Modine Manufacturing Bae Users Manual Pae Service

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6-551.31
Part 5H70880A (Rev. AA)

July, 1996

INSTALLATION AND SERVICE MANUAL
gas-fired unit heaters
models PAE and BAE
DESIGN
ERICAN
AM

GAS
R

OCIA

O

A

CE

N

R

SS

TI

APPROVED

R TI F I E D

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.

Pages

Inspection on arrival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation (including venting) . . . . . . . . . . . . . . . . . . . . . . .2-8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10
Checking input rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 & 15
Performance data . . . . . . . . . . . . . . . . . . . . . . . .13, 14 & 16-19
Service instructions – safety devices . . . . . . . . . . . . . . . .20-21
Service instructions – general . . . . . . . . . . . . . . . . . . . . . . . .22
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-24
Motor data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25-26
Control options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Model identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back cover

FOR YOUR SAFETY
If you smell gas:
1. Open windows
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.

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

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

Inspection on Arrival
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.

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).

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.

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 1A. 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 venter.

2. Turn off all gas before installing unit heaters.

20. Be sure no obstructions block air intake and discharge of unit heater.

3. Gas pressure to unit heater controls must never exceed 14” W.C.
(1/2 psi).

21. Do not attach duct work, air filters, or polytubes to any propeller
(PAE) model unit heaters.

When leak testing the gas supply piping system, the unit and its
combination gas control must be isolated during any pressure
testing in excess of 14’ W.C. (1/2 psi).
The unit should be isolated from the gas supply piping system by
closing its field installed manual shut-off valve.
4. Check gas inlet pressure at unit upstream from 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
gas-fired 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.

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 1A
Hinged Bottom for Burner Service
*(See Dimension "C" Table 6, page 12)

11. Do not install unit outdoors.
12. For all sizes, minimum clearance to combustibles from the bottom
is 12 inches and from the sides 18 inches; for sizes 30-100 from the
top is 1 inch and from the vent connector 2 inches; for sizes 125300 from the top is 2 inches and from the vent connector 3 inches;
and for sizes 350 & 400 from the top is 3 inches and from the vent
connector 6 inches.
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.

*MIN.

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/CGA-B149.2, “Installation
Code for Propane Burning Appliances and Equipment.”
1. Alliinstallation 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 A.G.A. and by C.G.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

!

CAUTION

For all sizes, minimum clearance to combustibles from the
bottom is 12" and from the sides 18"; for PAE sizes 30-100
from the top is 1" and from the vent connector 2"; for PAE
sizes 125-300 from the top is 2" and from the vent connector
3"; for PAE sizes 350 & 400 from the top is 3" and from the
vent connector 6”; and for all BAE sizes from the top and vent
connector 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 of the hinged bottom for servicing –
SEE FIGURE 1A.
On all propeller units, except the PAE 300, PAE 350 and PAE 400, two
tapped holes (3/8-16) are located in the top of the unit to receive ceiling
hangers.
Units with two point suspension, models PAE30 through PAE250,
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.

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.

PAE30 through PAE250 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

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.

The PAE 300, PAE 350 and PAE 400 have four mounting holes. On all
blower units, except the PAE 300, PAE 350 and PAE 400, two tapped
holes are provided in the top of the unit and two holes in the blower
support bracket. The PAE 300, PAE 350 and PAE 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.

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.

Note: Pipe hanger adapter kits, as shown in Figure 2, are available as
accessories from Modine. The hardware allows for pipe caps to be
secured into the top of the unit heater with machine screws (as
illustrated - machine screws are 3/8 - 16 x 1.75 UNC-2A THD). The pipe
caps can then accommodate 3/4" NPT pipe for mounting. Three
different kits are available with either 2, 4, or 6 adapters per kit. See
price sheet to determine proper kit.

Figure 2
Adjustable Mounting Brackets/Suspension Methods

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
Be sure the means of suspension is adequate to support the weight of the
unit. (See page 12 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.

REMOVE SIDE PANELS TO
ADJUST MOUNTING
BRACKETS

SUSPENSION WITH PIPE
ADAPTER KIT

3

Heater Parts from ACF Greenhouses

INSTALLATION

!

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/CGAB149.2 for propane units.

Table 1
PAE/BAE Venting System Category
Model Number
PAE 30

PAE/BAE 50-100
PAE/BAE 125-400

Gas Controls

Category

Single-Stage
Two-Stage
Single-Stage
Two-Stage
Modulating
All

I
II
I
II
II
I

Table 2
ANSI Unit Heater Venting Requirements
Category

Description

Venting
Requirements

I

Negative vent pressure
Non-condensing

Follow standard
venting requirements.

NOTE: A vent is the vertical passageway used to convey flue gases from the
unit or the vent connector to the outside atmosphere. A vent connector is
the pipe which connects the unit to a vent or chimney.

II

Negative vent pressure
Condensing

Condensate must be
drained.

Venting Instructions

Positive vent pressure
Non-condensing

Vent must be gastight.

III

Positive vent pressure
Condensing

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

1. Using Table 1, determine the venting system category of the unit to be
installed.
2. Using Table 2, determine the venting requirements for the category
determined above. The installation of a Category II unit must conform to
these requirements (detailed in following sections) in addition to those
listed below.
3. Select size of vent pipe to fit vent pipe connection at rear of appliance (see
Page 12, Dimension J). (Exception: All PAE/BAE 50 models with two-stage
or modulating controls must use a 5 inch vent.) 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 vent connectors 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.
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
(see page 2, section 12 for allowable reductions). For double wall vent
pipe, maintain clearances listed on vent pipe (Category I and II units).
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.

IV

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).
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.
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
10' MIN.
TO WALL OR ADJOINING BUILDING

APPROVED
TERMINAL

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.

2' *
MIN.
ROOF FLASHING

USE THIMBLE
THROUGH CEILING

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).

1/4"

UNIT

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.

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

DRIP LEG WITH
CLEANOUT CAP

*SIZE ACCORDING TO EXPECTED SNOW DEPTH.

4

Heater Parts from ACF Greenhouses

INSTALLATION
Piping

4.

!

CAUTION

5.
6.

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).

7.
8.

The appliance should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.

9.
10.

1.

2.

3.

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.
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 1. 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 1
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.
After threading and reaming the ends, inspect piping and
remove loose dirt and chips.

11.

12.
13.

14.
15.

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 high pressure
regulator and unit control string.
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 shutoff
valve.

Table 1
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

Table 2
Specific Gravity Conversion Factors
Multiplying factors to be sued with table 1 when the specific
gravity of gas is other than 0.60.

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
Wiring

!

Attachment of Field Installed Ductwork, Blower
dels (BAE) Models Only

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.

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

ANY WIRING DIFFERENT FROM WIRING DIAGRAM MAY
BE HAZARDOUS TO PERSONS AND PROPERTY.

Burned-out heat exchanger as well as shorter equipment life will
result from not providing uniform air distribution.

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).

When installing heater always follow good duct design practices
for even distribution of the air across the heat exchanger.
Recommended layouts are shown below. When installing
blower units with ductwork the following must be done.
1. Provide uniform air distribution over the heat exchanger.
Use turning vanes where required. See figures below.

All field installed wiring must be done in accordance with the
National Electrical Code ANSI/NFPA 70 – Latest Edition or
Canadian Electrical Code CSA C22.1 Part 1 or local codes. Unit
must be electrically grounded according to these codes. See
wiring diagram shipped with unit. For optional wiring diagrams
see Bulletin 6-443.

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.

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 three-phase
electric power must be provided with a motor starter having
properly sized overload protection.

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 12.

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.

!

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.

Installation of Blower Models (BAE UNITS)

!

CAUTION

CAUTION

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

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

12"
MIN.

B

12"
A

3" MAX.

B

12" MIN.

A

A

TURNING
VANES
BAFFLE

SIDE VIEW

SIDE VIEW

D

TOP VIEW

E

F

12"
MIN.

12"
MIN.

B

B

A

BAFFLE

SIDE VIEW

TURNING
VANES

A

TURNING
VANES

BAFFLE

SIDE VIEW

TOP VIEW

6

Heater Parts from ACF Greenhouses

INSTALLATION
Installation of Blower Models (BAE UNITS)

To Install (Figure 5):

Determining Blower Speed

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

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.

Figure 5
Blower Model Installation
MOTOR MOUNTING
BRACKET

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 BAE 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 C116 drive, and the drive sheave must be
set at 3 turns open to achieve a blower speed of 940 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.
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
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 BAE 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.
Entering the performance table on page 19 (Blower models with
filters) for a BAE 350, at 6481 cfm and 0.2" W.C. static
pressure, it is seen that the unit will require a 5 hp motor using a
C116 drive, and the motor sheave should be set at .5 turns
open to achieve a blower speed of 1055 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.

MOTOR SHEAVE
(MOVEABLE FACE TO OUTSIDE)
OIL CUPS
UP

MOTOR
ADJUSTMENT
SCREW

BLOWER
SHEAVE

TIE DOWN STRAP
& BLOCK FOR
SHIPPING ONLY

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 28 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.

7

Heater Parts from ACF Greenhouses

INSTALLATION
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 adjustable motor
sheave is supplied with these units. If blower fan speed changes
are required, adjust motor sheave as follows:

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.

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

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

1. Shut-off power before making blower speed adjustments.
Refer to Determining Blower Speed on page 7 and to Blower
Drive Selection on pages 18 and 19 to determine proper
blower RPM.

8. Re-check blower speed after adjustment.
9. Check motor amps. Do not exceed amps shown on motor
nameplate. Slow blower if necessary.

3. Loosen set screw on outer side of adjustable motor sheave
(see Figure 6).

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.

