 1 cu. ft. 2 cu. ft. 5 cu. ft.

10 180 360 720 1800

12 150 300 600 1500

14 129 257 514 1286

16 112 225 450 1125

18 100 200 400 1000

20 90 180 360 900

22 82 164 327 818

24 75 150 300 750

26 69 138 277 692

28 64 129 257 643

30 60 120 240 600

35 51 103 206 514

40 45 90 180 450

45 40 80 160 400

50 36 72 144 360

55 33 65 131 327

60 30 60 120 300

70 26 51 103 257

80 22 45 90 225

90 20 40 80 200

100 18 36 72 180

120 15 30 60 150

Figure 11a

CAUTION

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 11"-14" W.C. on propane. If inlet pressure

is too high, install and additional pressure regulator upstream of

the combination gas control.

Important —Inlet pressure and manifold pressure must be

checked with unit in operation when making final adjustments.

Heater Parts from ACF Greenhouses

13

CHECKING INPUT RATE

Pilot Orifice Identity Numbers

Pilot Burner Identity No. Identity No.

Manufacturer Natural Gas Propane Gas

Honeywell BCR-18 BCR-11 or -12

Robertshaw

Johnson 7715 4710

1 8

N

➁

1 O

P

L

➁As number appears on top of pilot orifice.

Table 6

Orifice Drill sizes with Decimal Equivalents

Main Burner Orifices

Dia. Dia.

Drill Decimal Drill Decimal

Size Equivalent Size Equivalent

19 .1660 37 .1040

21 .1590 39 .0995

22 .1570 40 .0980

24 .1520 41 .0960

27 .1440 43 .0890

29 .1360 44 .0860

Table 5

Manifold Pressure & Gas Consumption➀

Natural Propane

Typical Heating Value (BTU/Cu.Ft.) 1040 2500 No. of

Model Specific Gravity 0.60 1.53 Orifices

Manifold Pressure inches w.c. 3.5 10.0

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 52

PSH130 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 1.42

BSH130 Sec/cu.ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 69 2

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 41

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 60

PSH150 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 1.64

BSH150 Sec/cu.ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 60 3

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 44

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 68

PSH170 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 1.86

BSH170 Sec/cu. ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 60 3

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 43

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 90

PSH225 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 2.46

BSH225 Sec/cu.ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 40 3

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 37

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 112

PSH280 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 3.06

BSH280 Sec/cu. ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 32 4

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 39

Cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 136

PSH340 Gal/Hr. Propane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . — 3.72

BSH340 Sec/cu. ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 26 5

Orifice Drill Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 40

➀Above gases based on average standards. Units can be furnished for gases of different values and specific gravities. (Gas/Hr. Propane based on 60°F, 30" Hg, 91,500

Btu/Gal.

➁

Heater Parts from ACF Greenhouses

14

➃At 65°F ambient and unit fired at full rated input. Max mounting height as measured from bottom of unit, and without deflector hoods.

➄Note: Ratings shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea

level. (In Canada see Rating Plate.) Reduction of ratings requires use of high altitude kit.

➅Data listed is for standard 115-volt, 60-Hertz, single-phase motors. All single phase motors are totally enclosed and thermal overload protected.

A

H

D (OPENING)

BB

E

AA

B

KWX

F

C

CC DD

J

L

(MIN. DISTANCE TO WALL)

➁

GAS SUPPLY

CONNECTION

27/8"

FF

G

EE

33/8"

31/8"

4" ROUND FOR

PSH 130 thru 225

MODELS ONLY COMBUSTION AIR

INLET COLLAR

(SIZES 280 & 340)

COMBUSTION AIR

INLET COLLAR

(SIZES 130-225) 31/8"

41/2"

OVAL COLLAR FITS

6" ROUND PIPE FOR

MODELS PSH 280 & 340 ONLY

K

The minimum recommended installation clearance from

top and rear of unit (motor) is six inches. Clearance to

sides is eighteen inches, and clearance at bottom should

equal “C” dimension shown in table for each model.

DO NOT USE PROPELLER UNITS WITH DUCT WORK.

Dimensions (in inches) — PSH

Performance—PSH

Dimension PSH 130 PSH 150 PSH 170 PSH 225 PSH 280 PSH 340

A23-1/2 25-5/8 25-5/8 28-5/8 33-5/8 40

B35-1/2 40-1/2 40-1/2 40-1/2 40-1/2 40-1/2

C22 25 25 25 25 25

D21-1/16 23-3/16 23-3/16 26-3/16 31-3/16 37-1/2

E20 24 24 24 24 24

F12-1/2 14-1/2 14-1/2 14-1/2 — —

G1 2 2 2 1-5/8 1-5/8

H19-7/8 22 22 25 30 36-3/8

AA 8 9 9 9 9 9

BB 7 1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2

CC 1 1/8 1/8 1/8 1-3/8 1-3/8

DD 3-1/4 3-1/4 3-1/4 3-1/4 3-5/8 3-5/8

EE 32-9/16 36 36 36 36-1/16 36-1/16

FF 6-1/2 6-1/2 6-1/2 6-1/2 5-7/8 5-7/8

J (Round) 4 4 4 4 6 6

K➀3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16

Natural Gas Connections ➂1/2 1/2 1/2 1/2 3/4 3/4

W— — — — 5 5

X— — — — 16 16

L38-3/8 42 42 42 42 48

Fan Diameters 18 20 20 22 22 24

Approx. Ship. Wt. 198 244 246 272 328 422

➀PSH 130 through PSH 225 — 2 holes.

PSH 280 & PSH 340 — 4 holes.

➁Dimension from rear of unit burner box to center line of gas pipe connection is 6-23/32" for PSH 130 and 6-1/2" for all other models.

➂For natural gas.

Btu/Hr Air Max. Mtg. Heat Standard Motor Data ➅

Input Btu/Hr CFM Outlet Temp. Height Throw

Model ➄Output @ 70°F Velocity Rise (Ft.) ➃(Ft.) ➃HP Amps RPM Type

PSH 130 130,000 106,600 2540 940 39 12 50 1/6 2.8 1075 PSC

PSH 150 150,000 123,000 2900 810 39 16 50 1/6 2.8 1075 PSC

PSH 170 170,000 139,400 2900 820 45 16 50 1/6 2.8 1075 PSC

PSH 225 225,000 184,000 4275 1060 40 20 65 1/3 5.4 1075 PSC

PSH 280 280,000 229,600 4400 960 48 20 65 1/2 6.8 1075 PSC

PSH 340 340,000 275,400 5300 980 48 20 65 1/2 6.8 1075 PSC

SEPARATED COMBUSTION PROPELLER UNIT HEATERS

Heater Parts from ACF Greenhouses

SEPARATED COMBUSTION BLOWER UNIT HEATERS

15

W

X

F

C

G

M

N

S

O

K

/16"

9

5

CC

J

➀ L = C + P (APPROX.)

DD

P

Q x V

R x T

/8"

7

4

/4"

3

FILTER RACK

(OPTIONAL)

BLOWER

ENCLOSURE

(OPTIONAL)

OVAL COLLAR FITS

6" ROUND PIPE FOR

MODELS BSH 280 & 340 ONLY

A

H

D (OPENING)

BB

E

AA

B

K

➁

GAS SUPPLY

CONNECTION

27/8"

FF

/16 "

9

5

/2"

1

4

/8"

1

3

COMBUSTION AIR

INLET COLLAR

(SIZES 130-225)

COMBUSTION AIR

INLET COLLAR

(SIZES 130 - 225) 33/8"

31/8"

EE

4" ROUND FOR

BSH 130 thru 225

MODELS ONLY

The minimum recommended

installation clearance from top and

rear of unit (motor) is six inches.

Clearance to sides is eighteen

inches, and clearance at bottom

should equal “C” dimension shown

in table for each model.

