john deer AC-70 User manual
Save this manual for future reference.
IMPORTANT: Read and understand this manual before
assembling, starting, or servicing heater.
Improper use of heater can cause serious in ury. Keep
this manual for future reference.
JOHN DEERE PORTABLE FOR ED AIR HEATERS
OWNER’S MANUAL
MODELS: A -70, A -115, A -165
TABLE OF ONTENTS
Safety Information ............................................... 2
Unpacking ........................................................... 2
Product Identification ........................................... 3
Assembly ............................................................. 4
Theory of peration ............................................ 5
Fuels .................................................................... 5
Ventilation ........................................................... 6
peration ............................................................ 6
Storing, Transporting, or Shipping ....................... 7
Preventative Maintenance Schedule ................... 7
Troubleshooting ................................................... 8
Service Procedures ............................................. 9
Wiring Diagrams ............................................... 15
Illustrated Parts Breakdown and Parts List ....... 16
Specifications .................................................... 22
Accessories ....................................................... 23
Warranty and Repair Service ............................ 24
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111168-01A2
SAFETY INFORMATION
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate, or service this heater.
Improper use of this heater can
cause serious in ury or death
from burns, fire, explosion,
electrical shock, and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Early signs of carbon monoxide poisoning re-
semble the flu, with headaches, dizziness, and/or
nausea. If you ha e these signs, the heater may not
be working properly. Get fresh air at once! Ha e
heater ser iced. Some people (such as pregnant
women, persons with heart or lung disease, persons
with anemia, those under the influence of alcohol,
and those at high altitudes) are more affected by
carbon monoxide than others.
1. Use only kerosene, #1/#2 diesel/fuel oil, JET A
or JP-8 fuels to a oid risk of fire or explosion.
Ne er use gasoline, naphtha, paint thinners,
alcohol, or other highly flammable fuels.
2. Use only with the electrical oltage and fre-
quency specified on model plate.
3. Heater must be grounded. Use only a properly
grounded three-wire extension cord. Plug into
grounded outlet only.
4. Use only in areas free of flammable apors or
high dust content.
5. Minimum clearance from any combustible
materials: 8 feet (244 cm) from hot air outlet;
6 feet (183 cm) from top; and 2 feet (61 cm)
from sides and inlet.
6. Locate heater on a stable and le el surface
while hot or operating or a fire may occur.
7. Use only in well entilated areas. Pro ide enti-
lation of at least three square feet (2,800 square
cm) for each 100,000 Btu/Hr of rating.
8. Keep children and animals away from heater
at all times.
9. Ne er start heater when combustion chamber
is hot or if fuel has accumulated in combus-
tion chamber.
10. When used with a thermostat, heater may start
at anytime.
11. When heater is mo ed or stored, it must be in
a le el position or fuel spillage may occur.
12. Use heater only in accordance with local
ordinances and codes.
13. Ne er use gasoline, crankcase drainings,
naphtha, paint thinners, alcohol, or other
highly flammable fuels.
14. Ne er use heater where gasoline, paint thin-
ner, or other highly flammable apors are
present.
15. Ne er use heater in li ing or sleeping areas.
16. Ne er lea e a heater plugged in without adult
super ision if children or animals are likely to
be present.
17. Ne er mo e, handle, refuel, or ser ice a hot,
operating, or plugged-in heater.
18. Ne er block air inlet at motor end (rear) of
heater.
19. Ne er attach duct work to front of heater.
20. Ne er attach heater to external fuel tank.
UNPA KING
1. Remo e all protecti e packaging that has been
applied to heater for shipment
2. Remo e heater from carton.
3. Check heater for any shipping damage. If dam-
age is found, promptly inform dealer where
heater was purchased.
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3111168-01A
PRODU T IDENTIFI ATION
Figure 2 - 70 Models
Handle
Fuel Cap
Lower
Shell
Power Cord
Fuel Tank
Hot Air
utlet
Air Filter End
Cover
Fan Guard
Upper Shell
Side Cover
Ignition Control Assembly
(assembly on inside of side cover)
Thermostat
Knob
Nose Cone Guard
Figure 3 - 115/165 Models
Lower Shell
Hot Air
utlet Fan Guard
Fuel Tank
Side Cover
Fuel Cap
Upper Shell
Power Cord
Ignition Control Assembly
(assembly on inside of side cover)
Thermostat Knob
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111168-01A4
ASSEMBLY
(FOR 70 MODELS ONLY)
These models are furnished with a nose cone
guard. Nose cone guard and mounting screws are
found in the shipping carton.
