Final checks before starting the boiler

10 Start-up(continued)

Final checks before starting the boiler

 Read the Knight Wall Mount Service Manual to

familiarize yourself with SMART SYSTEM control

module operation. Read this manual, page 60 for proper

steps to start boiler.

 Verify the boiler and system are full of water and all

system components are correctly set for operation.

 Verify the preparation procedures of Section 10, pages 57

and 58 have been completed.

 Fill the vent condensate trap with water (removing the

retaining screw in order to remove the 2 inch PVC cap

Installation & Operation Manual

Check vent piping and air piping

1.Check for gastight seal at every connection, seam of air piping, and vent piping.

WARNING Venting system must be sealed gastight to prevent flue gas spillage and carbon

monoxide emissions, which will result in severe personal injury or death.

Check gas piping

1.Check around the boiler for gas odor following the procedure on page 48 of this manual (connecting gas supply piping).

with the switch located at the top of the trap). Replace

the cap. Press the cap onto the trap until the cap makes

contact with the drain. Replace the retaining screw.

 Verify electrical connections are correct and securely

attached.

 Inspect vent piping and air piping for signs of deterioration

WARNING

If you discover evidence of any gas leak, shut down the boiler at once. Find the leak source with a bubble test and repair immediately. Do not start the boiler again until corrected. Failure to comply could result in severe personal injury, death, or substantial property damage.

from corrosion, physical damage or sagging. Verify air

piping and vent piping are intact and correctly installed

per this manual.

Propane boilers – verify conversion

1.Verify propane conversion has been completed per the Propane Conversion instructions.

Start the boiler

1.Read and follow the Operating instructions in FIG. 10-2, page 60.

If boiler does not start correctly

1.	Check for loose connections, blown fuse or service switch
	off?
2.	Is boiler water temperature above 200°F?

WARNING

DO NOT adjust gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

3.	Is thermostat set below room temperature?
4.	Is gas turned on at meter or boiler?
5.	Is incoming gas pressure less than 4 inches w.c.?

If none of the above corrects the problem, refer to the Troubleshooting Section of the Knight Wall Mount Service Manual.

Check system and boiler

WARNING

Knight wall mount boilers are typically shipped ready to fire on natural gas. Check boiler rating plate to determine which fuel the boiler is set for. If set to natural gas, it may be converted to LP by installing an orifice (see page 13). In order to operate on LP gas, an orifice MUST BE installed. Failure to comply could result in severe personal injury, death, or substantial property damage.

Check water piping

1.Check system piping for leaks. If found, shut down the boiler and repair immediately. (See WARNINGS on pages 57 and 58 (startup) regarding failure to repair leaks.)

2.Vent any remaining air from the system using manual vents. Air in the system will interfere with circulation and cause heat distribution problems and noise.

Check flame and combustion

1.Turn the main power off to the boiler.

2.Remove the flue temperature sensor from the flue pipe connection. Note: Combustion measurements will be made at this point.

3.Turn the main power on to the boiler.