POWER GAS BURNER
20.Direct Spark Ignition – (DSI) Burners – No pilot:
1.Connect a manometer to the manifold test port. Set the air shutter as shown on the tag attached to the gas train. This may not be the exact setting you end up with, but it is a good starting point. Turn the unit on using the rocker switch on the side of the control enclosure assembly. The burner should come on and ignition occur. If the burner fails to ignite, there may have been air in the line. To reset the control, turn the switch off for 60 seconds (S89 controls only) and it should automatically reset or push the reset button on the control. Once the burner fires, set the manifold pressure at the valve shown on the tag attached to the gas train. There will a tap on the downstream side of the valve to measure pressure. The manifold pressure must be taken downstream of the gas valve. Check the incoming pressure with the burner running. This is recorded as flow pressure and must be a minimum of 8” W.C.
21.Make final settings of the air shutter by checking the flue gas analyzer.
A.The readings need to be taken from a hole in the vent several inches above the heater vent connection, but before draft regulator.
B.Insert draft gauge into the 1/4” test opening in the stack. Draft in stack should read
C.When water in the tank is above 120°F°, insert CO2 tester in 1/4” test opening and take CO2 reading in percentage. CO2 reading at this time will probably be below optimum.
D.Gradually close the air shutter, taking CO2 reading at each adjustment of air shutter until optimum CO2 percentage
E.Insert CO tester in 1/4” test opening and take CO reading. CO should not exceed .03%. A reading greater then .03% indicates lack of air. Open air shutter slightly and take readings until CO is within proper range. Optimum reading is no CO.
F.If air shutter has been changed during CO test, take a final CO2 reading.
G.Insert stack temperature gauge in 1/4” test opening and read gross stack temperature. Temperature should be as shown in Table
flue tubes for baffles. All tubes should have at least one baffle for TURBOPOWER® modules. Record the length of the baffles on TURBOPOWER® models for future use.
H.Make sure the air shutter is locked securely in place.
STACK TEMPERATURES
SERIES | MAX. GROSS | *MIN. NET | |
STACK | STACK | ||
| |||
PG | 550°F | 300°F | |
(Vertical Tube) | |||
|
| ||
TP |
|
| |
TPO | 375°F | 300°F | |
TPGO |
|
| |
| TABLE |
|
*Net temperature is the total stack temperature, less room temperature.
22.On burners with pilots, recheck pilot to make sure its operation has not deteriorated if adjustments are made to the air shutter. To do this, shut off the main valve, check the flame response signal by cycling the burner through several lightoffs.
23.Check each operating and limit control to be sure they function properly by lowering and raising the temperature setting on each control, causing the burner to cycle on and off.
NOTE: During the initial firing of the burner, smoke that is not related to the burner will be emitted from the heater. This is normal during “burn in” and could possibly continue for several days.
24. Record the following information for future use:
A.Air shutter position__________________________
B.Manifold gas pressure____________________"W.C.
C.Stack draft_____________________________"W.C.
D.CO2 reading______________________%
E.CO reading__________________% (less than .03%)
F.Stack temperature:
Gross_____________________________°F Less ambient_______________________°F Net_______________________________°F
G.Thermal efficiency_________________________%
(4) | Section 9 |