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.
WARNING
Im pr oper i ns tallation , adjust me nt, al te ration, service or
maintenance can cause property damage, injury or death, and
co uld cau se e xposu re t o su bst an ces whi ch h ave 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.
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
THIS MANUAL IS T HE PROPERTY O F THE OWNER.
PL EA SE BE SURE TO L EAVE I T WITH THE OW NE R
WHEN YOU LEAVE THE JOB.
To prevent premature heat exchanger failure
do not locate ANY gas-fired units in areas
wher e chlo rinated, halogenate d or acid
vapors are present in the atmosphere.
Inspection on Arrival
1.In sp ect un it upo n arr iv al. In case of damage, repor t
immediately to transportation company and your local
Modine sales representative.
2.
Check rating plate on unit to verify that power supply meets
available electric power at the point of installation.
3.Inspect unit received for conformance with description of
product ordered (including specifications where applicable).
Heater Parts from ACF Greenhouses
INSTALLATION
SPECIAL PRECAUTIONS
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS IN THIS
MANUAL MUST BE FOLLOWED TO PROVIDE SAFE, EFFICIENT
AND TROUBLE-FREE OPERATION. IN ADDITION, PARTICULAR
CARE MUST BE EXERCISED REGARDING THE SPECIAL
PRECAUTIONS LISTED BELOW. FAILURE TO PROPERLY
ADDRESS THESE CRITICAL AREAS COULD RESULT IN
PROPERTY DAMAGE OR LOSS, PERSONAL INJURY, OR DEATH.
1. Disconnect power supply before making wiring connections to
prevent electrical shock and equipment damage. All units must be
wired strictly in accordance with wiring diagram furnished with the
unit.
2. Turn off all gas before installing unit heaters.
3. Gas pressure to unit heater controls must never exceed 14” W.C.
(1/2 psi).
When leak testing the gas supply piping system, the unit and its
combination gas control must be isolated during any pressure
testing in excess of 14’ W.C. (1/2 psi).
The unit should be isolated from the gas supply piping system by
closing its field installed manual shut-off valve.
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.
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.
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.
20.
Be sure no obstructions block air intake and discharge of unit heater.
21. Do not attach duct work, air filters, or polytubes to any propeller
(PAE) model unit heaters.
22. In aircraft hangars, keep the bottom of the unit at least 10’ from the
highest surface of the wings or engine enclosure of the highest
aircraft housed in the hangar and in accordance with the
requirements of the enforcing authority and/or NFPA No. 409 –
Latest Edition .
23. In garages or other sections of aircraft hangars such as offices and
shops which communicate with areas used for servicing or storage,
keep the bottom of the unit at least 7’ above the floor. In public
garages, the unit must be installed in accordance with the Standard
for Parking Structures NFPA #88A and the Standard for Repair
Garages NFPA #88B. In Canada, installation of unit heaters in
airplane hangars must be in accordance with the requirements of
the enforcing authority, and in public garages in accordance with
the current CAN/CGA-B149 codes.
24. Consult piping, electrical, and venting instructions in this manual
before final installation.
25. All literature shipped with your unit should be kept for future use for
servicing or service diagnosis. Do not discard any literature shipped
with your unit.
26. Gas-fired heating equipment which has been improperly vented, or
which experiences a blocked vent condition may have the flue
gases accidentally spilled into the heating space. See page 20 for
specific information about the blocked vent safety switch supplied
on the unit.
27.
When servicing or repairing this equipment, use only Modine
approved service replacement parts. A complete replacement parts
list may be obtained by contacting Modine Manufacturing Company.
Refer to the rating plate on the unit for complete unit model number,
serial number and company address. Any substitution of parts or
controls not approved by Modine will be at owners risk.
Figure 1A
Hinged Bottom for Burner Service
*(See Dimension "C" Table 6, page 12)
*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
Units must not be installed in potentially explosive, flammable
or corrosive atmosphere.
To prevent premature heat exchanger failure do not locate
ANY gas-fired unit in areas where chlorinated, halogenated
or acid vapors are present in the atmosphere.
In locating units, consider general space-heating requirements,
availability of gas, and proximity to vent locations. Unit heaters should
be located so heated air streams wipe exposed walls without blowing
directly against them. In multiple unit installations, arrange units so that
each supports the air stream from another, setting up circulatory air
movement in the area, but maintain separation between units so
discharge from one unit will not be directed into the inlet of another. In
buildings exposed to prevailing winds, a large portion of the heated air
should be directed along the windward wall. Avoid interference of air
streams as much as possible.
