Modine Manufacturing Gas Fired Heaters Bd Users Manual Pd Service

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6-553.3
5H73889A (Rev. D)

April, 2002

INSTALLATION AND SERVICE MANUAL
gas-fired unit heaters
models PD and BD

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.

Contents

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
throroughly before installing or servicing this
equipment.

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.

IMPORTANT
The use of this manual is specifically intended
for a qualified installation and service agency.
A qualified installation and service agency must
perform all installation and service of these
appliances.

Pages

Inspection on arrival ................................................................1
Installation (including venting)..............................................2-8
Operation ...........................................................................9-10
Checking input rate ...............................................................11
Dimensional data .............................................................12-13
Performance data.............................................................12-19
Service instructions – safety devices..............................20-21
Service instructions – general...............................................22
Troubleshooting................................................................22-24
Motor data........................................................................25-26
Model identification ...............................................................26
Control options ......................................................................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.

Inspection on Arrival
1.

2.
3.

Inspect unit upon arrival. In case of damage, report
immediately to transportation company and your local
Modine sales representative.
Check rating plate on unit to verify that power supply meets
available electric power at the point of installation.
Inspect unit received for conformance with description of
product ordered (including specifications where applicable).

THIS MANUAL IS THE PROPERTY OF THE OWNER.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.

Heater Parts from ACF Greenhouses

INSTALLATION
SPECIAL PRECAUTIONS
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS IN THIS
MANUAL MUST BE FOLLOWED TO PROVIDE SAFE, EFFICIENT
AND TROUBLE-FREE OPERATION. IN ADDITION, PARTICULAR
CARE MUST BE EXERCISED REGARDING THE SPECIAL
PRECAUTIONS LISTED BELOW. FAILURE TO PROPERLY
ADDRESS THESE CRITICAL AREAS COULD RESULT IN
PROPERTY DAMAGE OR LOSS, PERSONAL INJURY, OR DEATH.
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 during any pressure
testing of the gas supply piping system.
4. Check gas inlet pressure at unit upstream from the combination gas
control. The inlet pressure should be 6”-7” W.C. on natural gas or
12”-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 vented to the outside atmosphere.
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 heat exchanger failure do not locate ANY gasfired unit in areas where chlorinated, halogenated or acid vapors
are present in the atmosphere.
9. Avoid installing units in extremely drafty locations. Drafts can cause
burner flames to impinge on heat exchangers which shortens life.
Maintain separation between units so discharge from one unit will
not be directed into the inlet of another.
10. Do not locate units in tightly sealed rooms or small compartments
without provision for adequate combustion air and venting.
Combustion air must have access to the confined space through a
minimum of two permanent openings in the enclosure, at least one
near the bottom. They should provide a free area of one square inch
per 1000 BTU per hour input rating of the unit with a minimum of
100 square inches for each opening, whichever is greater.
11. Do not install unit outdoors.

16. Modine unit heaters 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 this range, contact factory for recommendations.
17. Provide clearance for opening hinged bottom for servicing. See
Figure 1. Do not set unit on its bottom.
18. 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.
19. Do not lift unit heater by gas controls, gas manifold, or power
exhauster.
20. Be sure no obstructions block air intake and discharge of unit heater.
21. Do not attach duct work, air filters, or polytubes to any propeller
(PD) model unit heaters.
22. 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 hangar and in accordance with the
requirements of the enforcing authority and/or NFPA No. 409 –
Latest Edition .
23. In garages or other sections of aircraft hangars such as offices and
shops which communicate with areas used for servicing or storage,
keep the bottom of the unit at least 7’ above the floor. In public
garages, the unit must be installed in accordance with the Standard
for Parking Structures NFPA #88A and 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.
24. Consult piping, electrical, and venting instructions in this manual
before final installation.
25. 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.
26. Gas-fired heating equipment which has been improperly vented, or
which experiences a blocked vent condition may have the flue
gases accidentally spilled into the heating space. See page 20 for
specific information about the blocked vent safety switch supplied on
the unit.
27. 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.

Figure 1
Hinged Bottom for Burner Service
*(See Dimension "C", page 12)

12. For all sizes, minimum clearance to combustibles from the bottom is
12" and from the sides 18"; for PD sizes 30-50 from the top is 1"
and from the flue collar 2"; for PD sizes 75-300 from the top is 2"
and from the flue collar is 3"; for PD 350 from the top is 3" and from
the flue collar is 4"; for PD 400 from the top is 4" and from the flue
collar is 5"; and for all BD sizes from the top and flue collar is 6".
13. Allow at least 6” clearance at the sides and 12” clearance at rear (or
6” beyond end of motor at rear of unit, whichever is greater) to
provide ample air for combustion and proper operation of fan.
14. The minimum distance from combustible materials 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, other than fire, may occur to materials above the unit
heater at the temperature described.
15. Do not install units below 7 feet measured from the bottom of the
unit to the floor.

WING SCREWS
THAT SECURE
HINGED
BOTTOM
THIS IS
DIMENSION C,
SEE PAGE 12

2

Heater Parts from ACF Greenhouses

INSTALLATION
In the U.S., the installation of these units must comply with the
“National Fuel Gas Code,” ANSI Z223.1, latest edition (also known
as NFPA 54) and other applicable local building codes.
In Canada, the installation of these units must comply with local
plumbing or waste water codes and other applicable codes and
with the current code CAN/CGA-B149.1, “Installation Code for
Natural Gas Burning Appliances and Equipment” or CAN/CGAB149.2, “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
ANSI Z223.1, 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 and serial
numbers 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

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.
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 air stream from another,
setting up circulatory air movement in the area, but maintain
separation between units so discharge from one unit will not be
directed into the inlet of another. In buildings exposed to prevailing
winds, a large portion of the heated air should be directed along the
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 are
listed in Table 7 on page 18. Alternate mounting heights for units
with deflector hoods or nozzles are shown on pages 14,16 and 17.
The maximum mounting height for any unit is that height 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.
Modine unit heaters 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 this range, contact factory for recommendations.

Combustion Air Requirements
Units installed in tightly sealed buildings or confined spaces should
be provided with two permanent openings, one near the top of the
enclosure and one near the bottom. Each opening should have a
free area of not less than one square inch per 1,000 BTU per hour
of the total input rating of all units in the enclosure, freely
communicating with interior areas having, in turn, adequate
infiltration from the outside.

Unit Suspension
The most common method of hanging Modine gas unit heaters is
to utilize 3/8" threaded rod. On each piece of threaded rod used,
screw a nut a distance of about one inch onto the end of the
threaded rods that will be screwed into the unit heater. Then put a
washer over the end of the threaded rod and screw the threaded
rod into the unit heater weld nuts on the top of the heater at least 5
turns, and no more than 10 turns. Tighten the nut you first installed
onto the threaded rod to prevent it from turning. Drill holes into a
steel channel or angle iron at the same centerline dimensions as
the heater that is being installed. The steel channels or angle iron
pieces need to span and be fastened to appropriate structural
members. Cut the threaded rods to the preferred length, push
them through the holes in the steel channel or angle iron and
secure with washers and lock nuts or lock washers and nuts. A
double nut arrangement can be used here instead of at the unit
heater (a double nut can be used both places but is not necessary).
The entire means of suspension must of course be adequate to
support the weight of the unit (see page 14 and 15 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. Do not install standard unit heaters above the
maximum mounting height shown in Table 7 on page 13, or below
seven feet from the bottom of the unit to the floor.

CAUTION
For all sizes, minimum clearance to combustibles from the
bottom is 12" and from the sides 18"; for PD sizes 30-50 from
the top is 1" and from the flue collar 2"; for PD sizes 75-300
from the top is 2" and from the flue collar is 3"; for PD 350
from the top is 3" and from the flue collar is 4"; for PD 400
from the top is 4" and from the flue collar is 5"; and for all BD
sizes from the top and flue collar is 6".
Allow at least 12" at the rear or 6" beyond the end of the
motor (whichever is greater), to provide ample air for
combustion and for proper operation of fan. Provide clearance
for opening at the hinged bottom for servicing - See Figure 1.
On all propeller units, except the PD 350 and PD 400, two tapped
holes (3/8-16) are located in the top of the unit to receive threaded
rods.
Units with two point suspension, models PD30 through PD300,
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.
PD30 through PD300 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 (Fig. 2). 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.
3

Heater Parts from ACF Greenhouses

INSTALLATION
The PD 350 and PD 400 have four mounting holes. On all
blower units, except the PD 350 and PD 400, two tapped holes
are provided in the top of the unit and two holes in the blower
support bracket. The PD 350 and PD 400 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, 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 (machine screws are 3/8 - 16 x
1.75 UNC-2A THD). The pipe caps can then accommodate 3/4" NPT
pipe for mounting.
NOTE: A vent is the vertical passageway used to convey flue gases
from the unit or the flue collar to the outside atmosphere. A flue collar is
the pipe which connects the unit to a vent or chimney.

Figure 2
Adjustable Mounting Brackets - To Adjust:

1. Remove outer side panels.
2. “Set screws” - loosen and
position bracket where needed
– then tighten set screws.
3. Re-attach outer side panels.

5. Avoid venting through unheated space when possible. When
venting does pass through an unheated space, Modine
recommends the use of Type B double wall vent. If single
wall vent is used, insulate vent runs greater than 5 feet to
minimize condensation. Use insulation that is
noncombustible with a rating of not less than 350°F. Install a
tee fitting at the low point of the vent system to provide a
drip leg with a clean out cap as shown in Figure 3. The drip
leg should be cleaned annually.
6. Keep single wall vent pipe at least 6 inches from
combustible material. For double wall vent pipe, maintain
clearances listed on vent pipe (Category I and II units) (see
page 2, section 12 for allowable reductions). The minimum
distance from combustible material is based on the
combustible material surface not exceeding 160°F.
Clearance from the vent connector, vent, or top of unit may
be required to be greater than the minimum clearance if
heat damage other than fire (such as material distortion or
discoloration) may occur.
7. Where the vent passes through a combustible floor or roof,
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 and where the vent pipe passes
through the floor or 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
the specified clearance to combustibles. Any material used
to close the opening must be noncombustible.

Table 1
ANSI Unit Heater Venting Requirements
Category

CAUTION
Gas Unit Heaters must be vented – do not operate
unvented. A built-in draft hood (diverter) is provided –
additional external draft hoods (diverters) are not required
or permitted. Gas-fired heating equipment that has been
improperly vented or which experiences a blocked vent
condition may have flue gases accidentally spilled into the
heated space. See page 20 for specific information about
the blocked vent safety switch supplied on the unit.
Installation must conform with local building codes or in the
absence of local codes, with Part 7, Venting of Equipment,
of the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) Latest Edition. In Canada installation must be in
accordance with CAN/CGA-B149.1 for natural gas units,
and CAN/CGA-B149.2 for propane units.

Venting Instructions
1. All units with single-stage controls are Category I.
2. All units with two-stage or modulating controls are Category
II. The installation of a Category II unit must conform to the
requirements from Table 1 in addition to those listed below.
3. Select size of vent pipe to fit vent pipe connection at rear of
appliance (see Page 12 and 13, Dimension J). Do not use a
vent pipe smaller than the vent pipe connection on the unit.
Vent pipe should be galvanized steel or other suitable
corrosion-resistant material. Follow the National Fuel Gas
Code for minimum thicknesses of vent material; minimum
thicknesses for flue collars vary depending on pipe
diameter.
4. Limit length of horizontal runs to 75% of vertical height.
Install with a minimum upward slope from unit of 1/4 inch
per foot and suspend securely from overhead structure at
points no greater than 3 feet apart. For best venting, put as
much vertical vent as close to the unit as possible. Fasten
individual lengths of vent together with at least three
corrosion-resistant sheet-metal screws.
4

Description

Venting
Requirements

I

Negative vent pressure
Non-condensing

Follow standard
venting requirements.

II

Negative vent pressure
Condensing

Condensate must be
drained.

Positive vent pressure
Non-condensing

Vent must be gastight.

III

Positive vent pressure
Condensing

Vent must be liquid and
gastight. Condensate
must be drained.

IV

8. Top of vertical vent should extend at least two feet above
the highest point where it passes through a roof and at least
2 feet higher than any portion of a building within a
horizontal distance of 10 feet (see Figure 3).
9. Use a vent terminal to reduce downdrafts and moisture in
vent. A vent terminal that is very open will avoid spillage at
unit’s diverter relief opening and tripping of the blocked vent
safety switch.
10.Check vent system to see that combustion products are
being vented properly. Operate unit for several minutes and
then pass a lighted match around the edge of the diverter
relief opening. If the flame is drawn into the opening, the
vent system is drawing properly. If not, make adjustments to
provide adequate draft (see page 21).
11.A drip leg with cleanout cap is recomended for all vent
systems to reduce the opportunity of damage to unit due to
condensation.
ADDITIONAL VENTING REQUIREMENTS FOR CATEGORY II
UNITS
Vent system must provide for drainage of condensate. At the
low point of the vent system, install a tee fitting with a
connector and attach flexible tubing, minimum 3/8 inch I.D., and
run to a drain. Tee fitting and associated condensate disposal
system must be periodically cleaned.

Heater Parts from ACF Greenhouses

INSTALLATION
ADDITIONAL VENTING REQUIREMENTS FOR VENTING
INTO AN EXISTING MASONRY CHIMNEY OR COMMON
VENT (CATEGORY I and II UNITS ONLY)
1. Do not vent a Category I or II unit into a common vent with
mechanical draft systems operating under positive pressure
(Category III or IV units).
2. When connecting vent to an existing chimney, do not push
vent pipe beyond internal surface of chimney.
3. When venting into a common vent, the area of the common
vent should be equal to or greater than the area of the
largest vent plus 50 percent of the area of all additional
vents.
4. When venting into a common vent, the individual vents
should enter at different levels.

Figure 3
Unit Heater Venting

3.
4.
5.
6.
7.
8.
9.
10.
11.

10' MIN.
TO WALL OR ADJOINING BUILDING

APPROVED
TERMINAL

12.
13.

2' *
MIN.
ROOF FLASHING

14.
USE THIMBLE
THROUGH CEILING

1/4"

UNIT

1'0"
SLOPE 1/4" TO
THE FOOT

DRIP LEG WITH
CLEANOUT CAP

15.

After threading and reaming the ends, inspect piping and
remove loose dirt and chips.
Support piping so that no strains are imposed on unit or
controls.
Use two wrenches when connecting piping to unit controls.
Provide a sediment trap before each unit and in the line
where low spots cannot be avoided. (See Figure 4).
Take-off to unit should come from top or side of main to
avoid trapping condensate.
Piping, subject to wide temperature variations, should be
insulated.
Pitch piping up toward unit at least 1/4” per 15’ of horizontal
run.
Compounds used on threaded joints of gas piping must be
resistant to action of liquefied petroleum gases.
Purge air before lighting unit by disconnecting pilot tubing
at combination gas control. In no case should line be
purged into heat exchanger.
After installation, check system for gas leaks, using a soap
solution.
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 4).
Allow at least 5 feet of piping between any pressure
regulator and unit control string.
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.