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

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

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

Figure 6
Motor Sheave Adjustment

Figure 6a
Belt Tension Adjustment

SET SCREW
TOWARD MOTOR

3/4" DEFLECTION
WITH 5# FORCE
ADJUSTABLE HALF
OF SHEAVE

8

Heater Parts from ACF Greenhouses

OPERATION

CAUTION

Figure 7
Correct Pilot Flame

Pilot Flame Adjustment

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)

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.

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.

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

ELECTRICAL
CONNECTION
TERMINALS

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).

Natural

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

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 5 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.
1. Determine correct manifold pressure from Table 4.

Input Adjustments

2. Locate combination gas control.

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.

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

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.

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 4, 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 4, 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.

2. Start the heater and determine the number of seconds it
takes to consume 1 cu. ft. of gas. Two basic formulas are
useful:
F1 = 3600 C/T
F2 = F1/C

10

Heater Parts from ACF Greenhouses

CHECKING INPUT RATE

Table 4
Manifold Pressure & Gas Consumption *

Figure 9
“U” TUBE
MANOMETER

ECO (ON UNITS
SO EQUIPPED.
SEE NOTE 5 ON
PAGE 16.)

LIGHTING
INSTRUCTION &
RATING PLATE
FAN MOTOR

JUNCTION BOX

PILOT TUBING

CONTROL
TRANSFORMER
COMBINATION
GAS CONTROL

OUTLET
PRESSURE TAP

Table 3
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.

Propane
2500
1.53
10.0

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

28.6
–
126
37

12.0
.33
300
52

PAE 50
BAE 50

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

47.6
–
76
30

20.0
.55
180
45

PAE 75
BAE 75

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

71.4
–
50
20

30.0
.82
120
37

PAE 100
BAE 100

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

95.2
–
38
30

40.0
1.15
90
45

PAE 125
BAE 125

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

119.0
–
30
25

50.0
1.43
72
42

PAE 145
BAE 145

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

138.1
–
26
30

58.0
1.64
62
45

PAE 175
BAE 175

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

166.7
–
22
27

70.0
1.86
51
43

PAE 200
BAE 200

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

190.5
–
19
23

80.0
2.19
45
40

PAE 225
BAE 225

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

214.3
–
17
28

90.0
2.46
40
43

PAE 250
BAE 250

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

238.1
–
15
25

100.0
2.74
36
42

PAE 300
BAE 300

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

285.7
–
13
26

120.0
3.29
30
43

PAE 350
BAE 350

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

333.3
–
11
22

140.0
3.84
26
39

PAE 400
BAE 400

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

381.0
–
9
23

160.0
4.38
23
40

PAE 30

FAN GUARD

GAS
DESIGNATION
PLATE

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

20
22
23
25
26
27
28
30

.1610
.1570
.1540
.1495
.1470
.1440
.1405
.1285

Dia.
Decimal
Equivalent

37
39
40
42
43
45
52

.1040
.0995
.0980
.0935
.0890
.0820
.0635

Pilot Burner
Manufacturer
Honeywell
Robertshaw

Identity No.
Natural Gas

Identity No.
Propane Gas

HCR-18 or BCR-18

HBR or BBR-12 or 11

①
1

8
N

Johnson

①

1

1

2

2

3

3

3

4

4

5

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 – PAE
C

A

For all sizes, minimum clearance to com-bustibles
from the bottom is 12 inches and from the sides 18
inches; for sizes 30-100 from the top is 1 inch and
from the vent con-nector 2 inches; for sizes 125300 from the top is 2 inches and from the vent
connector 3 inches; and for sizes 350 and 400 from
the top is 3 inches and from the vent connector 6
inches. Also, allow at least 12 inches at the rear, or
6 inches beyond the end of the motor (whichever is
greater), to provide ample air for combustion and
for proper operation of fan.

H
J VENT PIPE

F
X

W

K

G

AA
K

E

B

BB
EE

Clearance at bottom should equal “C” dimen-sion
for each model number.

LL
L - Approx

D (OPENING)

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

Dimensions (inches) — PAE

Do not use propeller units with duct work.

Dimension

①
➁
➂
➃

Model Number

Symbol

PAE 30

PAE 50

PAE 75

A

12-7/8

17-1/4

19-1/4

B

24-1/4

28-3/4

28-3/4

C

14-3/4

20

20

D

10-7/16 14-13/16 16-13/16

PAE 100

PAE 125

PAE 145

PAE 175

PAE 200

PAE 225

PAE 250

PAE 300

PAE 350

PAE 400

21

21

23-1/2

25-5/8

25-5/8

28-5/8

28-5/8

33-5/8

33-5/8

40

35-1/4

35-1/4

35-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

22

22

22

25

25

25

25

25

25

25

18-9/16

18-9/16

21-1/16

23-3/16

23-3/16

26-3/16

26-3/16

31-3/16

31-3/16

37-1/2
24

E

13

16

16

20

20

20

24

24

24

24

24

24

F

8-7/8

11-1/2

11-1/2

12-1/2

12-1/2

12-1/2

14-1/2

14-1/2

14-1/2

14-1/2

–

–

–

G

1-7/8

2-5/8

2-5/8

3-3/8

3-3/8

3-3/8

4-1/8

4-1/8

4-1/8

4-1/8

4-1/4

4-1/4

4-1/4
36-3/8

H

9-1/4

13-5/8

15-5/8

17-3/8

17-3/8

19-7/8

22

22

25

25

30

30

AA

5

6-1/4

6-1/4

8

8

8

9

9

9

9

9

9

9

BB

6-1/2

6-1/2

6-1/2

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

J①

4

4

5

6

6

7

7

8

8

8

9

10

10

K (Mounting
Holes) ➂

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-15

3/8-16

3/8-16

Gas Connections ➁

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

3/4

3/4

W

–

–

–

–

–

–

–

–

–

–

5

5

5

X

–

–

–

–

–

–

–

–

–

–

16

16

16

L➃

28-1/4

35

35

37-1/2

37-1/2

38

41

41

43

43

44-3/8

44-3/8

48-1/2

LL

18-1/2

24

27

31-1/2

31-1/2

32

35

35

35

37

38-3/8

38-3/8

42-1/2

EE

–

29

29

30-1/2

30-1/2

30-1/2

32-7/8

32-7/8

32-7/8

32-7/8

32-7/8

32-7/8

32-7/8

Fan Diameter

9

12

14

16

16

18

20

20

22

22

22

22

24

Approx. Weight

58#

102#

116#

156#

162#

169#

231#

231#

231#

261#

330#

330#

410#

Diameter of round vent pipe to fit oval opening.
For natural gas; may vary depending on control availability.
PAE 30 through PAE 250 — 2 holes (and the level hanging adjustment feature). PAE 300 through PAE 400 — 4 holes.
Dimension equals overall plus 6".

Performance — PAE
Standard

Model Number
PAE 30 PAE 50 PAE 75 PAE 100 PAE 125 PAE 145 PAE 175 PAE 200 PAE 225 PAE 250 PAE 300 PAE 350 PAE 400

Btu/Hr. Input

30,000 50,000

75,000 100,000

125,000

145,000

175,000

200,000

225,000

250,000

300,000

350,000

400,000

Btu/Hr. Output

24,300 40,000

60,000

80,000

100,000

116,000

140,000

160,000

180,000

200,000

240,000

280,000

320,000

Entering CFM

440

740

1130

1440

1850

2400

2500

3000

3300

4100

4400

5000

5900

Outlet Velocity

515

495

664

616

789

893

713

852

832

1024

960

1094

1094

Air Temp. Rise °F

51

50

49

51

50

46

52

49

51

45

51

52

50

Mounting Hgt.
(Max. Ft.) ①

7

8

11

10

13

17

13

16

15

20

18

20

21

Heat Throw Ft. ①
Horsepower

25

27

39

36

47

59

45

55

54

72

64

71

74

1/40

1/40

1/30

1/30

1/15

1/6

1/6

1/6

1/6

1/3

1/3

3/4

3/4

1.3
1.3
2.3
2.3
Motor Amp Draw
Data
RPM
1550
1550
1050
1050
➁
Type
Shaded Shaded Shaded Shaded
Pole
Pole
Pole
Pole

2.7

3.1

3.1

3.1

3.1

5.7

5.7

9.1

9.1

1050

1075

1075

1075

1075

1075

1075

1140

1140

Shaded Perm.
Perm.
Perm.
Perm.
Perm.
Perm.
Perm.
Perm.
Pole
Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap. Split Cap.

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 – BAE
For blower sizes, minimum
clearance to combustibles from
the bottom is 12", from the sides
18", and from the top and vent
connector 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.

C

A
F

H

J VENT PIPE

N

EE
P

X

W
K

4-5/8''

S
G

AA

O

QxV

K
B

E

RxT

BB

Clearance at bottom should
equal “C” dimension for each
model number.

BLOWER
ENCLOSURE
(OPTIONAL)

M (APPROX.)