Dimensions (in inches) — BSH

Dimension BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

A23-1/2 25-5/8 25-5/8 25-5/8 33-5/8 40

B35-1/2 40-1/2 40-1/2 40-1/2 40-1/2 40-1/2

C22 25 25 25 25 25

D21-1/16 23-3/16 23-3/16 26-3/16 31-3/16 37-1/2

E20 24 24 24 24 24

F12-1/2 14-1/2 14-1/2 14-1/2 — —

G1 2 2 2 1-5/8 1-5/8

H19-7/8 22 22 25 30 36-3/8

AA 8 9 9 9 9 9

BB 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2

CC 1 1/8 1/8 1/8 1 3/8 1 3/8

DD 3-1/4 3-1/4 3-1/4 3-1/4 3-5/8 3-5/8

EE 32-9/16 36 36 36 36-1/16 36-1/16

FF 6-1/2 6-1/2 6-1/2 6-1/2 5-7/8 5-7/8

J (Round) 4 4 4 4 6 6

K➂3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16

Natural Gas Connections 1/2 1/2 1/2 1/2 3/4 3/4

W— — — — 5 5

X— — — — 16 16

M47-3/4 52-3/8 52-3/8 52-3/8 52-3/8 58-1/2

N➃21 24-1/2 24-1/2 24-1/2 17-15/16 22-1/16

O7-1/4 8-1/2 8-1/2 8-1/2 8-1/2 8-1/2

P30 34 34 34 36 36

Blower Q (Height) 21-3/8 25 25 25 25 25

Enclosure Inlet Duct/R (Height) 20 23-3/4 23-5/8 23-5/8 23-5/8 23-5/8

(Accessory) Filter Rack Width T 27-1/2 32-3/4 32-3/4 32-3/4 42-7/8 42-7/8

Width V 29 34 34 34 44-1/4 44-1/4

S (Ctr. to Ctr. of Blower Mtg. Holes 17-3/8 20-3/8 20-3/8 20-3/8 20-3/8 20-3/8

Motor Pulley Diameter ➄3 3 3 3 3 3

Standard Blower Pulley Diameter 13 13 13 13 9 9

Approx. Shipping Weight 240 322 322 344 436 510

➀On blower units L = C + P is distance from front of unit to back of blower enclosure and minimum of distance to wall.

➁Dimension from rear of unit burner box to center line of gas pipe connection is 6-23/32" for BSH 130 and 6-1/2" for all other models.

➂BSH 130 through BSH 225 – 4 holes. BSH 280 and BSH 340 – 6 holes.

➃Distance between mounting hole in unit casing and mounting hole on blower, except on 280 and 340, then distance from rear mounting hole in casing.

➄Motor pulley is adjustable.

➅At 65°F ambient and unit fired at full rated input. Max mounting height as measured from bottom of unit, and without deflector hoods.

➆Note: Ratings shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea

level. (In Canada see Rating Plate.) Reduction of ratings requires use of high altitude kit.

➇Data listed is for standard 115-volt, 60-Hertz, single-phase motors. All single phase motors are totally enclosed and thermal overload protected.

Performance — BSH

Outlet Max. Mtg. Heat

CFM Velocity Air Height (Ft.) Throw (Ft.)

Btu/Hr @ 55°F @55°F Temp. @ 55°F @ 55°F Standard Motor Data ➇

Input Btu/Hr Temp. Temp. CFM Rise Temp. Rise Temp. Rise

Model ➆Output Rise Rise Range Range ➅ ➅ HP Amps RPM Type

BSH 130 130,000 106,600 1795 682 1161-1795 55-85 11 30 1/4 5.4 1725 SP

BSH 150 150,000 123,000 2071 596 1340-2071 55-85 10 25 1/2 7.8 1725 SP

BSH 170 170,000 139,400 2347 675 1519-2347 55085 11 30 1/2 7.8 1725 SP

BSH 225 225,000 182,250 3068 781 1985-3068 55-85 13 35 3/4 10.2 1725 SP

BSH 280 280,000 229,600 3865 852 2501-3865 55-85 14 40 1 13.2 1725 CP

BSH 340 340,000 275,400 4636 869 3000-4636 55-85 15 40 1 13.2 1725 CP

Note: Mounting heights and throws for BSH models, without ductwork or nozzles, and at a cfm yielding a 55°F

temperature rise are the same as those listed for equivalent size PSH units.

