SUNFIRE SF120 Radiant Heater

Specifications

• Model: SunFire Radiant Heater
• Manufacturer: SunFire
• Address: 4109 Capital Circle Drive, Janesville WI, 53546
• Website: sunfireheaters.com
• Phone: +1 855-251-1649

Usage Instructions

Safety Precautions

• Read and understand the instruction manual completely before operating the heater.
• Avoid misuse of the product to prevent serious injuries.
• Ensure proper ventilation when using the heater to prevent carbon monoxide poisoning.
• Wear appropriate protective gear when handling ceramic fiber materials to prevent exposure to carcinogenic particles.

Operating Guidelines

1. Place the heater on a level, non-combustible flooring surface.
2. Ensure the power supply is grounded and provides the correct voltage and amperage.
3. Follow the recommended maintenance schedule provided in the manual.
4. Avoid using the heater in residential living areas.

Cleaning and Maintenance
Regularly clean the heater according to the manufacturer’sinstructions. Handle ceramic fiber components with care to minimize exposure to harmful particles. Replace any damaged components promptly to maintain safe operation.

FAQ
Q: Can I use the SunFire Radiant Heater in residential living areas?
A: No, the heater should only be used in well-ventilated areas and not in residential living spaces to prevent carbon monoxide poisoning.

Safety Information

SAFETY, CODES, AND REGULATIONS

• Thank you for purchasing a SunFire product. SunFire heaters are designed and tested for safe, reliable, long-term operation, though proper operation, fuel quality control, and regular maintenance are required. Please read and understand this manual completely before attempting to operate or service the product. Keep and maintain this instruction manual.
• This manual provides instructions necessary to safely use the SunFire Radiant Heater. MISUSE OF THIS PRODUCT MAY RESULT IN SERIOUS OR FATAL INJURIES DUE TO BURNS, FIRE, EXPLOSION, ELECTRICAL SHOCK, OR ASPHYXIATION FROM CARBON MONOXIDE.
• If you have any questions, please go to www.sunfireheaters.com or call 1 855-251-1649 for support.

CONVENTIONS USED IN THIS MANUAL
For your safety, this manual uses the following definitions and signal words to identify hazards:

• DANGER – Indicates a hazardous situation which, if not avoided, will result in death or serious injury. This signal word is limited to the most extreme situations.
• WARNING – Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
• CAUTION – Indicates a hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
• NOTICE – Indicates an unsafe practice which, if not avoided, may result in product or property damage. Also used for general alerts.
• A DANGER Failure to comply with specified requirements and minimum clearances can be dangerous and may become a fire hazard. Additional clearances may be necessary for accessibility or to comply with local codes. A DANGER This appliance is equipped with a  three-prong grounding plug for your protection against electric shock hazard and should be plugged into a grounded, three-prong power supply capable of supplying proper voltage and amperage. @WARNING USE ON LEVEL, NON-COMBUSTIBLE FLOORING ONLY
• DANGER Carbon Monoxide (CO) is a poisonous gas that cannot be seen nor smelled and can result in fatality within minutes. Not for use in residential living areas. Only use this product in a well-ventilated area. Provide a minimum of 2.55 square feet (0.27 square meters) of ventilation to the outdoors into the operation area at the unit height level. The first symptoms of carbon monoxide asphyxiation are similar to that of the flu: headaches, dizziness, and/or nausea. These symptoms could be caused by a malfunction of the Radiant Heater. In this case go outside immediately. Have the Radiant Heater repaired before continuing operation of the heater. Some people are more affected by the effects of carbon monoxide than others, especially pregnant women, those who suffer from heart or lung disease, or people with anemia; also those who have consumed alcoholic beverages and those who are at high altitudes. Be sure to read and understand all of the warnings. Save this manual for future reference: it will provide you with instructions to operate your radiant heater safely and correctly.

WARNING

• Ceramic fiber material This appliance may contain ceramic fiber and/or fiberglass materials.
• Ceramic fiber materials, such as chamber liners, may contain carcinogenic particles (cristobalites) after exposure to heat. Airborne particles from fiberglass or ceramic fiber components have been listed as potentially carcinogenic by the State of California. Take the following precautions when removing, replacing and handling these items: Avoid breathing dust and avoid contact with skin or eyes. Wear long-sleeved, loose-fitting clothing, gloves, and eye protection. Use a NIOSH N95-certified respirator.
• This respirator meets requirements for protection from cristobalites. Actual job requirements or NIOSH regulations may require other or additional protection. For information, refer to the NIOSH website, http://www.cdc.gov/niosh/homepage.html
• To prevent airborne dust, thoroughly wet ceramic fiber with water before handling. Place ceramic fiber materials in a plastic bag and seal it for disposal. Avoid blowing, tearing, sawing, or otherwise causing fiberglass or ceramic fiber materials to become airborne. If such operations are necessary, wear extra protection to prevent yourself or others from breathing the dust.
• Wash work clothes separately from other laundry. Rinse clothes washer thoroughly afterwards to prevent contamination of other clothing. NOSH Find aid procedires Fve ayosure – irriante immediately Inhalation frach oir .