D (OPENING)

FILTER RACK
(OPTIONAL)

L (MIN. DISTANCE TO WALL)

Dimensions (inches) — BAE
BAE 50

BAE 75

BAE 100

BAE 125

BAE 145

BAE 175

BAE 200

BAE 225

BAE 250

BAE 300

BAE 350

A

17-1/4

19-1/4

21

21

23-1/2

25-5/8

25-5/8

28-5/8

28-5/8

33-5/8

33-5/8

40

B

28-3/4

28-3/4

35-1/4

35-1/4

35-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

40-1/4

20

20

C
D

①
➁
➂
➃
➄
➅

Model Number

Dimension
Symbol

14-13/16 16-13/16

BAE 400

22

22

22

25

25

25

25

25

25

25

18-9/16

18-9/16

21-1/16

23-3/16

23-3/16

26-3/16

26-3/16

31-3/16

31-3/16

37-1/2
24

E

16

16

20

20

20

24

24

24

24

24

24

F

11-1/2

11-1/2

12-1/2

12-1/2

12-1/2

14-1/2

14-1/2

14-1/2

14-1/2

–

–

–

G

2-5/8

2-5/8

3-3/8

3-3/8

3-3/8

4-1/8

4-1/8

4-1/8

4-1/8

4-1/4

4-1/4

4-1/4
36-3/8

H

13-5/8

15-5/8

17-3/8

17-3/8

19-7/8

22

22

25

25

30

30

AA

6-1/4

6-1/4

8

8

8

9

9

9

9

9

9

9

BB

6-1/2

6-1/2

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

7-1/4

J①

4

5

6

6

7

7

8

8

8

9

10

10

K➃

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

3/8-16

Gas Connections ➁

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

1/2

3/4

3/4

W

–

–

–

–

–

–

–

–

–

5

5

5

X

–

–

–

–

–

–

–

–

–

16

16

16

EE

46-5/8

49-5/8

56-5/8

56-5/8

56-5/8

63-5/8

63-5/8

63-5/8

63-5/8

63-5/8

63-5/8

63-5/8

L w/ Blwr Encl & Filt Rk

52-5/8

55-5/8

62-5/8

62-5/8

62-5/8

69-5/8

69-5/8

69-5/8

69-5/8

69-5/8

69-5/8

69-5/8

L w/o Blwr Encl & Filt Rk

43-3/4

46-3/4

52-3/4

52-3/4

53-3/4

58-3/8

58-3/8

58-3/8

58-3/8

58-3/8

58-3/8

64-1/2

M➂

37-3/4

40-3/4

46-3/4

46-3/4

47-3/4

52-3/8

52-3/8

52-3/8

52-3/8

52-3/8

52-3/8

58-1/2

N➄

14-3/8

17-1/8

21

21

21

24-1/4

24-1/4

24-1/4

24-1/4

18

18

22

O

5-3/4

5-3/4

7-1/4

7-1/4

7-1/4

8-1/2

8-1/2

8-1/2

8-1/2

8-1/2

8-1/2

8-1/2

P

22

25

30

30

30

34

34

34

34

34

34

34

Q Blower Encl Ht

17-1/8

17-1/8

21-3/8

21-3/8

21-3/8

25-1/8

25-1/8

25-1/8

25-1/8

25-1/8

25-1/8

25-1/8

V Blower Encl Width

17-1/2

21-1/4

29

29

29

34-1/4

34-1/4

34-1/4

34-1/4

44-3/8

44-3/8

44-3/8

R Inlet Duct Height

15-3/4

15-3/4

20

20

20

23-3/4

23-3/4

23-3/4

23-3/4

23-3/4

23-3/4

23-3/4

T Inlet Duct Width

16

19-3/4

27-1/2

27-1/2

27-1/2

32-3/4

32-3/4

32-3/4

32-3/4

42-7/8

42-7/8

42-7/8

Center to Center
Blower Mtg. Holes S

10-15/16

13-7/16

17-3/8

17-3/8

17-3/8

20-3/8

20-3/8

20-3/8

20-3/8

20-3/8

20-3/8

20-3/8

Std. Mtr. Pulley Dia. ➅

3

3

3

3

3

3

3

3

3

3

41¼2

41¼2

Std. Blower Pulley Dia.

9

10

15

13

9

13

12

9

8

8

11

11

Blower Wheel Diameter

8

9

13

13

13

15

15

15

15

15

15

15

Approx. Weight

146#

158#

215#

215#

231#

307#

307#

331#

331#

420#

420#

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.
BAE 50 thru BAE 250 — 4 holes (2 on blower and 2 on unit).
BAE300 thru BAE 400 — 6 holes (2 on blower and 4 on unit).
Distance between mounting hole in unit casing and mounting hole on blower. On the BAE 300 thru BAE 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 BAE models, without ductwork or nozzles, and at a cfm
yielding a 55° temperature rise are the same as those listed for equivalent size PAE units.

Standard Blower Motor Data — BAE
Standard
Horsepower
Amps (@ 115 volt) ①
RPM
Type

Model Number
BAE 50 BAE 75 BAE 100 BAE 125 BAE 145 BAE 175 BAE 200 BAE 225 BAE 250 BAE 300 BAE 350 BAE 400
1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/4
5.4
1725
Split
Phase

1/2
8.5
1725
Split
Phase

1/2
11
1725
Split
Phase

3/4
11
1725
Split
Phase

1
13.4
1725
Perm.
Split Cap.

1-1/2
15.0
1725
Cap.
Start

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

13

Heater Parts from ACF Greenhouses

PERFORMANCE DATA – NOZZLES
90° VERTICAL
NOZZLE

A choice of four air discharge nozzles
accommodate various heat throw
patterns illustrated. Equipped with
adjustable louver blades, nozzles
are fabricated from galvanized
steel and are offered either
unpainted or painted to match
the finish of the blower unit
heaters. Nozzles are flanged
for easy attachment over
the air discharge opening
of the blower unit heater.

H
H

T

S

S

S

40° DOWNWARD
NOZZLE

5-WAY
NOZZLES
T

T
S

H

40° SPLITTER
NOZZLE
S
S

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

40°
Downward
Nozzle

90° Vertical
Nozzle

BAE-50 BAE-75 BAE-100 BAE-125 BAE-145 BAE-175 BAE-200 BAE-225 BAE-250 BAE-300 BAE-350 BAE-400

Max. Mounting Ht. (ft.) H

14

16

18

22

21

24

27

24

26

28

32

32

Heat Throw (ft.) T

41

49

54

66

63

72

81

71

78

83

96

96

Heat Spread (ft.) S

14

16

18

22

21

24

27

24

26

28

32

32

15

17

18

22

22

21

24

24

26

28

32

32

15

17

18

22

22

21

24

24

26

28

32

32

–

–

16

20

20

21

24

21

23

26

30

32

Heat Throw (ft.) T

–

–

41

50

49

52

59

53

58

65

75

80

Heat Spread (ft.) S

–

–

81

100

97

104

117

106

116

129

151

160

Max. Mounting Ht. (ft.) H
Heat Spread (ft.) S
Max. Mounting Ht. (ft.) H

40° Splitter
Nozzle
5-Way
Nozzle

Max. Mounting Ht. (ft.) H
Heat Spread (ft.) S

12

14

15

18

17

18

20

20

21

20

23

26

17

20

21

26

24

25

28

27

30

27

32

37

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

/4"

/4"

B

B

3

D

D

C
C

40°
Downward Nozzles

A

A
3

40°
Splitter Nozzles

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

Dimension
Symbol
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D

Model Number
BAE-50

BAE-75

BAE-100 BAE-125

BAE-145

14-13/16 16-13/16 18-9/16 18-9/16 21-1/16
16
16
20
20
20
24
22
26
26
25
4
3
4
4
4
14-13/16 16-13/16 18-9/16 18-9/16 21-1/16
16
16
20
20
20
15
17
22
22
23
6
6
8
8
8
–
–
18-9/16 18-9/16 21-1/16
–
–
20
20
20
–
–
34
34
33
–
–
10
10
11
14-13/16 16-13/16 18-9/16 18-9/16
21
16
16
20
20
20
20-3/4
22-3/4 24-1/2 24-1/2
27
11
12
13
13
14

BAE-175

BAE-200

BAE-225

BAE-250

BAE-300

BAE-350

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

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

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

BAE-400

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
Performance Data — 30°, 60° and 90° Downward Deflector Hoods — Propeller Models
Mounting
Height to
Bottom of
Heater

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

30° Downward Hood For Propeller Units ➀
PAE 50 PAE 75
XYZ
XYZ
6 14 19 10 24 32
–
9 21 30
–
6 17 24
–
–
–
–
–
–
–
–
–
–
–
–

PAE 100
XYZ
9 22 31
8 19 27
5 13 19
–
–
–
–
–
–

PAE 125
XYZ
14 30 41
12 29 39
11 26 36
9 23 32
–
–
–
–
–

Mounting
Height to
Bottom of
Heater

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

PAE 145
XYZ
18 38 52
17 37 51
16 36 49
14 34 47
12 31 43
–
–
–
–

PAE 175
XYZ
13 28 39
11 26 36
10 24 33
7 19 27
–
–
–
–
–

PAE 200
XYZ
17 36 49
15 35 47
14 33 45
13 31 42
10 27 38
7 20 29
–
–
–

PAE 225
XYZ
17 36 49
15 34 47
14 33 45
12 30 42
10 27 37
7 20 29
–
–
–

PAE 250
XYZ
23 48 65
22 47 64
21 46 63
20 44 61
18 42 58
17 40 56
15 37 52
12 32 45
–

PAE 300
XYZ
20 42 57
19 41 56
18 40 54
16 38 52
15 36 49
13 33 45
10 27 38
–
–

PAE 350
XYZ
23 48 65
22 47 64
21 46 62
20 44 61
18 42 58
16 40 55
15 37 51
12 32 45
–

PAE 400
XYZ
24 50 68
23 49 67
22 48 65
21 47 64
19 45 62
18 43 59
16 40 55
14 36 51
9 27 39

PAE 300
XYZ
0 45 61
0 43 59
0 41 57
0 39 53
0 35 49
0 31 42
0 23 32
0 16 23
–

PAE 350
XYZ
0 51 69
0 49 68
0 48 65
0 46 62
0 43 59
0 40 54
0 35 48
0 28 39
0 21 30

PAE 400
XYZ
0 53 73
0 52 71
0 50 69
0 48 66
0 46 63
0 43 59
0 39 53
0 33 46
0 22 31

PAE 300
S

PAE 350
S

PAE 400
S

57
51
47
43
41
38
36
35
33
32
31
30
–
–

68
60
55
51
48
45
43
41
39
38
36
35
34
–

74
66
60
56
52
49
47
45
43
41
40
38
37
36

60° Downward Hood For Propeller Units ➀
PAE 50
XYZ
0 13 18
–
–
–
–
–
–
–
–

PAE 75 PAE 100
XYZ
XYZ
0 24 33 0 22 30
0 21 29 0 18 25
0 15 21 0 9 13
–
–
–
–
–
–
–
–
–
–
–
–

PAE 125 PAE 145 PAE 175 PAE 200 PAE 225 PAE 250
XYZ
XYZ
XYZ
XYZ
XYZ
XYZ
0 32 43 0 41 56 0 30 40 0 38 52 0 38 51 0 51 70
0 29 40 0 39 54 0 27 37 0 36 49 0 36 49 0 50 68
0 26 36 0 37 51 0 23 32 0 34 46 0 33 45 0 48 66
0 21 29 0 34 47 0 16 23 0 30 41 0 30 41 0 46 63
0 15 22 0 30 41
–
0 25 35 0 25 34 0 43 59
–
0 24 33
–
0 14 19 0 14 19 0 40 55
–
–
–
–
–
0 35 49
–
–
–
–
–
0 28 39
–
–
–
–
–
–

