Installation and Operation Manual
TFTN 085-199
34
The initial lighting of the boiler must be performed by a licensed Gas Technician. Failure to
follow instructions may result in property damage, serious injury or death.
•
Ensure the boiler is wired in accordance with this manual.
•
Ensure the gas shutoff valve is turned on, and that the gas system has been fully tested for leaks.
•
Ensure the system is completely filled with water, and that ALL the air is purged out.
•
Ensure the Exhaust and Air Intake piping is completely installed in accordance with this manual.
Allow primers/cements to cure for 8 hours prior to Start-up. If curing time is less than 8 hours,
first
perform Steps 2 through 6 of
Mandatory Pre-commissioning Procedure for Plastic Venting
in
Section 4.0.
Failure to follow these instructions can result in explosion, serious injury or death.
Initial Start-Up
1.
Turn on power to the boiler and turn-up the Thermostat(s). The boiler should run through a purge, and combustion
should occur. (The control system has a built-in ignition retry, allowing the system to try two three times before locking
out.)
2.
With the unit operating at Max Power (100%), verify that the gas line pressure is 3.5-10.5
” WC
for Natural gas, and 8-
13
” WC
9.0 GAS VALVE AND BURNER SET-UP
3.
Using an appropriate Oxygen (O
2
) or Carbon Dioxide (CO
2
) analyzer, take a sample of the flue gas. The sample must fall
within the acceptable ranges for CO
2
specified in Table 9-1.
4.
Perform at least three ignitions in succession to ensure proper operation.
5.
After the three successive ignitions, unplug the flame detection electrode, and allow the unit to cycle again. The flame
safety system will allow the unit to go through 2
ignition cycles before going to “
Fault 501
–
No Flame detected
”
. Once
you have confirmed this behavior, reinstall the wire on the electrode, reset the Lockout and reconfirm proper lighting.
The flame detection electrode is located in the burner plate; it has a single black wire connected
to it. DO NOT remove the red spark cable from the ignition electrode (also located in the burner
plate); this device is used for spark ignition and produces 14,000 volts potential which would result
in an EXTREME ELECTRICAL SHOCK possibly causing serious injury or death.
If the unit fails to light consistently and smoothly, contact NTI for technical assistance at 1-800-
688-2575. Never allow the boiler to operate if the ignition or operation of the burner is rough or
erratic. Failure to follow these instructions may result in serious injury or death.
Re-lighting Unit
1.
Stop and read these instructions very carefully.
2.
Set the thermostat to the lowest setting, and then turn off all power to the boiler.
3.
This boiler does not have a pilot. It is equipped with an ignition device that automatically lights the burner. Do not try
to light the burner by hand.
4.
Turn the gas shutoff valve to the off position, and then remove the front cover.
5.
Wait five (5) minutes to clear out
any gas. Then check for gas, including near the floor. If you smell gas “Stop” and
follow “B” above
(see
FOR YOUR SAFETY, READ BEFORE OPERATING
). If you do not detect any gas proceed to the next
step.
6.
Turn the gas shutoff valve to the on position, wait an addition five (5) minutes and check for gas.
7.
Replace the front cover.
8.
Set the thermostat to the highest setting, and then turn on all power to the boiler.
9.
Ignition sequence is automatic, combustion will occur after a brief fan purge. Ignition will retry 3 times.
10.
If ignition does not occur, “Turn off the gas and electricity to the
boiler
” and contact a
qualified service technician, or
gas supplier.
Turning Off the Boiler
1.
Set the thermostat to the lowest setting, and then turn off all power to the boiler.
2.
Turn the gas shutoff valve to the off position.