Tools Needed
• 5/16" Nut Dri er or Wrench
1. Place nose cone guard on top of upper shell
flange. Make sure nose cone guard is on hot
air outlet end of heater.
2. Insert screws through nose cone guard and
upper shell flange.
3. Tighten screws firmly.
Figure 4 - Nose Cone Guard Assembly
70 Models Only
Nose Cone
Guard
Screw
Hot Air
utlet
Upper Shell
Flange
(FOR 115 AND 165 MODELS ONLY)
These models are furnished with wheels and a front
handle. Some models are furnished with a rear
handle also. Wheels, handle(s), and the mounting
hardware is found in the shipping carton.
Tools Needed
• Medium Phillips Screwdri er
• 3/8" Open or Adjustable Wrench
• Hammer
1. Slide axle through wheel support frame. Install
wheels on axle.
IMPORTANT: Place extended hub of wheel
toward wheel support frame.
2. Place cap nuts on axle ends. Gently tap with
hammer to secure.
3. Place heater on wheel support frame assem-
bly. Make sure air inlet end of heater is o er
wheels.
4. Place front handle on top of fuel tank flange.
Insert screws through handle(s), fuel tank
flange and wheel support frame. Attach nut
finger tight after each screw is inserted.
5. Tighten all nuts firmly.
Figure 5 - Wheel and Handle Assembly
115/165 Models Only
Front
Handle
Hot Air
utlet
Fuel Tank
Flange
Wheel
Support
Frame
Wheel
Cap Nut Axle
Nut
Extended Hub
Air Inlet
Screw
Rear Handle
(If Equipped)
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5111168-01A
THEORY OF OPERATION
The Fuel System: The air pump forces air through
the air line. The air is then pushed through the
nozzle. This air causes fuel to be lifted from the
tank. A fine mist of fuel is sprayed into the com-
bustion chamber.
The Air System: The motor turns the fan. The
fan pushes air into and around the combustion
Figure 6 - Cross Section Operational View
Clean
Heated
Air ut
Fuel
Filter
Air
utput
Filter
Air Pump
Air Intake
Filter
Cool
Air In
Fan
Combustion Chamber
Ignitor Motor
Air For Fuel
System Air For Combustion
And Heating Fuel
Nozzle
Fuel Tank
Ignition Control
Assembly
Air Line
To Burner
chamber. This air is heated and pro ides a stream
of clean, hot air.
The ignition control assembly pro ides power to
the ignitor. This ignites the fuel/air mixture in the
combustion chamber.
The Flame-Out Control System: This system causes
the heater to shut down if the flame goes out.
FUELS
WARNING: Use only kero-
sene, #1/#2 diesel/fuel oil, JET
A or JP-8 fuels to avoid risk
of fire or explosion. Never
use gasoline, oil drained from
crankcases, naphtha, paint
thinners, alcohol or other highly
flammable fuels.
Use only kerosene, #1/#2 diesel/fuel oil, JET A
or JP-8 fuels. Hea ier fuels such as No. 2 fuel
oil or No. 2 diesel fuel may also be used but will
result in:
• noticeable odor
• additional fuel filter maintenance
• the need for nontoxic, anti-icer additi es in ery
cold weather
Do not use fuels hea ier than No. 2 grade or
hea y oils such as oil drained from crankcases.
These hea y oils will not ignite properly and will
contaminate the heater.
IMPORTANT: Use a KEROSENE ONLY (blue)
or DIESEL ONLY (yellow) storage container. Be
sure storage container is clean. Foreign matter
such as rust, dirt, or water will cause the ignition
control assembly to shut down heater. Foreign
matter may also require heater's fuel system to be
frequently cleaned.
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111168-01A6
VENTILATION
WARNING:Provide a fresh air
opening of at least three square
feet (2,800 square cm) for each
100,000 Btu/Hr rating. Provide
extra fresh air if more heaters
are being used. The minimum
ventilation requirements must
be followed to avoid risks as-
sociated with carbon monoxide
poisoning. Make certain these
requirements are met prior to
operating heater.
Example: A 165 model heater requires one of
the following:
• a two-car garage door (16 ft. [4.88 m] wide
opening) raised four inches (10.16 cm)
• a single-car garage door (9 ft. [2.74 m] wide
opening) raised se en inches (17.78 cm)
• two, thirty-inch (76.20 cm) windows raised
twel e inches (30.48 cm)
OPERATION
IMPORTANT: Review and under-
stand the warnings in the Safety
Information section, page 2.