Heater Parts from ACF Greenhouses

0.0 Static Pressure 0.1 Static Pressure 0.2 Static Pressure 0.3 Static Pressure 0.4 Static Pressure

Air Outlet Air Pulley Pulley Pulley

Model Flow

Velocity

Temp. RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM

Number CFM FPM Rise F ➄HP No. Open ➄HP No. Open ➄HP No. Open ➄HP

1795 682 55 385 0 460 1 520 1 570 —

1645 630 60 355 1 435 1/3 -57 2 500 1-1/2 550 1/2 -96 3

1519 587 65 325 2 415 2-1/2 480 2 535

BSH 1410 549 70 305 1/4 -21 3 395 3 465 1/3 -15 2-1/2 520 1/3

130 1316 517 75 285 3-1/2 380 0 450 3 510

1234 489 80 270 4-1/2 365 1/4 -21 1/2 440 3 500

1161 464 85 250 5 350 1-1/2 430 3-1/2 490

2071 596 55 255 1/2 -25 5 330 2 390 0 445

1898 551 60 235 — — — 310 3 375 1/2 430

1752 513 65 220 — — — 295 3-1/2 360 1 415 1/2

BSH 1627 480 70 205 — — — 280 1/2 -25 4 245 1/2 -25 1-1/2 405

150 1519 452 75 190 — — — 270 4-1/2 335 2 395

1424 427 80 180 — — — 260 4-1/2 325 2 390 1/2

1340 405 85 170 — — — 250 5 315 2-1/2 380

2347 675 55 290 3-1/2 360 1 420 1/2 -22 1 470 3/4

2151 624 60 265 1/2 -25 4-1/2 335 2 400 1-1/2 455

1986 581 65 245 5 305 2-1/2 385 0 440

BSH 1844 544 70 230 — — — 290 1/2 -25 3 370 1/2 425

170 1721 512 75 215 — — — 280 3-1/2 355 1/2 -25 1 415

1613 484 80 200 — — — 270 4 345 1-1/2 405 1/2

1519 459 85 190 — — — 250 4-1/2 335 2 395

3068 781 55 385 0 440 3/4 -22 1/2 490 1-1/2 535

2813 722 60 345 1-1/2 415 1 465 2-1/2 510

2596 672 65 315 3/4 -25 2-1/2 390 0 440 3/4 -18 3 485

BSH 2411 630 70 285 3-1/2 365 3/4 -25 1/2 420 3-1/2 470 3/4

225 2250 592 75 260 4-1/2 350 1 405 4 455

2109 560 80 240 — — — 330 2 390 3/4 -25 0 440

1985 531 85 220 — — — 315 2-1/2 375 1/2 425

3865 725 55 530 1/2 575

1-1/2

-23 3-

1/2

615

1-1/2

-23 2-1/2 645

3543 670 60 490 1-1/2 535 1/2 580 3-1/2 615

1-1/2

3271 624 65 450 3 500 1-1/2 545 1/2 585

BSH 3037 584 70 420 1 -18 3-1/2 470 2-1/2 520 1 565

280 2835 550 75 395 4 445 1 -18 3 495 1 -18 1-1/2 540 1

2657 519 80 370 5 425 3-1/2 475 2 525

2501 493 85 350 — — — 405 4 455 2-1/2 510

4636 869 55 610

1-1/2

-16 1/2 655 2 -32 1 690 2 -32 0 725 —

4250 804 60 550 0 605

1-1/2

-16 1/2 645 1-1/2 685 2

3923 748 65 500 1-1/2 560 0 605

1-1/2

-16 1/2 645

BSH 3643 701 70 460 2-1/2 525 1 575 1 615

340 3400 659 75 420 1 -219 3-1/2 490 1 -219 1-1/2 545 1/2 590

1-1/2

3188 623 80 390 4-1/2 465 2-1/2 520 1 -219 1 570

3000 591 85 360 5 440 3 500 1-1/2 550 1

From this Catalog For 575V➇

HP Drive HP Drive

BSH130 1/3 -13 1/3 -14

1/4 -21 1/4 -165

1/3 -15 1/3 -166

1/3 -57 1/4 -167

BSH280 1-1/2 -23 1-1/2 -177

BSH340 1-1/2 -16 1-1/2 -178

16

PERFORMANCE DATA — BLOWER UNIT HEATERS

Blower Models With or Without Blower Enclosures ➀ ➁ ➃ ➄

Important: Note for 575V Only➆

Pulley Pulley

Drive Turns RPM Drive Turns

No. Open ➄HP No. Open

— — 620 2

605 1/2 -96 2

1/2 590 2.5

-15 1 580 2.5

1 570 1/3 -13 1-1/2

1-1/2 560 1-1/2

2 550 2

0 500 3/4 -18 1-1/2

1/2 485 2

-22 1 475 2

1-1/2 470 2

2 460 2-1/2

-25 0 455 1/2 -22 0

0 450 0

-18 2 520 1

0 505 1-1/2

1/2 495 3/4 -18 1-1/2

1 485 2

1 475 2

-22 1-1/2 465 2-1/2

2 460 1/2 -22 0

1/2 575 1 -16 1

1 555 0

2 535 1/2

-18 2-1/2 520 1

2-1/2 510 3/4 -18 1

3 495 1-1/2

3-1/2 485 2

1-1/2 670

1-1/2

-23 1/2

-23 2-1/2 640 1-1/2

3-1/2 620 2

0 595 1 -16 1/2

-18 1/2 580 1

1 560 1 -18 0

1 545 1/2

— — 750 — — —

-32 0 710 — — —

1-1/2 680 2 -32 0

0 650 1

-16 1 625 0

1-1/2 605

1-1/2

-16 1/2

-219 0 585 1

➀Shaded area indicates unit standard motor and drive range.

➁For unit operation in non-shaded area; specify on order optional motor and drive number.

➂Ratings shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level.

(Does not apply in Canada — See Rating Plate.)

➃Pulley turns open are approximate. For proper operation, check blower rpm.

➄Rpm and pulley settings shown in bold type, in shaded areas for 0.0 static pressure, indicate factory settings of standard drives.

➆Models not shown use same HP and drive number as cataloged.

➇Performance is the same; motor sheave can accommodate larger shaft.

Model

Number

Heater Parts from ACF Greenhouses

0.0 Static Pressure 0.1 Static Pressure 0.2 Static Pressure 0.3 Static Pressure 0.4 Static Pressure

Air Outlet Air Pulley Pulley Pulley

Model Flow

Velocity

Temp. RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM

Number CFM FPM Rise F ➄HP No. Open ➄HP No. Open ➄HP No. Open ➄HP

1795 682 55 445 1/3 -57 1-1/2 520 1/3 -15 1 575 — — — 615 —

1645 630 60 410 2-1/2 485 1/2 545 1/2 595 —

1519 587 65 375 1/2 460 1 520 1 575 —

BSH 1410 549 70 345 1-1/2 435 1/3 -57 2 500 1/3 -15 1-1/2 560

130 1316 517 75 325 1/4 -21 2 415 2-1/2 480 2 545

1234 489 80 300 3 395 3 460 2-1/2 535 1/3

1161 464 85 285 3-1/2 380 1/4 -21 0 450 3 525

2071 596 55 285 1/2 -25 3-1/2 350 1 415 1/2 -22 1 460

1898 551 60 260 4-1/2 325 2 395 2 445

1752 513 65 235 — — — 305 3 380 0 430 1/2

BSH 1627 480 70 220 — — — 290 1/2 -25 3-1/2 365 1/2 420

150 1519 452 75 205 — — — 280 4 355 1/2 -25 1 405

1424 427 80 190 — — — 265 4 1/2 345 1-1/2 400

1340 405 85 180 — — — 255 5 335 2 390 1/2

2347 675 55 325 2 385 0 445 0 490 3/4

2151 624 60 295 1/2 -25 3-1/2 360 1 425 1/2 -22 1 470

1986 581 65 270 4-1/2 340 1-1/2 405 1-1/2 455

BSH 1844 544 70 250 5 320 1/2 -25 2-1/2 390 0 440

170 1721 512 75 235 — — — 305 3 375 1/2 -25 1/2 425 1/2

1613 484 80 215 — — — 290 3-1/2 365 1/2 415

1519 459 85 205 — — — 275 4 355 1 405

3068 781 55 465 3/4 -18 2 1/2 515 1 550 0 600 1

2813 722 60 420 3 1/2 485 2 515 1 565

2596 672 65 385 0 455 2-1/2 490 1 1/2 540

BSH 2411 630 70 350 1 430 3/4 -18 3-1/2 465 3/4 -18 2 1/2 515

225 2250 592 75 325 3/4 -25 2 410 4 440 3 495 3/4

2109 560 80 300 3 390 4-1/2 425 3-1/2 480

1985 531 85 280 4 375 3/4 -25 1/2 405 4 465

3865 725 55 595

1-1/2

-23 3 645 1-1/2 680

1-1/2

-23 0 705 —

3543 670 60 545 1/2 600

1-1/2

-23 3 640 1-1/2 665

1-1/2

3271 624 65 505 1 1/2 565 4 605 1 -16 1/2 635

BSH 3037 584 70 470 2 1/2 530 1/2 575 1 610

280 2835 550 75 440 1 -18 3 500 1 -18 1-1/2 550 0 585 1

2657 519 80 415 3 1/2 475 2 525 1 -18 1 565

2501 493 85 390 4 1/2 455 2-1/2 505 1-1/2 545 1

4636 869 55 685 2 -32 0 715 — — — 740 — — — 765 —

4250 804 60 615

1-1/2

-16 0 655 2 -32 1 685 2 -32 0 720 —

3923 748 65 560 0 605

1-1/2

-16 1/2 640 1-1/2 680 2

BSH 3643 701 70 515 1 560 0 600

1-1/2

-16 1/2 645

340 3400 659 75 470 1 -219 2 525 1 -219 1 570 1-1/2 615

3188 623 80 435 3 490 1-1/2 540 1 -219 1/2 590

1-1/2

3000 591 85 405 4 465 2-1/2 515 1 565

17

Blower Models With Filter ➀ ➁ ➃ ➄ ➅

➀Shaded area indicates unit standard motor and drive range.

➁For unit operation in non-shaded area; specify on order optional motor and drive number.

➂Ratings shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea

level. (Does not apply in Canada — See Rating Plate.)

➃Pulley turns open are approximate. For proper operation, check blower rpm.

➄Rpm and pulley settings shown in bold type, in shaded areas for 0.0 static pressure on page 10, indicate factory settings of standard drives.

➅Blower models with filter require the use of a blower enclosure.

Pulley Pulley

Drive Turns RPM Drive Turns

No. Open ➄HP No. Open

— — 660 — — —

— — 640 — — —

— — 625 2

0 610 1/2 -96 2

1/2 600 2

-15 1/2 585 1/3 -13 1

1 575 1

0 530 1/2

0 515 1

-22 1/2 505 1-1/2

1 495 3/4 -18 1-1/2

1-1/2 485 2

1 -1/2 480 2

-25 0 475 2

-18 1-1/2 550 0

2 535 1/2

0 520 3/4 -18 1

1/2 510 1

-22 1 500 1-1/2

1 495 1-1/2

1-1/2 485 2

-16 1/2 635 0

1-1/2 610 1 -16 1/2

1/2 590 1

1 575 1

-18 1-1/2 560 0

2 545 3/4 -18 1/2

2-1/4 535 1/2

— — 725 — — —

-23 1/2 690 0

1-1/2 660

1-1/2

-23 1

1/2 635 1-1/2

-16 1 615 0

1-1/2 595 1 -16 1/2

-18 1/2 580 1

— — 795 — — —

— — 745 — — —

-32 0 705 — — —

1-1/2 670 2 -32 1/2

0 640 1-1/2

-16 1 615

1-1/2

-16 0

1-1/2 595 1/2

From this Catalog For 575V➇

HP Drive HP Drive

BSH130 1/3 -13 1/3 -14

1/4 -21 1/4 -165

1/3 -15 1/3 -166

1/3 -57 1/4 -167

BSH280 1-1/2 -23 1-1/2 -177

BSH340 1-1/2 -16 1-1/2 -178

Important: Note for 575V Only➆

➆Models not shown use same HP and drive number as cataloged.