*SIZE ACCORDING TO EXPECTED SNOW DEPTH.

Table 2
Specific Gravity Conversion Factors

Piping

Multiplying factors to be used with Table 3 cubic ft./hr. values when the specific
gravity of gas is other than 0.60.

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
during any pressure testing of the gas supply piping system.
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. Do not use flexible connectors.
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 4, 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 3. 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 3
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 2.

NATURAL GAS
Specific
Gravity
Factor
0.55
1.04
0.60
1.00
0.65
0.962

PROPANE GAS
Specific
Gravity
Factor
1.50
0.633
1.53
0.626
1.60
0.612

Figure 4
Recommended Piping to Controls
GAS
SUPPLY LINE

GAS
SUPPLY LINE

MANUAL GROUND
SHUT-OFF JOINT
UNION
VALVE

TO
CONTROLS
PLUGGED
1/8" NPT TEST
GAGE CONNECTION

3"
MIN.

SEDIMENT
TRAP

5

Heater Parts from ACF Greenhouses

INSTALLATION
Table 3
Gas Pipe Capacities
In Cu. Ft. per Hour with Pressure Drop pf 0.3 in. W.C. with Specific Gravity 0.60.

Length of
Pipe in Ft.
15
30
45
60
75
90
105
120
150
180
210
240
270
300
450
600

Diameter of Pipe - Inches
1/2

3/4

1

1 1/4

1 1/2

2

3

4

6

8

76
73
44
50

218
152
124
105
97
88
80

440
285
260
190
200
160
168
158
120
128

750
590
435
400
345
320
285
270
242
225
205
190
178
170
140
119

1220
890
700
610
545
490
450
420
380
350
320
300
285
270
226
192

2480
1650
1475
1150
1120
930
920
860
710
720
660
620
580
545
450
380

6500
4700
3900
3250
3000
2600
2450
2300
2000
1950
1780
1680
1580
1490
1230
1030

13880
9700
7900
6800
6000
5400
5100
4800
4100
4000
3700
3490
3250
3000
2500
2130

38700
27370
23350
19330
17310
15800
14620
13680
12240
11160
10330
9600
9000
8500
7000
6000

79000
55850
45600
39500
35300
32250
29850
27920
25000
22800
21100
19740
18610
17660
14420
12480

Wiring

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).
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.
The power to these unit heaters should be protected with a
circuit breaker. Units for use with single-phase electric power,
should be provided with a manual motor starter, having
properly sized overload protection. Units for use with threephase 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 (BD UNITS)

CAUTION
Proper air flow and distribution, across the heat exchanger
must be provided to prevent early failure of the blower unit
heater.

Attachment of Field Installed Ductwork, Blower
(BD) Models Only
Burned-out heat exchanger as well as shorter equipment life
will result from not providing uniform air distribution.
When installing heater always follow good duct design practices

CAUTION
Do not attempt to attach ductwork of any kind to propeller PD
models.
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 heater. These openings should
be large enough to view smoke or reflect light inside the
casing to indicate leaks in the heat exchanger and to check
for hot spots on exchanger due to poor air distribution or
lack of sufficient air.
3. If ductwork is connected to the rear of the unit use Modine
blower enclosure kit or if using field designed enclosure
maintain dimensions of blower enclosure as shown on page 13.

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.

6

Heater Parts from ACF Greenhouses

INSTALLATION
Recommended Installations

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

A

C

B
3" MAX.

TURNING
VANES
3" MIN.

12"
MIN.
3" MIN.

B

B

12"
MIN.

12"
A

3" MAX.

B

12" MIN.

A

A

TURNING
VANES
BAFFLE

TOP VIEW

SIDE VIEW

SIDE VIEW

D

E

F

12"
MIN.

12"
MIN.

B

B

A

BAFFLE

TURNING
VANES

A

TURNING
VANES

BAFFLE

SIDE VIEW

SIDE VIEW

Installation of Blower Models (BD UNITS)
Determining Blower Speed
The drive assembly and motor on all gas-fired blower unit
heaters are factory assembled. The adjustable motor sheave
has been pre-set to permit operation of this unit under average
conditions of air flow and without any external static pressure.
The motor sheave should be adjusted as required when the
unit is to be operated at other than average air flows and/or
with external static pressures. Adjustment must always be
within the performance range shown on pages 18 and 19 and
the temperature rise range shown on the unit’s rating plate.
To determine the proper blower speed and motor sheave turns
open, the conditions under which the unit is to operate must be
known. 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 to be
delivered. The performance tables for blower models are shown
on pages 18 and 19. As an example, a model BD 350 unit,
operating with no external static pressure, that is, no duct work,
nozzles, etc., and is to deliver an air volume of 6481 cfm (cfm =
cubic feet of air per minute) requires that the unit be supplied
with a 5 hp motor, a C207 drive, and the drive sheave must be
set at 2.5 turns open to achieve a blower speed of 960 rpm
(see performance table for units with or without blower
enclosure, page 18). See "Blower Adjustments" on page 8 for
setting of drive pulley turns open.

TOP VIEW

pressure drop of the nozzles can be found footnoted at the
bottom of page 14. 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 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 BD 350 is to be used with a Modine
supplied blower enclosure and Modine supplied filters attached
to someone else's ductwork. The unit is to move 6481 cfm or
air flow against an external static pressure of 0.2" W.C. Also,
0.2" W.C. must be added for the filter pressure drop for a total
of 0.4" W.C. total pressure drop. Entering the performance table
on page 18 for a BD 350, at 6481 cfm and 0.4" W.C. static
pressure, it is seen that the unit will require a 5 hp motor using
a C207 drive, and the motor sheave should be set at .5 turns
open to achieve a blower speed of 1050 rpm. You can see this
example differs from similar conditions in paragraph 2 by the
number of turns open and a higher rpm, which is needed to
overcome the added external static pressure from the filters.

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 the performance data on page 19. If
Modine supplied discharge nozzles are used, the expected
7

Heater Parts from ACF Greenhouses

INSTALLATION
To Install (Figure 5)
1. Remove and discard the motor tie down strap and the
shipping block beneath the belt tension adjusting screw
(Not used on all models.)

Figure 5
Blower Model
THREADED ROD MOUNTING
BRACKETS ON BLOWER ASSEMBLY
MOTOR
MOUNTING
BRACKET

BLOWER
SHEAVE

MOTOR
ADJUSTMENT
SCREW
BLOWER
HOUSING

MOTOR SHEAVE

2. Adjust motor adjusting screw for a belt deflection of
approximately 3/4" with five pounds of force applied midway
between the sheaves (refer to Figure 6a). 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 SAE 20 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 installers responsibility to adjust the motor sheave
to provide the specified blower performance as listed on
pages 18 & 19 for blower settings different from the factory
set performance. The drive number on the unit may be
identified by referring to the Power Code number on the
serial plate of the unit (see page 26 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 26 for drive
sizes.

adjustable motor sheave is supplied with these units. If blower
fan speed changes are required, adjust motor sheave as
follows:
NOTE: Do not fire unit until blower adjustment has been made
or unit may cycle on limit (overheat) control.
1. Shut-off power before making blower speed adjustments.
Refer to Determining Blower Speed on page 7 and to
Performance Date on pages 18 and 19 to determine
proper blower RPM.
2. Loosen belt and take belt off of motor sheave.
3. Loosen set screw on outer side of adjustable motor sheave
(see Figure 6).
4. To reduce the speed of the blower, turn outer side of motor
sheave counterclockwise.
5. To increase the speed of the blower, turn outer side of
motor sheave clockwise.
6. Retighten motor sheave set screw, replace belt and
retighten motor base. Adjust motor adjusting screw such
that there is 3/4” belt deflection when pressed with 5
pounds of force midway between the blower and motor
sheaves (see Figure 6a). Since the belt tension will
decrease dramatically after an initial run-in period, it is
necessary to periodically re-check the tension to assure
continual proper belt adjustment.
7. Check to make certain motor sheave and blower sheave
are aligned. Re-align if necessary.
8. Re-check blower speed after adjustment.
9. Check motor amps. Do not exceed amps shown on motor
nameplate. Slow blower if necessary.
10. Check air temperature rise across unit. Check temperature
rise against values shown in Performance Tables on
pages18 and19 to assure actual desired air flow is being
achieved.
11. If adjustments are required, recheck motor amps after final
blower speed adjustment.

Figure 6
Motor Sheave Adjustment
SET SCREW
TOWARD MOTOR

ADJUSTABLE HALF
OF SHEAVE

Figure 6a
Belt Tension Adjustment

Blower Adjustments
Following electrical connections, check blower rotation to
assure blow-through heating. If necessary interchange wiring to
reverse blower rotation. Start fan motor and check blower
sheave RPM with a hand-held or strobe-type tachometer. RPM
should check out with the speeds listed in Performance Data
shown on pages 18 and 19. A single-speed motor with an

3/4" DEFLECTION
WITH 5# FORCE

8

Heater Parts from ACF Greenhouses

OPERATION

CAUTION

Figure 7
Correct Pilot Flame

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 12"-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.

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 all electric power to the unit.
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)
For Units with Standing Pilot
1. Set thermostat to lowest setting. Move gas control knob (or
lever) to off and wait 5 minutes.
2. Move gas control knob to PILOT (or move gas control lever
to SET) and depress reset button while lighting the pilot and
hold for 1 minute after pilot is lit.
3. Move gas control knob (or lever) to ON.
4. Set thermostat to desired setting.

For Units with Intermittent Pilot
1. Set thermostat to lowest setting. Move gas control knob (or
lever) to off and wait 5 minutes.

Pilot Flame Adjustment
The pilot burner is orificed to burn properly with an inlet
pressure of 6-7" W.C. on natural gas and 12-14" 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 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 condition should be observed
periodically to assure trouble-free operation.

Figure 8
Typical combination gas control
GAS CONTROL KNOB
PRESSURE REGULATOR
ADJUSTMENT SCREW
(UNDER CAP SCREW)
INLET
PRESSURE TAP

OUTLET
PRESSURE
TAP

2. Move gas control knob (or lever) to ON.
3. Set thermostat to desired setting (pilot and main burner will
light automatically when thermostat calls for heat).

OUTLET

INLET

Shut Down Instructions
Turn off power and close manual gas valve.
PILOT TUBING
CONNECTION

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 to assure proper gas flow and
pressure.

RESET BUTTON

PILOT ADJUSTMENT
SCREW

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 after loosening and pushing aside
the blue gas designation disc on rear of unit.
9

Heater Parts from ACF Greenhouses

OPERATION
Lack of primary air will cause soft yellow-tipped flames. Excess
primary air produces short, 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 core.
To increase primary air, loosen the manifold mounting screws
and tap the manifold away from the mixer tubes until yellowtipped flames disappear. See Figure 14. To decrease 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.

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 slightly yellow tip.
Prior to flame adjustment, operate unit heater with casing
closed for at least five minutes. Then lower hinged bottom 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 slightly yellow tip and a clean blue flame with a welldefined inner cone appears.
It may also be necessary to adjust the manifold position in
addition to adjusting air shutters to obtain proper flame. Follow
the instructions under "Natural Gas Flame Control" for adjusting
the manifold.

Checking Input Rate

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 12"-14" W.C. on propane. If inlet
pressure is too high, install an 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.

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 4 for model being tested, locate the combination
gas control and pressure regulator adjustment screw (see
Figure 8). Remove the cap screw from the pressure
regulator and make 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, Buena Vista, Virginia. 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.

(B) Pressure Method
The pressure method determines input by measuring the
pressure of the gas in the manifold in inches of water.

Input Adjustments

1. Determine correct manifold pressure from Table 6.

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
should be checked and necessary adjustments made after the
heater 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.

2. Locate combination gas control.

Input can be determined by the meter-timing method provided
other gas equipment connected to the meter is off during the
test. If this is not possible, use the pressure method.

(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:

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 9) 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 6, 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 6, check inlet pressure at
unit. The inlet pressure should be 6"-7" W.C. pressure on
natural gas and 12"-14" W.C. on propane gas.
After adjustment move gas control knob (or lever) to off and
replace 1/8" pipe plug. With the plug in place, follow the lighting
instructions to put unit back in service.

F1 = 3600 C/T
F2 = F1/C

10

Heater Parts from ACF Greenhouses

CHECKING INPUT RATE

Table 6
Manifold Pressure & Gas Consumption *

Figure 9
Major Gas and Electric Components
FAN MOTOR
FAN
GUARD
PILOT TUBING

Propane
2500
1.53
10.0

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

28.6
–
126
38

12.0
.33
300
52

PD 50
BD 50

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

47.6
–
76
30

20.0
.55
180
45

PD 75
BD 75

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

71.4
–
50
21

30.0
.82
120
39

PD 100
BD 100

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

95.2
–
38
30

40.0
1.15
90
45

PD 125
BD 125

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

119.0
–
30
26

50.0
1.43
72
43

PD 150
BD 150

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

138.1
–
26
21

58.0
1.64
62
39

PD 175
BD 175

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

166.7
–
22
28

70.0
1.86
51
43

PD 200
BD 200

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

190.5
–
19
25

80.0
2.19
45
42

PD 250
BD 250

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

238.1
–
15
18

100.0
2.74
36
36

PD 300
BD 300

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

285.7
–
13
21

120.0
3.29
30
39

PD 350
BD 350

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

333.3
–
11
23

140.0
3.84
26
41

PD 400
BD 400

CFH
Gal/Hr. Propane
Sec/cu. ft.
Orifice Drill Size

381.0
–
9
25

160.0
4.38
23
42

PD 30

COMBINATION
GAS CONTROL

IGNITION
CONTROL
CONTROL
TRANSFORMER

ENTRANCE FOR
COMBUSTION AIR

TERMINAL
BOARD
JUNCTION
BOX

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.)
Time for 1
Revolution,
Sec.

Natural
1050
0.60
3.5

BTU/Cu. Ft.
Model
Specific Gravity
Manifold Pressure In. W.C.

Input, Cu. Ft. per Hour, When Meter Dial Size is:
1/2 cu. ft.

10
12
14
16
18
20
22
24
26
28
30
35
40
45
50
55
60
70
80
90
100
120

180
150
129
112
100
90
82
75
69
64
60
51
45
40
36
33
30
26
22
20
18
15

1 cu. ft.
360
300
257
225
200
180
164
150
138
129
120
103
90
80
72
65
60
51
45
40
36
30

2 cu. ft.

5 cu. ft.

