Adjustment, Start & Stop; Introduction; Modulating Gas And Air Ratio System; Step 1: Reset The System - Eclipse ExtensoJet EJ025 Installation Manual

Adjustment, Start &
Stop
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Step 1: Reset the System
Eclipse ExtensoJet v2 Installation Guide No. 230, 9/17/2008
In this chapter you will find instructions on how to adjust a system,
and how to start and stop a system. The chapter starts with
general instructions that are useful for adjustment.
Danger:
Do not bypass any safety feature. You can cause fires
and explosions.
Obey the safety precautions in Chapter 2.
Adjustment
There are two adjustment procedures. To adjust a modulating
gas and air ratio system, refer to "Modulating Gas and Air Ratio
System" on page 15. For a fixed-air system, refer to "Fixed-air
System" on page 18.
If you adjust an on-ratio system for the first time, you must follow
these steps (Refer to Figure 3.1 and Figure 3.3 in the ExtensoJet
Design Guide No. 230):
1. Reset the system
2. Set high fire air
3. Set low fire air
4. Verify the air settings
5. Ignite the burners
6. Set high fire gas
7. Set low fire gas
8. Verify the gas settings
1. Close these valves: the automatic gas valves and the gas
cocks.
2. Fully open the manual air butterfly valve at each burner.
a. Drive the automatic zone air control valve to high fire.
b. Adjust the automatic zone air control valve so that it is fully
open. The automatic zone air control valve can be either a
butterfly valve or a CRS valve.
3. Start the blower.
Caution:
Make sure that the blower rotates in the correct direction.
If incorrect, have a qualified electrician rewire the blower
to reverse its rotation.
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