WARNING

NO GASOLINE
This product is designed for use with Diesel, No.2 heating oil, or kerosene ONLY!

• To avoid added risk of fire or explosion, never use gasoline, crankcase drainings, naphtha, paint thinners, alcohol, or any other unapproved fuels.
• Never use the heater in areas where aerosol cans, gasoline, paint thinner, or other highly flammable materials are stored.
• Visually inspect the heater before each use. Never use a heater that has been damaged, broken, or modified from the manufacturer’s specifications.
• Before filling the fuel tank, extinguish all nearby flames, including the radiant heater and wait for the heater to cool down.
• While filling the tank inspect the fuel lines and their junctions to check for fuel losses. Any losses or leaks must be repaired before resuming operation of the radiant heater.
• Fuel should always be stored in compliance with safety regulations.
• When you move or store the heater, maintain it in a level position in order to avoid fuel loss or drain the fuel into an appropriate receptacle.
• Keep children and animals away from the heater.
• Disconnect the heater from electrical power when it is not in use and has completed a post-purge cycle after power button has been placed in the OFF position.
• When it is controlled by another device (like a thermostat or a timer), the heater could turn itself on at any time. Please be aware of this and observe all safety precautions.Never operate the heater in unoccupied or unattended areas.
• Do not block vents or openings on any part of the heater at any time.
  When the heater is in use and connected to the power supply, it should never be moved, handled, or refilled and no maintenance should be performed on it.

in Canada
Installation of the unit shall be in accordance with the regulations of the authorities having jurisdiction. Refer to CSA standard 39-1962: Installation Code for Oil-Burning Equipment, for Recommended Installation Practice.

Safety Labels

WARNING READ MANUAL BEFORE USE

1. Never use gasoline or waste oil.
2. Never push RESET button more than twice. If the heater doesn’t start, follow the troubleshooting in manual
3. Never use in the presence of flammable vapors or dust.
4. Never unplug unit before allowing unit to cycle through the 5-minute post-purge cool-down period after turning unit off.
5. Do not touch the front or top of heater until completely cool.
6. Risk of shock: Unplug unit before removing the burner cover. To be used only in well-ventilated commercial-industrial occupancies. Not for use where exposed to the weather.
7. Never move heater while running.
8. Do not start heater after excess fuel has accumulated in the front dome chamber. Allow time to dry.
9. Do not operate the heater unattended. 10. Keep heater a minimum distance of 7 feet away in the front and 3 feet on both left and right sides from flammable and combustible materials.

CAUTION: Hot while in operation, Do not touch. Keep children, clothing and combustibles away.

SunFire: The most advanced, most durable portable multifuel radiant heaters made in the USA

Key Features

SunFire Radiant Heaters are easy to setup and maintain…
…so you can sit back and soak up the glow… season after season.

Specifications

FOR THE SF-80 OPERATING TEMPERATURE RANGE*: -20°F (-28.9°C) to 80°F (26.7°C)

WEIGHT
Tank empty: 85 lbs (38.6 kg); Tank full: 127 lbs (57.6 kg)

DIMENSIONS
L: 26” (66.1cm) W: 19.75” (50.2 cm) H: 27.75” (70.5 cm)

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIAL
Front: 84” (213 cm) Left/Right Side: 36” (91 cm)
Back: N/A Below: For use on non-combustible flooring or with a heat-rejecting mat

• FUEL REQUIREMENT: Diesel, No. 2 Heating Oil, Kerosene
• FUEL INPUT: 0.58 gal/h Diesel; 0.56 gal/h Kerosene
• FUEL TANK CAPACITY: 6 U.S. gallons (22.7 L)
• ELECTRICAL REQUIREMENT: 0.5A, 120V / 60Hz 1-Phase
• OPERATING TEMPERATURE RANGE*: -20°F (-28.9°C) to 80°F (26.7°C)

*Fuel-temperature considerations are necessary when operating in sub-freezing temperatures. See product manual sections NORMAL OPERATION and OPTIONAL ACCESSORIES for more information.