They are needed to safely oper-
ate this heater. Follow all local
ordinances and codes when
using this heater.
TO START HEATER
1. Follow all entilation and safety informa-
tion.
2. Fill fuel tank with kerosene, #1/#2 diesel/fuel
oil, JET A or JP-8 fuels.
3. Attach fuel cap.
4. For thermostat models 55T, 70T, 115T, and
165T, turn thermostat knob clockwise to the
high position.
5. Plug heaterʼs power cord into appro ed,
grounded, three-wire extension cord. Extension
cord must be at least six feet (1.8 meters) long.
Extension Cord Size Requirement
6 to 10 feet (1.8 to 3 meters) long, use 18 AWG
(0.75 mm2) rated cord
11 to 100 feet (3.3 to 30.5 meters) long, use
16 AWG (1.0 mm2) rated cord
101 to 200 feet (30.8 to 61 meters) long, use
14 AWG (1.5 mm2) rated cord
6.
Plug extension cord into standard 120 olt/60
hertz, 3-prong grounded outlet.
Note:
Ignitor will
preheat for fi e seconds, then heater will start.
7. For thermostat models 55T, 70T, 115T, and
165T, adjust thermostat knob to the desired
setting. Note: A cold heater may affect
the thermostat setting. This thermostat is a
general-heating control. It is not intended for
precise temperature control. Adjust thermostat
until heater cycles at the desired setting.
TO STOP HEATER
Unplug extension cord from outlet.
TO RESTART HEATER
1. Unplug extension cord from outlet and wait
10 seconds. (Wait two minutes if heater has
been running.)
2. Repeat steps under To Start Heater.
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7111168-01A
Item How Often How To
Fuel tank Flush e ery 150-200 hours See Storing, Transporting, or
of operation or as needed Shipping
Air output and lint filters Replace e ery 500 hours of See Air Output, Air Intake,
operation or once a year and Lint Filters, page 10
Air intake filter Wash and dry with soap and See Air Output, Air Intake,
water e ery 500 hours of and Lint Filters, page 10
operation or replace as needed
Fuel filter Clean twice a heating season See Fuel Filter, page 11
or replace as needed
Ignitor None required
Fan blades Clean e ery season or See Fan, page 9
as needed
Motor Not required/permanently
lubricated
STORING, TRANSPORTING,
OR SHIPPING
Note: If shipping, transport companies require
fuel tanks to be empty.
1. Drain fuel tank.
Note: Some models ha e drain plug on un-
derside of fuel tank. If so, remo e drain plug
to drain all fuel. If heater does not ha e drain
plug, drain fuel through fuel cap opening. Be
sure all fuel is remo ed.
2. Replace drain plug if pro ided.
3. If any debris is noted in old fuel, add 1 or 2
quarts of clean kerosene to tank, stir, and drain
again. This will pre ent excess debris from
clogging filters during future use.
4. Replace fuel cap or drain plug. Properly dis-
pose of old and dirty fuel. Check with local
automoti e ser ice stations that recycle oil.
5. If storing, store heater in dry place. Make sure
storage place is free of dust and corrosi e
fumes.
IMPORTANT: Do not store kerosene o er summer
months for use during next heating season. Using
old fuel could damage heater.
PREVENTATIVE MAINTENAN E S HEDULE
WARNING: To avoid risk of burn and electrical shock, never at-
tempt to service heater while it is plugged in, operating, or hot.
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111168-01A8
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, operating,
or hot. Severe burns and electrical shock can occur.
REMEDY
1. Check circuit breaker in elec-
trical panel
2. Turn thermostat knob to a
higher setting
3. Check all electrical connec-
tions. See Wiring Diagrams,
page 15
4. If fan does not turn freely, see
Pump Rotor, page 14
5. Replace ignition control as-
sembly
6. Replace motor
1. Fill tank with kerosene
2. See Pump Pressure Adjust
ment, page 10
3. See Fuel Filter, page 11
4. See Nozzle Assembly, page 12
5. Drain and flush fuel tank with
clean kerosene. See Storing,
Transporting, or Shipping,
page 7
6.
Check electrical connections.
