Adjustment, Start & Stop; Introduction; Adjustment Procedure - Eclipse ThermJet TJSR0020 Installation Manual

Adjustment, Start &
Stop

Introduction

In this chapter, you will find instructions on how to adjust,
start, and stop the burner system. Become familiar with
burner control methods before attempting to make
adjustments.
■ Do not bypass any safety feature; fire or explosion
could result.
■ Never try to light a burner if it shows signs of
damage or malfunction.

Adjustment Procedure

Step 1: Reset the System
1. Close the automatic gas valves and the gas cocks.
2. Fully open the manual air butterfly valve at each
burner and eductor. Drive the automatic zone air
control valve to high fire. Adjust the automatic zone air
control valve so that it is fully open.
3. Start the blower.
■ Make sure that the blower rotates in the correct
direction. If incorrect, have a qualified electrician
rewire the blower to reverse its rotation.
Step 2: Set Eductor
The eductor can be adjusted to pull all the exhaust gases
through the burner, at this setting it will provide
approximately neutral pressure in the furnace chamber.
Using this method it is not possible to use furnace
pressure control.
An alternative method, where more precise furnace
pressure control is required, is to pull only 90% of the
exhaust gases through the burner. The remaining 10% of
exhaust gas would exit through an auxiliary flue with
furnace pressure control. The datasheet provides the
Eductor butterfly valve settings to be used for both
methods and different chamber temperatures.
12
DANGER
CAUTION
Set the integral butterfly valve to the appropriate position
for the desired chamber temperature and exhaust
requirement. See the appropriate datasheet in series 208.
To adjust the integral butterfly valve it will be necessary to
loosen the two locking screws, retighten after adjustment.
There are two scales on the eductor, numbering 0 to 6.
The pointer must be on the opposite side of the burner as
the air inlet. Example, if the air comes in on the right side
of the burner, the indicator pin must point to the number
on the left side of the label. See Figure 4.1.
Set Eductor
Indicator
Using this Side
of the Scale
for RH Air Inlet
Figure 4.1. Right Side Air Inlet Shown
NOTE: These settings are for a neutral chamber
pressure. For settings for a positive or negative chamber
pressure please contact Eclipse.
Step 3: Set High Fire Air
1. Set the system to high fire, but DO NOT ignite the
burner (s).
2. The initial settings for the air should match the static
pressure listed in the datasheet for the temperature of
your furnace. This is only the initial setting, as the
furnace temperature increases the pressure will
change and further adjustment will be required.
3. Set high fire air.
NOTE: A pressure tap is open when the screw inside the
tap is unscrewed approximately half a turn.
Eclipse ThermJet Self-Recuperative, V5, Installation Guide 208, 2/4/2013
4
Air
Inlet