FOR THE SF-120

WEIGHT
Tank empty: 125 lbs (57 kg); Tank full: 220 lbs (100 kg)

DIMENSIONS
L: 33” (83.8 cm) W: 28.5” (72.4 cm) H: 33.75” (85.7 cm)

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIAL
Front: 84” (213 cm) Left/Right Side: 36” (91 cm)
Back: N/A Below: For use on non-combustible flooring or with a heat-rejecting mat

• FUEL REQUIREMENT: Diesel, No. 2 Heating Oil, Kerosene
• FUEL INPUT: 0.85 gal/h Diesel; 0.78 gal/h Kerosene
• FUEL TANK CAPACITY: 14.2 U.S. gallons (53.8 L)
• ELECTRICAL REQUIREMENT: 1.2A, 120V / 60Hz 1-Phase
• OPERATING TEMPERATURE RANGE*: -20°F (-28.9°C) to 80°F (26.7°C)

Getting Started

IDENTIFYING TERMS
Please familiarize yourself with the parts of the heater as they will be referred to throughout this manual

1. Power Cord
2. Fuel Tank
3. Fill Cap (SF-120)
4. Fuel Gauge (SF-120)
5. Fill Cap & Fuel Gauge (SF-80)
6. Fuel Pickup Hose
7. Fuel Return Hose
8. Fuel Filter Element
9. Fuel Filter Head
10.  Burner
11. Burner Cover
12. PRIME Switch
13. Controls (See Normal Operation section)
14. Lower Support Frame (SF-120)
15. Upper Support Frame
16.  Lifting Bracket (optional) (included with SF-120; ordered separately for SF-80)
17. Wheel x2
18. Foot x2
19. Adjustable Handle
20. Handle Locking Pin
21. Heat Shield
22. Dome Visor
23. Dome Guard
24. Dome Face
25. Tilt Adjustment Knob x2

PACKAGE CONTENTS

FOR THE SF-80
The SunFire SF-80 is shipped preassembled and ready for NORMAL OPERATION. No assembly is required, though adjustment of the levelling feet may be needed. To adjust the foot, loosen the locking nut on the threaded foot post and rotate the foot to adjust the height. Tighten the locking nut when finished.

FOR THE SF-120

Please review the package contents and ensure that all materials are present. If you find something is missing, contact SunFire for assistance. DO NOT RETURN THE HEATER TO THE STORE where it was purchased.

1. Heater Assembly
2. Lower Support Frame Leg Assembly
3. Lower Support Frame Axle Assembly
4. Dome Guard
5. Dome Visor
6. Optional Lifting Bracket
7. Optional Lifting Bracket Retainer x2
8. Leveling Foot x2
9. Foot-Adjustment Wrench
10. Wheel x2
11. Axle Cap x2
12. 1/4”-20 tpi x 1-1/2” Frame-Mount Bolts x4 (not shown)
13.  1/4”-20 tpi x 3/4” Lifting-Bracket Bolts x2 (not shown)
14. 1/4” Flat Washer x6 (not shown)
15. 1/4” Locking Washer x6 (not shown)
16. 1/4” Nut x6 (not shown)

17. 10 x 1/2” Visor Screw x6 (not shown)

18. Spare Parts (not shown)
19. Thermostat-connection Whip (not shown)
20. Operation & Service Manual (this booklet)

ASSEMBLY

FOR THE SF-120
When unpacking the unit, some assembly is required before initial use. This process can be completed individually, but a helper may be useful for some steps. Do not add fuel to the heater until the assembly process is complete. The following tools will be used in the assembly process:

• 7/16” Wrench
• 1/2” Wrench
• Mallet / Hammer
• 5/16” Powered Driver

TO ASSEMBLE THE UNIT

1.  Unpack the heater assembly onto a soft surface, like a rug or mat (or use a portion of the packaging), with room to work. Then, roll the heater sideways to invert it onto the work area, with the heater laying on its top. Do not lay the heater on the dome face at any time. Using a 7/16” wrench and a 1/2” wrench, locate and remove the two (2) nuts, locking washers, and spacers (not shown) from the bolts attaching the upper frame to the tank on the rear of the unit.

2. Discard the spacers and reuse the bolts, washers, locking washers, and nuts, plus two (2) each of the 1/4”- 20tpi x 1-1/2” frame-mount bolts and associated washers and nut included in the packaging to affix the leg assembly to the unit. Observe the correct arrangement of the fasteners and ensure the fasteners are securely tightened before proceeding.

3. When attaching the leg assembly to the heater, locate the two (2) leveling feet included in the packaging and screw them into the threads in the ends of the foot assembly frame.