Mounting
Height to
Bottom of
Heater

90° Downward Hood For Propeller Units ➀

Model

PAE 50
S

8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'

14
12
11
–
–
–
–
–
–
–
–
–
–
–

PAE 75 PAE 100 PAE 125 PAE 145 PAE 175 PAE 200 PAE 225 PAE 250
S
S
S
S
S
S
S
S
23
21
19
17
16
–
–
–
–
–
–
–
–
–

23
20
19
17
16
–
–
–
–
–
–
–
–
–

34
30
27
25
23
22
21
–
–
–
–
–
–
–

46
42
38
35
33
31
29
–
–
–
–
–
–
–

32
29
26
25
23
22
21
–
–
–
–
–
–
–

44
39
36
33
31
29
28
27
25
–
–
–
–
–

44
39
36
33
31
29
28
26
25
–
–
–
–
–

65
58
53
50
46
44
41
40
38
36
35
34
–
–

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°

MOUNTING
HEIGHT

30° HOOD

60° HOOD
X

60° NOZZLE

X

Y

Z
30° NOZZLE

Y
Z

16

Heater Parts from ACF Greenhouses

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

30° Downward Hood For Blower Units ➁
Model

BAE 50

BAE 75

BAE 100 BAE 125 BAE 145 BAE 175 BAE 200 BAE 225

BAE 250

BAE 300

BAE 350

BAE 400
8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

11 24 33
9 22 30
7 18 25
–
–
–
–
–
–
–
–
–

16 35 48
15 34 46
14 32 44
12 29 41
10 26 36
–
–
–
–
–
–
–

16 35 48
15 34 46
14 32 44
12 29 41
10 26 36
–
–
–
–
–
–
–

21 44 60
20 43 59
19 42 57
17 40 55
16 38 52
14 35 49
12 31 43
–
–
–
–
–

23 46 63
21 46 62
20 44 60
19 43 59
17 41 56
16 38 53
14 35 49
–
–
–
–
–

21 43 59
20 42 58
18 41 56
17 39 54
16 37 51
14 34 48
11 30 42
–
–
–
–
–

25 50 69
24 50 68
22 49 66
21 47 65
20 45 62
18 43 60
16 41 56
14 37 52
10 29 42
–
–
–

26 53 71
25 52 70
23 51 69
22 49 68
21 48 66
19 46 63
18 43 60
16 40 56
13 35 50
–
–
–

29 58 79
28 57 78
26 56 77
25 55 75
24 54 74
23 52 71
21 50 69
18 48 66
17 44 62
15 40 56
11 32 46
–

30 61 83
29 60 82
28 59 81
27 58 80
26 57 78
24 56 76
23 54 74
21 51 71
20 49 68
17 45 63
14 39 56
–

36 71 97
35 71 96
34 70 95
33 69 94
32 68 93
30 67 92
29 65 90
28 64 88
26 62 85
25 59 82
23 57 79
21 53 74

36 71 97
35 70 96
34 70 95
33 69 94
31 68 93
30 67 91
29 65 89
27 63 87
26 61 85
24 59 82
23 56 78
20 52 74

BAE 250

BAE 300

BAE 350

Mounting
Height to
Bottom of
Heater

60° Downward Hood For Blower Units ➁
Model

BAE 50 BAE 75

BAE 100 BAE 125 BAE 145 BAE 175 BAE 200

BAE 225

BAE 400
8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

XYZ

0 25 34
0 22 30
0 16 22
–
–
–
–
–
–
–
–
–
–

0 37 50
0 35 48
0 32 44
0 29 40
0 23 32
–
–
–
–
–
–
–
–

0 37 50
0 35 48
0 32 44
0 29 40
0 23 32
–
–
–
–
–
–
–
–

0 47 64
0 45 62
0 43 59
0 41 56
0 38 52
0 34 47
0 28 38
–
–
–
–
–
–

0 49 67
0 48 66
0 46 63
0 44 60
0 41 57
0 38 52
0 33 45
0 24 34
–
–
–
–
–

0 46 63
0 45 61
0 43 59
0 40 55
0 37 51
0 33 45
0 26 37
–
–
–
–
–
–

0 54 73
0 53 72
0 51 70
0 49 67
0 47 64
0 43 60
0 40 54
0 34 47
0 25 35
–
–
–
–

0 56 77
0 55 75
0 53 73
0 52 70
0 49 67
0 46 64
0 43 59
0 38 53
0 31 43
–
–
–
–

0 62 85
0 61 83
0 59 81
0 58 79
0 56 76
0 53 73
0 50 69
0 47 64
0 42 58
0 36 50
0 23 33
–
–

0 65 89
0 64 88
0 63 86
0 61 84
0 60 81
0 57 78
0 55 75
0 51 71
0 47 65
0 42 58
0 34 58
–
–

0 77 105
0 76 103
0 75 102
0 73 100
0 72 98
0 70 96
0 68 93
0 65 90
0 63 86
0 59 81
0 55 76
0 50 69
0 43 60

0 76 104
0 75 103
0 74 101
0 73 100
0 71 98
0 70 95
0 67 92
0 65 89
0 62 85
0 59 81
0 55 75
0 49 68
0 42 59

BAE 75 BAE 100 BAE 125 BAE 145 BAE 175 BAE 200 BAE 225 BAE 250
S
S
S
S
S
S
S
S

BAE 300
S

BAE 350
S

BAE 400
S

96
86
79
73
68
64
61
58
56
54
52
50
48
47

121
109
99
92
86
81
77
73
70
68
65
63
61
59

124
111
101
94
88
83
78
75
72
69
66
64
62
60

Mounting
Height to
Bottom of
Heater

➁

90° Downward Hood For Blower Units ➁

Model

BAE 50
S

8'
10'
12'
14'
16'
18'
20'
22'
24'
26'
28'
30'
32'
34'

24
22
20
18
17
–
–
–
–
–
–
–
–
–

38
34
31
29
27
25
24
23
–
–
–
–
–
–

41
36
33
31
29
27
26
25
–
–
–
–
–
–

55
50
45
42
39
37
35
34
32
31
30
–
–
–

60
54
49
45
42
40
38
36
35
33
32
31
–
–

58
52
47
44
41
39
37
35
33
32
31
30
–
–

71
64
58
54
50
47
45
43
41
40
38
37
36
35

75
67
61
57
53
50
48
46
44
42
40
39
38
37

86
77
71
65
61
58
55
52
50
48
46
45
43
42

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.

90° HOOD
H

S

S

17

Heater Parts from ACF Greenhouses

PERFORMANCE DATA - BLOWER UNIT HEATERS
Models With or Without Blower Enclosure ➀ ➁ ➂ ➃ ➄
Model
No.

BAE
50

BAE
75

BAE
100

BAE
125

BAE
145

BAE
175

BAE
200

BAE
225

BAE
250

BAE
300

BAE
350

BAE
400

Input
Output

50,000
40,500

75,000
60,750

100,000
80,000

125,000
100,000

145,000
116,000

175,000
141,750

200,000
160,000

225,000
182,250

250,000
200,000

300,000
240,000

350,000
280,000

400,000
320,000

Temp
Rise
(°F)

Airflow
(cfm)

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

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
40
45
50
55
60
65
70

938
833
750
682
625
577
536
1406
1250
1125
1023
938
865
804
1875
1667
1500
1364
1250
1154
1071
2315
2058
1852
1684
1543
1425
1323
2685
2387
2148
1953
1790
1652
1534
3281
2917
2625
2386
2188
2019
1875
3704
3292
2963
2694
2469
2279
2116
4219
3750
3375
3068
2813
2596
2411
4630
4115
3704
3367
3086
2849
2646
5556
4938
4444
4040
3704
3419
3175
6481
5761
5185
4714
4321
3989
3704
7407
6584
5926
5387
4938
4558
4233

635
560
505
460
420
390
360
545
490
440
400
370
–
–
315
280
250
230
210
–
–
390
345
310
285
260
240
220
635
565
510
465
425
390
365
430
385
350
315
290
270
250
490
440
395
360
330
305
280
645
575
520
470
430
400
370
710
630
570
520
475
440
405
830
735
665
605
555
510
475
970
865
775
705
650
600
555
945
840
755
685
630
580
540

