IBC Technologies SL 30-175, Инструкция по установке и эксплуатации, Страница: 59 / 78

5-5
TROUBLESHOOTING
SL 30-175, SL 45-260 MODULATING GAS BOILERS
5.2.8 Optional Low Water Cut Off Kit
A UL 353 certified probe-type low water cut off device can be ordered Factory
installed, or a LWCO retrofit kit (IBC Part #P-156A) can be ordered for a retrofit.
the lWCo has test and reset buttons, located inside the case near the base of
the rating Plate. the lWCo will reset upon power up of the boiler and return the
device to its state at the time of any power cut.
if the lWCo has been tripped, either from a low water incident or by pushing the
test button, the boiler will go into a “hard” lockout for one hour. if immediate reset
is required:
1.
Push the reset button.
2.
Check that the red lamp inside the lWCo Module is illuminated.
3.
Cycle the power to the boiler off and back on.
A red lamp will be illuminated when the LWCO confirms presence of water. If the
red light does not come on:
1.
Confirm that the system is fully charged and that all air has been released
(see Figure 24 for best placement of the air bleed device).
2.
Check for power at lWCo control module (24 Vac between terminals 1
(yellow) and 3 (blue)).
Low Water Cut-Off Probe tapping -
on Supply Riser (plugged)
Low Water Cut-Off Module installs in
chamber behind Control Panel
Optional Low Water Cut-Off Probe
can be installed
Low Water Cut-Off Test and Reset button
assembly installs from under the top of the
module cabinet
Circuit board must be removed in order to
install the Low Water Cut-Off Module as a
retrofit.
LWCO Module cabinet is accessed
by opening the access door behind
the control cabinet.