059063–00 REV. C
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35
TARGET OFFSET
Adjustable from 40ºF/22ºC to (-40ºF/-22ºC)
Default:
0ºF/0ºC
Hold Button:
MENU/<Outdoor Reset>/Offset
in Outdoor Reset only
•
The Offset setting moves the Reset Ratio curve vertically. This means that, regardless of
the Outdoor temperature, or the Reset Ratio that has been selected, when the Offset
setting is changed, that change is directly added to or subtracted from the calculated
temperature. For example, if the Set Point temperature was 130°F and the Offset was
changed from 0° to 10° (an increase of 10°), the Set Point would increase to 140°F.
•
The Offset setting does not change the ratio selection. For instance, with 1.50 (OD):1.00
(SYS) Reset Ratio, the System water temperature will always increase one degree for every
1.5 degree change in the Outdoor temperature. What the Offset does is add or subtract a
constant temperature value. (See Understanding Operation Concept on page 6).
•
The Minimum and Maximum Target will take precedence over the Offset. That is, if the
Max Target was set to 170°F and the Offset was set to 10°F. If the set point was 165°F,
the new calculated set point based with the Offset should be 175°F. However, it will not
exceed 170°F due to the Maximum Target setting.
•
If required:
Adjust the Water Offset in mild weather
. If the ambient building
temperatures are too warm in the mild weather, decrease the Target Offset. If the
ambient building temperatures are too cold in the mild weather, increase the Target
Offset. The rule of thumb for baseboard radiation is to change the Offset 4°F for every
1°F you wish to change the building temperatures. In radiant heat applications, change
the Offset 1°F or 2°F for every 1°F you wish to change the building temperature.
MINIMUM TARGET
Adjustable from 70ºF/21ºC to 180ºF/82ºC
Default:
80ºF/27ºC
Hold Button:
MENU/<Outdoor Reset>/Min. Target
in Outdoor Reset only
•
The Minimum Target must be set to the boiler manufacturer’s specification. The SQ-Elite-8T
will calculate the Set Point based on the Outdoor temperature, the Reset Ratio, and
the Offset value. The SQ-Elite-8T will control all boilers to hold either the Set Point
temperature, or the Minimum Target, whichever is higher.
•
The Minimum Target must be at least 20°F lower than the Maximum Target (See next setting).
MAXIMUM TARGET
Adjustable from 90ºF/32ºC to 240ºF/116ºC
Default:
240ºF/116ºC
Hold Button:
MENU/<Outdoor Reset>/Max. Target
in Outdoor Reset only
•
This is the highest Target temperature the SQ-Elite-8T will calculate for the heating system.
•
When using in-floor radiant system, it should be set according to the tubing or floor
manufacture’s specification.
•
The Maximum Target must be at least 20°F higher than the Minimum Target
(See previous setting).
10
INSTALLER MENU SEQUENCE
-- SET SYS TEMP.1 -
120 F
[
]
BACK
SAVE
-- SET SYS TEMP.2 -
170 F
[
]
BACK
SAVE
-- AT OD TEMP.1 ---
60 F
[
]
BACK
SAVE
-- AT OD TEMP.2 ---
0 F
[
]
BACK
SAVE
Outdoor Temperature (in °F)
70
60
50
40
30
20
10
0
-10
-20
120
140
130
150
160
170
180
100
110
Water
Temperature (in °F)
Custom Reset Ratio
Point1: System=120°F
Oudoor=60°F
Point2: System=170°F
Oudoor=0°F
Point1
Point2
Customized Reset Ratio
M
Maaxx TTaarrg
geett
Min Target
Outdoor Temperature (in °F)
70 60 50 40
20
30
0
-10
10
-20
120
140
130
150
160
170
180
100
110
W
ater
Temperature (in °F)
Target Offset
Offset=10°F
Reset Ratio=1.5 : 1.0
Reset Ratio
Max Target
Min Target
Reset Ratio + 10F Offset
Min Target=120°F
Max Target=170°F
----- SET POINT -----
70 F
[
]
BACK
SAVE
-- OUTDOOR CUTOFF --
70 F
[
]
BACK
SAVE
-- TARGET OFFSET ---
+0 F
[
]
BACK
SAVE
Outdoor Temperature (in °F)
70 60 50 40
20
30
0
-10
10
-20
120
140
130
150
160
170
180
100
110
W
ater
Temperature (in °F)
Custom Reset Ratio
Point1: System=120°F
Oudoor=60°F
Point2: System=170°F
Oudoor=0°F
Point1
Point2
Customized Reset Ratio
Max Target
Min Target
70
60
50
40
30
20
10
0
-10
-20
120
140
130
150
160
170
180
100
110
Water
Temperature (in °F)
Outdoor Temperature (in °F)
Offset=10°F
Reset Ratio=1.5 : 1.0
Reset Ratio
Max Target
Min Target
Reset Ratio + 10F Offset
Min Target=120°F
Max Target=170°F
---- MIN TARGET ----
70 F
[
]
BACK
SAVE
---- MAX TARGET ----
240 F
[
]
BACK
SAVE
---- MIN RETURN ----
120 F
[
]
BACK
SAVE
Outdoor Temperature (in °F)
70 60 50 40
20
30
0
-10
10
-20
120
140
130
150
160
170
180
100
110
W
ater
Temperature (in °F)
Custom Reset Ratio
Point1: System=120°F
Oudoor=60°F
Point2: System=170°F
Oudoor=0°F
Point1
Point2
Customized Reset Ratio
Max Target
Min Target
70
60
50
40
30
20
10
0
-10
-20
120
140
130
150
160
170
180
100
110
Water
Temperature (in °F)
Outdoor Temperature (in °F)
Offset=10°F
Reset Ratio=1.5 : 1.0
Reset Ratio
Max Target
Min Target
Reset Ratio + 10F Offset
Min Target=120°F
Max Target=170°F
---- MIN TARGET ----
70 F
[
]
BACK
SAVE
---- MAX TARGET ----
240 F
[
]
BACK
SAVE
---- MIN RETURN ----
120 F
[
]
BACK
SAVE
Outdoor Temperature (in °F)
70 60 50 40
20
30
0
-10
10
-20
120
140
130
150
160
170
180
100
110
W
ater
Temperature (in °F)
Custom Reset Ratio
Point1: System=120°F
Oudoor=60°F
Point2: System=170°F
Oudoor=0°F
Point1
Point2
Customized Reset Ratio
Max Target
Min Target
70
60
50
40
30
20
10
0
-10
-20
120
140
130
150
160
170
180
100
110
Water
Temperature (in °F)
Outdoor Temperature (in °F)
Offset=10°F
Reset Ratio=1.5 : 1.0
Reset Ratio
Max Target
Min Target
Reset Ratio + 10F Offset
Min Target=120°F
Max Target=170°F
---- MIN TARGET ----
70 F
[
]
BACK
SAVE
---- MAX TARGET ----
240 F
[
]
BACK
SAVE
---- MIN RETURN ----
120 F
[
]
BACK
SAVE
TARGET OFFSET