720
600
514
450
400
360
327
300
277
257
240
206
180
160
144
131
120
103
90
80
72
60

1800
1500
1286
1125
1000
900
818
750
692
643
600
514
450
400
360
327
300
257
225
200
180
150

Drill
Size

Dia.
Decimal
Equivalent

18
21
23
25
26
28
30
36

.1695
.1590
.1540
.1495
.1470
.1405
.1285
.1065

Dia.
Decimal
Equivalent

38
39
41
42
43
45
52

.1015
.0995
.0960
.0935
.0890
.0820
.0635

Pilot Burner
Manufacturer

Identity No.
Natural Gas

Identity No.
Propane Gas

Honeywell

BCR-18

BBR-11

Robertshaw

1

①
8
N

Johnson

①

1

1

2

2

2

3

3

3

4

5

6

Figure 10
Dials of Typical Gas Meter

Pilot Orifice Identity Numbers
Drill
Size

1

*Above gases based on average standards. Units can be furnished
for gases of different values and specific gravities. (Gal./Hr. based
on 60°F. 30" Hg., 91,500 BTU/Gal.) In Canada, refer to rating plate
on side of unit for orifices at high altitude.

Table 5
Orifice Drill Sizes with Decimal Equivalents
Main Burner Orifices

No. of
Orifices

7715

①

L
1

O
P

4710

As number appears on top of pilot orifice.

11

Heater Parts from ACF Greenhouses

DIMENSIONS/PERFORMANCE – PD
C

A
H
J VENT PIPE

F

K
X

W

K

G

AA

For clearance to combustibles, see page 3.
B

E

BB
EE
LL
L - Approx

D (OPENING)

MIN. DISTANCE
L
TO WALL IS L + 6"
(MIN. DISTANCE TO WALL)

Dimensions (inches) — PD
Dimension
Symbol
A
B
C
D
E
F
G
H
AA
BB
J①
K (Mounting
Holes) ➂
Gas Connections ➁
W
X
L➃
LL
EE
Fan Diameter
Approx. Weight
①
➁
➂
➃

PD 30
12-7/8
24-1/4
14-3/4
10-7/16
13
9-1/4
2
9-1/4
5
6-1/4
3
3/8-16
1/2
–
–
28-1/4
19-1/2
22-1/4
9
58#

Do not use propeller units with duct work.

PD 50

PD 75

PD 100

PD 125

17-1/4
17-1/4
19-1/4
19-1/4
24-1/4
28-3/4
28-3/4
35-1/4
14-3/4
20
20
22
14-13/16 14-13/16 16-13/16 16-13/16
13
16
16
20
9-1/4
11
11
12
2
2-3/4
2-3/4
3-5/8
13-5/8
13-5/8
15-5/8
15-5/8
5
6-1/4
6-1/4
8
6-1/4
6-1/2
6-1/2
7-1/4
4
5
6
6
3/8-16
3/8-16
3/8-16
3/8-16
1/2
–
–
28-1/4
20-1/8
22-1/4
12
72#

1/2
–
–
36
30
29
12
102#

1/2
–
–
36
30
29
14
116#

1/2
–
–
36-1/2
30
30-1/2
14
152#

Model Number
PD 150 PD 175

PD 200

PD 250

PD 300

PD 350

PD 400

21
35-1/4
22
18-9/16
20
12
3-5/8
17-3/8
8
7-1/4
7
3/8-16

23-1/2
35-1/4
22
21-1/16
20
12
3-5/8
19-7/8
8
7-1/4
7
3/8-16

25-5/8
40-1/4
25
23-3/16
24
13-1/2
4-3/8
22
9
7-1/4
7
3/8-16

25-5/8
40-1/4
25
23-3/16
24
13-1/2
4-3/8
22
9
7-1/4
8
3/8-16

28-5/8
40-1/4
25
26-3/16
24
14
4-3/8
25
9
7-1/4
9
3/8-16

33-5/8
40-1/4
25
31-3/16
24
–
4-1/4
30
9
7-1/4
10
3/8-16

40
40-1/4
25
37-1/2
24
–
4-1/4
36-3/8
9
7-1/4
10
3/8-16

1/2
–
–
37-1/8
31-1/8
30-1/2
16
162#

1/2
–
–
37-1/8
31-1/8
30-1/2
18
169#

1/2
–
–
40-7/8
34-7/8
32-7/8
20
231#

1/2
–
–
41
34-7/8
32-7/8
20
231#

1/2
–
–
42-1/4
36-1/4
32-7/8
22
261#

3/4
5
16
42-1/4
35-1/2
32-7/8
22
330#

3/4
5
16
47-1/4
40-1/2
32-7/8
24
410#

Diameter of round vent pipe to fit oval opening.
For natural gas; may vary depending on control availability.
PD 30 through PD 300 — 2 holes (and the level hanging adjustment feature). PD 350 through PD 400 — 4 holes.
Dimension equals overall plus 6".

Performance — PD

Inputs and outputs are the same for BD as PD

Standard

Model Number
PD 30

PD 50

PD 75

PD 100

PD 125

PD 150

PD 175

PD 200

PD 250

PD 300

PD 350

PD 400

Btu/Hr. Input

30,000

50,000

75,000

100,000

125,000

150,000

175,000

200,000

250,000

300,000

350,000

400,000

Btu/Hr. Output

24,000

40,000

60,000

80,000

100,000

120,000

140,000

160,000

200,000

240,000

280,000

320,000

Entering Airflow CFM

440

740

1100

1460

1850

2180

2550

2870

3700

4460

4870

5440

Outlet Velocity

515

610

736

860

870

931

959

819

1053

1123

1068

1016

Air Temp. Rise °F

51

50

51

51

50

51

51

52

50

50

53

54

Mounting Hgt.
(Max. Ft.) ①

7

9

12

14

14

16

17

15

19

21

20

19

Heat Throw Ft. ①
(Max. Mtg. Hgt.)
Horsepower
Motor
RPM
Data
Type
➁
Unit total
Power (amps)

25

33

41

49

51

55

59

51

67

74

70

69

1/40
1550

1/40
1550

1/12
1550

1/12
1550

1/8
1625

1/8
1625

1/6
1075

1/6
1075

1/3
1075

1/2
1075

3/4
1125

3/4
1125

Shaded
Pole

Shaded
Pole

Shaded
Pole

Shaded
Pole

1.3

1.3

2.5

2.5

Perm.
Perm.
Split Cap. Split Cap.
2.6

2.6

Perm.
Perm.
Perm.
Perm.
Perm.
Perm.
Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap.
3.1

3.1

5.7

7.8

8.3

8.3

Ratings shown are for elevations up to 2,000 ft. 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.)
① At 65°F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods.
➁ All single phase motors are totally enclosed and thermal overload protected. Data listed is for standard 115-volt, 60 hertz, single-phase motors.

12

Heater Parts from ACF Greenhouses

DIMENSIONS/PERFORMANCE – BD
C

A
F

H

N

EE
P

X

W
K

J VENT PIPE

4-5/8''

S
G

AA

O

For clearance to combustibles,
see page 3.
QxV

K
E

B

RxT

BB
BLOWER
ENCLOSURE
(OPTIONAL)

M (APPROX.)

D (OPENING)

FILTER RACK
(OPTIONAL)

L (MIN. DISTANCE TO WALL)

Dimensions (inches) — BD
Dimension
Symbol
A
B
C
D
E
F
G
H
AA
BB
J①
K ➃ Mounting Holes
Gas Connections ➁
W
X
EE
L w/ Blwr Encl & Filt Rk
L w/o Blwr Encl & Filt Rk
M➂
N➄
O
P
Q Blower Encl Ht
V Blower Encl Width
R Inlet Duct Height
T Inlet Duct Width
Center to Center
Blower Mtg. Holes S
Std. Mtr. Sheave Dia. ➅
Std. Blower Sheave Dia.
Blower Wheel Diameter
Approx. Weight
①
➁
➂
➃
➄
➅

Model Number
BD 175
BD 200

BD 50

BD 75

BD 100

BD 125

BD 150

BD 250

BD 300

BD 350

BD 400

17-1/4
24-1/4
14-3/4
14-13/16
13
9-1/4
2
13-5/8
5
6-1/4
4
3/8-16
1/2
–
–
41-3/8
47-5/8
38
32
11-3/4
4-1/2
22
14-1/8
17-1/2
15-3/4
16
10-15/16

17-1/4
28-3/4
20
14-13/16
16
11
2-3/4
13-5/8
6-1/4
6-1/2
5
3/8-16
1/2
–
–
46-5/8
52-5/8
43-1/8
37-1/8
14-7/8
5-3/4
22
17-1/8
17-1/2
15-3/4
16
13-15/16

19-1/4
28-3/4
20
16-13/16
16
11
2-3/4
15-5/8
6-1/4
6-1/2
6
3/8-16
1/2
–
–
49-5/8
55-5/8
45-3/4
39-3/4
17-5/8
5-3/4
25
17-1/8
21-1/4
15-3/4
19-3/4
18-7/16

19-1/4
35-1/4
22
16-13/16
20
12
3-5/8
15-5/8
8
7-1/4
6
3/8-16
1/2
–
–
56-5/8
51-5/8
49-7/8
43-7/8
18-5/8
7-1/2
25
21-3/8
21-1/4
20
19-3/4
18-7/16

21
35-1/4
22
18-9/16
20
12
3-5/8
17-3/8
8
7-1/4
7
3/8-16
1/2
–
–
56-5/8
62-5/8
53-1/8
47-1/8
21-1/2
7-1/4
30
21-3/8
29
20
27-1/2
17-5/16

23-1/2
35-1/4
22
21-1/16
20
12
3-5/8
19-7/8
8
7-1/4
7
3/8-16
1/2
–
–
56-5/8
62-5/8
53-1/8
47-1/8
21-1/2
7-1/4
30
21-3/8
29
20
27-1/2
17-3/8

25-5/8
40-1/4
25
23-3/16
24
13-1/2
4-3/8
22
9
7-1/4
7
3/8-16
1/2
–
–
63-5/8
69-5/8
61
55
25-7/16
8-1/2
34
25-1/8
34-1/4
23-3/4
32-3/4
20-3/8

25-5/8
40-1/4
25
23-3/16
24
13-1/2
4-3/8
22
9
7-1/4
8
3/8-16
1/2
–
–
63-5/8
69-5/8
61
55
25-7/16
8-1/2
34
25-1/8
34-1/4
23-3/4
32-3/4
20-3/8

28-5/8
40-1/4
25
26-3/16
24
14
4-3/8
25
9
7-1/4
9
3/8-16
1/2
–
–
63-5/8
69-5/8
61
55
24-15/16
8-1/2
34
25-1/8
34-1/4
23-3/4
32-3/4
20-3/8

33-5/8
40-1/4
25
31-3/16
24
–
4-1/4
30
9
7-1/4
10
3/8-16
3/4
5
16
63-5/8
69-5/8
61
55
17-15/16
8-1/2
34
25-1/8
44-3/8
23-3/4
42-7/8
20-3/8

40
40-1/4
25
37-1/2
24
–
4-1/4
36-3/8
9
7-1/4
10
3/8-16
3/4
5
16
63-5/8
69-5/8
65
59
22
8-1/2
34
25-1/8
44-3/8
23-3/4
42-7/8
20-3/8

3
8
8
116#

3
10
8
146#

3
8
9
158#

3
7
9
205#

3
11
13
215#

3
7
13
231#

3
14
15
307#

3
10
15
307#

3
7
15
331#

3
6
15
420#

4-1/2
10
15
490#

Diameter of round vent pipe to fit oval opening.
For natural gas; may vary depending on control availability.
This is an approximate dimension for standard motors, allow 3" for sheave and optional motors.
BD 50 thru BD 300 — 4 holes (2 on blower and 2 on unit).
BD350 and BD 400 — 6 holes (2 on blower and 4 on unit).
Distance between mounting hole in unit casing and mounting hole on blower. On the BD 350 and BD 400, the distance is from rear mounting hole in casing to the mounting hole on blower.
Motor pulley is adjustable.

Note: Mounting heights and throws for BD models, without ductwork or nozzles, and at a cfm
yielding a 55° temperature rise are the same as those listed for equivalent size PD units.

Standard Blower Motor Data — BD
Standard

Motor
Data

Horsepower
RPM
Type
Total Unit
Power Amps

Model Number
BD 175
BD 200

BD 50

BD 75

BD 100

BD 125

BD 150

BD 250

BD 300

BD 350

BD 400

1/4
1725
Split
Phase

1/4
1725
Split
Phase

1/4
1725
Split
Phase

1/4
1725
Split
Phase

1/4
1725
Split
Phase

1/3
1725
Split
Phase

1/4
1725
Split
Phase

1/3
1725
Split
Phase

3/4
1725
Split
Phase

1
1725
Cap.
Start

1-1/2
1725
Cap.
Start

5.7

5.7

5.7

5.7

5.7

4.9

5.7

4.9

11.3

13.7

15.6

① Data listed is for standard 115-volt, 60-Hertz, single-phase motors.

13

Heater Parts from ACF Greenhouses

PERFORMANCE DATA – NOZZLES
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.

90° VERTICAL
NOZZLE

H
H

T

S

S

S

40° DOWNWARD
NOZZLE

5-WAY
NOZZLES
T

T

H

S

40° SPLITTER
NOZZLE
S
S

Mounting Height, Heat Throw, Heat Spread (in feet)
Model Number
Nozzle
Type

40°
Downward
Nozzle

90° Vertical
Nozzle

40° Splitter
Nozzle
5-Way
Nozzle

BD 50
Max. Mounting Ht. (ft.) H

BD 75

BD 100 BD 125 BD 150

BD 175 BD 200 BD 250 BD 300 BD 350 BD 400

16

20

21

24

26

25

27

29

31

32

32

Heat Throw (ft.) T

48

61

64

71

79

76

81

86

94

96

96

Heat Spread (ft.) S

16

20

21

24

26

25

27

29

31

32

32

Max. Mounting Ht. (ft.) H

14

22

23

24

26

26

24

29

31

32

32

Heat Spread (ft.) S

14

22

23

24

26

26

24

29

31

32

32

Max. Mounting Ht. (ft.) H

–

–

–

23

24

24

23

25

28

30

32

Heat Throw (ft.) T

–

–

–

56

60

59

59

62

70

75

80

Heat Spread (ft.) S

–

–

–

113

120

118

117

124

140

151

160

Max. Mounting Ht. (ft.) H

–

18

18

23

22

21

20

25

26

23

26

Heat Spread (ft.) S

–

25

26

32

31

29

28

35

36

32

36

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 all air deflectors set perpendicular 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 1750 FPM for the 40° nozzles, 1000 FPM for the 90° nozzle and 1300
FPM for 5-way. For motor size, drive and blower rpm refer to pages 18 and 19. Mounting height measured from bottom of unit.