➇Performance is the same; motor sheave can accommodate larger shaft.

Model

Number

Heater Parts from ACF Greenhouses

18

MOTOR DATA

Power Code Description — PSH Models ➀ ➂ ➃

Model PSH130 PSH150 PSH170 PSH225 PSH280 PSH340

Power Electric

Code Power Horsepower

01 115/60/1 1/6 1/6 1/6 1/3 1/2 1/2

02230/60/1 1/6 1/6 1/6 1/3 1/2 1/2

04200/60/3 1/3 1/3 1/3 1/3 1/2 1/2

05200/460/60/3 1/3 1/3 1/3 1/3 1/2 1/2

Power Code Description — BSH Models ➁ ➂ ➃ ➄

Power Model BSH130 BSH150 BSH170 BSH225 BSH280 BSH340

Code Electric Power HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive

01 115/60/1 1/3 -13 3/4 -18 3/4 -18 3/4 -18 1 -16 1-1/2 -16

02230/60/1 1/3 -13 3/4 -18 3/4 -18 3/4 -18 1 -16 1-1/2 -16

03200-208/60/3 1/3 -13 3/4 -18 3/4 -18 3/4 -18 1 -16 1-1/2 -16

04230/460/60/3 1/3 -13 3/4 -18 3/4 -18 3/4 -18 1 -16 1-1/2 -16

81575/60/3 1/3 -14 3/4 -18 3/4 -18 3/4 -18 1 -16 1-1/2 -178

05115/60/1 1/4 -21 1/2 -25 1/2 -25 3/4 -22 1 -18 1 -29

06230/60/1 1/4 -21 1/2 -25 1/2 -25 3/4 -22 1 -18 1 -29

07200-208/60/3 1/4 -21 1/2 -25 1/2 -25 3/4 -22 1 -18 1 -29

08230/460/60/3 1/4 -21 1/2 -25 1/2 -25 3/4 -22 1 -18 1 -29

82575/60/3 1/4 -165 1/2 -25 1/2 -25 3/4 -22 1 -18 1 -29

09115/60/1 1/3 -15 1/2 -22 1/2 -22 1 -16 1-1/2 -23

10230/60/1 1/3 -15 1/2 -22 1/2 -22 1 -16 1-1/2 -23

11200-208/60/3 1/3 -15 1/2 -22 1/2 -22 1 -16 1-1/2 -23 2 -32

12230/460/60/3 1/3 -15 1/2 -22 1/2 -22 1 -16 1-1/2 -23 2 -32

83575/60/3 1/3 -166 1/2 -22 1/2 -22 1 -16 1-1/2 -177 2 -32

13115/60/1 1/3 -57 3/4 -25

14230/60/1 1/3 -57 3/4 -25

15200-208/60/3 1/3 -57 3/4 -25

16200/460/60/3 1/3 -57 3/4 -25

84575/60/3 1/3 -167 3/4 -25

Motor Data and Total Unit Power Requirements — PSH Models

Voltage 115/60/1 230/60/1 200-208/60/3 230/460/3

Motor Motor Total Total Motor Motor Total Total Motor Motor Total Total Motor Motor Total Total

HP Amps Rpm Amps Watts Amps Rpm Amps Watts Amps Rpm Amps Watts Amps Rpm Amps Watts

1/6 2.8 1075 4.6 400 1.5 1075 2.5 400

1/3 5.4 1075 7.2 610 2.5 1075 3.5 610 1.9 1140 2.8 560 2.2/1.1 1140 3.2/1.6 560

1/2 7.5 1075 9.3 800 3.5 1075 4.5 800 2.6 1140 3.5 850 3.0/1.5 1140 4.0/2.0 850

Unit Power Requirements - Blower BSH Models

115/60/1 230/60/1 200-208/60/3 230/460/60/3 575/60/3 ➄

Total Total Total Total Total Total Total Total Total Total

HP Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts

1/4 7.2 520 3.7 520 2.5 500 2.4/1.2 500 0.9 500

1/3 6.4 515 3.3 515 2.7 530 2.6/1.3 530 1.1 530

1/2 10.3 730 4.8 730 3.4 730 3.6/1.8 730 1.3 730

3/4 12.8 1000 6.5 1000 4.1 970 3.8/1.9 970 1.5 970

1 15.2 1210 7.7 1210 4.9 1230 4.8/2.4 1230 1.9 1230

1-1/2 16.8 1690 8.5 1690 6.5 1630 6.2/3.1 1630 2.3 1630

2 - - - - 8.6 2080 7.6/3.8 2080 2.7 2080

➀Permanent split capacitor motors on models PSH130 through PSH340.

➁Split phase motors for 1/4 through 3/4 hp motors. Capacitor start motors are 1 through 2 hp.

➂Whenever 230V/1

φ

or 230V/3

φ

power is used, it is necessary to specify 230V/25V controls. Whenever 460V/3

φ

power is used, it is necessary to specify 230V/25V

controls and in addition, a 460V/230V 75VA step-down transformer (by others) is required. On 230V/3

φ

or 460V/3

φ

systems, the motor starter coil voltage (motor

starter by others) must be 230V. For 200V/3

φ

systems, the motor starter coil voltage (motor starter by others) must be 200V.

➃All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor

manufacturer and Modine. All motors are totally enclosed. Single phase motors have built-in thermal overload protection.

➄575V motor available on blower units only.

Voltage

Heater Parts from ACF Greenhouses

19

CONTROL OPTIONS

Control

Code Service Thermostat Type of

Control System Description No. Voltage Voltage Gas

Single-Stage, Intermittent Pilot Ignition, 100% Shut-off with Continuous Retry — 30 115V 25V natural

Utilizes a single-stage combination gas control and an ignition control (continuous retry). 31 200-208/230V 25V natural

Pilot is automatically lit on call for heat. ➂ 32 460V 25V natural

➂ ➃ 33 575V 25V natural

85 115V 25V propane

86 200-208/230V 25V propane

➂ 93 460v 25V propane

➂ ➃ 94 575v 25V propane

Propeller and Blower Unit Heaters — PSH and BSH Models ➀ ➁ ➂ ➃

Control Operating Sequence

Upon a call for heat from the thermostat, power is supplied to

the time delay relay for the power exhauster motor. The power

exhauster motor will come on in 1 to 25 seconds. In 45 to 90

seconds (from the call for heat) the ignition control will be turned

on. This delay allows for a pre-purge of the unit and the vent.

Sparking will start at the igniter at the same time the first

operator of the combination gas control opens to allow ga to

flow to the pilot burner. The pilot flame should light and be

sensed (proven) in a few seconds. As soon as the pilot flame is

sensed the sparking will stop and the second operator of the

combination gas control will open to allow gas to flow to the

main burner. In 10 to 45 seconds from the time the ignition

control was energized (1 to 2 minutes from the call for heat from

the thermostat) the fan motor will start.

On units with control codes 08 and 09, when the ignition control

is turned on it will attempt to light the pilot flame. If the pilot

flame is not sensed for any reason, the sparking will continue

indefinitely until the pilot flame is sensed or until power is

interrupted to the ignition control. On units with control codes

30, 31, 85 and 86, the sequence is similar, except that when the

ignition control is turned on it will attempt to light the pilot

flame for 70 seconds. If the pilot flame is not sensed for any

reason, the ignition control will wait for a predetermined time

with the combination gas control closed and no sparking.

After the pre-determined time lapses, the cycle will begin

again. The time that lapses between cycles is at

preprogrammed intervals (approximately 6 minutes). This will

continue indefinitely until the pilot flame is sensed or until

power is interrupted to the ignition control.