4. Similarly to the leg assembly, locate and remove the nuts, locking washers, and spacers from the bolts attaching the upper frame to the tank on the front of the unit. Discard the spacers and reuse the bolts, washers, locking washers, and nuts, plus two (2) each of the 1/4”-20tpi x 1-1/2” frame-mount bolts and associated washers and nut included in the packaging to affix the foot assembly to the unit using the same fastener arrangement shown in the previous step. Ensure the fasteners are securely tightened before proceeding.

5. After attaching the axle frame to the heater assembly, feed the raised hub of the wheels onto the axle (flatter side of the wheels facing away from the fuel tank) and use a mallet or hammer to install the cap nuts provided in the packaging to the ends of the axle, retaining the wheels.

6. Carefully, right the unit onto its lower support frame and wheels by rolling it sideways. Do not lay the heater on the dome face at any time. Check the stability of the heater as it sits on a level floor. If the heater rocks or is otherwise unstable, rotate the leveling feet to stabilize the heater. When the heater is stable, use the angled wrench included in the packaging to tighten the locking nut of the leveling feet to the foot-assembly frame, securing the leveling-feet adjustment setting.

7. Use a 7/16” wrench or driver to remove the bolts at one side of the dome face and use them to loosely attach the dome guard to the front of the unit. Repeat this process to attach the other side of the guard, then tighten the fasteners on both sides.

8. With a 5/16” powered driver, use the visor screws provided to affix the dome visor to the top of the dome face. Start at one end of the visor and move along the length of the visor to shape it to the dome. Do not tighten the screws completely until all fasteners have been started, then go back and finish securing all screws.
   WARNING
   DO NOT operate the unit without the the dome guard and visor in place. These are important safety components and are required.

9. [OPTIONAL] Assemble the lifting bracket and use a 7/16” wrench and a 1/2” wrench to secure it with the bolt, washers, locking washers, and nuts provided in the packaging.
   The unit is now ready for normal operation.

Normal Operation

This section will cover normal orientation and operation of the SunFire SF-80 / SF-120.

TO ADJUST THE TILT ANGLE
Loosen the knobs on the sides of the unit to adjust the tilt angle of the dome face. Tighten the knobs when adjustment is complete. Return the tilt angle to it’s non-inclined position and tighten the adjustment knobs for storage or transport of the unit.

TO OPERATE THE HANDLE
The unit will ship with the handle secured in place by a hook and loop retaining strap (not shown). This should be left on the frame and reused when transporting the heater in the future. To raise the handle position, undo the retaining strap. Then, lift the handle.
Reuse the retaining strap to secure the handle in the lowered position when transporting the heater.

DANGER
When the heater is in use and connected to the power supply, it should never be moved, handled, or refilled and no maintenance should be performed on it. Allow the unit to cool completely before moving.

Normal Operation

CONTROLS
The unit’s controls are labeled and located on the burner cover.
OPERATION PROCEDURE
Keep the unit on a level, non-combustible surface at all times. If the unit is resting at a 25° angle or more, the tip switch will turn the heater off and/or prevent the heater from starting.

1. Add Diesel, No.2 heating oil, or kerosene to the fuel tank, if a need is indicated by the fuel gauge. Approved fuels can be mixed at any ratio.
2. Plug the unit’s power cord into a grounded extension cord capable of supplying proper amperage and position the heater in a well ventilated area that provides safe clearances.
3. Press and hold the PRIME switch (located on the back side of the burner) until the fuel system is filled with fuel and purged of air (pump becomes quieter, fuel begins to flow through the return line). NOTE: For a new unit, or if the heater stopped because of low fuel, additional priming cycles may be necessary.
4. Toggle the control switch to the ON position.
5. The blower will begin to operate and run for 15 seconds prior to ignition (pre-purge).
6.  After the burner ignites, the GREEN LIGHT on the control panel will illuminate, indicating that the burner is on and the flame sensor can see the flame.
7. If the heater shuts off unexpectedly and the RED LIGHT on the control panel is illuminated, the unit must be reset (by pressing the RESET button) before resuming operation. Do not reset the unit more than two (2) times without troubleshooting the root cause of the issue. (see Troubleshooting section)
8. When shutting down the heater, turn power switch to the OFF position but DO NOT UNPLUG THE HEATER. Allow the burner to complete the post-purge cycle (5 minutes) before disconnecting power.

For a new unit, the first hour of operation may produce light smoke and odor as dust and manufacturing lubricants are cleared from the system. This should dissipate with continued use.

DANGER
Do not attempt to RESET the primary control of the heater more than twice. Stop and troubleshoot the cause of the issue. Repeated attempts to reset the unit can cause a risk of fire.

WARNING
Allow the heater to complete its post-purge of heat and fuel vapors to reduce the risk of a fire hazard or damage to the unit.

