059063–00 REV. C
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45
PUMP, VALVE, AND COMBUSTION AIR
DAMPER OPERATION
The SQ-Elite-8T controls multiple relays each controlling different types of equipment. In
addition to the control of the boilers or cooling units, it can control, the primary system
pump, unit pumps or valves, a DHW pump, and a combustion air damper. The operation of
those relays depends on the Startup and System Settings.
RUN-ON
Adjustable 0 to 60 minutes
Default:
2 minutes
Hold Button:
MENU/<System Settings>/Run-On
•
The Run-On applies to all pumps, valves and dampers. It is the additional time a
pump, valve, or a combustion air damper relay will run after the output unit relays
has de-energized. For pumps and valves, it is used to dissipate the excess energy
from the heating or cooling system into the building. For a combustion air damper, it
brings in enough fresh air for the next boiler fire up.
•
The Run-On time should be set based on the size and type of the equipment. A boiler
with low water content will need a longer Run-On than a boiler with more water content.
PUMP EXERCISE
Adjustable Off, On
Default:
Off
Hold Button:
MENU/<System Settings>/Pump Exercise
•
The SQ-Elite-8T provides an option to exercise pumps for 10 seconds when not used for
seven days. This option reduces pumps’ impellers locking after a long off-season period.
10
INSTALLER MENU SEQUENCE
DHW DIFFERENTIAL
10 F
[
]
BACK
SAVE
------- RUN-ON -------
2min
[
]
BACK
SAVE
--- PUMP EXERCISE --
Off
On
BACK
SAVE
DHW DIFFERENTIAL
10 F
[
]
BACK
SAVE
------- RUN-ON -------
2min
[
]
BACK
SAVE
--- PUMP EXERCISE --
Off
On
BACK
SAVE
