53
LP-294 REV. 9.2.14
H. CASCADE SYSTEM
1. If a single boiler is installed, skip this section.
2. Programming the Master Boiler:
a. Make sure there is no demand for heat being supplied to the boiler (e.g. open thermostat).
b. Set the bus master switch to the ON (left) position (factory default) on the master boiler and be sure the
switch is set to OFF (right) on all followers (and the Interface Module, if used). This will ensure correct operation of the
cascade bus.
c. Apply power to the boiler.
d. Enter the Installer Menu, Boiler Config, to set the address (Part 12, Section B of this manual).
e. Set the cascade address function to 1.
NOTE:
The Master Boiler MUST be addressed as 1.
f. Exit the Installer Menu.
3. Programming Follower Boilers:
NOTE: READ THE NOTES BELOW BEFORE PROGRAMMING FOLLOWER BOILERS
•
It is recommended but not necessary to address boilers in the order that they are wired.
•
No two boilers can have the same address.
a. Make sure there is no demand for heat being supplied to the master boiler (e.g. open thermostat).
b. Ensure the bus master switch is set to OFF (right).
c. Apply power to the follower boiler you are working on.
d. Enter the Installer Menu, Boiler Config, to set the address (Part 12, Section B of this manual).
e. Set cascade address to 2 for the second boiler, 3 for the third boiler, etc.
e. Exit the Installer Menu.
PART 9 – CONTROL AND DISPLAY OVERVIEW
FOR YOUR OWN SAFETY READ BEFORE OPERATING
1. This boiler does not have pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the
burner by hand.
2. BEFORE OPERATING: smell all around the boiler area for gas. Be sure to smell next to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any boiler.
•
Do not touch any electric switch; do not use any phone in your building.
•
Immediately call your gas supplier from a neighbor's phone. Follow the gas suppliers' instructions.
•
If you cannot reach your gas supplier, call the fire department.
•
Turn off gas shutoff valve (located outside of the boiler) so that the handle is crosswise to the gas pipe. If the handle will not
turn by hand, don't try to force or repair it, call a qualified service technician. Force or attempted repair may result in a fire or
explosion.
4. Do not use this boiler if any part has been under water. Immediately call a qualified service technician to inspect the boiler and to
replace any part of the control system and any gas control that has been damaged.
5. The boiler shall be installed so the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during
boiler operation and service (circulator replacement, condensate trap, control replacement, etc.)
Failure to follow these instructions could result in property damage, serious personal injury, or death.
If you discover any evidence of a gas leak, shut down the boiler at once. Find the leak source with a bubble test and repair immediately.
Do not start the boiler again until the leak is repaired. Failure to comply could result in substantial property damage, severe personal
injury, or death.
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