1/4

1/4

1/4
–
–

C8

C87

C12
–
–

1/4

C93

–
–
1/3

–
–
C36

1/4

C97

1/4

C93

3/4
1/2
1/2
1/3

C38
C38
C98
C36

1/4

C36

1/2

C101

1/3

C24

1/4

C24

3/4
1/2
1/2
1/3
1/4

C16
C16
C104
C103
C103

1 1/2 C106
1 C107
3/4 C101
1/2

C101

1/3
1/4
2
1 1/2
1
3/4

C102
C102
C110
C105
C16
C16

1/2

C16

3
2
1 1/2
1

C111
C110
C105
C16

3/4

C16

5
3
3
2
1 1/2

C116
C116
C27
C108
C23

1

C23

5
5
3
2

C116
C118
C118
C108

1 1/2 C23

3.5
0
1.5
2.5
3.5
4.5
5
0.5
2
3
4
5
–
–
1
2.5
3.5
4.5
5
–
–
4.5
1.5
3
3.5
4.5
4
5
3.5
4.5
1
2.5
3.5
4.5
5
3
0
1.5
2.5
3.5
4.5
5
3
4.5
1
2
3
4
4.5
5
4.5
1
2
3
4
5
1.5
4
1.5
2.5
3.5
4.5
5
3
0.5
2.5
0.5
1.5
2.5
3.5
2.5
4.5
2
3.5
1.5
3.5
5
3
0
2.5
4
2
3.5
5

705
645
595
560
530
505
485
645
590
550
520
495
475
460
395
370
350
330
320
310
300
460
425
395
375
355
340
330
680
615
565
525
490
465
440
480
435
400
375
350
335
320
530
480
440
410
385
365
345
680
615
560
515
480
450
425
745
670
610
560
520
490
460
850
765
690
635
590
550
515
995
890
805
740
680
635
595
–
865
785
720
665
620
580

1/4

C8

1/4

C87

1/4

C90

1/4

C12

1/4

C94

1/4

C93

1/3

C36

1/4

C36

1/4

C97

3/4

C38

1/2

C38

1/3

C36

1/4

C36

3/4 C101
1/2 C101
1/3 C102
1/3 C24
1/4

C24

1
C16
3/4 C16
1/2 C16
1/2 C104
1/3 C103
1/4 C103
1 1/2 C106
1 C107
3/4 C101
1/2 C101
1/3
2
1 1/2
1

C102
C110
C105
C16

3/4

C16

1/2

C16

3
2

C111
C110

1 1/2 C105
1

C16

3/4

C16

5

C116

3
2

C27
C108

1 1/2 C23
1
–
5

C23
–
C116

3

C118

2

C108

1 1/2 C23

2
3.5
4
0
1.5
1.5
2
3.5
4.5
0
1
1.5
2
2.5
3
4
4.5
5
0.5
1
1.5
2.5
3.5
4
0.5
1
1.5
2
2.5
4
4.5
1
1.5
2.5
3
2
3
4
0.5
1.5
2
2.5
2
3.5
4.5
0.5
1
2
2.5
4
4
0
1
2
2.5
3.5
0.5
2.5
0.5
1.5
2.5
3
4
2.5
0
2
3.5
1
2
2.5
2
4
1
2.5
0.5
1.5
3
–
4.5
1.5
3
4.5
2
3.5

775
725
685
650
630
610
600
725
680
645
620
595
580
565
465
440
425
410
400
390
385
520
485
465
445
430
420
410
725
665
620
580
550
530
510
515
480
445
425
405
390
375
565
520
485
455
430
415
400
715
650
600
560
525
500
475
775
700
645
600
560
530
505
875
790
720
665
620
585
555
1015
915
835
770
715
670
630
–
890
810
750
695
655
620

1/4

C8

1/3

C90

1/4

C90

1/3

C95

1/4

C94

1/2
1/3

C98
C36

1/4

C36

1
3/4

C38
C38

1/2

C38

1/3

C36

1/4 C36
3/4 C101
1/2 C101
1/3 C102
1/4

C24

1

C16

3/4

C16

1/2

C16

1/3 C103
1/4 C103
1 1/2 C106
1 C107
3/4 C101
1/2 C101
2

C33

1 1/2 C105
1

C16

3/4

C16

1/2 C16
3 C111
2
C33
1 1/2 C105
1

C16

3/4

C16

5

C116

3
2
1 1/2
1 1/2
1
–
5

C27
C108
C106
C23
C23
–
C116

3

C118

2

C108

1 1/2 C23

1
2
2.5
3
3.5
4
4
2
3
3.5
4
4
4.5
4.5
5
1.5
2
2.5
3
3
3.5
1
2
2.5
3
3.5
3.5
4
2
3
3.5
4.5
0
0.5
1
1
2
3
3.5
4
0
0.5
1.5
2.5
3.5
4
4.5
0
0.5
3.5
5
4
0
1
1.5
2
4
1.5
3.5
0.5
1.5
2
3
1.5
3.5
1
2.5
0
1
1.5
1.5
3.5
0
2
3.5
0.5
2
–
4
1
2.5
4
1
2

845
800
765
740
725
710
700
800
755
725
705
685
670
660
520
505
490
475
470
460
455
570
545
525
505
495
480
475
765
710
670
635
605
585
570
555
515
490
465
450
435
425
600
555
525
500
475
460
445
745
685
635
600
565
540
520
800
735
680
635
600
575
550
900
815
750
695
655
620
590
1040
940
860
795
745
700
665
–
915
840
780
730
690
655

1/3

C1

1/4

C8

1/2
1/3

C92
C90

1/4

C90

1/3
1/4

C95
C95

1/4

C94

1/2
1/2
1/3

C38
C98
C36

1/4

C36

1

C38

3/4

C38

1/2

C38

1/3

C115

3/4

C101

1/2

C101

1/3

C102

1/4
1

C102
C16

3/4

C16

1/2

C16

1/3
2
1 1/2
1

C99
C108
C106
C107

3/4

C107

1/2

C101

2

C33

1/2

C105

1

C16

3/4

C16

1/2

C16

3

C111

2

C110

1 1/2 C105
1
3/4

C16
C16

5

C116

3

C116

2

C108

1 1/2
1 1/2
–
5
5
3

C106
C23
–
C116
C118
C118

2

C108

1 1/2 C23

4.5
0.5
1
1.5
2
2
2.5
0.5
1.5
2
2.5
2.5
3
3
4
4.5
0.5
0.5
1
1
1.5
4.5
0.5
1
1.5
1.5
2
2
1
2
3
3.5
4
4.5
4.5
0
1
1.5
2.5
3
3
3.5
0.5
1.5
2.5
3
3.5
4
4
2.5
4
3.5
4
4.5
0.5
1
3.5
0.5
2.5
0
0.5
1
1.5
1
3
0.5
2
3
0
1
1
3
4.5
1
2.5
3.5
1
–
3.5
0
1.5
3
4
1

910
870
845
825
810
805
800
865
830
800
775
760
750
735
575
560
545
535
525
520
515
620
595
575
560
550
540
530
805
755
715
685
660
640
625
590
555
530
510
490
480
470
635
590
560
535
515
500
490
775
715
670
635
605
580
560
830
765
710
670
640
610
590
–
840
775
725
685
655
625
1060
960
885
825
775
730
695
–
940
870
810
765
725
695

1/3

C1

1/4

C1

1/4

C8

1/2
1/2

C91
C92

1/3

C90

1/4

C90

1/2
1/3

C96
C95

1/4

C95

3/4

C38

1/2

C38

1/3

C36

1/4

C36

1

C38

3/4

C38

1/2

C38

1/3 C115
1 C107
3/4 C101
1/2 C101
1/3 C102
1 1/2 C105
1
C16
3/4

C16

1/2

C16

2 C108
1 1/2 C106
1

C107

3/4 C107
1/2
3
2
1 1/2

C101
C111
C33
C105

1

C109

3/4 C16
3/4 C16
–
–
3 C111
2
C33
1 1/2 C105
1
1

C109
C16

5

C116

3
3
2
1 1/2
1 1/2
–

C116
C27
C108
C106
C23
–

5

C116

3

C118

2 C108
1 1 /2 C23

4
4.5
4.5
5
0.5
0.5
0.5
4.5
0
0.5
1
1.5
1.5
1.5
3
3
3.5
3.5
4
4
4
3.5
4
4.5
0
0
0.5
0.5
0.5
1.5
2
2.5
3
3.5
3.5
4.5
0
0.5
1.5
1.5
2
2.5
3.5
1
1.5
2
2.5
3
3
2
3.5
3
3.5
4
4.5
0
2.5
4
1.5
5
5
0.5
1
–
2.5
4
1
2
5
0
0.5
2.5
4
0.5
2
3
0
–
3
4.5
1
2
3
0

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
Temp
Sheave
Model Rise Airflow RPM
HP
Drive Turns
No.
(°F)
(cfm)
No. Open

BAE
50

BAE
75

BAE
100

BAE
125

BAE
145

BAE
175

BAE
200

BAE
225

BAE
250

BAE
300

BAE
350

BAE
400

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
40
45
50
55
60
65
70

938
833
750
682
625
577
536
1406
1250
1125
1023
938
865
804
1875
1667
1500
1364
1250
1154
1071
2315
2058
1852
1684
1543
1425
1323
2685
2387
2148
1953
1790
1652
1534
3281
2917
2625
2386
2188
2019
1875
3704
3292
2693
2694
2469
2279
2116
4219
3750
3375
3068
2813
2596
2411
4630
4115
3704
3367
3086
2849
2646
5556
4938
4444
4040
3704
3419
3175
6481
5761
5185
4714
4321
3989
3704
7407
6584
5926
5387
4938
4558
4233

–
940
920
905
895
890
890
925
890
865
845
830
820
810
625
610
595
585
580
570
570
665
640
625
610
600
590
585
845
795
760
730
710
690
680
620
590
565
545
530
520
510
665
625
595
570
555
540
530
805
745
700
670
640
620
600
855
790
740
705
670
645
625
–
865
805
755
715
685
660
–
985
910
850
800
760
730
–
965
895
840
795
760
730

