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059063–00 REV. C
AVOID 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.
SET PRESENT TIME
Hold Button:
MENU/<System Settings>/<Setback Schedule>/Present Time
Hold Button:
MENU/<Maintenance>/Present Time
•
The Time is used for Day/Night Schedule and History graph.
•
Adjust the time by selecting Time from the menu and then scrolling through the hours
followed by the minutes. If hours are to be set to PM, scroll through the AM hours to
reach the PM hours.
10
INSTALLER MENU SEQUENCE
ALERT
Remember that the battery is used as a time backup. If no power is supplied to the
SQ-Elite, the battery will die in three months and time clock values will be lost. Thus,
DO NOT power down the control during off-season.
-------- BOOST ---------
0 F
[
]
BACK
SAVE
------ BOOST PERIOD---
30min
[
]
BACK
SAVE
-- DAY SCHEDULE ----
07:**Am
BACK
SAVE
-- NIGHT SCHEDULE --
10:**Pm
BACK
SAVE
-------- BOOST ---------
0 F
[
]
BACK
SAVE
------ BOOST PERIOD---
30min
[
]
BACK
SAVE
-- DAY SCHEDULE ----
07:**Am
BACK
SAVE
-- NIGHT SCHEDULE --
10:**Pm
BACK
SAVE
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.
- SET PRESENT TIME
**:**
BACK
SAVE
-- DHW SETTINGS ---
DHW Temp.
120 F
DHW
Prior
Tmr
60min
DHW Set Point
120 F
DHW Diff.
5 F
BACK
SELECT
DHW PRIORITY TIMER
30min
[
]
BACK
SAVE
-- DHW SET POINT --
120 F
[
]
BACK
SAVE
