Install Instructions

STEP 6 - Testing and Diagnostic Procedures
7
Series 750 LWCO with Green Power On LED and Red Low Water LED
Start-Up
a . B e f ore filling the system, t u r n on the electric power to the boiler.
1 . Upon initial power up, the Green and Red lights will flash
s i m ultaneously 4 times.
2 . The Green and Red lights will turn “ O N ” .
3 . The bu r ner will never turn “ O N ” d u ring power up, If water is off
the probe.
b . N o w fill the boiler with water.
(auto reset units only )
1 . When water touches the probe, the Green light will remain “ O N ” .
2 . The Red light will turn “ O F F ” and the bu rner will turn “ O N ” as long
as there is water on the probe.
( m a n ual reset units only )
(When water returns to the probe, nothing will happen until the manual reset button is depressed.)
1 . After depressing manual reset button, the Green and Red lights will flash simultaneously 4 times.
2 . Then the Green light will turn “ O N ” and the Red light will turn “ O F F ” .
3 . The bu r ner will turn “ O N ” as long as there is water in the probe.
Manually Testing Control
c . S l o w l y drain the boiler of water.
(both auto and manual reset units)
1 . When the water drops off the probe, the Green light will remain “ O N ” .
2 . The Red light will turn “ O N ” and the bu r ner will turn “OFF”, if water is off the probe.
Testing Control Using “Test Button”
d . Depressing the test button with “water on pro b e ” (auto reset units only ) :
(Must depress and hold test button to activate test cycle. )
1 . When test cycle is activated the Red and Green lights will flash simultaneously 3 times.
2 . The Red light will turn “ O N ”
3 . The bu r ner will turn “ O F F ” .
4 . The Green light will continue flashing as long as the test button is depressed.
(Release test button, if water is still on probe. )
5 . The Green lights will stop flashing and turn “ O N ” .
6 . Then Red light will turn “ O F F ” .
7 . The bu r ner will turn “ O N ” as long as there is water in the probe.
e. Depressing the test button with “water on pro b e ” ( m a n ual resets units only ) :
(Must depress and hold test button to activate test cycle. )
1 . When test cycle is activated the Red and Green lights will flash simultaneously 3 times.
2 . The Red light will turn “ O N ”
3 . The bu r ner will turn “ O F F ” .
4 . The Green light will continue flashing as long as the test button is depressed.
(Release test bu t t o n . You must depress the manual reset button to unlock the low water cut-off. )
5 . After depressing manual reset button, the Green and Red lights will flash simultaneously 4 times.
6 . Then the Green light will turn “ O N ” and the Red light will turn “ O F F ” .
7 . The bu r ner will turn “ O N ” as long as there is water in the probe.
f. Depressing the test button with “water off pro b e ” (both auto and manual reset units):
(Since control is in “ l ow wa t e r ” the Green light will flash and the Red light will remain “ O N ” . The bu r n e r
will remain “ O F F ” .
CSD-1 Compliance
On manual Reset units, if the control is in a low water condition (water off probe) when there is an inter-
ruption of powe r, the control will remain in a low water condition when power is restored. The reset bu t t o n
will need to be pressed when the water level is restored to a level above the probe.