–

–

1/3

C1

1/4

C1

1/2

C91

1/3

C114

1/3

C90

1/2

C96

1/3

C95

1/4

C95

3/4

C38

1/2

C38

1/3

C37

1 1/2 C113
1
C38
3/4

C38

1/2

C38

1

C107

3/4

C107

3/4

C101

1/2

C101

1 1/2 C105
C16
1
3/4

C16

1/2

C16

2
C108
1 1/2 C106
1

C107

3/4

C107

3
2

C111
C33

1 1/2 C105
1
3/4
3/4
–
3
2

C109
C109
C16
–
C111
C33

1 1/2 C105
1
–
5

C109
–
C116

3

C116

2

C108

1 1/2 C106
–
–
C116
5
3
2

C118
C108

–
3.5
4
4
4
4
4
4
4
4.5
4.5
5
0
0.5
2
2
2.5
2.5
3
3
3
3
3.5
3.5
4
4
4
4.5
2.5
0.5
1.5
2
2
2.5
2.5
3.5
4.5
4.5
0.5
0.5
1
1
3
0
0.5
1.5
1.5
2
2.5
1
2.5
3.5
3
3.5
3.5
4
2
3.5
0.5
1.5
5
5
0
–
2
3.5
4.5
1.5
2
5
–
2
3.5
5
1
2
3
–
2.5
4
0
1
2
3

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

–
–
–
–
–
–
–
985
955
930
910
895
885
875
–
–
–
–
–
–
–
–
–
–
–
–
–
–
885
835
800
775
755
740
730
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
880
820
770
735
705
680
660
–
890
830
780
745
715
690
–
1005
935
875
830
790
755
–
990
925
870
825
795
765

–
–
–
–
–
–
–
3/4

–
–
–
–
–
–
–
C91

1/2

C91

1/3 C114
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1 1/2 C113
1
C38
3/4

C38

1/2

C38

–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
3
C111
2
C33
1 1/2 C100
1 1/2 C105
1

C109

3/4
–

C109
–

3

C111

2

C33

1 1/2

C105

–

–

5

C116

3

C116

2

C108

1 1/2 C106
–
–
C116
5
3

C116

3

C118

2

C108

–
–
–
–
–
–
–
3
3.5
3.5
4
4
4
4.5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1.5
0
0.5
1
1.5
1.5
2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1.5
3
4
0.5
4.5
4.5
5
–
1.5
2.5
4
0.5
1.5
2
–
1.5
3
4
0.5
1.5
2.5
–
2
3
4.5
0.5
1
2

Filters
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.
BAE50
BAE75
BAE100
BAE125
BAE145
BAE175
BAE200
BAE225
BAE250
BAE300
BAE350
BAE400

0.1" W.C.
0.2" W.C.
0.1" W.C.
0.1" W.C.
0.2" W.C.
0.1" W.C.
0.1" 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 BV models (w/o ductwork or nozzles and at Cfm’s yielding a 55° temperature rise), are the same as those listed on page 8 for
equivalent PV models.
Rpm setting shown in bold type indicate factory settings and standard drives.

19

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS – SAFETY DEVICES
Figure 13
Cross-section of Propeller Type Unit

ALUMINIZED STEEL
DRAFT DIVERTER

BLOCKED VENT
SAFETY SWITCH

DIVERTER RELIEF
OPENING
VENT PIPE
CONNECTION

HEAT EXCHANGER
DEFLECTOR BLADES

FAN & FAN GUARD

LIMIT CONTROL

MAIN BURNER

COMBUSTION AIR
INLETS

Limit Control (Overheat Switch)

the left outer side panel, held in place by screws at the rear
of the unit.
IMPORTANT NOTE:

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

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.
If these changes do not stop the spillage or the installer

20

Heater Parts from ACF Greenhouses

SERVICE INSTRUCTIONS – SAFETY DEVICES
Limit Control (Overheat Switch)

2. Check actual input to unit against rated input.

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:

3. Check to be sure motor is operating.

1. Make sure deflector blades are open and that there are not
any obstructions in the air inlet or discharge outlet.

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

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.

Figure 13a
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.

General Maintenance

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

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 abailable, 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 1A, 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 14
Manifold Adjustment, Natural Gas

Figure 15
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 18
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.

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.

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.

Figure 19
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.

1. If pilot does not light:
POSSIBLE CAUSES AND REMEDIES

Figure 17
Wavering Flame or Misalignment

GOOD

Standing Pilot Problem Symptoms and Diagnosis

1a. Check that manual gas control (knob or lever) on
combination gas control is in the pilot position.

BAD

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 18
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 1.
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
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.
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.
4e. If the above does not correct the condition, consult your
local gas company or local Modine representative.

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.

2f. Insufficient current signal
from flame sensor.

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.

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

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.
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

3. Burner shuts down before thermostat is satisfied.

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-ampls 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.

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

POSSIBLE REMEDY

4a. Faulty thermostat or
improper heat anticipator
setting.
4b. Defective ignition controller.
4c. Defective gas control.

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 28 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
Power Code Description — Propeller PAE Models ➀ ➁ ➂ ➃
Pwr.
Code

Electric
Power

01
02
04
05

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

PAE 30 PAE 50 PAE 75 PAE 100 PAE 125 PAE 145 PAE 175 PAE 200 PAE 225 PAE 250 PAE 300 PAE 350 PAE 400
Horsepower
1/40
1/40
–
–