Mounting height (measured from bottom of unit) at which unit heaters
are installed is critical. Maximum mounting heights are listed in Table 7
on page 18. Alternate mounting heights for units with deflector hoods or
nozzles are shown on pages 14,16 and 17. The maximum mounting
height for any unit is that height above which the unit will not deliver
heated air to the floor.The maximum mounting heights must not be
exceeded in order to assure maximum comfort.
Modine unit heaters are designed for use in heating applications with
ambient temperatures between 32° F and 90° F. If an application exists
where ambient temperatures can be expected to fall outside of this
range, contact factory for recommendations.
Combustion Air Requirements
Units installed in tightly sealed buildings or confined spaces should be
provided with two permanent openings, one near the top of the
enclosure and one near the bottom. Each opening should have a free
area of not less than one square inch per 1,000 BTU per hour of the
total input rating of all units in the enclosure, freely communicating with
interior areas having, in turn, adequate infiltration from the outside.
Unit Suspension
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.
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.
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
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.
exchanger tubes, unit must be supported in a vertical position, with
suspension hangers “UP.” Check with a level. This is important to the
operation and life of unit.
Note
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.
o assure that flames are directed into the center of heat
T
: Pipe hanger adapter kits, as shown in Figure 2, are available as
ADJUST MOUNTING
BRACKETS
SUSPENSION WITH PIPE
ADAPTER KIT
3
Heater Parts from ACF Greenhouses
INSTALLATION
!
CAUTION
Gas Unit H eat ers m ust b e ven ted – d o not o per ate
unvented.
A built-in draft hood (diverter) is provided – additional
ext ern al draf t hoo ds (d iver ter s) are not requ ire d 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.
NOTE:
V
1. Using Table 1, determine the venting system category of the unit to be
2. Using Table 2, determine the venting requirements for the category
3.
4. Limit length of horizontal runs to 75% of vertical height. Install with a
5. Avoid venting through unheated space when possible. When venting
6. Keep single wall vent pipe at least 6 inches from combustible material
7. Where the vent passes through a combustible floor or roof, a metal
8.
9. Use a vent terminal to reduce downdrafts and moisture in vent. A vent
ent
v
A
unit or the vent connector to the outside atmosphere. A
is the vertical passageway used to convey flue gases from the
the pipe which connects the unit to a vent or chimney.
ent connector
v
enting Instructions
installed.
determined above. The installation of a Category II unit must conform to
these requirements (detailed in following sections) in addition to those
listed below.
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.
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.
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.
(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.
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.
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).
terminal that is very open will avoid spillage at unit’s diverter relief
opening and tripping of the blocked vent safety switch.
Positive vent pressureVent must be liquid and
Condensinggastight. Condensate
IV
Check vent system to see that combustion products are being vented
10.
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
Requirements
must be drained.
Figure 3
Unit Heater Venting
10' MIN.
TO WALL OR ADJOINING BUILDING
APPROVED
TERMINAL
2'
*
MIN.
ROOF FLASHING
USE THIMBLE
THROUGH CEILING
1/4"
UNIT
1'0"
SLOPE 1/4" TO
THE FOOT
*SIZE ACCORDING TO EXPECTED SNOW DEPTH.
DRIP LEG WITH
CLEANOUT CAP
4
Heater Parts from ACF Greenhouses
GAS
SUPPLY LINE
GAS
SUPPLY LINE
GROUND
JOINT
UNION
MANUAL
SHUT-OFF
VALVE
3"
MIN.
SEDIMENT
TRAP
PLUGGED
1/8" NPT TEST
GAGE CONNECTION
TO
CONTROLS
!
INSTALLATION
Piping
CAUTION
Gas pressure to unit heater controls must never exceed 14"
W.C. (1/2 psi).
When leak testing the gas supply piping system, the
appliance and its combination gas control must be isolated
during any pressure testing in excess of 14" W.C. (1/2 psi).
The appliance should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.
1. Installation of piping must be in accordance with local
codes, and ANSI Z223.1, “National Fuel Gas Code,” or
CAN/CGA-B149 in Canada.
2. Piping to units should conform with local and national
requirements for type and volume and gas handled, and
pressure drop allowed in the line. Refer to Table 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.
3. After threading and reaming the ends, inspect piping and
remove loose dirt and chips.
D
o not use flexible connectors
4. Support piping so that no strains are imposed on unit or
controls.
5. Use two wrenches when connecting piping to unit controls.
6. Provide a sediment trap before each unit and in the line
where low spots cannot be avoided. (See Figure 4).
7. Take-off to unit should come from top or side of main to
avoid trapping condensate.
8.
Piping, subject to wide temperature variations, should be
insulated.
