lp-666 Rev. 003 Rel. 001 Date 2.25.20
51
G. Cascade System Programming
1. If the boiler is used alone, skip this section.
2. Programming the Master Boiler:
a. Make sure there is no demand for heat being supplied to the
boiler.
b. Apply power to the boiler.
c. Tap Installer in the display Navigation Bar to enter the
Installer Menu.
d. Tap NEXT and navigate to Installer #15. Ensure the Cascade
Address is set to 0.
NOTE: The Master Boiler MUST be addressed as 0.
e. Ensure Installer #23, Cascade Mode, is set to ON.
f. Exit the Installer Menu.
3. Programming Follower Boilers:
NOTE: READ THE FOLLOWING BEFORE PROGRAMMING THE
FOLLOWER BOILERS
• The master boiler will share its alarm output with the
follower boiler addressed as 1.
• If one of the follower boilers has an indirect red water
heater connected to it, the address of this boiler must be 2
or greater.
• It is recommended but not necessary to address boilers in
the order that they are wired.
• No two boilers can have the same address.
• It is not required to use all consecutive address numbers.
Example: In a 2 boiler system with an indirect connected to
the follower, the follower address would be 2 (address 1 is
not used).
• Maximum amount of boilers in a cascaded system is eight
(8).
a. Make sure there is no demand for heat being supplied to the
master boiler.
b. Apply power to the follower boiler you are working on.
c. Tap Installer in the display Navigation Bar to enter the system
setting program.
d. Tap NEXT and navigate to Installer #15. Set the Cascade
Address to 1 for the rst follower, 2 for the second follower, etc.
depending on which boiler you are programming based on
the above notes. This establishes the boiler as a follower in a
cascaded system and enables data to be transferred as needed
for the system to function at full capability.
e. Ensure Installer #23, Cascade Mode, is set to ON.
f. Exit the Installer Menu.
H. Operating Instructions
Before operating the unit, it is important to verify that the gas line
and water lines are connected to the boiler and fully purged. If you
smell gas, STOP! Follow the safety instructions listed in the rst part
of this section. If you do not smell gas, follow the next steps.
1. Turn down the thermostats before applying power to the boiler.
If 0–10 volt or other inputs are used, make sure that they are set so
there is no call for heat while programming.
NOTE: An input of 1.5V is the minimum input to initiate a call for
heat on the boiler.
2. Power on the boiler or boilers if a cascade system is used.
3. Next, check the User settings. Adjustment and factory defaults
are outlined within this section. If a cascade system is used, it is
important that all the boilers have the same User settings.
4. Next, check the System settings. Adjustments and factory defaults
are outlined within this section. If a cascade system is used, it is
important that the master boiler is programmed with the correct
System settings.
5. Create a demand on the boiler or boilers if a cascade system is
used. The user can monitor system functions when the boilers are
operational.
6. If any boiler fails to start refer to the troubleshooting section in the
back of this manual.
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