9
no or YES
- Pump Activation every 24 hours
• If the display shows
YES
then the VSP will activate both the Secondary Loop pump and the Injection pump for 5
minutes every 24 hours. Certain local codes (generally only in Canada) require this.
• If the display shows
no
then the VSP will only run the pumps when the system requires it. This setting will prevent
hot water from being pumped into the Secondary loop when there is no call for heat.
• To change the mode, hold down the center button while pushing either the
UP
or
DOWN
button to toggle between the
displays of
YES
and
no.
• When the correct mode is selected, release the buttons and wait approximately 5 seconds.
• If any changes were made to the operating modes, the display will flash. Then the VSP will display the temperature of
the sensor in the Secondary loop.
INITIAL SETTINGS FOR A RESET CONTROL (see
rSt
previous page)
• After setting the operating mode, the VSP will display the temperature of the Secondary loop. This is the default
display.
• To see and/or adjust the other parameters, press then release the center button marked
PRESS TO READ
. The VSP will
display a code to indicate which parameter will be displayed next. After two seconds, the value of the parameter will
be shown.
• For those parameters where the values can be set (shown on chart pg. 10), press the
UP
or
DOWN
button to change
the value while it is being displayed. Holding down the
UP
or
DOWN
button will cause the value to change more
quickly.
• The
S
ys
t
em
S
tart
(
StS
) temperature setting is the outdoor temperature above which the VSP will not give heat. Start
with the factory default setting of 60°F.
• The
r
e
S
e
t Ratio
(
rSt
) determines how quickly the water temperature in the Secondary loop will increase as the outdoor
temperature decreases (see pg. 12). Lower numbered curves result in lower water temperatures. The factory default
curve is 7 or (1:1). This means for every degree the outdoor temperature falls (below the
System Start
temperature) the
Secondary loop temperature will be increased one degree. For baseboard heat, start with 7. For most radiant tubing
applications, start with 3.
• The
Off
set
(
OFF
) value is added or subtracted to the calculated water temperature for the Secondary loop. It effec-
tively moves the starting point of the reset curves up and down by the number of degrees selected (see pg. 12). Start
with the factory default setting of 0.
• The
LO
w
r
eturn
(
LOr
) comes factory set to
OFF
. This is the correct setting if you are not using the Boiler return water
sensor. If you do use the Boiler return sensor, then the setting must be set to the boiler manufacturer's specification.
• The
Hi
gh Supply
(
Hi
) value must be adjusted to the maximum temperature value specified for the Secondary loop
components.
• The
S
et
b
ack (Sb) value
determines how many degrees the Secondary loop temperature will be decreased when the
EXT Input in the Setback mode (see pg. 13) is shorted. Start with the factory default setting of 20°F.
INITIAL SETTINGS FOR A SET POINT CONTROL (see
SP
previous page)
• After setting the operating mode, the VSP will display the temperature of the Secondary loop. This is the default value
for the VSP display.
• To see and/or adjust the other parameters, press then release the center button marked
PRESS TO READ
. The VSP will
display a code to indicate which parameter will be displayed next. After two seconds, the value of the parameter will
be shown.
• For those parameters where the values can be set (shown on chart pg. 10), press the
UP
or
DOWN
button to change
the value while it is being displayed. Holding down the
UP
or
DOWN
button will cause the value to change more
quickly.
• The
S
ys
t
em
S
tart
(
StS
) temperature setting is the outdoor temperature above which the VSP will not give heat. Set to
ON
if the system set point should be held regardless of outside temperature.
• The
r
e
S
e
t Ratio
(
rSt
) and
Off
set
(
OFF
) values have no effect and do not need to be adjusted.
• The
LO
w
r
eturn
(
LOr
)comes factory set to
OFF
. This is the correct setting if you are not using the Boiler return water
sensor. If you do use the Boiler return sensor, then the setting must be set to the boiler manufacturer's specification.
• The
S
et
P
oint
(
SP
) should be set to the desired temperature for the Secondary loop.
• The
S
et
b
ack (Sb)
value determines how many degrees the Secondary loop temperature will be decreased when the
EXT Input in the Setback mode (see pg. 13) is shorted. Start with the factory default setting of 20°F.
