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BOOST
Adjustable from 0°F/0°C to 80°F/44°C
Hold Button: MENU/<System Settings>/Setback/Boost
•
This features allows a building to either warm up or cool down quickly after a Setback
period to bring the building to the desired temperature faster.
•
The Boost temperature will be the number of degrees to be added in Heating or subtracted in Cooling from the Target.
•
The new Set Point will appear on the main display indicating this condition "Boost to 190 F".
•
Using the previous example, if the Target was 180°F and the Setback was 20°F and the Boost was 10°F for 30 minutes, after the
setback period, the Boost will change the target to 190°F for a period of 30 minutes.
Boost perIod
Adjustable from 0 to 120 minutes
Hold Button: MENU/<System Settings>/Setback/Boost/Boost Period
•
This will determine the length of time the system will receive Boost.
•
If External Signal was selected as the Setback Mode, the Boost will start when the
switch from Setback to normal operation takes place and will continue for the full Boost Period. An example would be if
the Boost Period was set to 30 minutes and the shorting of the Setback terminals has ended at 7:00Am, the Boost will start at
7:00Am and will terminate at 7:30Am where the control will resume normal operation.
•
If Day/Night Schedules were available, the Boost will start a full Boost Period prior to the switch from Night setback to Day
normal operation. If the Day was set to start at 7:00Am, the Boost Period was set to 30 minutes, the Boost will start at 6:30Am
and terminate at 7:00Am.
avoiding conflicting Boiler limits
•
The temperature limits set on the boilers MUST be set considerably higher than the SQ-
Elite-8T's Set Point for the reasons detailed below.
•
The SQ-Elite-8T sensor is located in a common header some distance from the boilers.
As the temperature rises in the header and before reaching the sensor location, energy is
dissipated. Therefore, the temperature in the header could be lower than that registered
by boiler sensors.
•
In addition to the normal drop experienced between the boiler's temperature and that
read by the SQ-Elite-8T sensor, the Last Stage Hold setting must be accounted for. The boiler limit must be set above the Set
Point PLUS the Last Stage Hold PLUS the normal drop experienced in the piping.
•
Using the previous example of a 10°F Last Stage Hold with a 160°F Set Point, the boilers' limits must be set enough over 170°F
to prevent the boilers' internal limits being reached. In this situation, the boiler high limit should be set at approximately 180°F
to prevent the difference in boiler temperature vs. header temperature from causing erratic operation.
DAY/NIGHT SCHEDULES
Hold Button: MENU/<System Settings>/<Setback Schedule>/Day Schedules
•
The SQ-Elite has two levels of heat or cool. The Day level is used when a building is
occupied and people are active.
•
The Night (Setback) level is used when a building is not occupied, or when people are
sleeping. This setting reduces the calculated temperature in Heating and increase it in
Cooling by the Setback setting based on the provided schedule. In Heating, if the Day
calculated water temperature was 150˚F and the Setback was 20˚F, the Night Schedule
will run at (150˚F - 20˚F) = 130˚F.
•
If the Boost feature is being used, it uses the Day Schedule as a Boost ending point. That is, if the Day Schedule is set to start
at 6:00AM, the Boost was set to 10ºF, and the Boost Period was 30 minutes, the Boost will start at 5:30AM. Then, when in
Boost, SQ-Elite-8T will raise the calculated water temperature by the Boost amount. Using the previous example, at 5:30AM
the SQ-Elite-8T will raise the calculated water to 170˚F (150˚F + 20˚F) until 6:00AM where it will drop back to the normal
calculated temperature of 150˚F.
SQ-Elite-8T & SQ-Elite-EXT Installation Manual
Default: 0°F/0°C
Default: 30 minutes
-------- BOOST ---------
0 F
[
BACK
------ BOOST PERIOD---
30min
[
BACK
WARNING
The temperature limits set on
the boilers must be higher than
the SQ-Elite Set Point. Read
the section at left for details
that will prevent erratic system
operation.
-- DAY SCHEDULE ----
07:**Am
BACK
-- NIGHT SCHEDULE --
10:**Pm
BACK
27
]
SAVE
]
SAVE
SAVE
SAVE
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