14

Heater Parts from ACF Greenhouses

DIMENSIONAL DATA
A

A
3

3

/4"

/4"

B

B

D

D

C
C

40°
Downward Nozzles

40°
Splitter Nozzles

A

A
3

/4"

/4"

B
B

D

D

C
C

90°
Downward Nozzles

5-Way
Nozzle

Dimensions (in inches)
Nozzle
Type

40° Downward
Nozzle

90° Vertical
Nozzle
40° Splitter
Nozzle
5-Way
Nozzle

Model Number

Dimension
Symbol

BD 50

BD 75

A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D

14-13/16
13
20
3-1/2
14-13/16
13
15
6
–
–
–
–
14-13/16
13
20-3/4
11

14-13/16
16
24
4
14-13/16
16
15
6
–
–
–
–
14-13/16
16
20-3/4
11

BD 100

BD 125

BD 150

BD 175

BD 200

BD 250

BD 300

BD 350

BD400

16-13/16 16-13/16
16
20
22
26
3
4
16-13/16 16-13/16
16
20
17
22
6
8
–
–
–
–
–
–
–
–
16-13/16 16-13/16
16
20
22-3/4
22-3/4
12
12

18-9/16
20
26
4
18-9/16
20
22
8
18-9/16
20
34
10
18-9/16
20
24-1/2
13

21-1/16
20
25
4
21-1/16
20
23
8
21-1/16
20
33
11
21
20
27
14

23-3/16
24
30
4
23-3/16
24
29
10
23-3/16
24
39
12
23-3/16
24
29
15

23-3/16
24
30
4
23-3/16
24
29
10
23-3/16
24
39
12
23-3/16
24
29
15

26-3/16
24
30
6
26-3/16
24
30
10
26-3/16
24
40
14
26-3/16
24
32
16

31-1/8
24
36
11
31-1/8
24
34
14
31-1/8
24
46
19
31-1/8
24
37
18

37-1/2
24
36
11
37-1/2
24
34
14
37-1/2
24
47
20
37-1/2
24
43-1/2
18

15

Heater Parts from ACF Greenhouses

PERFORMANCE DATA – HOODS FOR PROPELLER MODELS
Performance Data — 30°, 60° and 90° Downward Deflector Hoods
Mounting
Height to
Bottom of
Heater

Models
8'
10'
12'
14'
16'
18'
20'
22'
24'

30° Downward Hood For Propeller Units ➀
PD 50
X Y Z
8 19 26
6 15 22
4 12 17

PD 75
X Y Z
11 25 34
9 23 22
7 20 28
5 14 21

PD 100
X Y Z
14 31 43
13 30 41
11 28 39
10 25 35
5 17 25

Mounting
Height to
Bottom of
Heater

Models
8'
10'
12'
14'
16'
18'
20'
22'
24'

8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'

PD 150
X Y Z
16 36 49
15 34 47
14 33 45
12 30 42
10 27 38
6 20 29

PD 175
X Y Z
18 38 52
17 37 51
15 35 49
14 33 46
12 31 43
9 26 37

PD 200
X Y Z
15 33 45
14 31 43
12 30 41
11 27 37
8 22 31
6 18 26

PD 250
X Y Z
21 44 60
20 43 59
19 42 58
17 40 56
16 38 53
14 36 50
12 32 45
8 24 35

PD 300
X Y Z
24 49 67
23 48 66
21 47 65
20 46 63
19 44 61
17 42 58
15 39 54
13 35 49
8 26 38

PD 350
X Y Z
22 46 63
21 45 62
20 44 61
19 43 59
17 41 56
15 38 53
13 35 49
10 29 42
8 24 36

PD 400
X Y Z
22 45 62
21 44 61
19 43 59
18 42 57
16 40 55
15 37 52
13 33 47
8 25 37
8 24 35

PD 300
X Y Z
0 52 72
0 51 70
0 50 68
0 48 65
0 45 62
0 42 58
0 38 52
0 32 45
0 19 28

PD 350
X Y Z
0 49 68
0 48 66
0 46 64
0 44 61
0 41 57
0 38 52
0 33 46
0 25 35
0 16 24

PD 400
X Y Z
0 48 66
0 47 64
0 45 62
0 43 59
0 40 55
0 36 50
0 31 43
0 21 30
0 16 23

PD 300
S
62
56
51
47
44
42
40
38
36
35
33
32

PD 350
S
58
52
47
44
41
38
36
35
33
32
31
30

PD 400
S
56
50
46
42
39
37
35
34
32
31
30
29

60° Downward Hood For Propeller Units ➀
PD 50
X Y Z
0 19 26
0 14 19

PD 75
X Y Z
0 26 36
0 23 32
0 18 25
0 10 14

PD 100
X Y Z
0 33 45
0 31 42
0 28 38
0 23 33
0 13 19

Mounting
Height to
Bottom of
Heater

Models

PD 125
X Y Z
15 32 44
14 31 43
12 29 40
10 26 37
7 21 30
6 18 26

PD 125
X Y Z
0 34 47
0 32 44
0 29 40
0 25 35
0 18 25
0 12 17

PD 150
X Y Z
0 38 52
0 36 49
0 33 46
0 30 41
0 25 35
0 13 19

PD 175
X Y Z
0 40 55
0 39 53
0 36 50
0 33 46
0 29 41
0 23 32

PD 200
X Y Z
0 35 47
0 33 45
0 30 41
0 26 36
0 19 27
0 12 17

PD 250
X Y Z
0 47 65
0 46 63
0 44 60
0 41 57
0 38 53
0 35 48
0 29 40
0 16 23

90° Downward Hood For Propeller Units ➀
PD 50
S
10
11
12

PD 75
S
23
20
19
17
16

PD 100
S
30
27
24
23
21
20
19

PD 125
S
34
30
27
25
24
22
21

PD 150
S
38
34
31
29
27
25
24
23

PD 175
S
42
37
34
32
29
28
26
25

PD 200
S
36
32
29
27
25
24
23
22

PD 250
S
54
48
44
41
38
36
34
33
31
30
29

➀ Data Based on units fired at full rated input with an entering air temperature of 60°-80°F. Maximum mounting heights higher versus units without outlet devices.

NOTE:
X = FEED FROM HEATER
TO START OF
FLOOR COVERAGE.
Y = FEET TO END OF
FLOOR COVERAGE.
Z = FEET TO END OF
THROW.

THROW-FLOOR COVERAGE

30 DOWNTURN NOZZLE
60 DOWNTURN NOZZLE

30
60

OUNTING
HEIGHT

30° HOOD

60° HOOD
X

60 NOZZLE

X

Y

Z
30 NOZZLE

Y
Z

16

Heater Parts from ACF Greenhouses

PERFORMANCE DATA – HOODS FOR BLOWER MODELS
Performance Data — 30°, 60° and 90° Downward Deflector Hoods
Mounting
Height to
Bottom of
Heater

Models
8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'

30° Downward Hood For Blower Units ➁
BD 50
X Y Z
13 29 40
12 28 38
10 25 35
8 21 30

BD 75
X Y Z
18 38 52
16 37 50
15 35 48
14 33 46
12 30 42
9 25 36

BD 100
X Y Z
22 47 64
21 46 63
20 45 61
19 43 59
17 41 57
16 39 54
14 35 50
11 30 43

Mounting
Height to
Bottom of
Heater

Models
8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'

8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'
36'
38'
40'
42'

➁

BD 150
X Y Z
26 53 72
25 52 71
23 51 70
22 50 68
21 48 66
19 46 64
18 44 61
16 41 57
13 36 51

BD 175
X Y Z
28 56 76
26 55 75
25 54 74
24 53 73
23 52 71
21 50 69
20 48 66
18 45 63
16 42 59

BD 200
X Y Z
24 50 68
23 49 67
22 48 66
21 47 64
19 45 62
18 43 59
16 40 56
14 36 51
10 29 42

BD 250
X Y Z
31 63 86
30 62 85
29 62 84
28 61 83
27 59 81
25 58 80
24 56 77
22 54 75
21 52 72
19 48 68
16 44 62
12 36 52

BD 300
X Y Z
35 69 94
34 69 94
33 68 93
31 67 92
30 66 90
29 65 89
28 63 87
26 62 85
25 59 82
23 57 79
21 54 75
19 50 70

BD 350
X Y Z
37 73 99
36 72 98
34 71 97
33 71 96
32 69 95
31 68 93
30 67 92
28 65 90
27 63 87
25 61 85
23 58 81
21 55 77

BD 400
X Y Z
30 61 84
29 61 83
28 60 82
27 59 80
26 57 79
24 56 77
23 54 75
21 52 72
20 49 69
18 46 64
15 41 58
10 32 47

BD 250
BD 300
X Y Z X Y Z
0 68 93 0 74 102
0 67 91 0 74 101
0 65 90 0 72 99
0 64 88 0 71 97
0 62 85 0 69 95
0 60 82 0 68 93
0 58 79 0 65 90
0 55 75 0 63 86
0 51 70 0 60 82
0 46 64 0 56 78
0 40 56 0 52 72
0 30 43 0 46 65

BD 350
X Y Z
0 78 107
0 77 106
0 76 104
0 75 102
0 73 100
0 72 98
0 70 95
0 67 92
0 64 89
0 61 84
0 57 79
0 53 73

BD 400
X Y Z
0 66 90
0 65 88
0 63 87
0 62 85
0 60 82
0 58 79
0 55 76
0 52 72
0 48 66
0 43 60
0 36 50
0 22 31

BD 350
S
121
108
99
91
85
81
76
73
70
67
65
62
60
59
57
55
54
53

BD 400
S
94
84
77
71
67
63
60
57
55
52
50
49
47
46
45
43
42
41

60° Downward Hood For Blower Units ➁
BD 50
X Y Z
0 31 42
0 28 39
0 25 34
0 19 27
0 11 16

BD 75
X Y Z
0 40 55
0 38 52
0 36 49
0 33 45
0 29 40
0 22 31

BD 100
X Y Z
0 50 68
0 48 66
0 47 64
0 44 61
0 42 57
0 38 53
0 33 46
0 26 36

Mounting
Height to
Bottom of
Heater

Models

BD 125
X Y Z
23 47 64
21 46 63
20 45 62
19 43 60
17 42 57
16 39 54
14 36 50
11 31 44

BD 125
X Y Z
0 50 69
0 49 67
0 47 65
0 45 62
0 42 58
0 39 53
0 34 47
0 27 38
0 16 24

BD 150
X Y Z
0 56 77
0 55 76
0 54 74
0 52 71
0 50 68
0 47 64
0 43 60
0 39 54
0 33 45

BD 175
X Y Z
0 60 82
0 59 81
0 57 79
0 56 76
0 54 74
0 51 70
0 48 66
0 44 61
0 39 54

BD 200
X Y Z
0 53 73
0 52 71
0 50 69
0 48 67
0 46 63
0 43 59
0 39 54
0 34 47
0 24 34

90° Downward Hood For Blower Units ➁
BD 50
S
29
26
24
22
21
19

BD 75
S
42
38
35
32
30
28
27
26
24

BD 100
S
56
50
46
43
40
38
36
34
33
31
30
29

BD 125
S
61
55
50
46
43
41
39
37
35
34
33
32
31

BD 150
S
72
65
59
55
51
48
46
44
42
40
39
37
36
35

BD 175
S
79
70
64
60
56
53
50
48
45
44
42
41
39
38

BD 200
S
70
63
58
53
50
47
45
42
41
39
38
36
35
34

BD 250
S
98
88
80
74
70
66
62
59
57
55
53
51
49
48
46
45
44
43

BD 300
S
113
101
92
85
80
75
71
68
65
63
60
58
56
55
53
52
50
49

Data Based on unit fired at full rated input, 60°-80°F entering air temperature, and a 40°F temperature rise through
unit. Maximum mounting heights higher versus units without outlet devises.

H

90° HOOD

S

S

17

Heater Parts from ACF Greenhouses

PERFORMANCE DATA - BLOWER UNIT HEATERS
Models With or Without Blower Enclosure ➀ ➁ ➂ ➃ ➄
0.0 Static Air Pressure
Temp
Model Rise Airflow
No.
(°F)
(cfm)

RPM

HP

40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70

720
640
575
525
480
445
410
585
520
470
425
390
360
335
795
710
640
580
530
490
455
840
745
670
610
560
520
480
515
455
410
375
345
315
295
805
715
645
585
540
495
460
420
375
335
305
280
260
240
605
535
485
440
405
370
345
825
735
660
600
550
510
470
960
850
765
695
640
590
550
885
800
725
665
615
570

1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1/4
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1/4
3/4
1/2
1/2
1/2
1/3
1/4
1/4
1/4
1/4
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1/4
1-1/2
1
3/4
1/2
1/3
1/3
1/3
1/3
3/4
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1-1/2
1
3/4
1/2
1/2
1/2
1/3
1/3
1/3
3
2
1-1/2
1
3/4
3/4
3/4
3/4
5
3
2
1-1/2
1-1/2
1-1/2
1
1
1
5
3
2
1-1/2
1-1/2
1-1/2
1-1/2

BD
50

BD
75

BD
100

BD
125

BD
150

BD
175

BD
200

BD
250

BD
300

BD
350

BD
400

926
823
741
673
617
570
529
1389
1235
1111
1010
926
855
794
1852
1646
1481
1347
1235
1140
1058
2315
2058
1852
1684
1543
1425
1323
2778
2469
2222
2020
1852
1709
1587
3241
2881
2593
2357
2160
1994
1852
3704
3292
2963
2694
2469
2279
2116
4630
4115
3704
3367
3086
2849
2646
5556
4938
4444
4040
3704
3419
3175
6481
5761
5185
4714
4321
3989
3704
6584
5926
5387
4938
4558
4233

0.1 Static Air Pressure

Sheave
Drive Turns RPM
No.
Open

C183
C183
C182
C182
C182
C182
C182
C186
C185
C184
C184
C184
C184
C184
C92
C90
C90
C90
C200
C200
C200
C200
C200
C199
C211
C211
C211
C188
C188
C188
C188
C96
C191
C191
C191
C191
C191
C191
C193
C192
C192
C192
C96
C95
C95
C95
C16
C101
C212
C212
C212
C212
C212
C212
C105
C205
C205
C205
C204
C204
C204
C203
C203
C203
C111
C108
C106
C205
C205
C205
C205
C207
C111
C210
C105
C105
C105
C107
C107
C107
C207
C111
C210
C105
C105
C105

2
3.5
1
2.5
3.5
4.5
5
2.5
4
1
2
3
4
5
0.5
2.0
3.5
1.0
2.0
3.0
4.0
5.0
3.5
5.0
2.0
3.0
4.0
5.0
4.0
0.0
1.5
2.5
3.5
4.5
5.0
3.5
4.0
5.0
2.5
3.5
4.5
5.0
5.0
5.0
1.0
2.0
3.0
4.0
5.0
4.5
3.5
4.5
2.0
3.0
4.0
4.5
3.0
3.0
5.0
2.5
3.5
4.0
5.0
2.5
2.5
4.5
2.0
3.5
4.5
5.0
4.0
3.5
5.0
2.5
4.0
4.5

800
730
675
630
595
565
545
670
615
575
540
510
490
470
860
780
720
670
625
595
565
890
805
735
680
635
600
570
565
515
475
445
420
400
380
840
755
690
635
590
550
520
465
420
390
365
345
325
310
635
570
520
480
450
420
395
850
760
690
635
590
550
515
980
880
795
730
675
630
590
915
825
760
700
650
610

HP

1/3
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/2
1/2
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1/4
3/4
1/2
1/3
1/4
1/4
1/4
1/4
1
3/4
1/2
1/3
1/3
1/3
1/4
1/4
1/4
3/4
1/2
1/3
1/4
1/4
1/4
1/4
1/4
1-1/2
1
3/4
1/2
1/2
1/2
1/3
1/3
1/3
3/4
1/2
1/2
1/2
1/3
1/4
1/4
1/4
1-1/2
1
3/4
3/4
3/4
1/2
1/2
1/2
1/3
3
2
1-1/2
1-1/2
1
3/4
3/4
3/4
5
3
3
3
2
1-1/2
1
1
1
5
3
3
3
2
1-1/2
1-1/2
1-1/2

For 575V selections, please see chart on page 19.