9. Pitch piping up toward unit at least 1/4” per 15’ of horizontal
run.
10. Compounds used on threaded joints of gas piping must be
resistant to action of liquefied petroleum gases.
11. Purge air before lighting unit by disconnecting pilot tubing at
.
combination gas control.
I
n no case should line be purged
into heat exchanger.
12. After installation, check system for gas leaks, using a soap
solution.
13. Install a ground joint union and a manual shut off valve
immediately upstream of the unit including a 1/8” NPT
plugged tapping accessible for test gage connection. (See
Figure 4).
14. Allow at least 5 feet of piping between any high pressure
regulator and unit control string.
15. 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.
Disconnect power supply before making wiring connections
to prevent electrical shock and equipment damage. ALL
UNITS MUST BE WIRED STRICTLY IN ACCORDANCE
WITH WIRING DIAGRAM FURNISHED WITH UNIT.
ANY WIRING DIFFERENT FROM WIRING DIAGRAM MAY
BE HAZARDOUS TO PERSONS AND PROPERTY.
Any damage to or failure of Modine units caused by incorrect
wiring of the units is not covered by MODINE’S STANDARD
WARRANTY (see Back Cover).
All field installed wiring must be done in accordance with the
National Electrical Code ANSI/NFPA 70 – Latest Edition or
Canadian Electrical Code CSA C22.1 Part 1 or local codes. Unit
must be electrically grounded according to these codes. See
wiring diagram shipped with unit. For optional wiring diagrams
see Bulletin 6-443.
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.
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.
I
nstallation of Blower Models (BAE UNITS)
CAUTION
Proper air flow and distribution, across the heat exchanger
must be provided to prevent early failure of the blower unit
heater.
Attachment of Field Installed Ductwork, Blower
dels (BAE) Models Only
CAUTION
Do not attempt to attach ductwork of any kind to propeller
PAE models.
Burned-out heat exchanger as well as shorter equipment life will
result from not providing uniform air distribution.
When installing heater always follow good duct design practices
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.
P
rovide uniform air distribution over the heat exchanger.
1.
Use turning vanes where required. See figures below.
2. Provide removable access panels in the ductwork on the
downstream side of the unit heater. These openings should
be large enough to view smoke or reflect light inside the
casing to indicate leaks in the heat exchanger and to check
for hot spots on exchanger due to poor air distribution or
lack of sufficient air.
3.
If ductwork is connected to the rear of the unit use Modine
blower enclosure kit or if using field designed enclosure maintain
dimensions of blower enclosure as shown on page 12.
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.
Recommended Installations
SIDE VIEW
B
6
BAFFLE
SIDE VIEWSIDE VIEWTOP VIEW
Dimension “B” Should Never
Be Less than 1/2 of “A”
BA
B
SIDE VIEW
C
12"
MIN.
A
TOP VIEW
FED
12"
MIN.
A
TURNING
VANES
Heater Parts from ACF Greenhouses
INSTALLATION
Installation of Blower Models (BAE UNITS)
Determining Blower Speed
The drive assembly and motor on all gas-fired blower unit
heaters are factory assembled. The adjustable motor sheave
has been pre-set to permit operation of this unit under average
conditions of air flow and without any external static pressure.
The motor sheave should be adjusted as required when the unit
is to be operated at other than average air flows and/or with
external static pressures. Adjustment must always be within the
performance range shown on pages 18 and 19 and the
temperature rise range shown on the unit’s rating plate.
To determine the proper blower speed and motor sheave turns
open, the conditions under which the unit is to operate must be
known. If the blower unit is to be used without duct work,
nozzles or filters, the only criteria for determining the motor
sheave turns open and blower speed is the amount of air to be
delivered. The performance tables for blower models are shown
on pages 18 and 19. As an example, a model 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.
T
o Install (Figure 5):
1. Remove and discard the motor tie down strap and the
shipping block beneath the belt tension adjusting screw (Not
used on all models.)
Figure 5
Blower Model Installation
MOTOR MOUNTING
BRACKET
BLOWER
SHEAVE
2. Adjust motor adjusting screw for a belt deflection of
approximately 3/4" with five pounds of force applied midway
between the sheaves (refer to Figure 6a). Since the belt
tension will decrease dramatically after an initial run-in
period, it is necessary to periodically re-check the tension.
Excessive tension will cause bearing wear and noise.
3. The blower bearings are lubricated for life; however, before
initial unit operation the blower shaft should be lubricated at
the bearings with SAE 20 oil. This will reduce initial friction
and start the plastic lubricant flowing.
4. Make electrical connections according to the wiring
diagram.