See
Wiring Diagrams ,
page 15
7. Replace ignitor, see page 11
8. Replace ignition control as-
sembly
1. See Pump Pressure Adjust
ment, page 10
2. See Air Output, Air Intake, and
Lint Filters, page 10
3. See Fuel Filter, page 11
4. See Nozzle Assembly, page 12
5. Make sure photocell boot is
properly seated in bracket
6. Clean photocell lens
7. Check electrical connections.
See Wiring Diagrams, page 15
8. Replace photocell
9. Replace ignition control as-
sembly
POSSIBLE CAUSE
1. No power to heater
2. Thermostat setting is too low
3. Bad electrical connection be-
tween motor and ignition con-
trol assembly or ignition control
assembly and power cord
4. Binding pump rotor
5. Defecti e ignition control as-
sembly
6. Defecti e motor
1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle
5. Water in fuel tank
6. Bad electrical connection
between ignitor and ignition
control assembly
7. Defecti e ignitor
8. Defecti e ignition control as-
sembly
1. Pump pressure incorrect
2. Dirty air intake, air output,
and/or lint filter
3. Dirty fuel filter
4. Obstruction in nozzle
5. Photocell assembly not properly
installed (not seeing the flame)
6. Dirty photocell lens
7. Bad electrical connection be-
tween photocell and ignition
control assembly
8. Defecti e photocell
9. Defecti e ignition control as-
sembly
FAULT CONDITION
Motor does not start fi e seconds
after heater is plugged in
Motor starts and runs but heater
does not ignite
Heater ignites but ignition control
assembly shuts heater off after a
short period of time
WARNING: High voltage!
WARNING: High voltage!
WARNING: High voltage!
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9111168-01A
SERVI E PRO EDURES
WARNING: To avoid risk of
burn and electrical shock, never
attempt to service heater while it
is plugged in, operating, or hot.
UPPER SHELL REMOVAL
1. Remo e screws along each side of heater using
5/16" nut-dri er. These screws attach upper
and lower shells together. See Figure 7 or 8.
2. Lift upper shell off.
3. Remo e fan guard.
Screw
Upper Shell
Fan Guard
Figure 7 - Upper Shell Removal
(70 Model Only)
Screw Upper Shell
Fan Guard
Figure 8 - Upper Shell Removal
(115/165 Models Only)
Figure 9 - Fan Motor Shaft and
Setscrew Location
Flush
Fan
Setscrew
Motor Shaft
Motor
Figure 10 - Fan Cross Section
Setscrew
Motor Shaft
Fan
FAN
IMPORTANT: Remo e fan from motor shaft
before remo ing motor from heater. The weight
of the motor resting on the fan could damage the
fan pitch (see Figure 9).
1. Remo e upper shell (see Figure 7 or 8).
2. Use 1/8" allen wrench to loosen setscrew
which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using a soft cloth moistened with
kerosene or sol ent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place fan hub flush
with end of motor shaft (see Figure 10).
7.
Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds/4.5-
5.6 n-m).
8. Replace fan guard and upper shell.
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111168-01A10
Air utput
Filter
Lint Filter
Figure 11 - Air Output Air Intake and
Lint Filters 70 Model
Figure 12 - Air Output Air Intake and
Lint Filters 115/165 Models
Filter End
Cover Fan
Guard
Air utput Filter
Lint Filter
Air Intake
Filter Filter End
Cover
Fan
Guard
Air Intake
Filter
AIR OUTPUT, AIR INTAKE AND LINT
FILTERS
1.
Remo e upper shell (see Figure 7 or 8, page 9).
2. Remo e filter end co er screws using 5/16"
nut-dri er. See Figure 11 or 12.
3. Remo e filter end co er.
4. Replace air output and lint filters.
5. Wash or replace air intake filter (see Preventa
tive Maintenance Schedule, page 7).
6. Replace filter end co er.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
SERVI E PRO EDURES
Continued
Relief Valve
Pressure
Gauge
Plug
Figure 13 - Pressure Gauge Plug
Removal (70 Model Shown)
Pump
Model Pressure
70 4.7 PSI
115 5.1 PSI
165 5.6 PSI
Pressure
Gauge
Figure 14 - Adjusting Pump Pressure
(70 Model Shown)
PUMP PRESSURE ADJUSTMENT
1. Remo e pressure gauge plug from filter end
co er (see Figure 13).
2. Install accessory pressure gauge (part number
HA1180).
3. Start heater (see Operation, page 6). Allow
motor to reach full speed.
4. Adjust pressure. Turn relief al e to right to
increase pressure. Turn relief al e to left to
decrease pressure. See specifications correct
pressure for each model (see Figure 14).