OPERATION IN SUB-FREEZING TEMPERATURES
Diesel and No.2 heating oil can begin to solidify at temperatures below 32°F (0°C). Kerosene can be mixed with Diesel fuel / No.2 heating oil in the tank to lower the freezing point of the fuel. If the heater will regularly be used in an environment where the unit has been allowed to cool to below 0°F (-18°C), a fuel-filter heating band will be necessary. On an initial cold start, with the unit plugged in and the heating band allowed to warm for ~30 minutes, use the prime switch to circulate warm oil through the system for a couple of minutes prior to starting. Use of100% kerosene may also be necessary in this scenario.

Optional Accessories

FUEL-FILTER HEATING BAND

SunFire heaters can be fitted with a fuel-filter heating band to assist fuel flow in cold conditions.

HEATING BAND PLACEMENT
Slip the heating band securely around the filter element. Remove the heating band before servicing or replacing the filter element.

HEATING BAND CONNECTION
To connect the heating band, first unplug the heater from its power source and remove the cover from the burner housing (see Burner Service section). Feed the wire leads of the heating band through the grommeted opening in the underside of burner housing and refer to the wiring diagram in this manual to connect them to the terminal block. Replace the housing cover when finished. CAUTION
Do not use the fuel-filter heating band in temperatures above 40°F (4.4°C), as volatile vapors may form in the fuel system, resulting in a hazard and/or damage to the product.

THERMOSTATIC CONTROL
SunFire heaters can be connected to a thermostat to regulate the ambient temperature. Use a simple wall thermostat that does not require an external power source. Supplying power to the thermostat circuit will damage the primary control of the heater. Please use a basic, battery or mechanically- operated thermostat.

CAUTION
When controlled by another device (like a thermostat or a timer), the heater could turn itself on at any time. Do not leave the operation-control switch in the “ON” position when unattended.

THERMOSTAT WIRE CONNECTION
With the control switch in the OFF position, disconnect the thermostat-bypass connector on the side of the unit (white plug with red wire) and keep in a safe place for future use. Use the thermostat cable and connector included in the manual packet to connect the thermostat to the burner (R & W terminals on most thermostats). The thermostat may then be set to the desired ambient temperature and placed at your desired location, taking care not to route the thermostat cable near hot surfaces of the heater.

Maintenance & Service

Maintaining your heater is important for prolonging the life of the product and keeping it operating in peak condition. Inspect the heater before each use and return the unit to optimal condition before resuming normal operation. Perform regular maintenance on the heater at the beginning and end of each heating season.

WARNING
Any time a component or any part of the burner is disassembled or replaced for service or maintenance, perform a complete operational test after reassembly to verify that the heater operates correctly. Failure to verify proper operation could result in severe personal injury, death, or substantial property damage.

FILTER & FUEL TANK
The fuel filter and tank should be serviced annually, at a minimum, or whenever a clog or poor fuel quality is suspected. Over time, water and silt can collect in the fuel tank and should be removed by draining the tank.

REPLACING THE FUEL FILTER
The heater’s fuel filter should be replaced before each heating season, after seasonal or long-term storage of the unit, or whenever a clog or poor fuel quality is suspected. Being careful to catch and contain any fuel that may spill, rotate the filter element to separate it from the filter head. Replace the filter with a genuine SunFire filter element. Apply a small amount of clean oil to the rubber o-ring. Tighten the filter snugly after the o-ring contacts the filter head. Do not over tighten.

DRAINING THE FUEL TANK
The heater’s fuel tank should be drained after each heating season, before long-term storage or transport, or whenever poor fuel quality is suspected. Being careful and prepared to catch and contain the entire contents of the tank, use a 1/4” hex key to remove the drain plug from the tank and allow the contents of the tank to drain completely. Apply fresh thread sealant, replace the drain plug, and confirm that it has sealed properly upon refueling.

The heater’s fuel system will need to be primed after the unit’s fuel filter or tank is serviced, or when the heater has been run out of fuel. Use the PRIME switch on the back of the burner housing to prepare the heater for normal operation.

BURNER SERVICE
The burner assembly should be serviced seasonally, at a minimum, or whenever excess smoke is present or a clog or poor fuel quality is suspected. For inspection or service, the nozzle subassembly will need to be removed from the heater and the flame sensor, igniter electrode, and combustion chamber should be inspected.
Do not attempt to handle burner components unless the unit has been unplugged and cooled completely. Components can be hot and could cause severe personal injury.

TO SERVICE THE BURNER ASSEMBLY

1. Use a Phillips-head screwdriver to remove the four (4) screws securing the burner cover to the unit. Then, remove the burner cover.