5. Check rotation of the blower. Motor should be in clockwise
rotation when facing motor pulley. If rotation is incorrect,
correction should be made by interchanging wiring within
the motor. See wiring diagram on the motor.
6. The actual current draw of the motor should be determined.
Under no condition should the current draw exceed that
shown on the motor rating plate.
I
t is the installers responsibility to adjust the motor sheave to
7.
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.
MOTOR SHEAVE
(MOVEABLE FACE TO OUTSIDE)
OIL CUPS
UP
MOTOR
ADJUSTMENT
SCREW
TIE DOWN STRAP
& BLOCK FOR
SHIPPING ONLY
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:
NOTE: Do not fire unit until blower adjustment has been made
or unit may cycle on limit (overheat) control.
Shut-off power before making blower speed adjustments.
1.
Refer to Determining Blower Speed on page 7 and to Blower
Drive Selection on pages 18 and 19 to determine proper
blower RPM.
2. Loosen belt and take belt off of motor sheave.
3. Loosen set screw on outer side of adjustable motor sheave
(see Figure 6).
4. To reduce the speed of the blower, turn outer side of motor
sheave counterclockwise.
Figure 6
Motor Sheave Adjustment
5. To increase the speed of the blower, turn outer side of motor
sheave clockwise.
6. Retighten motor sheave set screw, replace belt and retighten
motor base. Adjust motor adjusting screw such that there is
3/4” belt deflection when pressed with 5 pounds of force
midway between the blower and motor sheaves (see Figure
6a). Since the belt tension will decrease dramatically after an
initial run-in period, it is necessary to periodically re-check
the tension to assure continual proper belt adjustment.
7. Check to make certain motor sheave and blower sheave are
aligned. Re-align if necessary.
8. Re-check blower speed after adjustment.
9. Check motor amps. Do not exceed amps shown on motor
nameplate. Slow blower if necessary.
10.Check air temperature rise across unit. Check temperature
rise against values shown in Performance Tables on
pages18 and19 to assure actual desired air flow is being
achieved.
11.If adjustments are required, recheck motor amps after final
blower speed adjustment.
Figure 6a
Belt Tension Adjustment
TOWARD MOTOR
SET SCREW
ADJUSTABLE HALF
OF SHEAVE
3/4" DEFLECTION
WITH 5# FORCE
8
Heater Parts from ACF Greenhouses
OPERATION
CAUTION
Start-up and adjustment procedures should be performed by
a qualified serviceman.
Check the gas inlet pressure at the unit upstream of the
combination gas control. The inlet pressure should be 6"-7"
W.C. on natural gas or 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
pe rfo rmed as des cri be d in A NSI Z22 3. 1-l atest edi tion
“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.
L
ighting Instructions (also on unit)
For Units with Standing Pilot
1. Set thermostat to lowest setting. Move gas control knob (or
lever) to off and wait 5 minutes.
2. Move gas control knob to PILOT (or move gas control lever
to SET) and depress reset button while lighting the pilot and
hold for 1 minute after pilot is lit.
3. Move gas control knob (or lever) to ON.
4. Set thermostat to desired setting.
F
or Units with Intermittent Pilot
1. Set thermostat to lowest setting. Move gas control knob (or
lever) to off and wait 5 minutes.
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).
S
hut Down Instructions
Turn off power and close manual gas valve.
A
fter 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.
Figure 7
Correct Pilot Flame
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.
P
ilot Flame Adjustment
Figure 8
N
Typical combination gas control
GAS CONTROL KNOB
PRESSURE REGULATOR
ADJUSTMENT SCREW
(UNDER CAP SCREW)
INLET
PRESSURE TAP
INLET
RESET BUTTON
PILOT ADJUSTMENT
SCREW
atural
ELECTRICAL
CONNECTION
TERMINALS
OUTLET
PRESSURE
TAP
OUTLET
PILOT TUBING
CONNECTION
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.
P
ropane 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.
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.
n optimum flame will show a slightly yellow tip
A
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
checked with unit in operation when making final adjustments.
I
nput Adjustments
The gas pressure regulator (part of the combination gas control)
is adjusted at the factory for average gas conditions. It is
important that gas be supplied to the heater in accordance with
the input rating stamped on the serial plate. Actual input 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.
Input can be determined by the meter-timing method provided
other gas equipment connected to the meter is off during the
test. If this is not possible, use the pressure method.
(
A) Meter Timing Method
1. Shut off all other gas-burning equipment, including other
pilot lights served by the gas meter.
2. Start the heater and determine the number of seconds it
takes to consume 1 cu. ft. of gas. Two basic formulas are
useful:
– Inlet pressure and manifold pressure must be
F1 = 3600 C/T
F2 = F1/C
where:
F1 = input to heater, Btuh.