5. Remo e pressure gauge. Replace pressure
gauge plug in filter end co er.
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11111168-01A
Fuel Filter, Bushing,
and Lower Fuel Line
Upper Fuel Line
Side
Cover
Fuel Filter
Side
Cover
Figure 15 - Fuel Filter Removal
70 Model
Figure 16 - Fuel Filter Removal
115/165 Models
Upper Fuel Line
FUEL FILTER
1. Remo e side co er screws using 5/16" nut-
dri er.
2. Remo e side co er.
3. Pull upper fuel line off fuel filter neck (see
Figure 15 or 16).
4. Carefully pry bushing, fuel filter, and lower
fuel line (115/165 models only) out of fuel
tank (see Figure 16).
5. Wash fuel filter with clean fuel and replace in
tank.
6. Attach upper fuel line to fuel filter neck.
7. Replace side co er.
SERVI E PRO EDURES
Continued
Figure 17 - Disconnecting Ignitor Wires
from Ignition Control Assembly
Combustion
Chamber
Photocell
Bracket
Photocell
Assembly
Air Line
Hose
Fuel Line
Hose
Ignitor Wire
(Yellow)
Ignitor
Nozzle
Adapter
Bracket
Ignition
Control
Assembly
Side Cover
Photocell
Bracket
Ignitor
Ignitor Screw/
Washer Assembly
Nozzle
Adapter
Bracket
Ignitor Element
Combustion Chamber Nozzle Adapter
Bracket pening
Figure 18 - Ignitor Replacement
IGNITOR
1. Remo e upper shell and fan guard (See Upper
Shell Removal, page 9).
2. Remo e fan (see page 9).
3.
Remo e 4 side co er screws with a 5/16"
nut dri er. Remo e side co er (see Figures
15 and 16).
4. Disconnect ignitor wires (yellow) from igni-
tion control assembly (see Figure 17). Pull
the ignitor wires up through the hole in the
lower shell.
5. Disconnect fuel line hose and air line hose.
Remo e photocell from photocell bracket (see
Figure 17).
6. Remo e combustion chamber. Stand com-
bustion chamber on end with nozzle adapter
bracket on top (see Figure 18).
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111168-01A12
Figure 21 - Removing Air and Fuel Line
Hoses (165 Model Only)
Fuel Line
Hose
Combustion
Chamber
Nozzle/
Adapter
Assembly
Air Line
Hose
Figure 19 - Removing Air and Fuel Line
Hoses (70 Model Only)
Fuel Line
Hose
Combustion
Chamber Nozzle/
Adapter
Assembly
Air Line
Hose
Photocell
Bracket
Burner Strap
Figure 20 - Removing Air and Fuel Line
Hoses (115 Model Only)
Photocell
Bracket
Burner Strap
Combustion
Chamber
Burner Strap
Photocell
Bracket
Fuel Line
Hose
Air Line Hose
Nozzle/
Adapter
Assembly
SERVI E PRO EDURES
Continued
7. Remo e ignitor screw with a 1/4" nut dri er.
Carefully remo e ignitor from nozzle adapter
bracket.
CAUTION: Do not bend or
strike ignitor element. Handle
with care.
8. Carefully remo e replacement ignitor from
styrofoam packing.
9. Carefully guide ignitor into opening in nozzle
adapter bracket. Do not strike ignitor element.
Attach ignitor to nozzle adapter bracket with
screw using a 1/4" nut dri er (see Figure 18, page
11). Torque 8 to 15 in. lbs. Do not o er torque.
10. Replace combustion chamber.
11. Route the ignitor wires back down through
the hole in the lower shell. Connect wires to
the ignition control assembly (see Figure 17,
page 11).
12. Replace side co er (see Figures 15 and 16,
page 11).
13. Connect and route fuel line hose and air line
hose to nozzle adapter assembly. See Fuel and
Air Line Replacement and Proper Routing,
page 13.
14. Replace photocell in photocell bracket. Route
wires as shown in Figure 19, 20, or 21.
15. Replace fan (see Fan, page 9).
16. Replace fan guard and upper shell (see Upper
Shell Removal, page 9).
Nozzle
Assembly
Burner Strap
Figure 22 - Removing Nozzle Assembly
All Models
NOZZLE ASSEMBLY
1. Remo e upper shell (see Upper Shell Re
moval, page 9).
