Knight WH- 286, Руководство по установке и эксплуатации

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63
Installation & Operation Manual
10
Start-up
(continued)

Check vent piping and air piping
1. Check for gastight seal at every connection, seam of air
piping, and vent piping.
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 50 of this manual (connecting gas
supply piping).
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.

Propane boilers – verify conversion
1. Verify propane conversion has been completed per the
Propane Conversion instructions.
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.
Check flame and combustion
1. Turn the main power off to the boiler by placing the
“On/Off” switch in the OFF position.
2. When using PVC/CPVC remove the 1/2" combustion
plug from the tee supplied in the installation kit. For
all other venting options, 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 by placing the “On/
Off” switch in the ON position.

WARNING

WARNING

WARNING

WARNING
Knight Wall Hung Fire Tube 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 LP venturi and any additional
components provided in the LP conversion
kit (Models WH56 - WH286 only), or
by installing a propane orifice (Model
WH400 only) (see pages 12 and 13). In order
to operate on LP gas, these components
MUST BE installed. Failure to comply
could result in severe personal injury,
death, or substantial property damage.
Table 10B Flue Products Chart
8. Once the combustion analysis is complete, test the safety
shutoff device by turning the manual shutoff switch to
the OFF position and ensuring that the boiler shuts
down and registers an alarm. Turn the manual shutoff
switch to the ON position and reset the control.
9. Turn the main power off to the boiler and re-install the
1/2" combustion plug or replace the flue temperature
sensor into the flue pipe connection.
10. Place the boiler back into normal operation.
You must replace the flue gas temperature
sensor / 1/2" combustion plug (depending
on venting option) to prevent flue gas
spillage into the room. Failure to comply
could result in severe personal injury,
death, or substantial property damage.

WARNING
Natural Gas
Input
Rate
Target Range
CO
2
O
2
CO
2
O
2
High Fire 9.2% 4.5% 9.0% - 10.5% 2.1% - 4.8%
Low Fire 9.0% 4.8% 8.8% - 9.5% 3.9% - 5.2%
Please note that the brackets ([]) denote
screen status.
NOTICE
4. Place the boiler into the active position by pressing the
RIGHT SELECT [ON] key (FIG. 11-1, page 75).
5. Locate the pinhole button above the RESET button on
the display board (FIG. 11-1). Insert a thin wire (such as
a paper clip) into the hole and press the button once and
hold for 5 seconds to place the boiler into Service Mode.
In Service Mode the boiler will fire at ignition speed and
will then modulate up to full fire.
6. Insert the probe from a combustion analyzer into the hole
left by the removal of the 1/2" combustion plug or the flue
temperature sensor.
7. Once the boiler has modulated up to full fire, measure
the combustion. The values should be in the range listed
in Table 10B below. The CO levels should be less than
200 ppm for a properly installed unit.
If the combustion is not within the specified range,
reference the Troubleshooting Section of the Knight Wall
Hung Fire Tube Boiler Service Manual for possible causes
and corrective actions.
Propane
Input
Rate
Target Range
CO
2
O
2
CO
2
O
2
High Fire
10.8% 4.5% 10.5% - 11.5% 3.5% - 5.0%
Low Fire
10.5% 5.0% 10.0% - 11.0% 4.2% - 5.8%