F2 = input to heater, cu. ft. per hr.
C = heating value of gas, Btu per cu. ft.
T = time to consume 1 cu. ft. of gas in sec.
The heating value of gas may be determined from the local
utility or gas dealer.
These are representative values:
GAS
Natural1000-1150
Propane2500
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
c
ounter-clockwise
in a
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.
Btu per cu. ft.
direction.
(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.
2. Locate combination gas control.
3. Move gas control knob (or lever) to off.
4. Remove the 1/8" pipe plug in outlet pressure tap in
combination gas control (see Figure 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.
10
Heater Parts from ACF Greenhouses
CHECKING INPUT RATE
Figure 9
“U” TUBE
MANOMETER
LIGHTING
INSTRUCTION &
RATING PLATE
GAS
DESIGNATION
PLATE
PILOT TUBING
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.)
*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.
HCR-18 or BCR-18HBR or BBR-12 or 11
①
18
N
77154710
Gal/Hr. Propane–.33
Orifice Drill Size3752
CFH47.620.0
Orifice Drill Size3045
CFH71.430.0
Orifice Drill Size2037
CFH95.240.0
Orifice Drill Size3045
CFH119.050.0
Orifice Drill Size2542
CFH138.158.0
Orifice Drill Size3045
CFH166.770.0
Orifice Drill Size2743
CFH190.580.0
Orifice Drill Size2340
CFH214.390.0
Orifice Drill Size2843
CFH238.1100.0
Orifice Drill Size2542
CFH285.7120.0
Orifice Drill Size2643
CFH333.3140.0
Orifice Drill Size2239
CFH381.0160.0
Orifice Drill Size2340
L
1O
①
P
Natural Propane
Figure 10
Dials of Typical Gas Meter
11
Heater Parts from ACF Greenhouses
DIMENSIONS/PERFORMANCE – PAE
A
H
D (OPENING)
BB
E
AA
B
K
W
X
F
C
K
G
L - Approx
MIN. DISTANCE
TO WALL IS L + 6"
J VENT PIPE
EE
(MIN. DISTANCE TO WALL)
L
LL
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.
Clearance at bottom should equal “C” dimen-sion
for each model number.
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
➁
12
①
Horsepower
Amp Draw
RPM
➁
At 65°F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods.
All single phase motors are totally enclosed and thermal overload protected. Data listed is for standard 115-volt, 60 hertz, single-phase motors.
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.
Clearance at bottom should
equal “C” dimension for each
model number.
For natural gas; may vary depending on control availability.
➁
This is an approximate dimension for standard motors, allow 3" for sheave and optional motors.
➂
BAE 50 thru BAE 250 — 4 holes (2 on blower and 2 on unit).
➃
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.
Data listed is for standard 115-volt, 60-Hertz, single-phase motors.
①
13
PERFORMANCE DATA – NOZZLES
S
T
H
S
S
H
S
T
T
H
S
S
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.
40° DOWNWARD
NOZZLE
90° VERTICAL
NOZZLE
5-WAY
NOZZLES
40° SPLITTER
NOZZLE
Mounting Height, Heat Throw, Heat Spread (in feet)
Nozzle
Type
40°
Downward
Nozzle
90° Vertical
Nozzle
40° Splitter
Nozzle
5-Way
Nozzle
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.
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.
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.
standard drive arrangement. For operation outside the
shaded area, specify motor Hp and drive number.
Outputs shown are for elevations up to 2000'. For ele-
➁
vations 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 opera-
➂
tion, check blower rpm.
Mounting height and throw for BV models (w/o duct-
➃
work 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
➄
tings and standard drives.
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.
bold
type indicate factory set-
19
Heater Parts from ACF Greenhouses
SERVICE INSTRUCTIONS – SAFETY DEVICES
Figure 13
Cross-section of Propeller Type Unit
ALUMINIZED STEEL
DRAFT DIVERTER
VENT PIPE
CONNECTION
HEAT EXCHANGER
FAN & FAN GUARD
LIMIT CONTROL
BLOCKED VENT
SAFETY SWITCH
DIVERTER RELIEF
OPENING
DEFLECTOR BLADES
MAIN BURNER
Limit Control (Overheat Switch)
The limit control, mounted on the left inner side panel (when
facing front of unit), will shut off the gas supply to the main
burner in the event of overheating. It is a single pole single
throw switch. The contacts open to shut the electric gas valve
off in the event the unit should overheat. This limit control
should operate only when something is seriously wrong with the
unit. Anytime this control operates, correct the difficulty
immediately or serious damage may result. If the limit control
cuts off the gas supply during normal operation:
1. Make sure deflector blades are open and that there are not
any obstructions in the air inlet or discharge outlet.