When the thermostat has been satisfied, power is turned off

to the ignition control (and therefore the combination gas

control), so both the main gas and pilot gas are turned off.

The fan motor will continue to operate for 20 to 60 seconds to

allow the heat exchanger to cool down. Finally, the power

exhauster motor is turned off 1 to 2 minutes after the

thermostat is satisfied. This allows the products of

combustion to be cleared from the unit and the vent. The

system is now ready for another call for heat from the

thermostat.

➀Shaded prices - Standard units in stock; all others 2-3 weeks delivery.

➁Stainless steel burner option - see page 5 for part number and list price.

➂CGA approved 460V and 575V aviailable on blower units only.

➃575V motor available on blower units only.

13 A43 8 0.750 1.9/2.9 0.500 25 A58 13 1.000 1.9/2.9 0.625

14 A44 8 0.750 1.9/2.9 0.625 32 A55 11 1.000 3.4/4.4 0.875

15 A44 9 0.750 1.9/2.9 0.500 57 A46 10 0.750 1.9/2.9 0.500

16 A48 8 1.000 1.9/2.9 0.625 165 A53 13 0.750 1.9/2.9 0.625

18 A49 9 1.000 1.9/2.9 0.625 166 A45 9 0.750 1.9/2.9 0.625

21 A52 13 0.750 1.9/2.9 0.500 167 A47 10 0.750 1.9/2.9 0.625

22 A53 11 1.000 1.9/2.9 0.625 177 A56 11 1.000 3.4/4.4 0.875

23 A56 11 1.000 3.4/4.4 0.625 178 A48 8 1.000 1.9/2.9 0.875

Sheave

Drive

No.

Belt No.

Browning

Blower Sheave Motor

Pitch Dia. Bore Bore

Sheave

Drive

No.

Belt No.

Browning

Blower Sheave Motor

Pitch Dia. Bore

Min/Max

Pitch Dia. Bore

Min/Max

Pitch Dia.

MOTOR DATA

Blower Drive Numbers

Heater Parts from ACF Greenhouses

Mounting 30°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures A and B)

Model PSH 130 PSH 150 PSH 170 PSH 225 PSH 280 PSH 340

X Y Z X Y Z X Y Z X Y Z X Y Z X Y Z

8' 21 44 60 19 39 53 17 37 50 26 53 73 21 43 59 22 46 62

10' 20 43 59 17 38 52 16 35 48 25 53 72 20 42 58 21 56 61

12' 19 42 58 16 37 50 15 34 46 24 52 70 18 41 56 10 43 59

14' 18 41 56 15 35 48 13 32 44 23 50 69 17 39 65 18 42 57

16' 16 38 53 13 32 44 11 28 39 21 49 67 15 37 51 17 40 55

18' 14 36 50 10 28 39 7 20 29 20 47 64 14 34 47 15 37 52

20' 21 31 44 8 23 33 — 18 44 61 11 29 41 13 33 47

22' 8 24 35 — — 16 41 58 8 23 34 8 24 36

Mounting 60°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures A and B)

Model PSH 130 PSH 150 PSH 170 PSH 225 PSH 280 PSH 340

X Y Z X Y Z X Y Z X Y Z X Y Z X Y Z

8' 0 47 65 0 42 57 0 39 54 0 57 78 0 46 63 0 49 66

10' 0 46 63 0 40 55 0 37 50 0 56 76 0 44 61 0 47 64

12' 0 44 60 0 38 52 0 34 47 0 54 74 0 43 58 0 45 62

14' 0 42 57 0 35 48 0 31 43 0 52 72 0 40 55 0 43 59

16' 0 39 53 0 31 43 0 27 37 0 50 69 0 37 51 0 40 55

18' 0 35 48 0 25 35 0 17 23 0 47 65 0 33 45 0 36 50

20' 0 29 40 0 19 27 — 0 44 60 0 26 36 0 31 43

22' 0 16 23 — — 0 39 54 0 19 26 0 21 29

Mounting 90°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures C and D)

Model PSH 130 PSH 150 PSH 170 PSH 225 PSH 280 PSH 340

SSSSSS

8' 56 50 46 77 59 65

10' 50 45 41 69 53 59

12' 46 41 37 63 48 53

14' 43 38 35 58 45 50

16' 40 35 32 54 42 46

18' 38 33 31 51 40 44

20' 36 32 29 49 38 42

22' 34 30 28 46 36 40

24' 45 34 38

30°, 60° and 90° Downward Deflector Hoods - Propeller PSH Models

➀Data based on units fired at full input rate and with an entering air temperature of 80° F.

30° and 60° Deflector Hoods — Propeller and Blower Models

Figure A

30° Hood 60° Hood

Figure B — Throw/Floor Coverage

Note:

O-X = Feet from heater to start of floor coverage.

O-Y = Feet to end of floor coverage.

O-Z = Feet to end of throw.

MOUNTING

HEIGHT

XY

Y

Z

Z

X

60 NOZZLE

30 NOZZLE

60

30

30 DOWNTURN NOZZLE

60 DOWNTURN NOZZLE

20

PERFORMANCE DATA

Heater Parts from ACF Greenhouses

PERFORMANCE DATA

90° Downward Deflector Hood — Propeller and Blower Models

Figure C

90° Hood

Figure D

H

S

S

21

30°, 60° and 90° Downward Deflector Hoods - Propeller BSH Models

Mounting 30°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures A and B)

Model BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

X Y Z X Y Z X Y Z X Y Z X Y Z X Y Z

8' 11 25 34 9 22 30 11 25 35 14 31 43 16 35 48 17 37 50

10' 9 22 31 8 19 26 10 23 32 13 30 41 15 34 44 15 34 48

12' 7 19 26 6 16 23 8 20 28 12 28 38 14 32 44 15 34 46

14' 5 15 21 4 13 19 6 16 23 10 24 34 12 29 41 13 23 44

16' — — — 8 22 31 10 25 36 11 28 40

18' — — — 6 18 26 8 22 31 10 26 36

20' — — — — — 7 20 29

Mounting 60°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures A and B)

Model BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

X Y Z X Y Z X Y Z X Y Z X Y Z X Y Z

8' 0 25 35 0 22 30 0 26 36 0 33 45 0 37 50 0 39 53

10' 0 22 30 0 18 25 0 23 32 0 31 42 0 35 48 0 37 51

12' 0 17 23 0 9 13 0 18 25 0 27 38 0 32 44 0 35 47

14' 0 10 14 — 0 13 19 0 23 32 0 29 40 0 31 43

16' — — — 0 12 17 0 23 32 0 27 37

18' — — — — 0 18 26 0 17 24

20' — — — — 0 13 19 0 14 19

Mounting 90°

Height to Downward

Bottom Deflector

of Heater Hood Propeller Models➀ (See Figures C and D)

Model BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

SSSSSS

8' 26 23 28 32 35 37

10' 25 22 27 31 34 36

12' 24 21 26 30 33 35

14' 23 20 25 29 32 34

16' 22 19 24 28 31 33

18' 21 18 23 27 30 32

20' 20 — 22 26 29 31

22' — — 21 25 28 30

24' — — — 24 27 29

26 — — — — 26 28

28' — — — — 26 27

➀Data based on units fired at full input rate and with an entering air temperature of 80° F.

Heater Parts from ACF Greenhouses

22

PERFORMANCE DATA

H

T

S

Nozzles - Performance

A choice of four air discharge

nozzles accommodate various

heat throw patterns illustrated.

Equipped with adjustable louver

blades, nozzles are fabricated

from galvanized steel and are

offered either unpainted or

painted to match the finish of the

blower unit heaters. Nozzles are

flanged for easy attachment over

the air discharge opening of the

blower unit heater.

