5
£
Select the appropriate programmer and amplifier modules for your application. Remove the dust
cover from the chassis. Insert the amplifier module into the slot in the center of the chassis and gen-
tly push the module into position. Insert the programmer module into the slot at the right side of the
chassis and gently push the module into position.
WARNING: Turn off the power when installing or removing the control.
INSTALLATION - UV SCANNERS
Where possible, obtain the burner manufacturer’s instructions for mounting the scanner. This infor-
mation is available for most standard burners. The scanner mounting should comply with the follow-
ing general instructions:
1.
Locate the scanner within 30 inches (76cm) of the flame to be monitored, closer if possible.
2.
Select a scanner location that will remain within the ambient temperature limits of the UV-eye
scanner (200
q
F/93
q
C). If cooling is required, use (a) an insulating coupling (Fireye part #35-69)
to reduce conducted heat; (b) a window coupling (Fireye part #60-1257) to seal off furnace or
burner pressure; (c) cooling air to reduce the scanner sight pipe temperature.
3.
Mount rigidly a short length (10-20cm) of
1
/
2
s
or
3
/
4
s
black iron pipe in a position that permits
an unobstructed view of the pilot and/or main flame.
CAUTION: The scanner must not sight the ignition spark directly, or any part of the burner
that can reflect the spark back to the scanner.
4.
The maximum UV signal from a flame is found in the first one-third of the visible flame taken
from the point where the flame begins. The scanner sight pipe should be aimed at this area.
5.
A correct scanner application will not see a pilot flame that is too small to ignite the main flame
reliably. Note particularly the test for minimum pilot that is described on Page 12.
6.
On installations having negative pressure combustion chambers, a small hole (
1
/
8
s
or
3
/
16
s
)
(3 or
5mm)drilled in the sight pipe will assist in keeping the pipe clean and free from smoke.
7.
Two scanners may be installed on one burner if it is necessary to view two areas to obtain reli-
able detection of the flame. They should be wired in parallel.
AMPLIFIER
PROGRAMMER