2. Check actual input to unit against rated input.
3. Check to be sure motor is operating.
4. On propeller units, check that fan is not loose on motor
shaft. On blower units, check belt and sheave for tightness
or damage.
5. On propeller units, check fan speed against speed on motor
nameplate. On blower units check blower speed against
Performance Data on pages 18 or 19, check for restriction in
ducts and for dirty filters.
6. Check to make sure the venting system is not damaged or
blocked. Also check to be sure unit is venting normally and
that there is not negative pressure in the building adversely
affecting draft.
7. Clean heat exchanger tubes inside and out if necessary.
8. If items 1-7 do not solve the problem, check limit control and
replace if necessary. The control is accessible by removing
COMBUSTION AIR
INLETS
the left outer side panel, held in place by screws at the rear
of the unit.
I
MPORTANT NOTE:
The limit control (overheat switch) on this unit heater will shut
off the gas should excessive discharge temperatures occur. Do
not attempt to control the fan with the limit control. Any change
in wiring to attempt to control the fan with the limit control will
result in hazardous conditions and void the warranty.
Blocked Vent Safety Switch (BVSS)
A BVSS is supplied on all gravity-vented unit heaters and is
designed to prevent operation of the main burner if the venting
system is blocked.
If the BVSS has tripped, turn off the gas and electric supply to
the unit heater. Check the entire vent system connected to the
unit heater for blockage or damage.
In the case of a restricted vent, there may not be enough
dilution air to carry away the heat radiating off the heat
exchanger top (and surrounding area), the BVSS may exceed
the temperature setting and trip.
Spillage will also cause the BVSS to trip. If spillage exceeds five
minutes, even though the vent is in compliance with the NFGC,
some type of change must be made in the vent system to stop
the spillage. These changes (improvements) could be
lengthening the vertical vent run, reducing the horizontal vent
run, insulating the vent pipe, using a larger diameter vent pipe,
or using a less restrictive vent terminal.
If these changes do not stop the spillage or the installer
20
Heater Parts from ACF Greenhouses
SERVICE INSTRUCTIONS – SAFETY DEVICES
Is vent blocked or restricted?
Remove restriction
Is there spillage after 5 minutes? (see note 1)
Is there a negative pressure in building? (see note 2)Replace blocked vent switch;
Does switch still trip?
OK
Is vent in compliance
with NFGC?
Can negative pressure
be corrected?
Correct vent
Install
power vent
accessory
Correct
negative
pressure
Is unit overfired?
Reduce input
Can one or more of the following be done?
• Lengthen vertical vent run
• Insulate vent
• Use larger diameter vent
• Use less restrictive weather cap
OK
Install power
exhauster accessory
Does unit still trip?
Install power vent
accessory
YES
YES
YES
YESYES
YES
YES
YES
YES
NONO
NONO
NO
NO
NO
NO
NO
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.
One indication of negative pressure is
that outside doors tend to swing toward
inside of building.
Note 1:
Note 2:
Limit Control (Overheat Switch)
The limit control, mounted on the left inner side panel (when
facing front of unit), will shut off the gas supply to the main
burner in the event of overheating. It is a single pole single
throw switch. The contacts open to shut the electric gas valve
off in the event the unit should overheat. This limit control
should operate only when something is seriously wrong with the
unit. Anytime this control operates, correct the difficulty
immediately or serious damage may result. If the limit control
cuts off the gas supply during normal operation:
1. Make sure deflector blades are open and that there are not
any obstructions in the air inlet or discharge outlet.
Figure 13a
BVSS - Troubleshooting Flow Chart
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
Heater Parts from ACF Greenhouses
21
SERVICE INSTRUCTIONS – GENERAL
ONLY PEOPLE TRAINED AND FAMILIAR WITH THE
OPERATION OF UNIT HEATERS AND THEIR CONTROLS
SHOULD SERVICE THIS UNIT.
General Maintenance
1. Service air moving components annually.
a. On propeller units this includes checking motor for
lubrication if motor is not the permanently lubricated
type and check fan for fit on motor shaft and for
damage to blades.
b.On blower units this should include:
(1) Checking motor and blower bearings for lubrication.
(2) Checking belt and sheaves for proper alignment
and adjustment.
(3) Checking cleanliness of blower wheel and filters.