H

SS

H

T

S

T

S

S

H

40° Downward Nozzle

40° Splitter Nozzle

90° Vertical Nozzle

5-Way Nozzle

Nozzle Performance Mounting Height, Heat Throw, Heat Spread (in feet)

Nozzle Model Number

Type BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

40° ✝Max. Mounting Ht. (ft.) 20 21 24 24 26 28

Downward Heat Throw (ft.) 58 62 71 71 79 83

Nozzle Heat Spread (ft.) 20 21 24 24 26 28

90° ✝Max. Mounting Ht. (ft.) 20 18 21 24 26 27

Vertical Nozzle Heat Spread (ft.) 20 18 21 24 26 27

40° ✝Max. Mounting Ht. (ft.) 18 18 20 21 25 28

Splitter Heat Throw (ft.) 45 45 51 53 62 69

Nozzle Heat Spread (ft.) 90 90 102 106 123 137

5-Way ✝Max. Mounting Ht. (ft.) 16 16 18 20 19 23

Nozzle Heat Spread (ft.) 22 22 25 27 26 31

The above table is based on an inlet air temperature of 70°F and an air temperature rise of 55°F. Air deflectors on 40° and 90° discharge nozzles set perpendicular to the

face of the air discharge opening. On 5-way nozzles, bottom air deflectors set perpendicular to floor, all other deflectors at 30° to floor. Static pressure measured at 0.1 W.

C. for 90° nozzle 0.2 W. C. for 40° downward and 5-way nozzle and 0.3 W. C. for 40° splitter nozzle. Outlet velocities are approximately 1850 fpm for the 40° nozzle, 900

fpm for the 90° nozzle and 900 fpm for 5-way nozzle. For motor size, drive and blower rpm refer to pages 10 and 11. Mounting Height measured from bottom of unit.

Heater Parts from ACF Greenhouses

23

DIMENSIONAL DATA

40° Downward Nozzle 40° Splitter Nozzle

40° Vertical Nozzle 5-Way Nozzle

Dimensions (in feet)

Nozzle Dimension Model Number

Type Symbol BSH 130 BSH 150 BSH 170 BSH 225 BSH 280 BSH 340

A 21-1/16 23-3/16 23-3/16 26-3/16 31-1/8 37-1/2

B 20 24 24 24 24 24

C 25 30 30 30 36 36

D 4 4 4 6 11 11

A 21-1/16 23-3/16 23-3/16 26-3/16 31-1/8 37-1/2

B 20 24 24 24 24 24

C 23 29 29 30 34 34

D 8 10 10 10 14 14

A 21-1/16 23-3/16 23-3/16 26-3/16 31-1/8 37-1/2

B 20 24 24 24 24 24

C 33-1/2 39 39 40 46 47

D 11 12 12 14 19 20-1/2

A 21 23-3/16 23-3/16 26-3/16 31-1/8 37-1/2

B 20 24 24 24 24 24

C 27 29 29 32 37 43-1/2

D 14 15 15 16 18 18

40°

Downward

Nozzle

90°

Vertical

Nozzle

40°

Splitter

Nozzle

5-Way

Nozzle

B

C

D

A

/4"

3

B

/4"

3

C

D

B

A

/4"

3

C

D

A

C

B

/4"

3

D

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS — SAFETY DEVICES

Figure 13

Rear View Propeller Type Unit

Limit Control (Overheat Switch)

The limit control, mounted on the left inner side panel (when

facing front of unit), will shut off the gas supply to the main

burner in the event of overheating. It is a single pole single

throw switch. The contacts open to shut the combination gas

control off in the event the unit should overheat. This limit

control should operate only when something is seriously wrong

with the unit. Anytime this control operates, correct the difficulty

immediately or serious damage may result. If the limit control

cuts off the gas supply during normal operation:

1. See that front louvers are open and that there are not any

obstructions in the air inlet or outlet.

2. Check actual input to unit against rated input.

3. Check to be sure fan motor is operating.

4. On propeller unit check that fan is not loose on motor shaft.

On blower unit check belt and sheave for tightness or

damage.

5. On propeller units check fan speed against speed on motor

nameplate. On blower units check blower speed against

Performance Tables on pages 14 and 15; check for

restrictions in ducts and for dirty filters.

6. Check to make sur the venting system and combustion air

piping is not damaged or blocked. Also check to be sure

unit is venting normally.

7. Clean heat exchanger tubes inside and out if necessary.

8. If items 1-7 do not solve the problem, check limit control

and replace if necessary. The control is accessible by

removing the left outer side panel, held in place by screws

at the rear of the unit.

24

PRESSURE SWITCH

SENSING TUBES

PRESSURE

SWITCH

JUNCTION BOX TERMINAL

BOARD

SIDE PANEL

MOUNTING

SCREWS

GAS SUPPLY

CONNECTION

ACCESS PANEL

SIGHT GLASS

FAN

MOTOR

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS — GENERAL

TROUBLESHOOTING GUIDE

Only people trained and familiar with the operation of unit

heaters and their controls should service this unit.

General Maintenance

1. Service air moving components annually.

a. On propeller units this includes checking motor for

lubrication if motor is not there permanently lubricated

type and check fan for fit on motor shaft and for

damage to blades.

b. On blower units this should include:

(1) checking motor and blower bearings for lubrication

(2) checking belt and sheaves for proper alignment and

adjustment

(3) checking cleanliness of blower wheel and filters

2. Keep unit free from dust, dirt, grease and foreign matter,

paying particular attention to:

a. Combustion air inlet terminal.

b. Main burner ports, pilot burner, an main burner orifices

(avoid use of hard, sharp instruments capable of

damaging surfaces, for cleaning these ports). If air

pressure is available, use air hose to blow dirt and

other foreign matter from within the burner. Also main

burner orifices should be checked for blockage due to

spider webs, etc.

c. Primary air shutters (when used).

d. Clean heat exchanger tubes from bottom with stiff

brush after removing burner. (Do not use wire brush.)

e. Fan blades.

To Remove Main Burner

1. Turn off electricity and gas to unit.

2. Remove access panel (see Figure 13).

3. Remove all fastening screws holding hinged bottom pan in

place and lower bottom pan (see Figure 2).

4. Disconnect pilot tubing and ignition cable from the

combination gas control and ignition control.

5. Remove the two burner retaining pins holding the burner in

place. The burner can then be easily lowered from the unit.

In replacing the burner, be certain that the slots at the front

of the burner are located properly on their shoulder rivets

and that the burner retaining pins are put back into their

proper locations.

Replace bottom pan and access panel, making sure a good

tight seal is achieved along he entire perimeter of both

panels.

Figure 14

Manifold Adjustment

Combustion Diagnosis

To realize full gas heating value requires periodic inspections

with proper combustion control corrections as outlined and

illustrated here.

1. Lifting Flames. Lifting flames rise unevenly above the

burner port and may occur on few or all the ports.

Sometimes the flames drop and lift intermittently. Lifting can

be eliminated by reducing primary air. If flame cannot be

adjusted properly, check input rate to heater and manifold

gas pressure; reduce if necessary. Check the main burner

orifice size with those listed in Table 5 to be sure the unit is

not operating over rated input.

Figure 15

Air Shutter Adjustment, Propane Gas

Figure 16

Lifting Flame Condition

25

MIXER

TUBES

PRIMARY

AIR SHUTTER

MAIN

BURNER ORIFICE

MANIFOLD

COMBUSTION

AIR INLET COLLAR

PILOT

TUBE

MANIFOLD

PILOT AND

IGNITOR

ASSEMBLY

HINGED BOTTOM PAN

MAIN BURNER

ORIFICE

MIXER

TUBES MANIFOLD

MOUNTING

SCREW

IGNITION

CABLE

IGNITION CONTROL

Heater Parts from ACF Greenhouses

26

TROUBLESHOOTING GUIDE

2. Yellow Tipping. Yellow tipping of a normally blue flame is

caused by insufficient primary air, and indicates incomplete

combustion producing carbon monoxide ethylene, aldehyde,

and fee carbon (soot). A dirty orifice or one that is out of

line, can also reduce primary air and cause yellow tipping.

Check main burner orifices, clean, realign, or replace if

necessary. With propane gas, some yellow tipping is always

present, but is not objectionable.

