Lochinvar Power-Fin 502 Installation & Operation Manual page 62

8
Operating information
Operation of the cascade
The boiler designated as the Leader will have two additional display screens that can be viewed. These screens will provide
information regarding the operation of the Cascade. Each screen will contain two viewable items. The following is a description
of the individual items and what they can display:
Screen
#10
Press the Next  arrow key on the SMART SYSTEM display to access Screen #11.
#11
Press the Next  arrow key on the SMART SYSTEM display to roll back to Screen #1. At any point if you wish to access an earlier
screen, press the Previous  arrow key on the SMART SYSTEM display.
62
Status Display Screens
Display shows:
The Leader control has been turned off by the Enter/Reset button on
Cas: Off
the Smart System display.
The Leader boiler has not received a call for heat from a remote
Cas: Standby
thermostat.
The Cascade is now active. The system temperature will be displayed.
Cas: ***F(***)
The Cascade set point will be displayed in parenthesis.
The Cascade has met the water temperature set point, but is still
Cas: Setpoint Met
receiving a call for heat from a remote thermostat.
The Leader control could not detect any Member controls to participate
Cas: No Members
in the Cascade.
Cas: S6 Not Present The system sensor is not connected to the Leader boiler.
The Leader control has not received a call for heat from a remote
PMP: Off
thermostat and has not powered the system pump.
The Leader control has received a call for heat from a remote
PMP: On
thermostat and has powered the system pump.
The system call for heat has been satisfied and the system pump is
PMP: Delay
running for a fixed time to remove any residual heat.
The first percentage shows the firing rate that is being sent to the last
Cas PWR: ***% ***% boiler called on. The second percentage shows the total power available
to the Cascade.
Shows the number of boilers connected to the Cascade. The Leader is
designated as 0. Members will be designated 1 - 7. If a "-" is used in
place of a number, that boiler is either not connected, or in a lockout
Present: 01234567
mode and not available for the Cascade. If a "d" is used in place of a
number, that boiler is handling a DHW demand and is not available
Example:
for the Cascade. If the number is flashing, then that boiler is providing
Present: 23----d1
heat to the Cascade. As the lead boiler is changed from day to day, that
boiler's address will be shown first in the string of numbers. In the
example, boilers 0 - 3 are present, boiler 2 is the lead boiler, and boiler
0 is heating an indirect DHW tank.
Installation & Operation Manual
(cont'd)
Description