Pellerin Milnor Corporation
2.
In small increments
turn the screw clockwise until the control panel display shows a temper-
ature in the range specified in
. It is necessary to wait for the display to settle
after each adjustment. This task can take several minutes due to the lag time between when
you make the adjustment and when the change in temperature appears on the display.
5.8.
Step 7: High gas pressure
BNDGUM01.T07 0000338595 C.2 A.3 4/5/21, 4:26 PM Released
Fireye machines
Select SETUP MODE E (see
). This sets the modulating
gas valve to 000 and displays the inlet temperature.
Gyr machines
Set the modulating gas valve to position 000 (MVP=000). See
.
1. Look at
. Turn the dial on
SPGH
clockwise to the highest value.
2. Attach one side of the manometer to
GGH
(the higher pressure). Leave the other side open to
the atmosphere.
3. Start with
VGT
open. Slowly close
VGT
until the manometer displays the value specified in
4. Look at the gas pressure high light (
) on the status panel. Slowly turn the dial on
SPGH
counterclockwise (lower). Stop when the switch trips and the burner extinguishes.
Fireye machines
The status light illuminates briefly, then blinks. Open the manual test valve
again. The burner will ignite as soon as pressure is restored. Press
and
to extinguish
the status light.
Gyr machines
The status light should illuminate momentarily, but this may be too
quick to see. The flame control automatically resets and attempts to ignite the burner.
5. Verify the proper adjustment: Open
VGT
fully. Watch the manometer. Slowly close
VGT
.
SPGH
should trip when the set value is reached.
6. Open
VGT
fully.
5.9.
Step 8: Low gas pressure
BNDGUM01.T08 0000338608 C.2 A.4 4/5/21, 4:27 PM Released
Fireye machines
Select SETUP MODE E (see
). This sets the modulating
gas valve to 000 and displays the inlet temperature.
Gyr machines
Set the modulating gas valve to position 000 (MVP=000). see
.
1. Look at
. Turn the dial on
SPGL
counterclockwise to the lowest value.
2. Attach one side of the manometer to
GGL
(the higher pressure). Leave the other side open to
the atmosphere.
3. Start with the
external gas shut-off valve
open. Slowly close this valve until the manometer
displays the value specified in
.
4. Look at the gas pressure low light (
) on the status light panel. Slowly turn the dial on
SPGL
clockwise (higher). Stop when
SPGL
trips and the burner extinguishes.
5. Open
external gas shut-off valve
fully.
Set the Heating System—Air Heat Dryer
34
Содержание 5050
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Страница 125: ...Pneumatic Assemblies 10 121 ...