2. Use a Phillips-head screwdriver to remove the screw securing the square access door closed.

3. Grab and pull the end of the ignition wires (not shown) to disconnect them from the electrode terminals. Then, slide the rubber wire grommets from the housing and move the wires aside.

   • SF-120 shown here. SF-80 internal components and locations differ slightly.
   • For the SF-80, disconnect the flame-sensor wires from the F1 & F2 terminals of the primary control (in addition to the ignition wires) to allow for removal of the nozzle-line assembly.

4. Use a 9/16” wrench to avoid rotation of the bulkhead fitting of the nozzle subassembly inside the burner box (circled area) and use a 7/16” wrench to remove the fuel line (outside the box). Then, loosen the knurled nut securing the nozzle subassembly to the burner housing.

5. Lift the side-retaining plate to rotate it on its hinge. Then, lift the rear of the nozzle subassembly and pull to remove the nozzle subassembly from the burner assembly. With the nozzle subassembly removed, use an inspection mirror to visually inspect the interior of the combustion chamber for signs of fuel buildup or missing portions of the insulation lining.
   Some visible cracks in the insulation material are normal. If portions of the insulation are broken or missing, replace the insulation before resuming operation of the unit. Contact SunFire technical service for assistance.

6. Inspect the flame sensor for dirt or damage. Use a soft, damp rag or cotton swab to clean the sensor. For the SF-80, remove the screw and flame-sensor bracket to clean the sensor eye. Disconnect the wires (not shown) from the F1 & F2 terminals of the primary control in order to replace the flame sensor.
   CAUTION
   If the flame sensor shows signs of damage, troubleshoot the unit to determine and correct the cause and replace the flame sensor before resuming operation of the unit.
   Contact SunFire technical service for assistance.

7. Using a 5/8” wrench, remove the nozzle, replace it with a new SunFire-OEM nozzle, and tighten the nozzle to 20 ft lb of torque to ensure a tight seal but avoid damage due to overtightening. Also, take care not to damage or disturb the igniter electrodes or metal spinner fins during this process. With the new nozzle in place, ensure that the electrode tips are aligned with the face of the nozzle. Use a slotted screwdriver or 1/4” driver to adjust the screw on the top of the electrode assembly to reposition the electrode, if necessary. Use a soft, damp rag to wipe any carbon buildup from the spinner and electrode.

If the electrode shows signs of damage or wear, replace the electrode assembly before resuming operation of the unit.

WARNING
Only use authentic SunFire parts. Inspect the nozzle adapter before replacing the nozzle. If the threads have been damaged or show score marks, replace the entire nozzle-line assembly. Contact your local SunFire dealer or SunFire technical service for assistance.
Confirm that the electrode tines are positioned properly before returning the nozzle subassembly to the burner.
When inspection and service of the burner components has been completed, reverse the disassembly process and return all assemblies to their factory position before resuming normal operation.

NOTICE
Use care when tightening the oil line fitting to oil tube extension. Tighten securely, but do not crossthread or overtighten.

GENERAL MAINTENANCE
Inspect the heater for damage and wear before each use. Do not attempt to operate a damaged heater. To make inspection easier, regularly use a soft, damp rag to clean the heater.
Seasonally, or after heavy use or transit, inspect the fasteners and connections, especially around the dome face and fuel hoses, and tighten any fasteners, hoses, or wires that may have loosened.

Maintenance & Service

FLAME ADJUSTMENT

Due to variations in nozzle tolerances, fuel quality, and geographical location, adjustments may be required periodically to maintain optimal operation.

FOR THE SF-80

DANGER

During this procedure, dangerous electrical voltage will be present at the wiring connections. Only qualified technicians should perform this procedure. Use proper safety equipment and practices. Only interact with the components described in the instructions during this procedure. Securely reattach the burner cover before resuming normal operation.