Sheave
Drive Turns RPM
No. Open

C1
C183
C183
C183
C182
C182
C182
C182
C182
C186
C186
C186
C185
C185
C185
C184
C184
C184
C91
C92
C90
C90
C90
C200
C200
C200
C190
C199
C211
C188
C188
C188
C188
C188
C188
C38
C96
C95
C191
C191
C191
C191
C191
C193
C192
C192
C192
C96
C96
C96
C95
C95
C95
C16
C101
C101
C101
C102
C212
C212
C212
C105
C205
C205
C205
C204
C204
C204
C203
C111
C108
C106
C106
C205
C205
C205
C205
C207
C111
C111
C111
C210
C105
C107
C107
C107
C207
C111
C111
C111
C210
C105
C105
C105

0.4 Static Pressure
0.3 Static Air Pressure
Sheave
Sheave
Sheave
HP
Drive Turns
Drive Turns RPM HP
Drive Turns RPM
No.
Open
No.
Open
No.
Open

0.2 Static Air Pressure

5
2
3
0
0.5
1.5
2
1.0
2.0
3.0
3.5
4.0
0.5
1.0
4.5
1.0
2.0
3.0
0.0
1.0
1.5
4.0
5.0
4.0
0.5
1.5
2.5
3.0
4.5
4.0
5.0
0.5
1.0
2.0
2.5
2.5
3.5
4.5
1.5
2.5
3.5
4.0
4.0
3.5
4.5
5.0
0.5
1.5
2.0
3.5
3.0
4.0
5.0
1.5
2.5
3.0
2.5
2.0
4.0
5.0
2.5
3.5
4.0
2.0
1.5
3.5
5.0
2.5
3.5
4.5
3.5
3.0
4.5
6.0
3.0
4.5

875
810
760
725
695
670
650
745
700
665
635
615
595
585
925
850
790
750
710
680
660
940
860
795
745
705
675
645
615
570
535
505
485
470
455
875
795
730
680
640
605
575
505
465
440
415
400
385
375
665
605
555
520
490
465
445
875
790
720
665
625
585
555
1005
905
825
760
710
665
625
940
855
790
735
685
650

HP

1/2
C61
1/3
C1
1/4
C183
1/4
C183
1/4
C183
1/4 C183
1/4
C183
1/4
C183
3/4
C187
1/2
C186
1/3
C185
1/3
1/3
C185
1/4
C185
1/4
C185
1/4
C185
3/4
C91
C91
1/2
C91
1/2
1/2
C92
1/3
C90
1/4
C90
C90
1/4
C90
1/4
C90
1
C190
3/4
C199
1/2
C211
1/2 C211
1/2
C211
1/3
C188
1/3 C188
1/3
C188
1/4
C188
3/4
C38
1/2
C96
C96
1/2
1/2
C96
1/3
C95
1/3
C95
1/3
C95
1/4
C191
1-1/2 C193
1
C192
3/4
C192
3/4
3/4
C96
1/2
C96
C96
1/2
1/2
C96
1/3
C95
1
C16
3/4
C16
1/2
C101
1/2 C101
1/2
C101
1/3
C102
1/3
C102
1/3
C102
1-1/2 C105
1-1/2 C105
1-1/2 C105
1
C205
3/4
3/4 C205
3/4
C205
1/2
C204
1/2 C204
1/2
C204
3
C111
2
C108
1-1/2 C106
1-1/2 C106
1
C205
3/4
C205
3/4 C205
3/4
C205
5
C207
3
C111
C111
3
3
C111
2
C210
1-1/2 C105
1-1/2 C105
1-1/2 C105
1
C107
5
2C07
3
C111
3
C111
3
C111
2
C210
1-1/2 C105
1-1/2 C105
1-1/2 C105

4.5
5
1.5
2
2.5
3
3
3.5
0.5
1.0
1.5
2.0
2.5
2.5
4.0
4.5
0.5
1.5
2.0
2.5
3.0
3.5
4.5
3.0
3.5
0.0
1.0
1.5
4.0
3.0
3.5
4.0
4.5
5.0
0.0
2.0
3.0
4.0
4.5
1.5
2.5
3.0
3.0
3.5
3.0
3.5
4.0
4.5
5.0
3.0
4.5
3.0
4.0
4.5
1.0
1.5
2.0
1.5
3.0
4.5
2.0
2.5
3.5
1.5
1.0
3.0
4.5
1.5
3.0
3.5
3.0
2.0
4.0
5.0
2.0
3.5

945
885
845
810
785
760
745
820
775
745
725
705
695
680
985
915
860
820
790
765
740
990
915
855
810
770
740
715
665
620
590
565
545
530
520
910
830
770
720
685
655
630
540
510
485
465
450
440
430
690
635
590
555
530
510
490
900
815
750
700
655
620
595
1030
930
850
790
740
695
660
965
880
815
765
720
680

1/2
1/3
1/3
1/3
1/4
1/4
1/4
1/4
1/4
3/4
1/2
1/2
1/2
1/2
1/3
1/3
1/3
1/4
3/4
3/4
3/4
1/2
1/2
1/2
1/3
1/3
1/3
1/4
1
3/4
3/4
3/4
1/2
1/2
1/2
1/3
1/3
1/3
3/4
3/4
3/4
1/2
1/2
1/2
1/2
1/3
1/3
1/3
1-1/2
1-1/2
1-1/2
1
3/4
3/4
3/4
1/2
1/2
1/2
1
3/4
3/4
3/4
1/2
1/2
1/2
1/2
1/3
2
1-1/2
1
3/4
3/4
3/4
3/4
1/2
3
3
2
1-1/2
1-1/2
1-1/2
1
3/4
5
5
5
3
2
1-1/2
1-1/2
1-1/2
1
5
5
3
2
2
2
1-1/2

C61
C1
C1
C1
C183
C183
C183
C183
C183
C187
C187
C187
C186
C185
C185
C185
C91
C91
C91
C92
C90
C90
C90
C190
C199
C199
C199
C211
C211
C211
C202
C188
C38
C38
C38
C96
C96
C96
C95
C95
C95
C193
C193
C193
C192
C192
C192
C96
C96
C96
C16
C16
C16
C101
C101
C101
C102
C108
C105
C205
C205
C205
C205
C205
C204
C111
C111
C111
C108
C106
C106
C106
C205
C205
C207
C207
C111
C111
C210
C105
C105
C105
C107
C207
C207
C207
C111
C210
C210
C210
C105

3.5
4
4.5
0.5
1
1.5
1.5
2.5
3.5
3.5
0.0
0.0
0.5
0.5
3.0
4.0
4.5
0.5
1.0
1.5
1.5
3.0
4.0
4.5
3.0
3.5
4.0
0.0
3.0
3.5
2.5
3.0
3.5
4.0
4.0
1.0
3.0
3.5
4.0
4.5
1.5
2.0
2.0
2.5
3.5
2.5
3.0
3.0
3.5
4.0
3.5
2.5
3.0
4.0
4.0
0.5
1.0
3.0
2.5
4.0
5.0
2.0
2.5
1.0
3.0
2.5
3.5
0.5
2.0
3.0
2.5
4.0
3.0
4.5
5.0
2.5

1010
955
915
885
860
840
825
890
850
825
805
790
775
770
1040
975
925
890
860
835
820
1035
965
910
865
830
805
785
705
670
640
615
600
585
575
940
865
810
765
730
700
680
3580
550
525
510
500
490
485
720
665
625
595
570
550
535
840
780
730
690
655
630
1050
955
880
820
770
730
695
985
910
845
795
750
715

1/2
1/2
1/2
1/3
1/3
1/3
1/4
1/4
1/4
3/4
3/4
3/4
1/2
1/2
1/2
1/2
1/2
1
3/4
1/2
1/2
1/2
1/3
1/3
1/3
1-1/2
1
3/4
1/2
1/2
1/2
1/3
1
3/4
3/4
1/2
1/2
1/2
1/3
1-1/2
1-1/2
1-1/2
1
3/4
3/4
1/2
1/2
1/2
1
1
3/4
3/4
3/4
1/2
1/2
1/2
2
1-1/2
1-1/2
1-1/2
1
3/4
3/4
3/4
3
2
1-1/2
1-1/2
1-1/2
1
1
1
5
5
5
3
2
2
2
1-1/2
1-1/2
1-1/2
5
5
5
3
3
3
2
1-1/2

C61
C61
C61
C1
C1
C1
C183
C183
C183
C187
C187
C187
C187
C187
C187
C187
C91
C91
C91
C91
C91
C90
C90
C90
C201
C190
C199
C211
C211
C211
C202
C38
C38
C38
C96
C96
C96
C95
C193
C193
C193
C192
C192
C192
C96
C96
C96
C16
C16
C16
C16
C16
C101
C101
C101
C108
C105
C105
C105
C205
C205
C205
C205
C205
C111
C108
C106
C106
C106
C205
C205
C205
C207
C207
C111
C111
C210
C210
C210
C105
C105
C105
C207
C207
C207
C111
C111
C111
C210
C105

3
3.5
4
4.5
4.5
0
0
1.5
2.0
2.5
3.0
3.0
3.5
3.5
2.5
3.0
4.0
4.0
4.5
0.0
0.5
4.0
3.5
4.0
2.0
2.5
3.0
3.0
2.0
3.0
3.5
2.0
2.5
2.5
3.0
0.0
2.0
3.0
3.5
4.0
0.5
1.0
1.0
2.0
2.5
2.5
1.5
2.0
2.0
3.0
2.5
4.0
2.5
3.0
3.5
3.5
2.5
1.5
3.0
4.0
1.0
2.0
0.5
2.5
1.5
3.0
4.0
1.0
2.0
2.0
3.5
2.5
3.5
4.5
1.5

18

Heater Parts from ACF Greenhouses

PERFORMANCE DATA - CONTINUED
Models With or Without Blower Enclosure ➀ ➁ ➂ ➃ ➄
Data for use with filters only
0.5 Static Air Pressure
Model
No.

BD
50

BD
75

BD
100

BD
125

BD
150

BD
175

BD
200

BD
250

BD
300

BD
350

BD
400

Temp
Rise Airflow RPM
(°F)
(cfm)

40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70
40
45
50
55
60
65
70

926
823
741
673
617
570
529
1389
1235
1111
1010
926
855
794
1852
1646
1481
1347
1235
1140
1058
2315
2058
1852
1684
1543
1425
1323
2778
2469
2222
2020
1852
1709
1587
3241
2881
2593
2357
2160
1994
1852
3704
3292
2963
2694
2469
2279
2116
4630
4115
3704
3367
3086
2849
2646
–
4938
4444
4040
3704
3419
3175
6481
5761
5185
4714
4321
3989
3704
6584
5926
5387
4938
4558
4233

1070
1020
985
955
935
915
905
955
920
895
880
865
855
850
1095
1035
985
955
925
905
890
1080
1010
960
920
890
865
845
750
715
685
665
650
640
630
970
900
845
805
770
745
725
615
590
570
555
545
540
535
750
695
660
630
605
590
575
–
865
805
760
720
690
660
1070
975
905
845
800
760
725
1010
935
870
820
780
745

HP

3/4
1/2
1/2
1/2
1/3
1/3
1/3
1
3/4
3/4
3/4
1/2
1/2
1/2
1C
3/4
3/4
3/4
1/2
1/2
1/2
1/2
1/2
1 1/2
1
3/4
3/4
3/4
1/2
1/2
1/2
1
1
1
3/4
3/4
3/4
1/2
1/2
1/2
2
1 1/2
1
1
1
3/4
3/4
3/4
1/2
1-1/2
1
3/4
3/4
3/4
3/4
3/4
1/2
2
1 1/2
1-1/2
1 1/2
1
1
1
3/4
3/4
3/4
–
3
2
1 1/2
1
1/2
1-1/2
1 1/2
1
5
5
5
3
3
3
2
1 1/2
1-1/2
1 1/2
5
5
5
3
3
3
2
1 1/2

Sheave
Drive Turns
No. Open

C61
C61
C61
C61
C61
C1
C1
C1
C1
C91
C187
C187
C187
C187
C187
C187
C187
C91
C91
C91
C91
C91
C91
C91
C91
C201
C190
C199
C199
C199
C211
C211
C211
C211
C38
C38
C38
C38
C38
C96
C96
C96
C96
C80
C193
C192
C192
C192
C192
C192
C96
C105
C16
C16
C16
C16
C16
C16
C101
C108
C105
C105
C105
C205
C205
C205
C205
C205
–
C111
C108
C106
C106
C106
C106
C205
C207
C207
C207
C111
C111
C111
C210
C105
C105
C105
C207
C207
C207
C111
C111
C111
C210
C105

2.0
2.5
3.0
3.5
3.5
4.0
4.0
3.5
1.0
1.5
2.0
2.0
2.0
2.0
2.0
2.5
3.0
3.5
4.0
4.0
4.0
3.0
3.0
3.5
4.0
1.5
2.0
2.5
1.5
2.0
2.5
3.0
1.5
1.5
2.0
2.5
1.0
2.5
3.0
3.5
3.5
0.0
4.0
1.0
1.5
1.5
2.0
2.0
0.5
2.5
2.0
3.0
2.0
2.0
2.5
3.0
–
2.0
1.0
2.5
3.5
4.0
1.0
0.5
2.0
1.0
2.5
3.5
0.0
1.0
1.5
3.0
2.0
3.0
4.0
0.5