2. Keep unit free from dust, dirt, grease, and foreign matter,
paying particular attention to:
a.Combustion air inlets.
b.Burner ports, pilot burner, and main burner orifices
(
avoid use of hard, sharp instruments capable of
damaging surfaces, for cleaning these ports.)
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.
If air
c.Primary air shutters (when used).
d. Clean heat exchanger tubes from bottom with stiff brush
after removing burner (Do not use wire brush).
e.Bottom pan.
f.Fan blade.
3. Check wiring for possible loose connections.
4. Controls – See control instruction sheets furnished
separately with the unit heater.
T
o Remove Main Burner
1. Turn off all electricity and gas to unit.
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
MANIFOLD
MAIN
BURNER
ORIFICES
MANIFOLD MOUNTING
SCREW AND PIN
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.
. Lifting Flames
1
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.
Figure 15
Air Shutter Adjustment, Propane Gas
MANIFOLD
AIR
SHUTTER
MIXER
TUBES
Figure 18
Lifting Flame Condition
MAIN
BURNER
ORIFICES
2
2
Heater Parts from ACF Greenhouses
TROUBLESHOOTING GUIDE
GOOD
BAD
2. Yellow Tipping
Yellow tipping of a normally blue flame is caused by insufficient
primary air, and indicated incomplete combustion producing
carbon monoxide, aldehydes, and free carbon (soot). A dirty
orifice or one that is out of line, can also reduce primary air and
cause yellow tipping. Check orifice, clean realign, or replace if
necessary. With propane gas, some yellow tipping is always
present, but is not objectionable.
3. Flashback
Flashback occurs when air-gas mixture ignites inside the
burner to burn near the orifice. Flashback on ignition or during
burner operation usually can be eliminated by reducing
primary air. The burner may also be operating below its rated
capacity. Check input rate and adjust to correct value by
increasing orifice size or manifold gas pressure.
. Wavering Flames
4
Drafts across burners may cause flames to waver or appear
unstable. Wavering flames can lead to incomplete combustion
if flames impinge on cool surfaces. Wavering can be caused
by air drafts into the burner compartment or by misalignment
of the burner. Draft-blown flames may indicate a cracked heat
exchanger.
Figure 17
Wavering Flame or Misalignment
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
6. Flame Rollout
Flames rolling out of the combustion air inlets when the burner
is turned on can create a fire hazard, scorch unit finish, burn
wires, or damage controls. Gas in the burner mixer may be
ignited, producing flashback. Flame rollout is a variation of
floating flames, with flames reaching for air outside the
combustion chamber. Basic cause is lack of combustion air
that may be due to overfiring, poor venting, or flue blockage.
Figure 19
Flame Rollout Appearance
Standing Pilot Problem Symptoms and Diagnosis
1. If pilot does not light:
POSSIBLE CAUSES AND REMEDIES
1a. Check that manual gas control (knob or lever) on
combination gas control is in the pilot position.
1b. Bleed air from pilot line. (Use special care in bleeding
propane units.)
1c. If pilot sputters, check pilot line for condensate or other
obstruction.
1d. If pilot flame is feeble or short, check pilot orifice for
cleanliness. Replace if necessary. See page 9 for pilot
flame adjustment.
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.
. If standing pilot does not stay lit:
2
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.
. If main burners do not light:
4
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.
ntermittent Pilot Problem Symptoms and
I
Diagnosis
1. Pilot will not light or stay lit:
POSSIBLE CAUSEPOSSIBLE REMEDY
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.
24
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.
2. Pilot lights, main burner will not light
POSSIBLE CAUSEPOSSIBLE 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
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.
POSSIBLE CAUSEPOSSIBLE REMEDY
3a. Flame sensing circuit failure.
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 CAUSEPOSSIBLE 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.
W
hen 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.
Shaded pole motors on models PAE 30 through PAE 125 – permanent split capacitor motors on models PAE 145 through PAE 400.
➀
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
➁
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.
BAE models – split phase motors 1/4-3/4 hp, capacitor start type motors 1-5 hp. 1/4-5 hp motors – 1725 rpm.
➂
Units with 460V/3φ power supply are not listed by C.G.A.
➃
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
➄
manufacturer and Modine. All motors are totally enclosed and all single phase motors have built-in thermal overload protection.
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
Heater Parts from ACF Greenhouses
CONTROL OPTIONS
Propeller and Blower Unit Heaters – PAE and BAEModels ➀ ➁ ➂
ontrol System Description
C
Single-Stage, Standing Pilot, 100% Shut-Off –
thermocouple. Pilot needs to be manually lit initially and stays lit.
Two-Stage, Standing Pilot, 100% Shut-Off –
100% of full rated input) and thermocouple. Pilot needs to be manually lit initially and stays lit.
