NTI TRINITY Ts80, Инструкция по установке и эксплуатации

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Trinity Ts │
Installation and Operation Instructions Ts Series
26
9.0 GAS VALVE AND BURNER SET-UP
Set-up of the Trinity Ts gas valve must be performed by a licensed Gas Technician.
Failure to perform the set-up correctly may result in incorrect operation, component
failure, property damage, serious injury or death.
Gas Line Pressure
The boiler gas valve is equipped with a line pressure test port, see Figure 9-1. Use the following procedure to
measure the gas line pressure to the boiler to ensure if falls within the range given in Table 9-1:
1. Turn the supply of gas to the boiler off.
2. Open the bleed screw of the line pressure test port approximately 1-1/2 turns. This port is directly
connected to the gas line feeding the boiler. See Figure 9-1.
3. Force 1/4
"
ID tubing over the housing of the line pressure test port; install the other end of the tubing to an
appropriate line pressure test gauge or manometer. Ensure both ends of the tubing make a tight connection.
4. Open the supply of gas to the boiler and check for gas leaks.
5. Observe the line pressure under static conditions and compare it to Table 9-1. The pressure will be greatest
under static conditions.
6. With all other gas boilers in the applications running, operate the burner to the maximum firing rate (See
Table 9-2) and compare the observed line pressure with Table 9-1. The pressure will be lowest during the
maximum flow of gas.
7. Adjust the gas line pressure to ensure the parameters in Table 9-1 are attained under all conditions. If
possible adjust the line pressure to the "Nominal/Desired" value listed in Table 9-1, while the unit is
operating at the maximum modulation rate, see Table 9-2.
8. Continue observing the gas line pressure until the completion of the combustion analyses, incase
adjustments need to be made.
9. Complete pressure testing, then return the bleed screw of the Line Pressure Test Port to the closed position.
The line pressure is a function of the gas supply and is affected solely by field provided
parameters such as line size and regulator settings. Under no circumstances can the boiler
gas valve influence or be used to adjust the gas line pressure.
Failure to close the bleed screw of the Line Pressure Test Port will cause a severe leakage
of gas, resulting in a fire or explosion causing property damage, serious injury or death.
Table 9-1 Line Pressure and Combustion Parameters
Line Pressure (inches wc) CO
2
(%)*
Gas
Nominal/Desired Min. Max. Min. Max.
CO (ppm)
Max.
Natural
7 4 10.5 8.5 9.5 175
Propane
11 8 13 10 11 175
*Note: it is permissible to have higher CO
2
values with the burner operating at the minimum modulation rate.
Table 9-2 Minimum and Maximum Modulation Rates
Model Min. Modulation Rate (RPM) Max. Modulation Rate (RPM)
Ts80 1700 6400
Carbon Monoxide
- Never leave the unit operating while producing Carbon Monoxide
(CO) concentrations in excess of 175ppm. Failure to follow this warning may result in
serious injury or death.
Manifold Pressure
- DO NOT adjust or measure the Manifold Pressure of the boiler.
Correct manifold pressure is factory set. Field adjustment could result in improper burner
operation resulting in fire, explosion, property damage or death.
Adjustments to the Throttle screw may only be made by a qualified gas technician, while
using a calibrated combustion analyzer capable of measuring CO
2
and CO. Adjustments
may only be performed if the gas line pressure is maintained above minimum levels throughout the duration of
the test, see Table 9-1. Failure to follow these instructions may result in serious injury or death.