Filters

0.6 Static Air Pressure
0.7 Static Air Pressure
Sheave
Sheave
RPM
HP
Drive Turns RPM
HP
Drive Turns
No. Open
No.
Open

1130
1085
1050
1025
1000
985
975
1010
985
960
945
940
930
925
1145
1090
1045
1015
990
970
955
1125
1060
1010
970
940
920
900
–
755
730
715
700
690
680
1005
935
885
845
815
790
770
650
625
610
595
590
585
580
775
725
690
665
645
630
615
–
890
830
785
750
720
695
1095
1000
930
870
825
790
755
1035
955
895
850
805
775

3/4
3/4
3/4
1/2
1/2
1/2
1/2
1/3
1/3
1/3
1
1
1
3/4
3/4
3/4
3/4
3/4
3/4
1
1
1
3/4
3/4
3/4
3/4
1/2
1/2
1/2
1 1/2
1
3/4
3/4
3/4
3/4
1/2
1/2
1/2
–
1
3/4
3/4
3/4
3/4
3/4
1/2
2
1 1/2
1-1/2
1 1/2
1
3/4
3/4
3/4
3/4
1 1/2
11-1/2
1/2
1
1
1
3/4
3/4
3/4
3/4
2
2
2
1 1/2
11-1/2
1/2
1
1
1
3/4
–
3
2
2
2
1 1/2
1-1/2
1 1/2
1
5
5
5
3
3
3
2
1 1/2
1-1/2
1 1/2
5
5
5
3
3
3
2
2
2

C61
C61
C61
C61
C61
C61
C1
C1
C1
C91
C91
C91
C187
C187
C187
C187
C187
C187
C91
C91
C91
C91
C91
C91
C91
C91
C201
C190
C199
C199
C199
C199
C211
C211
C211
–
C38
C38
C38
C38
C38
C38
C96
C80
C193
C193
C193
C192
C192
C192
C192
C192
C105
C105
C105
C16
C16
C16
C16
C16
C16
C108
C108
C108
C105
C105
C105
C205
C205
C205
C205
–
C111
C108
C108
C108
C106
C106
C106
C205
C207
C207
C207
C111
C111
C111
C210
C100
C105
C207
C207
C207
C111
C111
C111
C210
C210
C210

1.5
2.0
2.5
2.5
3.0
3.0
3.0
3.0
3.0
0.5
1.0
1.0
1.0
1.0
1.0
2.0
2.5
3.0
3.0
3.5
3.5
2.5
2.0
3.0
3.0
3.5
1.0
1.5
–
1.5
2.0
2.0
2.5
2.5
1.0
1.5
0.5
1.5
2.5
2.5
3.0
3.5
3
4
0.5
0.5
1
1
1
2
3
2
3
0.5
2
2.0
–
1.5
0.5
1.5
2.5
3.5
0.5
0.0
1.5
0.5
2.0
3.0
4.0
0.0
1.0
2.5
1.0
2.5
3.5
4.0

–
–
–
–
–
–
–
–
1045
1025
1010
1005
1000
995
–
1140
1100
1070
1050
1030
1020
1165
1105
1055
1020
995
970
955
–
–
–
–
–
–
–
1035
970
920
880
855
830
815
685
660
645
635
630
625
625
–
755
720
695
680
665
655
–
915
860
815
780
750
725
–
1025
955
900
855
815
785
1055
980
920
875
835
800

–
–
–
–
–
–
–
–
1
1
1
3/4
3/4
3/4
3/4
3/4
–
1
3/4
3/4
3/4
3/4
3/4
1/2
1-1/2
1
1
1
3/4
3/4
3/4
3/4
1/2
–
–
–
–
–
–
–
2
2
2
1-1/2
1
1
1
3/4
3/4
3/4
–
–
–
–
–
–
–
–
2
1 1/2
1-1/2
1 1/2
1
11
1
–
3
3
3
2
1 1/2
11-1/2
1/2
1 1/2
–
5
3
3
3
2
2
2
1-1/2
5
5
5
3
3
3
2
2
2

–
–
–
–
–
–
–
–
C91
C91
C91
C187
C187
C187
C187
C187
–
C91
C91
C91
C91
C91
C91
C91
C201
C190
C190
C190
C199
C199
C199
C199
C211
–
–
–
–
–
–
–
C80
C80
C80
C193
C192
C192
C192
C192
C192
–
–
–
–
–
–
–
–
C108
C105
C105
C105
C205
C205
C205
C205
–
C111
C111
C111
C108
C106
C106
C106
C106
–
C207
C111
C111
C111
C210
C210
C210
C100
C207
C207
C207
C111
C111
C111
C210
C210
C210

–
–
–
–
–
–
–
–
2.5
2.5
0.0
0.0
0.0
0.0
–
1.5
2.0
2.0
2.5
2.5
2.5
1.5
1.5
2.5
2.5
3.0
3.0
0.5
–
–
–
–
–
–
–
1.0
2.5
0.5
1.5
2.0
2.5
2.5
–
–
–
–
–
–
–
–
2.5
1.0
2.0
1.0
1.0
1.0
–
1.0
2.0
1.0
1.5
2.5
3.0
–
1.5
0.0
1.0
2.5
3.0
4.0
0.5
2.0
0.5
2.0
2.5
3.5

For blower units with enclosure and filter, add
the following static pressures to the static
pressure determined by the system designer
for total external static pressure.
BD 50
BD 75
BD 100
BD 125
BD 150
BD 175
BD 200
BD 250
BD 300
BD 350
BD 400

0.1" W.C.
0.2" W.C.
0.2" W.C.
0.3" W.C.
0.1" W.C.
0.2" W.C.
0.1" W.C.
0.2" W.C.
0.2" W.C.
0.2" W.C.
0.2" W.C.

➀ Shaded area indicates the unit’s standard motor &

➁

➂
➃

➄

standard drive arrangement. For operation outside
the shaded area, specify motor Hp and drive
number.
Outputs shown are for elevations up to 2000'. For
elevations over 2000’, output needs to be reduced
4% for each 1000' above sea level. (Does not apply
in Canada - see rating plate)
Sheave turns open are approximate. For proper
operation, check blower rpm.
Mounting height and throw for BD models (w/o ductwork or nozzles and at an airflow yielding a 55°
temperature rise), are the same as those listed on
page 12 for equivalent PD models.
Rpm setting shown in bold type indicate factory
settings and standard drives.

Important: Note for 575V Only
HP & Drive
from this Catalog

BD 50

BD75

BD100

BD125

BD150

BD175

BD200

BD250
BD300
BD350
BD400

➀

HP & Drive to ORDER
from Price List ➀

1/4 - C182

=

1/4 - C194

1/4 - C183

=

1/4 - C195

1/3 - C1

=

1/3 - C61

1/4 - C184

=

1/4 - C196

1/4 - C185

=

1/4 - C186

1/3 - C185

=

1/3 - C186

1/4 - C200

=

1/4 - C208

1/4 - C90

=

1/4 - C92

1/3 - C90

=

1/3 - C92

1/4 - C188

=

1/4 - C189

1/3 - C188

=

1/3 - C189

1/3 - C202

=

1/3 - C211

1 1/2 - C201

=

1 1/2 - C209

1/4 - C191

=

1/4 - C197

1/3 - C197

=

1/3 - C197

1/3 - C95

=

1/3 - C96

1/3 - C95

=

1/3 - C96

1 1/2 - C193

=

1 1/2 - C198

1/4 - C212

=

1/4 - C213

1/3 - C212

=

1/3 - C213

1/3 - C102

=

1/3 - C101

1 1/2 - C105

=

1 1/2 - C180

1/3 - C203

=

1/3 - C204

1 1/2 - C105

=

1 1/2 - C180

1 1/2 - C106

=

1 1/2 - C108

1 1/2 - C105

=

1 1/2 - C180

1 1/2 - C100

=

1 1/2 - C210

1 1/2 - C105

=

1 1/2 - C180

Performance is the same; motor sheave can just
accomodate larger shaft.

19

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS – SAFETY DEVICES
(FRONT, TOP VIEW)

Figure 13
Service, Safety, and Other Major Unit Heater Components
LIMIT CONTROL
LOCATED UNDER
LEFT SIDE PANEL

VENT
VENT PIPE
CONNECTION

RELIEF
OPENING

BLOCKED
VENT SAFETY
SWITCH

DIMPLED
HEAT
EXCHANGER

FOR
SERVICE,
REMOVE
LEFT SIDE
PANEL

FAN
MOTOR

LOUVERS

PILOT
TUBING

COMBUSTION AIR
INLETS & BURNER

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 electric gas valve
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. Make sure deflector blades are open and that there are not
any obstructions in the air inlet or discharge outlet.
2. Check actual input to unit against rated input.
3. Check to be sure motor is operating.
4. On propeller units, check that fan is not loose on motor
shaft. On blower units, 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 Data on pages 18 or 19, check for restriction
in ducts and for dirty filters.
6. Check to make sure the venting system is not damaged or
blocked. Also check to be sure unit is venting normally and
that there is not negative pressure in the building adversely
affecting draft.
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

TERMINAL
BOARD
COMBINATION
GAS CONTROL

JUNCTION
BOX

the left outer side panel, held in place by screws at the rear
of the unit.
IMPORTANT NOTE:
The limit control (overheat switch) on this unit heater will shut
off the gas should excessive discharge temperatures occur. Do
not attempt to control the fan with the limit control. Any change
in wiring to attempt to control the fan with the limit control will
result in hazardous conditions and void the warranty.

Blocked Vent Safety Switch (BVSS)
A BVSS is supplied on all gravity-vented unit heaters and is
designed to prevent operation of the main burner if the venting
system is blocked.
If the BVSS has tripped, turn off the gas and electric supply to
the unit heater. Check the entire vent system connected to the
unit heater for blockage or damage.
In the case of a restricted vent, there may not be enough
dilution air to carry away the heat radiating off the heat
exchanger top (and surrounding area), the BVSS may exceed
the temperature setting and trip.
Spillage will also cause the BVSS to trip. If spillage exceeds
five minutes, even though the vent is in compliance with the
NFGC, some type of change must be made in the vent system
to stop the spillage. These changes (improvements) could be
lengthening the vertical vent run, reducing the horizontal vent
run, insulating the vent pipe, using a larger diameter vent pipe,
or using a less restrictive vent terminal.

20

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS – SAFETY DEVICES
With the switch reset, turn on the electric and gas supply to the
unit heater and restart the unit. Carefully observe the operation
of the unit to assure that it is operating correctly. If the block
vent switch does not allow the unit to function, or trips after the
unit has operated for a period of time, call a qualified service
agency to service the equipment. Do not attempt to bypass the
blocked vent safety switch with a switch. Do not attempt to
replace a defective blocked vent safety switch with a switch
other than that supplied by the unit heater manufacturer.

If these changes do not stop the spillage or the installer
chooses not to make changes, a power exhauster is really the
only recommended fix (see bulletin 6-530).
Low ambient installations can also be a cause for extended
spillage. Be aware that in these installations for freeze
protection and/or condensate protection, there is a good
chance that a power exhauster will be necessary.
In instances where the blocked vent safety switch trips
repeatedly, refer to Figure 14.
After the vent system has been changed, or if no blockage or
damage is found in the vent system, the blocked vent switch
may be reset. To reset the blocked vent switch, depress the
reset button located on the switch in the top of the unit.

Figure 14
BVSS - Troubleshooting Flow Chart
Is vent blocked or restricted?
NO

YES
Remove restriction

Is there spillage after 5 minutes? (see note 1)
NO

YES
Is there a negative pressure in building? (see note 2)
NO

YES
Can negative pressure
be corrected?
YES
Correct
negative
pressure

Replace blocked vent switch;
Does switch still trip?

NO

NO

YES

Is vent in compliance
with NFGC?

OK

NO

YES

Install
power vent
accessory

Correct vent
Is unit overfired?
NO

YES

Can one or more of the following be done?
• Lengthen vertical vent run
• Insulate vent
• Use larger diameter vent
• Use less restrictive weather cap

Reduce input

Note 1: To determine spillage, place lit match
stick (6" - 8" match stick if possible) 2" - 3"
into diverter relief opening and determine
direction of the flame (or direction of
smoke if flame goes out). If flame or
smoke comes back at you, there is
spillage. The flame or smoke should be
pulled in.
Note 2: One indication of negative pressure is
that outside doors tend to swing toward
inside of building.

NO

YES
Does unit still trip?
YES
Install power
exhauster accessory

Install power vent
accessory

NO
OK

21

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS – GENERAL
ONLY PEOPLE TRAINED AND FAMILIAR WITH THE
OPERATION OF UNIT HEATERS AND THEIR CONTROLS
SHOULD SERVICE THIS UNIT.

c.

Primary air shutters (when used).

d.

Clean heat exchanger tubes from bottom with stiff
brush after removing burner (Do not use wire brush).

General Maintenance

e.

Bottom pan.

1. Service air moving components annually.

f.

Fan blade.

a.

b.

On propeller units this includes checking motor for
lubrication if motor is not the permanently lubricated
type and check fan for fit on motor shaft and for
damage to blades.

3. Check wiring for possible loose connections.
4. Controls – See control instruction sheets furnished
separately with the unit heater.

On blower units this should include:
(1) Checking motor and blower bearings for lubrication.

To Remove Main Burner

(2) Checking belt and sheaves for proper alignment
and adjustment.

1. Turn off all electricity and gas to unit.

(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 inlets.

b.

Burner ports, pilot burner, and 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.

2. Lower bottom pan to expose burner and manifold. See
Figure 1, Page 2.
3. Disconnect pilot tubing and thermocouple lead (or ignition
cable) at the combination gas control (and ignition control.)
4. 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.

Troubleshooting Guide
Figure 15
Manifold Adjustment, Natural Gas

Figure 16
Air Shutter Adjustment, Propane Gas
MANIFOLD

MANIFOLD

AIR
SHUTTER

MAIN
BURNER
ORIFICES

MAIN
BURNER
ORIFICES

MANIFOLD MOUNTING
SCREW AND PIN

MIXER
TUBES
MIXER
TUBES

BURNER
RETAINING PIN

Combustion Problem Symptoms and Diagnosis
To realize full gas heating value requires periodic inspections
with proper combustion control corrections as outlined and
illustrated here.

Figure 17
Lifting Flame Condition

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 orifice size with those listed in Table 5 to be sure the unit
is not operating over rated input.

22

Heater Parts from ACF Greenhouses

TROUBLESHOOTING GUIDE
2. Yellow Tipping

6. Flame Rollout

Yellow tipping of a normally blue flame is caused by insufficient
primary air, and indicated incomplete combustion producing
carbon monoxide, aldehydes, and free carbon (soot). A dirty
orifice or one that is out of line, can also reduce primary air
and cause yellow tipping. Check orifice, 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
burner 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.