TO ADJUST THE FLAME

1. With the heater off, remove the burner cover and locate the fan-voltage regulator and white adjustment screw on the top of the burner-blower housing. If adjustment of the blower-fan voltage is needed, gently turn the screw with a small screwdriver to modulate the voltage. Use a voltage meter at the VDC terminals of the voltage regulator to measure the voltage supplied to the blower fan. Do not exceed 13 VDC.
2. Start the unit and watch it as it starts up. A small amount of white smoke at ignition is normal, but should not last more than a few seconds and should not be black. If the unit will not establish a flame, or the flame is very poor, set the voltage regulator to the minimum setting (~10 VDC) and reattempt to start the unit. If the unit still will not establish a flame, it may require service. (Refer to the Troubleshooting section)
3.  When the heater has established a flame, slowly increase the voltage to increase the air supply, if needed, until no flame or smoke is emitted from the dome face. Allow the unit to run for 5 minutes, to warm up.
4.  If the voltage is set to minimum (~10 VDC), or approaches 13VDC, but will not bring the flame into adjustment (especially after changing the nozzle), the fuel pump may need to be adjusted. Return the voltage regulator to the minimum setting. Then, use a screwdriver (hex key on some models) to slowly adjust the pump-flow-rate screw (near the pump intake). The counter-clockwise adjustment reduces fuel flow. Clockwise adjustment increases fuel flow. Only minor adjustments of ~1/4-turn or less should be required.
5.  When the heater is warm, the dome face should have an orange glow with no smoke or flame emitted. If the dome face does not glow after the heater has warmed up, the flame is weak and needs less air or more fuel. If the flame is smoky, it needs more air or less fuel. Use the voltage regulator and pump adjustment to bring the warmed heater’s flame into adjustment.
6. When the flame is well adjusted, turn the heater off and let it complete its cooldown cycle. Then, restart the heater and confirm the flame adjustment on startup. Repeat the process if necessary. Replace the burner cover before resuming normal operation.
7. Inspect the flame regularly, when the heater is completely warm or is starting from completely cool, to ensure that it is well adjusted.
   Whenever operating conditions change substantially (i.e.: temperature, altitude, fuel mixture), check the flame and adjust it if needed.

DANGER
During this procedure, dangerous electrical voltage will be present at the wiring connections. Only qualified technicians should perform this procedure. Use proper safety equipment and practices. Only interact with the air shutter and set screw during this procedure. Securely reattach the burner cover before resuming normal operation.

TO ADJUST THE FLAME

1. With the heater off, remove the burner cover and locate the air shutter and set screw on the side of the burner-blower housing. If adjustment of the air shutter is needed, use a Phillips-head screwdriver to loosen the set screw and rotate the shutter open or closed. Re-tighten the set screw to secure the air shutter in its newly-adjusted position.
2. Start the unit and carefully watch the unit as it starts up. A small amount of white smoke at ignition is normal, but should not last more than a few seconds and should not be black. If the unit will not establish a flame, or the flame is very poor, set the air shutter to 50%-open and reattempt to start the unit. If the unit still will not establish a flame, it may require service. (Refer to the Troubleshooting section)
3. When the heater has established a flame, slowly open the air shutter, if needed, until no flame or smoke is emitted from the dome face. Allow the unit to run for 5 minutes, to warm up.
4. If the air shutter is set to 90% open or closed and will not bring the flame into adjustment (especially after changing the nozzle), the fuel pump may need to be adjusted. Return the air shutter to 50% open. Then, use a screwdriver (hex key on some models) to slowly adjust the pump-flow-rate screw (near the pump intake) until the flame is adjusted. The counter-clockwise adjustment reduces fuel flow. Clockwise adjustment increases fuel flow. Only minor adjustments of ~1/4-turn or less should be required.
5. When the heater is warm, the dome face should have an orange glow with no smoke or flame emitted. If the dome face does not glow after the heater has warmed up, the flame is weak and needs less air or more fuel. If the flame is smoky, it needs more air or less fuel. Use the air shutter and pump adjustment to bring the warmed heater’s flame into adjustment.
6. When the flame is well adjusted, turn the heater off and let it complete its cooldown cycle. Then, restart the heater and confirm the flame adjustment on startup. Repeat the process if necessary. Replace the burner cover before resuming normal operation.
7. Inspect the flame regularly, when the heater is completely warm or is starting from completely cool, to ensure that it is well adjusted.

Whenever operating conditions change substantially (i.e.: temperature, altitude, fuel mixture), check the flame and adjust it if needed.

WIRING DIAGRAM (HIGH VOLTAGE)

WIRING DIAGRAM (LOW VOLTAGE)

Troubleshooting

If power is present but AMBER light is off, replace bulb.

Primary control safety tripped (RED light illuminated)/primary control defective| Reset/test components, replace if needed. Contact SunFire or your local dealer.
Flame sensor is sensing light (GREEN light on) / defective| Point the dome face away from any bright light sources. If problem persists, contact SunFire or your local dealer.
Thermostat circuit is OPEN| Be sure the thermostat jumper is securely connected. If us- ing a thermostatic control, be sure it is connected properly and set to call for heat.
Tip switch contacts are open| If plugged in and AMBER light is on. Make sure SunFire unit is level. If level, tip switch may be defective.
 Attempts to fire but does not establish a flame| Unit is not primed| Use the PRIME switch to fill the fuel system.
Clogged nozzle| Replace the nozzle.
Dirty fuel filter| Change the fuel filter.
Air bubble in fuel line| Use the PRIME switch to clear the fuel system of air.
Suction Leak| Tighten all fuel-pickup pipe fittings and make sure the fuel filter is tightened snugly to the filter head.
Ignition system defective| Replace defective component.
Fires and then persistently fails within 30 seconds| Flame sensor is misaligned / dirty / defective| Clean flame sensor with a soft, damp cloth and confirm that it is oriented toward the combustion chamber when in operational position. Replace if defective.
Fires and then fails after 30 seconds / Heater experiences intermit- tent shutdown

