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operatIng settIngs
prograM change settIngs
To be able to change the SQ-Elite settings the Program/Run Switch must be set to Program.
The switch is located under the Enclosure Wiring Cover for security. The Enclosure Wiring
Cover can be securely closed using a padlock.
SEASON
Winter, Summer
Button: MENU/Season
•
In Heating Mode, the SQ-Elite-8T will turn all boiler relays off when it is in Summer
setting. The Message Display Line will read Summer to show status. However, a
DHW call will bring the boilers back on if needed. When in Winter, the SQ-Elite-8T
will activate the System relay whenever the Outdoor temperature falls to or below
the Outdoor Cutoff setting. In addition, it will begin heating whenever the System
temperature falls below the Set Point Temperature. The Message Display Line will not
display any season information.
•
In Cooling Mode, the SQ-Elite-8T will turn all stage relays off when it is in Winter
setting and the Message Display Line will read Winter to show that status.. However,
in Summer , all stages will be off.
•
When the season is over, it is a good practice to switch the SQ-Elite-8T Season setting.
This will allow DHW calls in heating to operate the boilers when needed.
RESET RATIO
Custom, 1(8.00ºOD : 1.00ºSys) to 12 (4.00ºOD : 1.00ºSys) D efault: 1(1.00ºOD : 1.00ºSys)
Hold Button: MENU/<Outdoor Reset>/Reset Ratio
•
The Reset Ratio applies only to Heating applications.
•
The Reset Ratio determines how the system Target temperature will vary based on the
outdoor temperature. With any of the ratios, the colder it becomes outside, the hotter the
temperature of the system water. (See Understanding Operation Concept on page 5)
•
With a 1.00 (OD):4.00 (SYS) ratio, the System water temperature (SYS) will increase
rapidly as the outside temperature falls, hitting the Maximum of 240°F at 35°F outside
temperature. With a 4.00 (OD):1.00 (SYS) ratio, the System temperature (SYS) will
increase slowly as the outside temperature falls. Even at -30°F, the system water will
only be 125°F, and at 22°F outside, the system water will be 112°F. Such a low Reset
Ratio might be used with radiant floor heating applications.
•
With most baseboard heating applications, a 1.00 (OD):1.00 (SYS) setting is a good
place to start. With a 1.00 (OD):1.00 (SYS) ratio, for every degree the outside
temperature falls, the system water temperature is increased one degree.
•
If required: Adjust the RESET RATIO in cold weather. If the ambient building
temperature are cold in cold weather, move the ratio to a higher selection. That is, if
1.00 (OD):1.00 (SYS) was initially selected, change the selection to 1.00 (OD):1.25
(SYS). If the building temperature are too warm in cold weather, move the ratio to a
lower selection. That is, if 1.00 (OD):1.00 (SYS) was initially selected, change it to 1.25
(OD):1.00 (SYS).
•
After selecting the Reset Ratio, pressing the SAVE button will switch to the Outdoor
Cutoff setting option.
custoMIzed reset ratIo
Hold Button: MENU/<Outdoor Reset>/Reset Ratio/Custom
•
For situations where the available reset ratios do not provide the perfect building heat-loss equilibrium, the customized option
can be used by selecting Custom from the Reset Ratio menu option.
•
It provides the user with the capability of assigning two points on the reset ratio diagram and use the line that connects those
two points as the customized reset ratio curve. Each of the two points will need a specific System and Outdoor Temperature to
identify it on the diagram.
SQ-Elite-8T & SQ-Elite-EXT Installation Manual
Default: Winter
In Outdoor Reset Only
PROGRAM
ALERT
DO NOT turn power off to
the SQ-Elite-8T when in
off-season. If you do so, the
battery will run down and
have to be replaced. Instead,
switch to Summer or Winter.
---- SEASON ---
Winter
Summer
BACK
---- RESET RATIO ---
Custom
1(8.00 OD:1.00 SYS)
2(4.00 OD:1.00 SYS)
3(3.00 OD:1.00 SYS)
4(2.00 OD:1.00 SYS)
5(1.50 OD:1.00 SYS)
6(1.25 OD:1.00 SYS)
7(1.00 OD:1.00 SYS)
8(1.00 OD:1.25 SYS)
9(1.00 OD:1.50 SYS)
10(1.00 OD:2.00 SYS)
11(1.00 OD:3.00 SYS)
12(1.00 OD:4.00 SYS)
BACK
1:4
130
Warmer
120
110
100
70
60
50
Outdoor Temperature
21
RUN
SAVE
SAVE
1:1
Colder
4:1
40
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