Trinity
│
Installation and Operation Instructions
Tx Series
32
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 Vent and Air-inlet 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
Each time the power is turned on to the boiler, the control will go through a “de-air” sequence designed to
purge air from the boiler. The de-air sequence takes 7 minutes to execute, during which time the circulators
will be operating in a cyclical manner and the burner will not attempt to function. Once the de-air sequence
has been executed at least once, subsequent de-air sequences can be bypassed by holding the “OK” button
until “de-Air” is no longer displayed on the screen; see Section 17.0 for more details.
1.
Turn on power to the Trinity Tx 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 at least
three times, before locking-out.)
2.
With the unit operating at full capacity, verify that the gas line pressure is 4-10.5 inches w.c. for Natural gas,
and 9-13 inches w.c. for Propane (See Section 9.0 for details).
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
(see Section 9.0 for details).
4.
Perform at least three ignitions in succession to ensure proper operation.
5.
After the three successive ignitions, unplug the flame sensor and allow the unit to cycle again. The flame
safety system will allow the unit to go through 5 ignition cycles before going to “Loc 1”. Once you have
confirmed this behavior, reinstall the wire on the flame sensor, press the reset button and reconfirm proper
ignition.
The flame sensor is located in the burner door on the left-hand side; it is the electrode
without
the spade terminal for the ground wire. DO NOT remove (or touch) the cable
on the right-hand side while the power is on; this device is used for spark ignition and produces 20,000 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 don’t
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.