Flames rolling out of the combustion air inlets when the
burner is turned on can create a fire hazard, scorch unit
finish, burn wires, or damage controls. Gas in the burner
mixer may be ignited, producing flashback. Flame rollout is a
variation of floating flames, with flames reaching for air
outside the combustion chamber. Basic cause is lack of
combustion air that may be due to overfiring, poor venting, or
flue blockage.

Figure 20
Flame Rollout Appearance

4. Wavering Flames
Drafts across burners may cause flames to waver or 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
Wavering Flame or Misalignment

GOOD

BAD

Standing Pilot Problem Symptoms and Diagnosis
1. If pilot does not light:
POSSIBLE CAUSES AND REMEDIES
1a. Check that manual gas control (knob or lever) on
combination gas control is in the pilot position.
1b. Bleed air from pilot line. (Use special care in bleeding
propane units.)
1c. If pilot sputters, check pilot line for condensate or other
obstruction.
1d. If pilot flame is feeble or short, check pilot orifice for
cleanliness. Replace if necessary. See page 9 for pilot
flame adjustment.

5. Floating Flames
Floating flames are long – do not have well-defined cones,
roll around in the combustion chamber, sometimes
completely off the 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
near the port smothers and 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 flue. Check flue and clear any blockage.
Adjust primary air to get rid of yellow tipping that may
produce soot to block flueways. Make sure combustion air
inlets are not blocked.

Figure 19
Floating Flame Condition

1e. Be sure thermocouple contact point is clean. If problem
persists, replace thermocouple.
1f. If the above steps do not correct the condition, consult
your local qualified installation and service contractor or
appropriate utility company.

2. If standing pilot does not stay lit:
POSSIBLE CAUSES AND REMEDIES
2a. Check inlet pressure with all units operating, making
certain that there is proper pressure.
2b. Check pipe or tubing size to unit. See Table 2.
2c. Be sure all pilot connections are tight.
2d. Check for excessive drafts.
2e. Check for clogged pilot orifice or pilot line.
2f. Check for leaks around pilot fittings. If leaks cause flame
impingement on thermocouple lead, thermocouple may
become inoperative.

23

Heater Parts from ACF Greenhouses

TROUBLESHOOTING GUIDE
3. Effect of pilot operation on safety controls:
POSSIBLE CAUSES AND REMEDIES
3a. A short pilot flame may cause poor ignition and result in
the controls not opening the combination gas control or
reduce heat on thermocouple to the point where the
automatic controls become inoperative, thereby shutting
off gas supply to main burners. This may result from a
plugged orifice.
3b. Check electrical connection from the thermocouple
element to the safety valve to assure good electrical
contact. Also check location of pilot flame in relation to
thermocouple element.

4. If main burners do not light:
POSSIBLE CAUSES AND REMEDIES

2. Pilot lights, main burner will not light:
POSSIBLE CAUSE

POSSIBLE REMEDY

2a. Gas valve in off position.
2b. System in lock-out mode.
2c. Cracked or broken sensor
ceramic.
2d. Defective or loose
connections to flame sensor
or flame sensor lead.
2e. Incorrect gas pressure.

2a. Turn to on position.
2b. Reset system.
2c. Replace sensor.
2d. Correct or replace.

2f. Insufficient current signal
from flame sensor.

2e. Check and adjsut if
necessary to manufacturer’s
recommendations.
2f. Check current according to
manufacturer’s
recommendations and
replace if necessary.
2g. Check wiring.
2h. Check grounding means.

4d. If unit is equipped with an ECO (energy cut-off device
located on rear panel of unit) check fuse in ECO and
make sure it has not blown and is operating correctly.
Caution: The ECO fuse should blow only if excessive unit
temperatures are experienced. If fuse is blown make sure
the cause of the unit overheating is found and corrected
before replacing the fuse and placing the unit back into
operation.

2g. Incorrect or loose wiring.
2h. Poor ground to ignition
controller.
2i. No power to ignition controller
or gas valve
2j. Loose limit control
connections or defective limit.
2k. Defective or plugged gas
valve regulator.
2l. Defective thermostat or
thermostat out of calibration.
2m.Thermostat heat anticipator
incorrectly set.
2n. Defective ignition controller.
2p. Blocked vent safety switch
tripped.

4e. If the above does not correct the condition, consult your
local gas company or local Modine representative.

3. Burner shuts down before thermostat is satisfied:

4a. Check that manual valve on combination gas control is in
ON position.
4b. Be sure pilot is lit, correctly positioned and strong enough
to ignite burner ports.
4c. Check wiring (electrical power supply) to combination gas
control.

Intermittent Pilot Problem Symptoms and
Diagnosis

POSSIBLE CAUSE

POSSIBLE REMEDY

3a. Flame sensing circuit failure.

1. Pilot will not light or stay lit:
POSSIBLE CAUSE
1a. No spark at ignitor.

1b. Dirty or defective flame
sensor or loose connections
to flame sensor.

1c. Pilot valve electrical
connections loose.
1d. Defective pilot valve.
1e. Poor ground connections.
1f. No power from control
transformer.
1g. Spark not located in pilot gas
stream.
1h. Dirty or plugged pilot orifice.
1i. Pilot line kinked or
obstructed.
1j. Pilot flame too low.

1k. Flame sensor out of position.
1l. Defective ignition controller.

POSSIBLE REMEDY
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. Check milli-amps of sensor.
Tighten loose connections.
Clean sensor with steel wool.
Replace flame sensor if
necessary.
1c. Tighten connections.
1d. Replace.
1e. Check grounding means.
1f. Check transformer voltage on
secondary side for 25v.
1g. Correct or replace pilot.
1h. Clean or replace.
1i. Correct or replace pilot line.
1j. Check pilot flame and adjust
per valve manufacturer’s
recommendations.
1k. Reposition.
1l. Replace.

3b. Soot on sensing rod.
3c. Blockage in heat exchanger.
3d. Blockage in main burner
orifice.

2i. Check voltage to controller
and gas valve.
2j. Check connections. Replace
limit control if necessary.
2k. Inspect gas valve regulator.
Replace if necessary.
2l. Calibrate thermostat or
replace if necessary.
2m.Check anticipator setting
and correct if necessary.
2n. Replace.
2p. Refer to page 20 for
instructions

3a. Check flame sensing rod,
sensor ceramic, sensor lead
and connections for damage
or loss of continuity; Replace
defective elements.
3b. Clean off soot and adjust pilot
to smaller size.
3c. Clean heat exchanger.
Determine cause and correct.
3d. Clean or replace orifice.

4. Burner fails to shut off after thermostat is satisfied:
POSSIBLE CAUSE
4a. Faulty thermostat or
improper heat anticipator
setting.
4b. Defective ignition controller.
4c. Defective gas control.

POSSIBLE REMEDY
4a. Check thermostat and
anticipator setting. Replace if
defective.
4b. Replace
4c. Replace.

If a qualified service person cannot solve the problem, consult
your local gas company or Modine representative.
When servicing, repairing or replacing parts on these units always
give the complete Model Number (which includes power code and
control code) and Serial Number from the unit rating plate.
See page 26 for Model Number and Serial Number Designations.

CAUTION
Do not attempt to reuse ignition controllers which have been
wet. Replace defective controller.

24

Heater Parts from ACF Greenhouses

MOTOR DATA ➀ ➁ ➂
Power Code Description — Propeller PD Models
Pwr.
Code

Electric
Power

PD 30

PD 50

PD 75

PD 100

PD 125

01
02
04
05

115/60/1
230/60/1
200/60/3
230/460/60/3

1/40
1/40
–
–

1/40
1/40
–
–

1/12
1/8
1/4
1/4

1/12
1/8
1/4
1/4

1/8
1/8
1/4
1/4

PD 150 PD 175
Horsepower
1/8
1/8
1/4
1/4

1/6
1/6
1/3
1/3

PD 200

PD 250

PD 300

PD 350

PD 400

1/6
1/6
1/3
1/3

1/3
1/3
1/3
1/3

1/2
1/2
1/2
1/2

3/4
3/4
3/4
3/4

3/4
3/4
3/4
3/4

Motor Data and Total Unit Power Requirements — Propeller PD Models
Voltage
HP

Mtr.
Amps

1/40
1/12
1/8
1/6
1/4
1/3
1/2
3/4

1.0
1.6
2.3
2.8
–
5.4
7.5
8.0

115/60/1
Mtr.
Total
Rpm
Amps
1550
1625
1625
1075
–
1075
1075
1125

1.3
1.9
2.6
3.1
–
5.7
7.8
8.3

Total
Watts

Mtr.
Amps

110
200
300
310
–
490
690
840

0.4
–
1.0
1.5
–
2.2
3.5
4.0

230/60/1
Mtr.
Total
Rpm Amps
1550
–
1725
1075
–
1075
1075
1125

0.6
–
1.2
1.7
–
2.8
3.7
4.2

Total
Watts

Mtr.
Amps

110
–
300
310
–
490
690
840

–
–
–
–
1.3
1.9
2.4
3.6

200/60/3
Mtr.
Total
Rpm
Amps

Total
Watts

Mtr.
Amps

230/460/60/3
Mtr.
Total
Rpm Amps

Total
Watts

–
–
–
–
1725
1140
1140
1140

–
–
–
–
380
490
740
1040

–
–
–
–
1.3/.7
2.1/1.1
2.6/1.3
3.4/1.7

–
–
–
–
1725
1140
1140
1140

–
–
–
–
380
490
740
1040

–
–
–
–
1.7
2.1
2.8
3.8

–
–
–
–
1.6/0.8
2.4/1.2
3.2/1.6
3.6/1.8

Power Code Description — Blower BD Models
Power
Code
01
02
04
05
07
09
10
12
13
15
17
18
20
21
23
25
26
28
29
31
33
34
36
37
39
41
42
44
45
47
49
50
52
53
55

BD50
Electric Power
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3
115/60/1
230/60/1
200/60/3
230/460/60/3
575/60/3

HP
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/3
1/3
1/3
1/3
1/3
1/2
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4
3/4
–
–
–
–
–
–
–
–
–
–

Drive
182
182
182
182
194
183
183
183
183
195
1
1
1
1
61
61
61
61
61
61
61
61
61
61
61
–
–
–
–
–
–
–
–
–
–

BD75
HP
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/3
1/3
1/3
1/3
1/3
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4
3/4
1
1
1
1
1

Drive
184
184
184
184
196
185
185
185
185
186
185
185
185
185
186
186
186
186
186
186
187
187
187
187
187
187
187
187
187
187
91
91
91
91
91

BD100

BD125

BD150

BD175

BD200

BD250

BD300

BD350

BD400

HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive HP Drive HP
1/4 200 1/4 188 1/4 191 –
– 1/4 212 –
–
–
–
–
–
–
1/4 200 1/4 188 1/4 191 –
– 1/4 212 –
–
–
–
–
–
–
1/4 200 1/4 188 1/4 191 –
– 1/4 212 –
–
–
–
–
–
–
1/4 200 1/4 188 1/4 191 –
– 1/4 212 –
–
–
–
–
–
–
1/4 208 1/4 189 1/4 197 –
– 1/4 213 –
–
–
–
–
–
–
1/4 90 1/3 188 1/3 191 1/3 95 1/3 212 1/3 203 3/4 205 1 107 1-1/2
1/4 90 1/3 188 1/3 191 1/3 95 1/3 212 1/3 203 3/4 205 1 107 1-1/2
1/4 90 1/3 188 1/3 191 1/3 95 1/3 212 1/3 203 3/4 205 1 107 1-1/2
1/4 90 1/3 188 1/3 191 1/3 95 1/3 212 1/3 203 3/4 205 1 107 1-1/2
1/4 92 1/3 189 1/3 197 1/3 96 1/3 213 1/3 204 3/4 205 1 107 1-1/2
1/3 90 1/3 202 1/3 95 1/2 96 1/3 102 1/2 204 1 205 1-1/2 105 –
1/3 90 1/3 202 1/3 95 1/2 96 1/3 102 1/2 204 1 205 1-1/2 105 –
1/3 90 1/3 202 1/3 95 1/2 96 1/3 102 1/2 204 1 205 1-1/2 105 2
1/3 90 1/3 202 1/3 95 1/2 96 1/3 102 1/2 204 1 205 1-1/2 105 2
1/3 92 1/3 211 1/3 96 1/2 96 1/3 101 1/2 204 1 205 1-1/2 180 2
1/2 92 1/2 211 1/2 96 3/4 192 1/2 101 3/4 205 1-1/2 106 1-1/2 100 –
1/2 92 1/2 211 1/2 96 3/4 192 1/2 101 3/4 205 1-1/2 106 1-1/2 100 –
1/2 92 1/2 211 1/2 96 3/4 192 1/2 101 3/4 205 1-1/2 106 1-1/2 100 3
1/2 92 1/2 211 1/2 96 3/4 192 1/2 101 3/4 205 1-1/2 106 1-1/2 100 3
1/2 92 1/2 211 1/2 96 3/4 192 1/2 101 3/4 205 1-1/2 108 1-1/2 210 3
1/2 91 3/4 199 3/4 38
1 192 3/4 16
1 205 –
–
–
–
–
1/2 91 3/4 199 3/4 38
1 192 3/4 16
1 205 –
–
–
–
–
1/2 91 3/4 199 3/4 38
1 192 3/4 16
1 205 2 108 2 210 5
1/2 91 3/4 199 3/4 38
1 192 3/4 16
1 205 2 108 2 210 5
1/2 91 3/4 199 3/4 38
1 192 3/4 16
1 205 2 108 2 210 5
3/4 91
1 190 1
38 1-1/2 193 1
16 1-1/2 105 –
–
–
–
–
3/4 91
1 190 1
38 1-1/2 193 1
16 1-1/2 105 –
–
–
–
–
3/4 91
1 190 1
38 1-1/2 193 1
16 1-1/2 105 3 111 3 111 –
3/4 91
1 190 1
38 1-1/2 193 1
16 1-1/2 105 3 111 3 111 –
3/4 91
1 190 1
38 1-1/2 198 1
16 1-1/2 180 3 111 3 111 –
1
91 1-1/2 201 –
–
–
– 1-1/2 105 –
–
–
–
–
–
–
1
91 1-1/2 201 –
–
–
– 1-1/2 105 –
–
–
–
–
–
–
1
91 1-1/2 201 –
–
2
80 1-1/2 105 2 108 –
–
5 207 –
1
91 1- 1/2 201 –
–
2
80 1-1/2 105 2 108 –
–
5 207 –
1
91 1-1/2 209 –
–
2
80 1-1/2 180 2 108 –
–
5 207 –

Drive
–
–
–
–
–
105
105
105
105
180
–
–
210
210
210
–
–
111
111
111
–
–
207
207
207
–
–
–
–
–
–
–
–
–
–

➀ Whenever 200V/1φ, 230V/1φ, 200V3φ, or 230V/3φ is used, it is necessary to specify 200V/230V controls. Whenever 460V (or 575V) 3φ power is used, it is
necessary to choose between 200V/230V or 460V (or 575V) controls. The 200V/230V controls will require the installer to provide a 460V (or 575V) to 230V (or
200V), 75VA step-down transformer [if the power exhauster accessory is used, the step-down transformer needs to be 250VA] with the motor starter coil voltage
being 230V (or 200V). The 460V (or 575V) controls require no additional transformer (unless the power exhauster accessory is used, then a 460V (or 575V) to 230V,
250VA step-down transformer is needed) with the motor starter coil voltage 24V.

