Sunfire Sf-150 Radiant Heater User Manual

SF-150 Radiant Heater
User Manual

SF-150 Radiant Heater

HELPFUL SERVICE MANUAL IMAGES

FIGURE 1-1 Burner Housing/Control Box

FIGURE 1-2 Burner Pressure Valves

Note: Turn right for more fuel flow and left for less fuel.

FIGURE 1-3 Igniter Assembly

Note: Loosen screws and turn clamps to open igniter assembly.

FIGURE 2-1 CAD Cell

FIGURE 2-2 Inside igniter box

Note: If there is excessive dust while running the SunFire, the inside area of the igniter box should be inspected and cleaned periodically.
Dust can build and causing the unit to turn of prematurely from dust build up on the CAD cell, which will shut the unit off for safety as the flame will not be visible and the  electrodes may not receive a proper spark If igniters are dirty. If dirty, simply clean with cloth.

FIGURE 3-1 Air Band

Note: The Air band should be set to approximately 1.25 – 1.5. Reducing the air band to a lower level will reduce the amount of airflow to the flame giving a higher  concentration level of fuel that will raise the temperature of the SunFire. However, if reduced too low, it can cause whisking – see Figures 4-1&2 for examples. Reducing too  low can become dangerous. This can easily be solved by increasing the amount of air within the flame by increasing the level of the air band.
If the air band level is set too low, upon start up, you may notice some smoke and a more noticeable smell of diesel.

FIGURE 4-1 Primary Control

Note: Will blink for a second before the green flame sense light turns no. This simply let’s you know the unit has been turned on and will be calling for heat to produce a flame.

FIGURE 4-2 Primary Control

Note: A green light that blinks indicates potential issues with the flame not running efficiently. Check symptoms and causes on previous pages. If green light remains solid,  the flame is running correctly. If flame gets just a little worse, it will shut the heater off. It will auto-restart one more time and if it happens again,it will go into lockout and  you will need to hit the reset button to restart.

FIGURE 4-3 Primary Control

Note: If red “locked out” light is on, the control has failed to sense a flame after two attempts to fire and the reset button must be pressed before attempting to start again.  When unit is turned on and does not fire on first attempts, this light will blink for 45 seconds. A 2nd attempt will be made and if no flame is sensed, the light will turn solid  until the reset button is pushed.

FIGURE 5-1 Minor Whisking

Note: It is recommended to increase the air band setting to approximately 1.50 and reduce the fuel flow on the high pressure valve if necessary.

FIGURE 5-2 Severe Whisking

Warning: This is can be dangerous at these levels. It is recommended to immediately increase the air band setting to approximately 1.50 and reduce the fuel flow on the high  pressure valve.

FIGURE: 6-1 View Inside Cone of Nozzle/Flame Assembly

Note: It is important that the nozzle and electrodes remain free from excessive build-up. Clean if necessary or replace nozzle. It is critical to never run the unit without the  burner cone in place to produce a proper flame.

FIGURE: 7-1 Copper fuel line in Burner Assembly