3. Flashback. Flashback occurs when air-gas mixture ignites

inside the mixer tube to burn near the orifice. Flashback on

ignition or during burner operation usually can be eliminated

by reducing primary air. The burner may also be operating

below its rated capacity. Check input rate and adjust to

correct value by increasing orifice size or manifold gas

pressure.

Figure 17

Wavering Flame or Misalignment

4. Wavering Flames. Drafts across burners may cause flames

to appear unstable. Wavering flames can lead to incomplete

combustion if flames impinge on cool surfaces. Wavering

can be caused by air drafts into the burner compartment or

by misalignment of the burner. Draft-blown flames may

indicate a cracked heat exchanger.

Figure 18

Floating Flame Condition

5. Floating Flames. Floating flames are long — do not have

well-defined cones, roll around in the combustion chamber,

sometimes completely off the main burner ports. Usually an

aldehyde odor is present to indicate incomplete combustion.

If combustion air supply is reduced too far, burner flames

will float. Often the pilot flame goes out. Lack of combustion

air causes burner flames to float. The unit may be overfired

so its flue outlet area may be too small for the increased

firing rate. Check input rate and reduce if necessary. Soot or

dust may be blocking the heat exchanger. Check and clear

any blockage. Adjust primary air to get rid of yellow tipping

that may produce soot to block heat exchanger. Make sure

combustion air piping is not blocked.

Intermittent Pilot Ignition Systems

1. Pilot will not light or stay lit.

GOOD BAD

Possible Cause Possible Remedy

1a. No spark at ignitor. 1a. Check connections. Check for proper

spark gap, cracked or broken

electrode ceramic, blown controller

fuse or brittle, cracked or loose high

tension cable. Check power

exhauster pressure switch. Replace if

defective.

1b. Defective flame 1b. Check mili-amps of sensor. Tighten

sensor or loose loose connections. Replace flame

connections to sensor if necessary.

flame sensor.

1c. Pilot valve electrical 1c. Tighten connections.

connections loose.

1d. Defective pilot valve. 1d. Replace.

1e. Poor ground 1e. Check grounding means.

connections.

1f. No power from 1f. Check transformer voltage on

control transformer. secondary side for 25v.

1g. Spark not located in 1g. Correct or replace pilot.

pilot gas stream.

1h. Dirty or plugged 1h. Clean or replace.

pilot orifice.

1i. Pilot line kinked 1i. Correct or replace pilot line.

or obstructed.

1j. Pilot flame too low. 1j. Check pilot flame and adjust per

manufacturer’s recommendations.

1k. Flame sensor out 1k. Reposition.

of position.

1l. Defective ignition 1l. Replace.

controller.

CAUTION

Do not attempt to reuse an ignition control which has been

Replace defective control.

Heater Parts from ACF Greenhouses

TROUBLESHOOTING GUIDE

Possible Cause Possible Remedy

2a. Gas valve in off 2a. Turn to on position.

off position.

2b. System in lock-out 2b. Reset system.

mode.

2c. Cracked or broken 2c. Replace sensor.

sensor ceramic.

2d. Defective or loose 2d. Correct or replace.

connections to flame

sensor or flame

sensor lead.

2e. Incorrect gas 2e. Check and adjust if necessary to

pressure. manufacturer’s recommendations

and replace if necessary.

2f. Insufficient current 2f. Check current according to

signal from flame manufacturer’s recommendations

sensor. and replace if necessary.

2g. Incorrect or loose 2g. Check wiring.

wiring.

2h. Poor ground to 2h. Check grounding means.

ignition control.

2i. No power to ignition 2i. Check voltage to controller and gas

controller or gas valve.

valve.

2j. Loose limit control 2j. Check connections.

connections or Replace limit control if necessary.

defective unit.

2k. Defective or plugged 2k. Inspect gas valve regulator.

gas valve regulator. Replace if necessary.

2l. Defective thermostat 2l. Calibrate thermostat or replace if

or thermostat out necessary.

of calibration.

2m. Thermostat heat 2m. Check anticipator setting and correct

anticipator if necessary.

incorrectly set.

2n. Defective ignition 2n. Replace.

controller.

Possible Cause Possible Remedy

3a. Flame sensing 3a. Check flame sensing rod, sensor

circuit failure. ceramic, sensor lead and

connections for damage or loss of

continuity. Replace defective

elements.

3b. Soot on sensing rod. 3b. Clean off soot and adjust pilot to

smaller size.

3c. Blockage in heat 3c. Clean heat exchanger.

exchanger. Determine cause and correct.

3d. Blockage in main 3d. Clean or replace orifice.

burner orifice.

Possible Cause Possible Remedy

4a. Faulty thermostat 4a. Check thermostat and anticipator

or improper heat setting. Replace if defective.

anticipator setting.

4b. Defective ignition 4b. Replace.

controller.

4c. Defective gas control. 4c. Replace.

27

2. Pilot lights, main burner will not light. 3. Burner shuts down before thermostat is satisfied.

4. Burner fails to shut off after thermostat is satisfied.

For Service . . .

If a qualified service person cannot solve the problem, consult

your local gas company or local Modine representative.

When servicing, repairing or replacing parts on these units

always give the complete Model Number (which includes power

code/control code) and Serial Number from the unit rating plate.

RATING PLATE IDENTIFICATION

When servicing, repairing or replacing parts on these units

always give the complete Model Number, Power Code Number,

Control Code Number and Serial Number from the unit rating

plate. The sample below shows what these numbers mean.

P - Propeller Unit

B - Blower Unit

S - Separated

Combustion

H - High Efficiency

F - Unit equipped with

intermittent pilot ignition

V - Unit equipped with

intermittent pilot ignition

and concentric vent

compatible.

MBH Input

150 - 150,000 Btu/hr input

170 - 170,000 Btu/hr input

225 - 225,000 Btu/hr input

etc.

Heat Exchanger Type

A - Aluminized

S - Stainless Steel

Control Code Type

30 - 115v/25v intermittent

pilot ignition, 100%

Shut-Off with continuous

retry, natural gas

31 - 230v/25v intermittent

pilot ignition, 100%

Shut-Off with continuous

retry, natural gas

etc.

Power Code

01 - 115v/60Hz/1φ

02 - 230v/60Hz/1φ

etc.

PS H 2 8 0 A V 0 1 3 0

MODEL NUMBER DESIGNATIONS

Motor Vendor Code

01 - Century

05 - Universal

etc.

Fan or Blower

Vendor Code

01 - Revcor

08 - Brookside

etc.

Series Identity Number

Identifies which series of controls

were furnished on the unit.

Sequence

Number

Year of Manufacture

96 - 1996

97 - 1997

etc.

Week of Manufacture

01 - 1st week of year

26 - 26th week of year

etc.

01 0 1 2 0 1 0 1 9 7 1 0 0 0

SERIAL NUMBER DESIGNATIONS

RATING PLATE

Power Code Control Code

SERIAL NUMBER MODEL NUMBER

01122010195 PSH280AF 01 30

Heater Parts from ACF Greenhouses

© Modine Manufacturing Company 2002 11/02 - 1M Litho in USA

Commercial HVAC&R Division

Modine Manufacturing Company

1221 Magnolia Avenue

Buena Vista, VA 24416

Phone: 1.800.828.4328 (HEAT)

FAX: 1.540.261.1903 (Service & Parts)

www.modine.com

Seller warrants its products to be free from defects in material and workmanship,

EXCLUSIVE, HOWEVER, of failures attributable to the use of materials substituted

under emergency conditions for materials normally employed. This warranty covers

replacement of any parts furnished from the factory of Seller, but does not cover

labor of any kind and materials not furnished by Seller, or any charges for any

such labor or materials, whether such labor, materials or charges thereon are due

to replacement of parts, adjustments, repairs, or any other work done. This

warranty does not apply to any equipment which shall have been repaired or

altered outside the factory of Seller in any way so as, in the judgment of Seller, to

affect its stability, nor which has been subjected to misuse, negligence, or

operating conditions in excess of those for which such equipment was designed.