➁ PD units with 460V/3φ power supply are not listed by C.G.A.
➂ All 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 and all single phase motors have built-in thermal overload protection.

25

Heater Parts from ACF Greenhouses

MOTOR DATA ➀ ➂

(see page 25)

Motor Data and Total Unit Power Requirements – Blower BD Models
Voltage
HP
1/4
1/3
1/2
3/4
1
1-1/2
2
3
5

115/60/1
Mtr. Mtr. Total Total Mtr.
Amps Rpm Amps Watts Amps

230/60/1
200/60/3
230/460/60/3
Mtr. Total Total Mtr. Mtr. Total Total Mtr.
Mtr. Total Total Mtr.
Rpm Amps Watts Amps Rpm Amps Watts Amps Rpm Amps Watts Amps

575/60/3
Mtr. Total Total
Rpm Amps Watts

5.4
5.0
8.5
11.0
13.4
15.4
-

1725
1725
1725
1725
1725
1725
-

1725
1725
1725
1725
1725
1725
1725
1725
1725

1725
1725
1725
1725
1725
1725
-

5.7
5.3
8.8
11.3
13.7
15.7
-

390
410
600
870
1080
1490
-

2.7
2.5
3.8
5.5
6.7
7.7
-

2.9
2.7
4.0
5.7
6.9
7.9
-

390
410
600
870
1080
1490
-

1.2
1.9
2.3
2.9
4.0
5.2
6.8
10.6
14.3

1725
1725
1725
1725
1725
1725
1725
1725
1725

1.4
2.1
2.5
3.1
4.2
5.4
7.1
10.8
14.5

370
400
600
840
1100
1500
1950
3300
4400

1.3/0.7
1.6/0.8
2.6/1.3
3.0/1.5
3.8/1.9
5.2/2.6
6.6/3.3
8.8/4.4
13.2/6.6

1725
1725
1725
1725
1725
1725
1725
1725
1725

1.6/0.8
1.8/0.9
2.8/1.4
3.2/1.6
4.0/2.0
5.4/2.7
6.8/3.4
9.0/4.5
13.4/6.7

370
400
600
840
1100
1500
1950
3300
4400

0.6
0.6
0.9
1.1
1.5
1.9
2.3
4.0
5.2

0.7
0.7
1.0
1.2
1.6
2.0
2.4
4.1
5.3

370
400
600
840
1100
1500
1950
3300
4400

Blower Drive Numbers
Drive
No.
C1
C16
C38
C61
C80
C90
C91
C92
C95
C96
C100
C101
C102
C105
C106
C107
C108
C111
C180
C182
C183
C184
C185
C186
C187

Blower Sheave
Belt No.
Browning Pitch Dia.
A29
A48
A41
A30
A45
A35
A33
A36
A42
A43
A50
A50
A49
A54
A52
A45
A52
A52
A54
A36
A33
A43
A37
A38
A35

4
8
6
4
7
6
4
6
7
7
8
9
9
10
9
6
9
8
10
8
6
10
7
7
5

Motor Sheave
Max.
Pitch Dia. Bore

Bore
3/4
1
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
1
1
1
1
1
1
1
1
1
3/4
3/4
3/4
3/4
3/4
3/4

2.9
2.9
2.9
2.9
4.4
2.9
2.9
2.9
2.9
2.9
4.4
2.9
2.9
4.4
4.4
2.9
4.4
4.4
4.4
2.9
2.9
2.9
2.9
2.9
2.9

1/2
5/8
5/8
5/8
7/8
1/2
5/8
5/8
1/2
5/8
5/8
5/8
1/2
5/8
5/8
5/8
7/8
1-1/8
7/8
1/2
1/2
1/2
1/2
5/8
5/8

Drive
No.
C188
C189
C190
C191
C192
C193
C194
C195
C196
C197
C198
C199
C200
C201
C202
C203
C204
C205
C207
C208
C209
C210
C211
C212
C213

Blower Sheave
Belt No.
Browning Pitch Dia.
A38
A39
A35
A49
A40
A47
A37
A33
A44
A50
A47
A34
A39
A40
A35
A51
A52
A46
A51
A40
A40
A51
A36
A58
A59

7
7
4
11
5
8
8
6
10
11
8
4
8
6
5
10
10
7
7
8
6
8
5
14
14

Bore
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
1
1
1
1
3/4
3/4
1
3/4
1
1

Motor Sheave
Max.
Pitch Dia. Bore
2.9
2.9
2.9
2.9
2.9
4.4
2.9
2.9
2.9
2.9
4.4
2.9
2.9
4.4
2.9
2.9
2.9
2.9
4.4
2.9
4.4
4.4
2.9
2.9
2.9

1/2
5/8
5/8
1/2
5/8
5/8
5/8
5/8
5/8
5/8
7/8
5/8
1/2
5/8
1/2
1/2
5/8
5/8
1-1/8
5/8
7/8
7/8
5/8
1/2
5/8

Rating Plate Identification
Model Number Designations

MODEL IDENTIFICATION PLATE
POWER CODE CONTROL CODE

SERIAL NUMBER

01121010692

PD 150AE

01 12 101 10 97

FAN OR BLOWER
SUPPLIER CODE
01 Revcor
08 Brookside
etc.
SERIES IDENTITY NUMBER
Identifies which series of controls
were furnished on the unit.

150 A E

M 01 30

30

01

Serial Number Designations

MOTOR SUPPLIER CODE
01 Century
05 Universal
etc.

PD

MODEL NUMBER

YEAR OF
MANUFACTURE
97 1997
98 1998
etc.

WEEK OF
MANUFACTURE
10 10th week of 1997
25 25th week of 1997
etc.

PD - Propeller
Unit
BD - Blower
Unit
Input
150 - 150,000 Btu/hr input
175 - 175,000 Btu/hr input
250 - 250,000 Btu/hr input
etc.
Heat Exchanger
A - Aluminized
S - Stainless Steel

Control Code
30 - Complete Control Code
descriptions are shown on
page 27

Power Code
01 - Complete Power Code
descriptions
02 - are shown on page 25
etc.

M - Unit is equipped with 2-stage
or mechanical modulation
Ignition Type
A – Standing Pilot
E – Intermittent Pilot

26

Heater Parts from ACF Greenhouses

CONTROL OPTIONS
Propeller and Blower Unit Heaters – PD and BD Models ➀ ➁ ➂ ➃
Control
Thermostat
Service Voltage
Code No.
Voltage

Control System Description
Single-Stage, Standing Pilot, 100% Shut-Off – Utilizes a single-stage combination gas control and
thermocouple. Pilot needs to be manually lit initially and stays lit.

Two-Stage, Standing Pilot, 100% Shut-Off – Utilizes a two-stage gas control (which fires at 50% or 100% of
full rated input) and thermocouple. Pilot needs to be manually lit initially and stays lit.

Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry – Utilizes a single-stage
combination gas control and an ignition control (continuous retry). Pilot is automatically lit on call for heat.

Mechanical Modulation with Automatic Pilot Ignition, 100% Shut-Off with Continuous Retry – Utilizes a
modulating combination gas control and an ignition control (continuous retry). Pilot is automatically lit whenever
there is power to the unit. Modulation range is between 50% and 100% fire; gas control shuts off below 50%
fire. Available on BD models only.
Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry – Utilizes a two-stage combination
gas control (which fires at 50% or 100% of full rated input) and an ignition control (continuous retry). Pilot is
automatically lit only on call for heat.

➀
➁
➂
➃

Type of
Gas

11
12
13
14
81
82
91
92
25
26
83
84
30
31
32
33
85
86
93
94
59
60
89
90

115V
200/230V
460V
575V
115V
200/230V
460V
575V
115V
200/230V
115V
200/230V
115V
200/230V
460V
575V
115V
200/230V
460V
575V
115V
200/230V
115V
200/230V

25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V
25V

natural
natural
natural
natural
propane
propane
propane
propane
natural
natural
propane
propane
natural
natural
natural
natural
propane
propane
propane
propane
natural
natural
propane
propane

63
64
87
88

115V
200/230V
115V
200/230V

25V
25V
25V
25V

natural
natural
propane
propane

CGA approved 460V and 575V available on blower units only.
All PD and BD models with two-stage or modulating gas controls require a Category II vent system.
For units with control systems having fan timer, fan starts 30 seconds (max.) after ignition and shuts down approximately 60 seconds after main burner shuts down. Available on units with up to 1 hp
motors or 14 amps @ 115V A.C. Contact factory for applications with units having motors with horsepower ratings above 1 hp or 14 amps @ 115V A.C.
Whenever 200V/1φ, 230V/1φ, 200V3φ, or 230V/3φ is used, it is necessary to specify 200V/230V controls. Whenever 460V (or 575V) 3φ power is used, it is necessary to choose between 200V/230V
or 460V (or 575V) controls. The 200V/230V controls will require the installer to provide a 460V (or 575V) to 230V (or 200V), 75VA step-down transformer [if the power exhauster accessory is used,
the step-down transformer needs to be 250VA] with the motor starter coil voltage being 230V (or 200V). The 460V (or 575V) controls require no additional transformer (unless the power exhauster
accessory is used, then a 460V (or 575V) to 230V, 250VA step-down transformer is needed) with the motor starter coil voltage 24V.

Electrical Details
Supply
Voltage

Transformer
by Modine

115V
200V
230V
460V

X
X
X
X

575V

X

Transformer
by Others

X
X

➀

Control
Voltage
115V
200/230V
200/230V
460V
200/230V
575V
200/230V

Optional Controls required by others
Transformer
Motor Starter
Gravity Vented
Power Exhausted
Coil Voltage
–
–
–
–
460V/230V,75VA ➀
–
575V/230V,75VA ➀

–
–
–
460V/230V,250VA
460V/230V,250VA
575V/230V,250VA
575V/230V,250VA

–
200V
230V
24V
230V ➀
24V
230V ➀

460V(575V)/200V transformer as an alternative is okay. Motor starter coil then needs to be 200V also.

Control Operating Sequence
For Standing Pilot (with Pilot Lit)
Upon a call for heat from thermostat, power is supplied to the
combination gas control and at the same time power is supplied to the
fan timer. The main burner should light immediately. The fan motor will
start in 15 to 45 seconds.
When the thermostat has been satisfied, power is turned off to the
combination gas control and fan timer. The main burner will go out but
the pilot will continue to burn. The fan motor will continue to operate for
45 to 75 seconds to allow the heat exchanger to cool down.

For Intermittent Pilot
Upon a call for heat from the thermostat, power is supplied to the
ignition control and at the same time power is supplied to the fan timer.
Sparking will start at the pilot immediately and at the same time the first
operator of the combination gas control opens to allow gas 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
allowing gas to flow to the main burner. In 15 to 45 seconds from the
time the thermostat called for heat the fan motor will start.
On systems utilizing control codes 30-33, 85, 86, 93 or 94, the system
will attempt to light the pilot for 70 seconds once there is a demand for
heat. If the pilot is not sensed for any reason, the ignition control will

wait for a predetermined time with the combination gas control closed
and no spark. After the predetermined time lapses, the cycle will begin
again. The time that lapses between cycles is at pre-programmed
intervals (approximately 6 minutes). This will continue indefinitely until
the pilot flame is sensed or until power is interrupted to the system.
When the thermostat has been satisfied, power is turned off to the
ignition control and the combination gas control, so both the main gas
and pilot gas are turned off. The fan will continue to operate for 45 to 75
seconds to allow the heat exchanger to cool down.

Two-Stage Control Systems
The thermostat will start the unit with the combination gas control in the
first stage (50% of normal input). If the thermostat senses a further drop
in temperature the second stage (100% of normal input) of the
combination gas control will be energized. When the thermostat senses
an increase in temperature the combination gas control will be returned
to the first stage operation.

Mechanical Modulation Systems
When power is turned on the pilot is automatically lit. When the sensing
bulb attached to the combination gas control senses a drop in
temperature the valve will open at 50% of normal input. If the
temperature drops further the valve will open further. As the
temperature rises the valve will return to 50% of normal input. If the
temperature rises further the valve will close.

27

Heater Parts from ACF Greenhouses

Warranty
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 and packaged
rooftop units
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, and Burners and Sheet
Metal for all 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.
All Other Components Excluding Heat Exchanger (Condenser), Burner, and
Sheet Metal
All Seller Heating Products except St. Paul Produced products, Packaged
Rooftop Units, 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.
St. Paul Produced Products, Packaged Rooftop Units, and High Intensity GasFired 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.
Cancellation – Inspection – Rejection
Orders for material or equipment are not cancelable, either in whole or part, nor is
material returnable for credit.
Seller will replace any material or equipment not conforming to the product
description as agreed upon by Buyer and Seller as of the data of shipment only if
the Buyer notifies Seller, at the address on the Seller’s INVOICE, of the particular
details of non-conformance or defect of such material of equipment, by written or
electronic notice, either before or immediately upon delivery, and only if such nonconforming material or equipment is returned, sold, or otherwise disposed of in
accordance with instructions of Seller. Buyer agrees to inspect all of the ordered
material or equipment either before or upon delivery and waives all his rights to
reject or refuse to accept any non-conforming material or equipment unless notice
is given to Seller in the aforesaid time and manner. Buyer may inspect the ordered
material at Seller’s plant in an area designated by Seller. Buyer agrees that the
right of rejection of non-conforming material or equipment, as limited herein, and
the right to replacement by Seller with material or equipment, as limited herein,
and the right to replacement be Seller with material or equipment conforming to
the ordered specifications, are exclusive of all other remedies provided by law.
Written authorization must be issued by Seller before any material is returned to its
plant.
Governing Law
It is agreed that the parties hereto intend that all questions as to validity,
interpretation, and required performance arising out of this contract are to be
governed by the laws of the State of Wisconsin (Uniform Commercial Code).

As Modine Manufacturing Company has a continuous product improvement program, it
reserves the right to change design and specifications without notice.
Commercial HVAC&R Division
Modine Manufacturing Company
1221 Magnolia Avenue
Buena Vista, Virginia 24416
Phone: 1.800.828.4328 (HEAT)
Fax: 540.261.1903 (Service & Parts)
www.modine.com
© Modine Manufacturing Company 2002

3/02 - 24M Litho in USA

Heater Parts from ACF Greenhouses



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