1/40
1/40
–
–

1/30
1/15
–
–

1/30
1/15
–
–

1/15
1/15
–
–

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

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

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

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

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

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

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

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

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

Mtr.
Amps

1/40
1/30
1/15
1/6
1/3
3/4

1.0
2.1
2.4
2.8
5.4
8.8

115/60/1
Mtr.
Total
Rpm
Amps
1550
1050
1050
1075
1075
1075

Total
Watts

Mtr.
Amps

95
165
210
300
510
965

0.5
–
1.3
1.6
2.5
4.4

1.3
2.3
2.7
3.1
5.7
9.1

230/60/1
Mtr.
Total
Rpm Amps
1550
–
1050
1075
1075
1075

0.6
–
1.5
1.7
2.8
4.6

Total
Watts

Mtr.
Amps

105
–
205
265
480
965

–
–
–
–
1.9
3.7

200/60/3
Mtr.
Total
Rpm
Amps
–
–
–
–
1140
1140

Total
Watts

–
–
–
–
2.3
3.9

Mtr.
Amps

–
–
–
–
500
750

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

–
–
–
–
–
–
–
–
2.1/1.1 1140
3.4/1.7 1140

–
–
–
–
2.3/1.2
3.9/2.0

Total
Watts
–
–
–
–
500
1040

Power Code Description — Blower BAE Models ➁ ➂ ➃ ➄
Power
Code

Electric
Power

01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

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

BAE 50

BAE 75

BAE 100

BAE 125

BAE 145

BAE 175

BAE 200

BAE 300

BAE 350

BAE 400

BAE 225

BAE 250

HP

Drive

HP

Drive

HP

Drive

HP

Drive

HP

Drive

HP

Drive

HP

Drive

HP

Drive

HP Drive HP Drive

1/4

C87

1/4

C88

–

–

1/4

C97

1/3

C36

1/4

C24

1/3

C103

1/2

C101

3/4

C16

1

C16

1

1/4

C87

1/4

C88

–

–

1/4

C97

1/3

C36

1/4

C24

1/3

C103

1/2

C101

3/4

C16

1

C16

1

1/4

C87

1/4

C88

–

–

1/4

C97

1/3

C36

1/4

C24

1/3

C103

1/2

C101

3/4

C16

1

C16

1

1/4

C87

1/4

C88

–

–

1/4

C97

1/3

C36

1/4

C24

1/3

C103

1/2

C101

3/4

C16

1

C16

1

1/4

C8

1/4

C12

1/4

C94

1/4

C93

1/3

C115

1/4

C102

1/3

C99

1/2

C107

3/4

C109

1

C109 1 1/2 C23

–

–

1/4

C8

1/4

C12

1/4

C94

1/4

C93

1/3

C115

1/4

C102

1/3

C99

1/2

C107

3/4

C109

1

C109 1 1/2 C23

–

–

1/4

C8

1/4

C12

1/4

C94

1/4

C93

1/3

C115

1/4

C102

1/3

C99

1/2

C107

3/4

C109

1

C109 1 1/2 C23

–

–

1/4

C8

1/4

C12

1/4

C94

1/4

C93

1/3

C115

1/4

C102

1/3

C99

1/2

C107

3/4

C109

1

C109 1 1/2 C23

–

–

1/4

C1

1/4

C90

1/4

C95

1/4

C36

1/2

C98

1/3

C102

1/2

C104

3/4

C101

1

C16

1 1/2 C105 1 1/2 C106

–

–

1/4

C1

1/4

C90

1/4

C95

1/4

C36

1/2

C98

1/3

C102

1/2

C104

3/4

C101

1

C16

1 1/2 C105 1 1/2 C106

–

–

1/4

C1

1/4

C90

1/4

C95

1/4

C36

1/2

C98

1/3

C102

1/2

C104

3/4

C101

1

C16

1 1/2 C105 1 1/2 C106

2

C108

1/4

C1

1/4

C90

1/4

C95

1/4

C36

1/2

C98

1/3

C102

1/2

C104

3/4

C101

1

C16

1 1/2 C105 1 1/2 C106

2

C108

1/3

C1

1/3

C90

1/3

C95

1/3

C36

1/2

C38

1/3

C24

1/2

C16

3/4

C107

1

C109 1 1/2 C100

–

–

–

–

1/3

C1

1/3

C90

1/3

C95

1/3

C36

1/2

C38

1/3

C24

1/2

C16

3/4

C107

1

C109 1 1/2 C100

–

–

–

–

1/3

C1

1/3

C90

1/3

C95

1/3

C36

1/2

C38

1/3

C24

1/2

C16

3/4

C107

1

C109 1 1/2 C100

–

–

3

C116

1/3

C1

1/3

C90

1/3

C95

1/3

C36

1/2

C38

1/3

C24

1/2

C16

3/4

C107

1

C109 1 1/2 C100

–

–

3

C116

–

–

1/3

C114

1/2

C96

1/3

C37

3/4

C38

1/2

C101

3/4

C16

1

C107 1 1/2 C105

–

–

–

–

–

–

–

–

1/3

C114

1/2

C96

1/3

C37

3/4

C38

1/2

C101

3/4

C16

1

C107 1 1/2 C105

–

–

–

–

–

–

–

–

1/3

C114

1/2

C96

1/3

C37

3/4

C38

1/2

C101

3/4

C16

1

C107 1 1/2 C105

2

C110

2

C108

3

C118

–

–

1/3

C114

1/2

C96

1/3

C37

3/4

C38

1/2

C101

3/4

C16

1

C107 1 1/2 C105

2

C110

2

C108

3

C118

–

–

1/2

C91

–

–

1/2

C98

1

C38

3/4

C101

1

C16

1 1/2

C106 1 1/2 C100

–

–

–

–

–

–

–

–

1/2

C91

–

–

1/2

C98

1

C38

3/4

C101

1

C16

1 1/2

C106 1 1/2 C100

–

–

–

–

–

–

–

–

1/2

C91

–

–

1/2

C98

1

C38

3/4

C101

1

C16

1 1/2

C106 1 1/2 C100

2

C33

3

C27

5

C118

–

–

1/2

C91

–

–

1/2

C98

1

C38

3/4

C101

1

C16

1 1/2

C106 1 1/2 C100

2

C33

3

C27

5

C118

–

–

1/2

C92

–

–

1/2

C38

1 1/2 C113

3/4

C107 1 1/2

C105

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C92

–

–

1/2

C38

1 1/2 C113

3/4

C107 1 1/2

C105

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C92

–

–

1/2

C38

1 1/2 C113

3/4

C107 1 1/2

C105

2

C108

2

C110

3

C111

3

C116

5

C116

–

–

1/2

C92

–

–

1/2

C38

1 1/2 C113

3/4

C107 1 1/2

C105

2

C108

2

C110

3

C111

3

C116

5

C116

–

–

3/4

C91

–

–

3/4

C38

1/4

C36

1

C107

1/4

C103

1/4

C102

–

–

–

–

–

–

–

–

–

–

3/4

C91

–

–

3/4

C38

1/4

C36

1

C107

1/4

C103

1/4

C102

–

–

–

–

–

–

–

–

–

–

3/4

C91

–

–

3/4

C38

1/4

C36

1

C107

1/4

C103

1/4

C102

2

C33

–

–

5

C116

–

–

–

–

3/4

C91

–

–

3/4

C38

1/4

C36

1

C107

1/4

C103

1/4

C102

2

C33

–

–

5

C116

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/3

C102

–

–

3/4

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/3

C102

–

–

3/4

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/3

C102

3

C111

3/4

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/3

C102

3

C111

3/4

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C16

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1/2

C16

–

–

–

–

–

–

HP Drive HP Drive
C23 1 1/2 C23
C23 1 1/2 C23
C23 1 1/2 C23
C23 1 1/2 C23

➀ Shaded pole motors on models PAE 30 through PAE 125 – permanent split capacitor motors on models PAE 145 through PAE 400.
➁ Whenever 230V/1φ or 230V/3φ power is used, it is necessary to specify 230V/25V controls. Whenever 460/3φ power is used, it is necessary to specify 230V/24V
controls and in addition, a 460V/230V 75VA step-down transformer (by others) is required (if the power exhauster accessory is used, the step-down transformer by
others needs to be 250VA). On 230V/3φ or 460V/3φ systems, the motor starter coil voltage (motor starter by others) must be 230V. For 200V/3φ system, the motor
starter coil voltage (motor starter by others) must be 200V.

➂ BAE models – split phase motors 1/4-3/4 hp, capacitor start type motors 1-5 hp. 1/4-5 hp motors – 1725 rpm.
➃ Units with 460V/3φ power supply are not listed by C.G.A.
➄ 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
Motor Data and Total Unit Power Requirements – Blower BAE Models
Voltage
HP

Mtr.
Amps

115/60/1
230/60/1
200/60/3
Mtr.
Total Total Mtr. Mtr. Total Total Mtr. Mtr. Total Total
Rpm Amps Watts Amps Rpm Amps Watts Amps Rpm Amps Watts

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

5.4
5.0
8.5
11.0
13.4
15.0
–
–
–

1725
1725
1725
1725
1725
1725
–
–
–

5.7
5.3
8.8
11.3
13.7
15.3
–
–
–

390
410
600
870
1080
1490
–
–
–

2.7
2.5
3.8
5.5
6.7
7.5
–
–
–

1725
1725
1725
1725
1725
1725
–
–
–

2.9
2.7
4.0
5.7
6.9
7.7
–
–
–

390
410
600
870
1080
1490
–
–
–

1.6
1.8
2.5
3.2
4.0
5.6
6.8
10.6
14.3

1725
1725
1725
1725
1725
1725
1725
1725
1725

1.8
2.0
2.7
3.4
4.2
5.8
7.1
10.8
14.5

Mtr.
Amps

370 1.4/0.7
400 1.6/0.8
600 2.6/1.3
840 3.0/1.5
1100 3.8/1.9
1500 5.2/2.6
1950 6.6/3.3
3300 8.8/4.4
4400 13.2/6.6

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

Total
Watts

1725
1725
1725
1725
1725
1725
1725
1725
1725

370
400
600
840
1100
1500
1950
3300
4400

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

Blower Drive Numbers
Drive
No.
C1
C5
C16
C24
C27
C33
C36
C37
C38
C87
C88
C89
C90
C91
C92
C93
C94
C95
C96
C97
C98

Blower Sheave
Belt No.
Browning Pitch Dia.
A29
A32
A48
A56
A54
A50
A45
A40
A41
A38
A42
A52
A35
A33
A36
A57
A47
A42
A43
A53
A46

Motor Sheave
Max.
Pitch Dia. Bore

Bore

4
6
8
13
9
8
9
6
6
9
10
15
6
4
6
15
10
7
7
13
9

3/4
3/4
1
1
1
1
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

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

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

Drive
No.
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C110
C111
C112
C113
C114
C115
C116
C117
C118
C119

Blower Sheave
Belt No.
Browning Pitch Dia.
A47
A50
A50
A49
A54
A55
A54
A52
A45
A52
A43
A55
A52
A55
A42
A32
A41
A50
A55
A52
A56

8
8
9
9
12
12
10
9
6
9
5
10
8
10
8
4
6
7
11
9
11

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

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

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

RATING PLATE IDENTIFICATION
Model Number Designations

MODEL IDENTIFICATION PLATE
POWER CODE CONTROL CODE

SERIAL NUMBER

01121010692

PD150AE

01

01 12 101 10 95

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

145

A G 01 08

30

Serial Number Designations

MOTOR VENDOR CODE
01 Century
05 Universal
etc.

PAE

MODEL NUMBER

YEAR OF
MANUFACTURE
91 1991
92 1992
etc.

WEEK OF
MANUFACTURE
10 10th week of 1995
25 25th week of 1995
etc.

PAE - Propeller
Unit
BAE - Blower
Unit
Input
145 - 145,000 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 Type
08 - 115v/25v intermittent pilot
ignition, non-100% shut-off,
natural gas
09 - 230v/25v intermittent pilot
ignition, non-100% shut-off,
natural gas
etc.
Power Code
01 - Complete Power
Code descriptions
02 - are shown on
pages 18 and 19
of this manual
etc.
Ignition Type
C – Standing Pilot
G – Intermittent Pilot
K – Intermittent Pilot

26

Heater Parts from ACF Greenhouses

CONTROL OPTIONS
Propeller and Blower Unit Heaters – PAE and BAE Models ➀ ➁ ➂
Control
Thermostat
Service Voltage
Code No.
Voltage

Control System Description

Type of
Gas

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.

11
12
81
82

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

24V
24V
24V
24V

natural
natural
propane
propane

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.
Available on PAE/BAE models only.

25
26
83
84

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

24V
24V
24V
24V

natural
natural
propane
propane

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

30
31
85
86

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

24V
24V
24V
24V

natural
natural
propane
propane

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 BAE models only.

59
60
89
90

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

24V
24V
24V
24V

natural
natural
propane
propane

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. Available on PAE/BAE models only.

63
64
87
88

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

24V
24V
24V
24V

natural
natural
propane
propane

➀
➁

Models BAE 50 thru BAE 100 with two-stage or modulating gas controls require a Category II vent system.

➂

Whenever 230V/1φ or 230V/3φ power is used, it is necessary to specify 230V/25V controls. Whenever 460V/3φ power is used, it is necessary to specify 230V/25V controls and in addition, a
460V/230V/75VA step-down transformer (by others) is required (if the power exhauster accessory is used, the step-down transformer by others needs to be 250VA). On 230V or 460V/3φ systems,
the motor starter coil voltage (motor starter by others) must be 230V. For 200V/3φ systems, the motor starter coil voltage (motor starter by others) must be 200V.

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.

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 08 and 09, the ignition control will
attempt to light the pilot once the system is turned on. If the pilot is
not sensed for any reason, the spark will continue indefinitely until
the pilot flame is sensed or until power is interrupted to the system.

On systems utilizing control codes 30, 31, 85 or 86 the sequence is
similar, except that 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.

Service Checklist
Date Intalled

Serviced by &

Serial No.

Date Serviced

Model No.