Available on PAE/BAE models only.
Single-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry –
stage combination gas control and an ignition control (continuous retry). Pilot is automatically lit on
call for heat.
Mechanical Modulation with Automatic Pilot Ignition, 100% Shut-Off with Continuous Retry –
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.
wo-Stage, Intermittent Pilot Ignition, 100% Shut-Off with Continuous Retry –
T
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.
➀
Models BAE 50 thru BAE 100 with two-stage or modulating gas controls require a Category II vent system.
➁ 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.
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.
ontrol Operating Sequence
C
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.
F
or 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.
Utilizes a single-stage combination gas control and
Utilizes a two-stage gas control (which fires at 50% or
Utilizes a single-
Utilizes
Utilizes a two-stage
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.
T
wo-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.
M
echanical 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.
Control
Code No.
11
12
81
82
25
26
83
84
30
31
85
86
59
60
89
90
63
64
87
88
Service Voltage
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
115V
200/230V
Thermostat
Voltage
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
Service Checklist
Date IntalledServiced by &
Type of
Gas
natural
natural
propane
propane
natural
natural
propane
propane
natural
natural
propane
propane
natural
natural
propane
propane
natural
natural
propane
propane
Serial No.Date Serviced
Model No.Serviced by &
Power CodeDate 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
Climatec, Inc.
Phoenix, AZ
(602) 944-3330
ARKANSAS
John Lynn Co., Inc.
North Little Rock, AR
(501) 771-4343
CALIFORNIA
A/C Specialties
LaHabra, CA 90631
(714) 738-7711
Envir. Indus. Prod.
Mountain View, CA
(415) 964-6161
COLORADO
McCoy Sales Corp.
Englewood, CO
(303) 762-8012
CONNECTICUT
E.W. Leonard, Inc.
Moodus, CT
(203) 873-8691
DISTRICT OF COLUMBIA
Marva Sales, Inc.
Leesburg, VA
(540) 338-2009
FLORIDA
T.H. Brooks
Apopka, FL
(407) 886-8405
T.H. Brooks
Tampa, FL
(813) 622-7000
Aeromechanical, Inc.
Gulf Breeze, FL
(904) 932-2011
Power/Conditioning,
Tampa, FL
(813) 622-7000
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
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
Jorban Riscoe Assoc.
Wichita, KS
(316) 687-3277
KENTUCKY
Climate Conditioning
Louisville, KY
(502) 267-4696
LOUISIANA
Schully Strawn
Metairie, LA
(504) 831-0000
Reed Mechanical
Shreveport, LA
(318) 865-3515
MAINE
Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000
MARYLAND
Marva Sales, Inc.
Baltimore, MD 21217
(410) 945-0171
MASSACHUSETTS
Emerson-Swan, Inc.
Randolph, MA
(617) 986-2000
MICHIGAN
Raley Brothers
Grand Rapids, MI
(616) 742-0150
Air One Co.
Oak Park, MI
(810) 398-8700
Witheridge Co.
Saginaw, MI
(517) 792-2598
MINNESOTA
Walters-Climate, Inc.
Minneapolis, MN
(612) 544-8626
MISSISSIPPI
Ward Mechanical
Jackson, MS
(601) 956-3002
MISSOURI
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
For service contact your local qualified installation and service contractor or appropriate utility company.
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
NEW YORK
Emerson-Swan, Inc.
East Greenbush, NY
(518) 477-2693
Edward H. Cox & Co.
Hamburg, NY
(716) 648-6321
R.P. Fedder Corp.
Rochester, NY
(716) 288-1600
Wales-Darby, Inc.
Ronkonkoma, NY
(516) 585-6800
Fedder Associates
Syracuse, NY
(315) 437-8451
NORTH CAROLINA
L.R. Gorrell Co.
Asheville, NC
(704) 253-1856
L.R. Gorrell Co.
Charlotte, NC
(704) 333-8436
L.R. Gorrell Co.
Greensboro, NC
(919)373-1281
L.R. Gorrell Co.
Raleigh, NC
(910) 821-1161
NORTH DAKOTA
Walters-Climate, Inc.
Minneapolis, MN
(612) 544-8626
OHIO
R.G. Anderson Co.,
Cincinnati, OH
(513) 527-2300
Mussun Sales, Inc.
Cleveland, OH
(216) 431-5088
Mussun Sales, Inc.
Columbus, OH
(614) 294-4822
Stoermer Equipment
Dayton, OH
(513) 275-5007
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
B.J. Terroni
Bensalem, PA
(215) 639-3600
Charles W. Stanger
Allison Park, PA
(412) 492-9220