This warranty does not cover the effects of physical or chemical properties of water

or steam or other liquids or gases used in the equipment.

BUYER AGREES THAT SELLER’S WARRANTY OF ITS PRODUCTS TO BE

FREE FROM DEFECT IN MATERIAL AND WORKMANSHIP, AS LIMITED

HEREIN, SHALL BE IN LIEU OF AND EXCLUSIVE OF ALL OTHER

WARRANTIES, EITHER EXPRESS OR IMPLIED, WHETHER ARISING FROM

LAW, COURSE OF DEALING, USAGE OF TRADE, OR OTHERWISE, THERE

ARE NO OTHER WARRANTIES, INCLUDING WARRANTY OF

MERCHANTABILITY OR FITNESS FOR PURPOSE, WHICH EXTEND BEYOND

THE PRODUCT DESCRIPTION CONFIRMED BY BUYER AND SELLER AS OF

THE DATE OF FINAL AGREEMENT.

This warranty is void if the input to the product exceeds the rated input as indicated

on the product serial plate by more than 5% on gas-fired and oil-fired units, or if

the product in the judgment of SELLER has been installed in a corrosive

atmosphere, or subjected to corrosive fluids or gases, been subjected to misuse,

negligence, accident, excessive thermal shock, excessive humidity, physical

damage, impact, abrasion, unauthorized alterations, or operation contrary to

SELLER’S printed instructions, or if the serial number has been altered, defaced or

removed.

Heat Exchangers

For Seller’s non-separated combustion Gas-Fired Unit Heaters

BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER

WHICH SHALL, WITHIN TEN YEARS FROM DATE OF FIRST BENEFICIAL

USE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS FROM DATE

OF RESALE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS FROM

DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR

WITHIN ONE HUNDRED TWENTY-SIX MONTHS FROM DATE OF

SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST, BE RETURNED

TO SELLER WITH TRANSPORTATION CHARGES PREPAID AND WHICH

THE EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN

DEFECTIVE; EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY

BUYER AS A COMPONENT PART OF EQUIPMENT MANUFACTURED BY

BUYER, BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL

BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER.

FOR GAS-FIRED PRODUCTS INSTALLED IN HIGH HUMIDITY

APPLICATIONS AND UTILIZING STAINLESS STEEL HEAT EXCHANGERS,

BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE

LIMITED TO TEN YEARS FROM DATE OF SHIPMENT FROM SELLER.

For Seller's Low Intensity Gas-Fired Infrared Heaters

BUYER'S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER

WHICH SHALL, WITHIN FIVE YEARS FROM DATE OF FIRST BENEFICIAL

USE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS FROM DATE

OF RESALE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS

FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION,

OR WITHIN 66 MONTHS FROM DATE OF SHIPMENT FROM SELLER,

WHICHEVER OCCURS FIRST, BE RETURNED TO SELLER WITH

TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION

OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT

WHEN THE PRODUCT IS TO BE USED BY BUYER AS A COMPONENT

PART OF EQUIPMENT MANUFACTURED BY BUYER, BUYER'S REMEDY

FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR

FROM DATE OF SHIPMENT FROM SELLER.

Heat Exchanger (Condensers) for all Seller’s products except non-separated

combustion Gas-Fired Unit Heaters and Infrared Heaters, all Burners except

Infrared Heaters, and Sheet Metal for all Seller's products

BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER

(CONDENSER) OR BURNER WHICH SHALL, WITHIN ONE YEAR FROM

DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER,

WITHIN ONE YEAR FROM DATE OF RESALE BY BUYER IN ANY

UNCHANGED CONDITION, OR WITHIN EIGHTEEN MONTHS FROM DATE

OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST, BE

RETURNED TO SELLER WITH TRANSPORTATION CHARGES PREPAID

AND WHICH THE EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE

BEEN DEFECTIVE; EXCEPT THAT WHEN THE PRODUCT IS TO BE USED

BY BUYER AS A COMPONENT PART OF EQUIPMENT MANUFACTURED

BY BUYER, BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN,

SHALL BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM

SELLER.

Burners

For Seller's Low Intensity Gas-Fired Infrared Heaters

BUYER'S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY BURNER WHICH

SHALL, WITHIN TWO YEARS FROM DATE OF FIRST BENEFICIAL USE BY

BUYER OR ANY OTHER USER, WITHIN TWO YEARS FROM DATE OF

RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN 30

MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER

OCCURS FIRST, BE RETURNED TO SELLER WITH TRANSPORTATION

CHARGES PREPAID AND WHICH THE EXAMINATION OF SELLER SHALL

DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT WHEN THE

PRODUCT IS TO BE USED BY BUYER AS A COMPONENT PART OF

EQUIPMENT MANUFACTURED BY BUYER, BUYER'S REMEDY FOR

BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR FROM

DATE OF SHIPMENT FROM SELLER.

For Seller's High Intensity Gas-Fired Infrared Heaters

BUYER'S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY BURNER WHICH

SHALL, WITHIN TEN YEARS FROM DATE OF FIRST BENEFICIAL USE BY

BUYER OR ANY OTHER USER, WITHIN TEN YEARS FROM DATE OF

RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN 126

MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER

OCCURS FIRST, BE RETURNED TO SELLER WITH TRANSPORTATION

CHARGES PREPAID AND WHICH THE EXAMINATION OF SELLER SHALL

DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT WHEN THE

PRODUCT IS TO BE USED BY BUYER AS A COMPONENT PART OF

EQUIPMENT MANUFACTURED BY BUYER, BUYER'S REMEDY FOR

BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR FROM

DATE OF SHIPMENT FROM SELLER.

All Other Components Excluding Heat Exchanger (Condenser), Burner, and

Sheet Metal

For all Seller's products except Direct-Fired Heaters and High Intensity

Gas-Fired Infrared Heaters

BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR

REPLACEMENT AT THE FACTORY OF SELLER, ANY PART OR PARTS

WHICH SHALL, WITHIN TWO YEARS FROM DATE OF FIRST BENEFICIAL

USE BY BUYER OR ANY OTHER USER, WITHIN TWO YEARS FROM DATE

OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN

THIRTY MONTHS FROM DATE OF SHIPMENT FROM SELLER,

WHICHEVER OCCURS FIRST, BE RETURNED TO SELLER WITH

TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION

OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT

WHEN THE PRODUCT IS TO BE USED BY BUYER AS A COMPONENT

PART OF EQUIPMENT MANUFACTURED BY BUYER, BUYER’S REMEDY

FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR

FROM DATE OF SHIPMENT FROM SELLER.

For Seller's Direct-Fired Heaters and High Intensity Gas-Fired Infrared Heaters

BUYER’S REMEDY FOR BREACH OF WARRANTY EXCLUSIVE OF ALL

OTHER REMEDIES PROVIDED BY LAW IS LIMITED TO REPAIR OR

REPLACEMENT AT THE SELLER’S OPTION ANY PART OR PARTS WHICH

SHALL WITHIN A PERIOD OF ONE YEAR FROM DATE OF FIRST

BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN ONE YEAR

FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION,

OR WITHIN 18 MONTHS FROM DATE OF SHIPMENT FROM SELLER,

WHICHEVER OCCURS FIRST, BE RETURNED TO SELLER WITH

TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION

OF THE SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE.

BUYER AGREES THAT IN NO EVENT WILL SELLER BE LIABLE FOR COSTS

OF PROCESSING, LOST PROFITS, INJURY TO GOODWILL, OR ANY OTHER

CONSEQUENTIAL OR INCIDENTAL DAMAGES OF ANY KIND RESULTING

FROM THE ORDER OR USE OF ITS PRODUCT, WHETHER ARISING FROM

BREACH OF WARRANTY, NONCONFORMITY TO ORDERED SPECIFICATIONS,

DELAY IN DELIVERY, OR ANY LOSS SUSTAINED BY THE BUYER.

Modine Manufacturing Company has a continuous product improvement program;

it reserves the right to change design and specifications without notice.

Heater Parts from ACF Greenhouses