Serviced by &

Power Code

Date Serviced

Control Code

27

Heater Parts from ACF Greenhouses

For local parts and service assistance, contact one of the following:
Sales
Representatives
ALABAMA

Watts Engr. Sales
Birmingham, AL
(205) 871-4673
ALASKA

Proctor Sales, Inc.
Anchorage, AK
(907) 562-2608
ARIZONA

Hydronic & Steam
South Bend, IN
(219) 234-6005
IOWA

Enquip/Peterson
Des Moines, IA
(515) 266-0844
KANSAS

Jorban Riscoe Assoc.
Kansas City, KS
(913) 722-1244

NEW HAMPSHIRE

Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000
NEW JERSEY

C.R. Hutcheon, Inc.
Bloomfield, NJ
(201) 743-9770
NEW MEXICO

The Socha Company
Albuquerque, NM
(505) 839-0103

B.J. Terroni
Bensalem, PA
(215) 639-3600
Charles W. Stanger
Allison Park, PA
(412) 492-9220
Hase, Inc.
Schuylkill Haven, PA
(717) 385-3682
RHODE ISLAND

Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000

Climatec, Inc.
Phoenix, AZ
(602) 944-3330

Jorban Riscoe Assoc.
Wichita, KS
(316) 687-3277

ARKANSAS

KENTUCKY

John Lynn Co., Inc.
North Little Rock, AR
(501) 771-4343

Climate Conditioning
Louisville, KY
(502) 267-4696

CALIFORNIA

LOUISIANA

A/C Specialties
LaHabra, CA 90631
(714) 738-7711

Schully Strawn
Metairie, LA
(504) 831-0000

R.P. Fedder Corp.
Rochester, NY
(716) 288-1600

Envir. Indus. Prod.
Mountain View, CA
(415) 964-6161

Reed Mechanical
Shreveport, LA
(318) 865-3515

Wales-Darby, Inc.
Ronkonkoma, NY
(516) 585-6800

COLORADO

MAINE

McCoy Sales Corp.
Englewood, CO
(303) 762-8012

Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000

Fedder Associates
Syracuse, NY
(315) 437-8451

Mech. & Indus. Sales
Gallaway, TN
(901) 867-0435

NORTH CAROLINA

CONNECTICUT

MARYLAND

E.W. Leonard, Inc.
Moodus, CT
(203) 873-8691

Marva Sales, Inc.
Baltimore, MD 21217
(410) 945-0171

Charles F. Sexton Co.
Knoxville, TN
(423) 588-9691

DISTRICT OF COLUMBIA

MASSACHUSETTS

Marva Sales, Inc.
Leesburg, VA
(540) 338-2009

Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000

FLORIDA

T.H. Brooks
Apopka, FL
(407) 886-8405
T.H. Brooks
Tampa, FL
(813) 622-7000

Air One Co.
Oak Park, MI
(810) 398-8700

Aeromechanical, Inc.
Gulf Breeze, FL
(904) 932-2011

Witheridge Co.
Saginaw, MI
(517) 792-2598

Power/Conditioning,
Tampa, FL
(813) 622-7000

MINNESOTA

GEORGIA

Herring Company, Inc.
Norcross, GA
(770) 416-0044
IDAHO

A.A. Maycock
Salt Lake City, UT
(801) 364-1926
ILLINOIS

John A. Sandberg Co.
East Moline, IL
(309) 796-2371
Fleming Hanson Sales
Downers Grove, IL
(708) 829-4060
Burden-Cooper, Inc.
Rockford, IL
(815) 633-6555
INDIANA

Jay Kress Assoc.
Indianapolis, IN
(317) 251-2498

NEW YORK

Emerson-Swan, Inc.
East Greenbush, NY
(518) 477-2693
Edward H. Cox & Co.
Hamburg, NY
(716) 648-6321

L.R. Gorrell Co.
Asheville, NC
(704) 253-1856
L.R. Gorrell Co.
Charlotte, NC
(704) 333-8436

SOUTH CAROLINA

L.R. Gorrell Co.
Greenville, SC
(864) 297-7810
L.R. Gorrell Co.
Charleston, SC 29418
(803) 824-9449
SOUTH DAKOTA

Walters-Climate, Inc.
Minneapolis, MN
(612) 544-8626
TENNESSEE

Aircon Sales Agency
Nashville, TN
(615) 327-4640
TEXAS

MICHIGAN

L.R. Gorrell Co.
Greensboro, NC
(919)373-1281

SWK. Inc.
Dallas, TX
(214) 351-9985

Raley Brothers
Grand Rapids, MI
(616) 742-0150

L.R. Gorrell Co.
Raleigh, NC
(910) 821-1161

Barnhart-Taylor
El Paso, TX
(915) 533-1231

NORTH DAKOTA

Paschal-Harper, Inc.
Lubbock, TX
(210) 494-7593

Walters-Climate, Inc.
Minneapolis, MN
(612) 544-8626

Walters-Climate, Inc.
Minneapolis, MN
(612) 544-8626
OHIO

R.G. Anderson Co.,
Cincinnati, OH
(513) 527-2300

Paschal-Harper, Inc.
San Antonio, TX
(210) 224-1661
UTAH

A.A. Maycock Co.
Salt Lake City, UT
(801) 364-1926

MISSISSIPPI

Mussun Sales, Inc.
Cleveland, OH
(216) 431-5088

Ward Mechanical
Jackson, MS
(601) 956-3002

Mussun Sales, Inc.
Columbus, OH
(614) 294-4822

E.W. Leonard, Inc.
Moodus, CT
(203) 873-8691

MISSOURI

Stoermer Equipment
Dayton, OH
(513) 275-5007

VIRGINIA

Evans, Maille
St. Louis, MO
(314) 822-1023
MONTANA

John Klaboe
Butte, MT
(406) 782-6366
NEBRASKA

B.G. Peterson Co.
Omaha, NE
(402) 344-4311
NEVADA

John A. Sandberg Co.
Las Vegas, NV
(702) 367-1657

Toledo Thermal
Toledo, OH
(419) 475-7100
OKLAHOMA

A.M.E., Inc.
Oklahoma City, OK
(405) 843-9788
OREGON

Proctor Sales, Inc.
Portland, OR
(503) 639-1557
PENNSYLVANIA

H & H Associates
Mechanicsburg, PA
(717) 761-4370

WYOMING

MASSACHUSETTS

John Klaboe
Butte, MT
(406) 782-6366

Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000

McCoy Sales Corp.
Englewood, CO
(303) 762-8012

MICHIGAN

A.A. Maycock Co.
Salt Lake City, UT
(801) 364-1926

Canadian
Sales Outlets
ALBERTA

Kehoe Equipment Co.
Edmonton, Alberta
(403) 420-0040
Summit Engineering Sales
Calgary, Alberta
(403) 250-9780
BRITISH COLUMBIA

Dierks Equipment Sales
Vancouver, BC
(604) 872-7891
MANITOBA

H.F. Clarke, Ltd.
Winnipeg, Manitoba
(204) 694-8637
NOVA SCOTIA

MacLeod and Grant, Ltd.
Stellarton, NS
(902) 752-5532

WASHINGTON

Proctor Sales, Inc.
Lynnwood, WA
(800) 562-1321
Suntoya PSI
Spokane, WA
(509) 534-1516
WEST VIRGINIA

H.P. Heating Co., Inc.
Charleston, WV
(304) 345-9916
WISCONSIN

C & S Hydronics, Inc.
Delafield, WI
(414) 646-6325

Raley Brothers
Grand Rapids, MI
(616) 452-6043
MINNESOTA

Walters Climate, Inc.
Minneapolis, MN
(612) 544-8626
NEVADA

Best Supply, Inc.
Las Vegas, NV
(702) 474-4475
NEW JERSEY

C.R. Hutcheon, Inc.
Bloomfield, NJ
(201) 743-9770
NEW YORK

ABCO Supply
Hicksville, NY
(516) 938-8400
H.C. Oswald
New York, NY
(212) 722-7000
OHIO

ONTARIO

Wolff Bros. Sply, Inc.
Medina, OH
(216) 725-3451

Michael Stuart Company, Ltd.
Concord, Ontario
(905) 738-6008

Toledo Thermal Equip. Co.
Toledo, OH
(419) 475-7100

G.P. McEachern, Ltd.
Thunder Bay, Ontario
(807) 623-4951

PENNSYLVANIA

QUEBEC

B.J. Terroni Co., Inc.
Bensalem, PA
(215) 639-3600

G. Mitchell Heating & A/C
St. Laurent, Quebec
(514) 332-8929

Myers Distributing Co., Inc.
Duquesne, PA
(412) 469-1010

SASKATCHEWAN

TENNESSEE

Cypress Sales
Regina, Saskatchewan
(306) 757-5656

A. T. Distributors
Memphis, TN
(901) 278-7211

Cypress Sales
Saskatoon, Saskatchewan
(306) 242-3333

TEXAS

VERMONT

L.A. Prillaman Co.
Richmond, VA
(804) 798-1455

Air One Company
Oak Park, MI
(313) 398-8700

K. Sales, Inc.
Dallas, TX
(214) 484-8885
UTAH

Parts Wholesalers
CONNECTICUT

E.W. Leonard, Inc.
Moodus, CT
(203) 873-8691
COLORADO

McCoy Sales Corp.
Englewood, CO
(303) 762-8012
GEORGIA

Herring Company, Inc.
Norcross, GA
(404) 416-0044
ILLINOIS

Heinlein Supply.
Chicago, IL
(312) 774-8616
MARYLAND

Marva Sales
Baltimore, MD
(410) 945-0171

A.A. Maycock Company
Salt Lake City, UT
(801) 364-1926
VIRGINIA

L.A. Prillaman Co., Inc.
Ashland, VA
(804) 798-1455
WASHINGTON

Proctor Sales, Inc.
Lynnwood, WA
(206) 774-1441
WASHINGTON, DC

Marva Sales
Lovettsville, VA
(540) 882-3640
WISCONSIN

C & S Hydronics, Inc.
Delafield, WI
(414) 646-6325

For service contact your local qualified installation and service contractor or appropriate utility company.

Heating Division
Modine Manufacturing Company
1221 Magnolia Avenue
Buena Vista, VA 24416
Telephone: 540-261-2166
Fax: 540-261-1563
© Modine Manufacturing Company 1996

6/96 - 30M Litho in USA

Heater Parts from ACF Greenhouses



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