60
|
059705–00 REV. B
The Advance HEAT Setting Menu is accessed by pressing the right button under Menu and
holding for 5 seconds
.
ADVANCED HEAT SETTINGS—
HOT WATER
SLEEP SETBACK
Selections:
(–)80°F–0°F
Default:
0°F
Description:
The Sleep Setback can be used to provide the Genesis Heat-Timer
®
with a
lower calculated system temperature during the Night heating mode when less load is
required. The lower System Temperature will appear on the main display indicating
this condition.
A typical use for Setback is to provide less system temperature to a building during the
night or on the weekends when building is not occupied, but heat is still required.
The amount of Setback selected is subtracted from the calculated System Temperature
when the Night heating mode begins. This is during scheduled periods of AWAY
and SLEEP.
SYSTEM OFFSET
Selections:
(–)40°F–40°F
Default:
+0°F
Description:
The System Offset setting allows you to adjust the starting points of the
Reset Ratio curves. This means that, regardless of the Outdoor Temperature (OD) 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
calculated system temperature was 130°F and the Offset was changed from 0° to 10°
(an increase of 10°), then the revised/offsetted system temperature would increase
to 140°F
The Offset setting does not change the ratio selection. For instance, with 1.00
(OD):1.00 (SYS) Reset Ratio, the System water temperature (SYS) will always increase
one degree for each degree change in the Outdoor temperature (OD). What the
Offset does is add or subtract a constant temperature value to the calculated
system temperature.
If required:
Adjust the Water Offset in mild weather
. If the ambient building
temperatures are too warm in mild weather, decrease the Water Offset. If the ambient
building temperatures are too cold in mild weather, increase the Water 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.
70 60 50 40 30 20 10
0
-10 -20
120
140
130
150
160
170
180
100
110
W
ater
Temperature (in °F)
Outdoor 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
SYSTEM TEMP OFFSET
BACK SAVE
F
SLEEP SETBACK
BACK SAVE
F
19
SETTINGS—ADVANCED HEAT MENU