__

NOTE: If the pump sounds loud at times during normal operation (like during initial priming), this typically indicates either a suction leak or air bubble in the fuel line.

| Air bubble in fuel line| Use the PRIME switch to clear the fuel system of air.

If the problem persists, remove the fuel filter and fill it with fuel. Then, reinstall the filter and reattempt priming.

Suction Leak| Tighten all fuel-pickup pipe fittings and make sure the fuel filter is tightened snugly to the filter head. Do not over-tighten.
Dirty fuel filter| Change the fuel filter.
Clogged nozzle| Replace the nozzle.
Contaminated fuel supply| Drain tank from plug, clean and fill with clean fuel.
Improper power supply| Check power supply. If using a generator, run generator for 20 minutes and retry. If using an inverter, try a clean power supply. Try different power supply.
5. Black smoke or whisking flames protrude through holes in dome face

(Light flame whisking may occur at cold start but should dissipate quickly)

| Nozzle is dirty or clogged| Replace the nozzle.
Flame needs adjustment| See Flame Adjustment section.
6. Small flame/low heat output| Flame needs adjustment| See Flame Adjustment section.
Dirty fuel filter| Change the fuel filter.
Clogged nozzle| Replace the nozzle.
Fuel pump defective| Contact SunFire or your local dealer.

If your issue was not described here, or for further assistance, please contact your local AUTHORIZED SUNFIRE DEALER, find more information at sunfireheater.com/support or call the manufacturer directly at 855-251-1649.

Warranty & Legal Information

WARRANTY INFORMATION
Rock Energy Systems, LLC (SUNFIRE) warrants that its Heaters and component parts will be free from defects in material and workmanship for a period of two [2] years from the date of purchase when properly assembled, operated, and maintained in accordance with the assembly and maintenance instructions, safety guides and labels contained with each unit. If any component proves defective in either material or workmanship during the limited warranty period, SUNFIRE at its option, may repair the defective part or equipment or replace the equipment or relevant parts. Proof of purchase and warranty qualification must be established at time of all claims.
BILL OF SALE: A copy of the bill of sale must be provided at time of return.

CLAIM PROCEDURE: Contact the manufacturer at 855-251-1649 or an AUTHORIZED SUNFIRE DEALER for all technical support and claims. You may also visit sunfireheaters.com/warranty
This limited warranty does not apply to heater, component or replacement part damage resulting from incorrect assembly, misuse, abuse, accident, act of God, neglect, mishandling, contaminated fuel, modification, incorrect environments, or wear from ordinary use.
The warranty set forth above is the exclusive warranty provided by SUNFIRE and all other warranties, including any implied warranties or merchantability or fitness for a particular purpose, are expressly disclaimed. In the event any implied warranty is not hereby effectively disclaimed due to operation of law, such implied warranty is limited in duration to the duration of the applicable warranty stated above. The remedies set forth above are the sole and exclusive remedies available hereunder. SUNFIRE will not be liable for any incidental or consequential damages directly or indirectly related to the sales, handling or use of the equipment, and in any event SUNFIRE in connection with the equipment, including for claims based on negligence or strict liability, is limited to the purchase price.

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TRADEMARKS
The SUNFIRE logo is a trademark of Rock Energy Systems, LLC. All other brand or product names mentioned are the registered trademarks or trademarks of their respective owners.

COPYRIGHT
Copyright © 2023 Rock Energy Systems, LLC. All rights reserved. No part of this publication may be reproduced, or distributed without the prior written permission of Rock Energy Systems, LLC. Subject to change without notice.

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Rock Energy Systems, LIC 4109 Capital Circle, Janesville, Wl 53546 SunFireHeaters.com SUNFIRE est une marque déposée de Rock Energy Systems, ILC

References

• Resources | Radiant Diesel Heater Information | SunFire
• SunFire | Quiet & Odorless Radiant Heaters - Dual Fuel
• SunFire | Quiet & Odorless Radiant Heaters - Dual Fuel
• Register Your Sunfire Heater | Sunfire Heaters
• SunFire | Quiet & Odorless Radiant Heaters - Dual Fuel

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