2. Remo e fan (see Fan, page 9).
3. Remo e fuel and air line hoses from nozzle
assembly (see Figure 19, 20, or 21).
4. Turn nozzle assembly 1/4 turn to left and pull
toward motor to remo e (see Figure 22).
5. Place plastic hex-body into ise and lightly
tighten.
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13111168-01A
SERVI E PRO EDURES
Continued
Air Line Fitting
Fuel Line Fitting
Nozzle
Nozzle
Sleeve
Nozzle
Face
Figure 23 - Nozzle and Nozzle Adapter
All Models
Nozzle Adapter
6. Carefully remo e nozzle from the nozzle adapter
using 5/8" socket wrench. See Figure 23.
7. Blow compressed air through face of nozzle.
This will free any dirt in nozzle area.
8. Inspect nozzle slee e for damage.
9. Replace nozzle into nozzle adapter until
nozzle seats. Tighten 1/3 turn more using
5/8" socket wrench (40-45 inch-pounds). See
Figure 23.
10. Attach nozzle assembly to burner strap (see
Figure 22).
11. Attach fuel and airline hoses to nozzle adapter
assembly. See Fuel and Air Line Replacement
and Proper Routing.
12. Replace fan (see Fan, page 9).
13. Replace fan guard and upper shell (see Upper
Shell Removal, page 9).
Barb
Fitting
Air Hose
Pump End Cover
Barb
Fitting
115/165
Models
Model 70
Figure 24 - Air Hose to Barb Fitting
FUEL AND AIR LINE REPLACEMENT
AND PROPER ROUTING
1. Remo e upper shell (see Upper Shell Re
moval, page 9).
2. Remo e side co er screws using 5/16" nut
dri er (see Figure 15 or 16, page 11).
3. Remo e side co er.
4. Inspect fuel and air line hoses for cracks and/or
holes. If fuel line hose is damaged, disconnect
from nozzle adapter (see Figure 19, 20, or 21,
page 12) and from fuel filter (see Fuel Filter,
page 11). If air line hose is damaged, discon-
nect from nozzle adapter (see Figure 19, 20,
or 21, page 12) and from barb fitting on pump
end co er (see Figure 24).
5. Install new air and/or fuel line. Attach one
end of air line hose to barb fitting on pump
end co er (see Figure 24) and the other end to
nozzle adapter (see Figure 19, 20, or 21, page
12). Attach one end of fuel line hose to fuel
filter (see Fuel Filter, page 11) and the other
end to nozzle adapter (see Figure 19, 20, or
21, page 12).
Note: Route hoses as shown in Figure 19, 20,
or 21, page 12, according to model. Hoses are
not to touch photocell bracket.
6. Replace side co er.
7. Replace upper shell and fan guard (see Upper
Shell Removal, page 9).
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111168-01A14
PUMP ROTOR
(Procedure if Rotor is Binding)
1. Remo e upper shell (see Upper Shell Re
moval, page 9).
2. Remo e filter end co er screws using 5/16"
nut-dri er (see Figure 25 or 26).
3. Remo e filter end co er and air filters.
4. Remo e pump plate screws using 5/16" nut-
dri er.
5. Remo e pump plate.
6. Remo e rotor, insert, and blades.
7. Check for debris in pump. If debris is found,
blow out with compressed air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to .003"/.004"
(.076-.101 mm) if needed (see Figure 27).
Note: Rotate Rotor one full turn to insure the gap
is .003"/.004" (.076-.101 mm) at tightest position.
Adjust if needed.
10. Install blades, pump plate, air filters, and filter
end co er.
11. Replace fan guard and upper shell (see Upper
Shell Removal, page 9).
12. Adjust pump pressure (see Pump Pressure
Adjustment, page 10).
Note: If rotor is still binding, proceed as follows.
13. Perform steps 1 thru 6.
14. Place fine grade sandpaper (600 grit) on flat
surface. Sand rotor lightly in “figure 8” motion
four times (see Figure 28).
15. Reinstall insert and rotor.
16. Perform steps 10 thru 12.
Figure 26 - Rotor Location 115/165
Models
Figure 25 - Rotor Location 70
Models
Rotor Air utput
Filter
Insert
Fan Guard
Filter End
Cover
Air Intake Filter
Blade
Pump Plate
Insert
Rotor
Air utput
Filter
Blade
Filter End Cover
Air Intake Filter
Pump Plate
Fan Guard
Gap Adjusting Screw
Rotor
Blade
.003"/.004"
(.076-.101 mm)
Gap Measured
With Feeler
Gauge
Gap Adjusting Screw
Figure 27 - Gap Adjusting Screw
Locations
Sandpaper
Figure 28 - Sanding Rotor
SERVI E PRO EDURES
Continued
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15111168-01A
IGNITION CONTROL ASSEMBLY
WARNING: High Voltage!
