ENERGY KINETICS EK1C, Installation & Service Manual

Page: 43 / 75

Accel CS Boiler - Gas Heat - Eighth Edition – January, 2015 42
Outdoor Temperature Sensor Selection
The Sola boiler control must have an outdoor temperature sensor connected in order for the outdoor temperature reset
feature to work. The Accel CS boiler comes standard with a wired outdoor temperature sensor and is configured at the
factory to work with the wired outdoor temperature sensor.
If outdoor temperature reset is not required, then the wired outdoor sensor does not need to be connected and the Sola
boiler control should be instructed using the display to not expect the outdoor sensor.
If the optional wireless outdoor temperature sensor is being used, then the Sola boiler control should be instructed using
the display to read the outdoor temperature from the wireless outdoor sensor.
PREPARE FOR START UP
DANGER: MAKE CERTAIN THE FOLLOWING REQUIREMENTS HAVE BEEN SATISFIED BEFORE START UP:
1. The boiler and piping are completely filled with water and pressurized to between 12 and 20 psi.
2. Re-check all wiring to ensure that it is correct and in accordance with appropriate wiring diagrams and codes.
3. Verify that the intended fuel gas matches the labeling on the boiler.
4. Gas supply is connected to burner. Gas supply lines and shut-off valves are open.
5. All gas lines, including factory connections, are leak-checked and purged.
6. Inspect the condensate trap, verify ball is in place and drain tube connected.
7. Venting system properly installed. All joints are secured and sealed.
8. Combustion air supply is available and sufficient.
WARNING: Double check the supply gas pressure at the valve.
The gas control valve is provided with a pressure tap/nipple of 9 mm OD (for 5/16” ID hose) at the inlet and outlet side.
Refer to the photo in the GAS VALVE DESCRIPTION section for the location of the pressure tap. To check the inlet gas
pressure, first close the manual gas service valve. Next turn the valve screw inside the inlet tap/nipple a half turn
counterclockwise to open it and slip the tubing for your gauge over tap/nipple. After attaching the gauge, open the gas
service valve and take your reading. Refer to the
Gas Supply Pressure section for allowable readings.
If the inlet gas pressure passes this test, the unit is ready for further testing or use. Make sure that the screw inside the
gas valve tap/nipple is re-tightened after removing the gauge tubing. If the gas pressure is outside of the required range,
contact the gas utility or gas supplier to correct this problem before proceeding with run testing or use of the boiler.
START UP PROCEDURE
Turn the boiler power switch on. All the Condensing Energy Manager output lights should come on briefly. The burner
relay should close briefly, and after a few seconds, the Condensing Energy Manager should show one red light labeled
POWER at the top of the bar graph.
1. Adjust a thermostat to call for heat. A Tx LED and the corresponding Zx LED will light on the Condensing Energy
Manager and the Heat/Hot Water LED will light at the same time. If not, check the thermostat wiring to the Condensing
Energy Manager.
2. The fan will come on shortly to purge the boiler of any unburned gas mixture.
3. Check for burner ignition. If gas piping is not well purged, then several tries at light off may be required to clear air from
gas piping.
4. If the burner doesn’t light, the Sola control will try 5 more times and then the control will go into lockout and the display
will read “lockout alarm 109”.
5. After burner light off, water temperature and flue gas temperature will start to rise. A slight odor is common on initial
light off as combustion chamber and converter surfaces warm for the first time.
6. Watch the pressure and temperature gauge as the burner starts. The pressure on the gauge should remain constant
and between the minimum and maximum required pressure (12 and 30 psi) during this time. The temperature should
start to rise.
7. NOTICE: Perform carbon monoxide test two minutes after light off. If the carbon monoxide exceeds 400 ppm air-free
after two minutes of operation, shut off boiler immediately and repeat "Prepare for Start Up" checklist. ( See
“Air-free method of measuring CO”)
8. Allow system to run about 15 minutes before testing and recording burner operation. ( See "Gas Burner Operation")