Trane IntelliPak SAHL Series Скачать руководство пользователя страница 157

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RT-SVX36G-EN

157

Unit Start Up

–

Variable Frequency Drive (100% Output, if applicable)

–

RTM Occ/Unocc Output (Unoccupied)

–

Heat Stages 1 & 2 (On)

–

Turn the 115 volt control circuit switch 4S24 located in the heater control panel to the “On”
position.

–

Open the manual gas valve, located in the gas heat section.

2. Once the configuration for the appropriate heating system is complete, press the NEXT key

until the LCD displays the “Start test in __Sec.” screen. Press the + key to designate the delay
before the test is to start. This service test will begin after the TEST START key is pressed and
the delay designated in this step has elapsed. Press the ENTER key to confirm this choice.

3. Press the TEST START key to start the test. Remember that the delay designated in step 2 must

elapse before the system will begin to operate.

4. Once the system has started, check the appearance of the flame through the sight glass

provided on the front of the heat exchanger. In appearance, a normal flame has a clearly defined
shape, and is primarily (75%) blue in color with an orange tip.

5. Check the manifold gas pressure by using the manifold pressure port on the gas valve. Refer

Table 52

for the required manifold pressure for high-fire operation. If it needs adjusting,

remove the cap covering the high-fire adjustment screw on the gas valve. Refer to

Figure 84

for

the adjustment screw location. Turn the screw clockwise to increase the gas pressure or
counterclockwise to decrease the gas pressure.

6. Use a carbon dioxide analyzer and measure the percentage of carbon dioxide in the flue gas.

Refer to the illustration in

Figure 83

. Take several samples to assure that an accurate reading

is obtained. Refer to

Table 52

for the proper carbon dioxide levels. A carbon dioxide level

exceeding the listed range indicates incomplete combustion due to inadequate air or excessive
gas.

Combustion Air Adjustment (O

)

Use an oxygen analyzer and measure the percentage of oxygen in the flue gas. Take several
samples to assure an accurate reading. Compare the measured oxygen level to the combustion
curve in

Figure 84, p. 159

. The oxygen content of the flue gas should be 4% to 5%. If the oxygen

level is outside this range, adjust the combustion air damper to increase or decrease the
amount of air entering the combustion chamber. Refer to

Figure 87, p. 162

for the location of the

combustion air damper.

8. Recheck the oxygen and carbon dioxide levels after each adjustment. After completing the high-

fire checkout and adjustment procedure, the low-fire setting may require adjusting.

Low-Fire Adjustment (500 MBH, 850 & 1,000 MBH only)

Use the TEST initiation procedures outlined in the previous section to operate the furnace in
the low-fire state (1st Stage).

2. Use a carbon dioxide analyzer and measure the percentage of carbon dioxide in the flue gas.

Refer to the illustration in

Figure 83, p. 158

. Take several samples to assure that an accurate

reading is obtained. Refer to

Figure 84, p. 159

for the proper carbon dioxide levels. If the

measured carbon dioxide level is within the listed values, no adjustment is necessary. A carbon
dioxide level exceeding the listed range indicates incomplete combustion due to inadequate air
or excessive gas.

3. Check the manifold gas pressure by using the manifold pressure port on the gas valve. Refer

Figure 84

for the required manifold pressure during low-fire operation. If it needs adjusting,

remove the cap covering the low-fire adjustment screw on the gas valve. Refer to

Figure 84

for

the adjustment screw location. Turn the screw clockwise to increase the gas pressure or
counterclockwise to decrease the gas pressure.

Note:

Do not adjust the combustion air damper while the furnace is operating at low-fire.