1. Unplug heater.
2. Remo e side co er screws (4) using 5/16"
nut-dri er to expose ignition control assembly
(see Figure 15 or 16, page 11).
3. Remo e fuse co er (see Figure 29).
4. Remo e fuse from fuse clips (see Figure 29).
5. Replace fuse with fuse of the same type and
rating (GMA-10). Do not substitute a fuse
with a higher current rating.
Figure 29 - Replacing Fuse
Fuse
Fuse
Cover
Fuse
Clips
6. Replace fuse co er (see Figure 29).
7.
Replace side co er (see Figure 15 or 16, page 11).
Power Plug
120V/60Hz
Blue
Blue
White
White
Photocell
Ignition Control Assembly
Green
Green
Red
Black
Black
Yellow
Yellow
Motor
Ignitor
Thermostat
Photocell
Photocell
Ignitor
Motor Return
AC Neutral (L2)
120V (L1)
Ignitor
Motor
Figure 31 - Wiring Diagram for 70/115/165 Thermostat Models
Power Plug
120V/60Hz
Blue
Blue
White
White
Photocell
Green
Green
Red
Black
Yellow
Yellow
Motor
gnitor
gnition Control Assembly
Photocell
Photocell
gnitor
Motor Return
AC Neutral (L2)
120V (L1)
gnitor
Motor
Figure 30 - Wiring Diagram for non-thermostat Models
WIRING DIAGRAMS
SERVI E PRO EDURES
Continued
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17111168-01A
PARTS LIST
MODEL AC-70
This list contains replace-
able parts used in your
heater. When ordering
parts, be sure to pro ide
the correct model and se-
rial numbers (from the
model plate), then the part
number and description of
the desired part.
KEY PART
NO. NUMBER DESCRIPTION QTY.
1 M51104-01 Handle 1
2 098511-67
Upper Shell (Service Part Will Be Black)
1
3 M11084-29 Screw, #10-16 x 3/4" 2
4 108631-01 Screw, #10-16 x 1" 2
5
098512-51 Combustion Chamber 1
6 M10908-2 Screw, #6-32 x 3/8" 2
7 103154-03 Photocell Bracket 1
8 M16656-24 Photocell Assembly 1
9 ** Burner Head Assembly
9-1
HA3026 Nozzle Assembly 1
9-2 HA1000 Ignitor Kit 1
9-3 104056-01 Nozzle Adapter 1
9-4
102336-01 Nozzle Adapter Bracket 1
9-5 M10908-75 Screw, Hex Head, Tapping 1
9-6 103347-01 Belleville Washer 1
10 M11084-26 Screw, #10-16 x 3/8" 2
11
M29678 Fan 1
12 ** Motor (see page 22) 1
13 M51105-01 Fan Guard 1
14 098219-38 Power Cord 1
15 M11143-1 Strain Relief Bushing 1
16 NTC-4C Hex Lock Nut, 1/4-20 2
17 M11084-26 Screw, #10-16 x 3/8" 4
18 M50631 Rubber Bumper 2
19 097461-09 Side Cover 1
20 101205-01 Motor Bracket 1
21 M30865-02 Bushing 2
22 M11271-8 Clip Nut 6
23 M50104-02 Bushing 1
24 M11084-26 Screw, #10-16 x 3/8" 6
25 097211-02 Screw, #8-18 x 1/2" 1
26 098511-234
Lower Shell (Service Part will be Black)
1
27 M50814-06 Rubber Airline 1
28 079973-01 Fuel Line 1
29 M50876-05 Fuel Filter (with bushing) 1
30 M10990-3 Rubber Bushing 1
31 WLE-2 Lock Washer, #8 1
32 102349-01 PCB Support 5
33 104068-02 Ignition Control Assembly 1
34 097702-01 Fuel Cap (Includes Gasket) 1
35 108088-03 Fuel Tank 1
36 M51108-01 Shell Heat-Shield 1
37 104458-01 Thermostat 1
38 M12461-18 Screw, #8-32 x 7/8" 1
39 104460-01 Thermostat Knob 1
40 M15823-27 Screw, #10-16 x 1/2" 4
41 079532-01 Guard, Nose Cone 1
PARTS AVAILABLE - NOT SHOWN
100621-09 Thermostat Decal 1
103814-01 Wire Tie 1
M9900-170 Wire Assembly 1
105550-01 Warning/Maintenance Decal 1
105550-02 Warning/Maintenance Decal 1
** Not available as an assembly
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19111168-01A
KEY PART NUMBER
NO. 115 165 DESCRIPTION QTY.
1 098511-292 098511-292 Upper Shell (Service Part Will Be Black) 1
2 M15823-27 M15823-27 Screw, #10-16 x 1/2" 8
3 098512-71 098512-75 Combustion Chamber 1
4 103154-05 M16660-02 Photocell Bracket 1
5 M10908-2 M10908-2 Screw, #6-32 x 3/8" 2
6 M16656-24 M16656-24 Photocell Assembly 1
7 *** *** Burner Head Assembly 1
7-1 HA3027 HA3028 Nozzle Assembly 1
7-2 HA1000 HA1000 Ignitor Kit 1
7-3 M10908-75 M10908-75 Screw, Hex Head, Tapping 1
7-4 102336-01 102336-01 Nozzle Adapter Bracket 1
7-5 104054-01 104054-01 Nozzle Adapter 1
7-6 103347-01 103347-01 Belleville Washer 1
8 M11084-27 M11084-27 Screw, #10-16 x 1/2" 2
9 097293-01 102042-01 Fan 1
10 *** *** Motor (see page 22) 1
11 M50631 M50631 Rubber Bumper 2
12 101206-01 101206-01 Motor Mounting Bracket 1
13 WLE-2 WLE-2 Washer, #8 1
14 104068-02 104068-02 Igni ion Control Assembly 1
15 NTC-4C NTC-4C Hex Lock Nut, 1/4-20 2
16 111037-01 111037-01 Fan Guard 1
17 M27417 M27417 Drain Plug (Includes “o” Ring) 1
18 099213-01 099213-01 Button Plug 1
19 M51345-06 M51345-06 Fuel Line 1
20 106896-01** 106896-01** Fuel Filter 1
21 M51151-01 M51151-02 Fuel Line Tube 1
22 M10990-3 M10990-3 Rubber Bushing 1
23 M50814-03 M50814-03 Airline 1
24 098511-293 098511-293 Lower Shell (Service Part will be Black) 1
25 M50104-06 M50104-06 Bushing 1
26 M50104-01 M50104-01 Bushing 2
27 M11084-27 M11084-27 Screw, #10-16 x 1/2" 6
28 M11271-8 M11271-8 Clip Nut 8
29 M10908-14 M10908-14 Screw, #8-32 x 3/8" 1
30 108088-04 108088-05 Fuel Tank 1
31 097702-01 097702-01 Fuel Cap (Includes Gasket) 1
32 102349-01 102349-01 P.C. Board Support 5
33 M11143-1 M11143-1 Strain Relief Bushing 1
34 098219-38 098219-38 Power Cord 1
35 M51077-15 M51077-15 Side Cover 1
36 M11084-27 M11084-27 Screw, #10-16 x 1/2" 4
37 104458-01 104458-01 Thermostat 1
38 M12461-18 M12461-18 Screw, #8-32 x 7/8" 2
39 104460-01 104460-01 Thermostat Knob 1
40 079998-01 099614-01 Front Handle 1
41 M12345-33 M12345-33 Screw #10-24 x 1 3/4" 8
42 107426-01 107426-01 Wheels 2
43 M28526 M28526 Nut Cap 2
44 M12342-3 M12831-3 Wheel Support Frame 1
45 NTC-3C NTC-3C Hex Lock Nut, #10-24 6
46 M51015-01 M16801-2 Axle 1
47 _____ 099614-02 Rear Handle (If Equipped) 1
103814-01 103814-01 Wire Tie
HA1180 HA1180 Air Gauge Kit
HA2210 HA2210 Fuel Tank Filter Screen
HA3004 HA3004 Rotor Kit (M22456-1, M22009, M8643)
HA3017 HA3017 Filter Kit (M11637, M12179, M12244-1,106896-01)
HA3020 HA3020 Pump Kit (M27694, M10993-1, M22997,M8940)
100621-08 100621-08 Thermostat Decal 1
PARTS LIST
MODELS AC-115, AND AC-165
** See PTI NAL ACCESS RIES *** Not available as an assembly.
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