tekmar 274 Boiler Control - Manual (Page 34)

© 2012 274_D - 11/12 34 of 44
Item Field Range Access Description Actual Setting
ADJUST OFF, On
Default = On
ADV
ZONE LOAD SHEDDING SECTION M
Selects whether Zone Load Shedding is active
or not.
Note: This item is only available when a tN4 device
is present and Boil Min is set between 80 to 180°F
(26.5 to 82.0°C).
ADJUST
OFF, AUTO,
0:20 to 4:00
hours
Default = OFF
ADV
PRIORITY OVERRIDE SECTION E & F
The amount of time priority is given for DHW or
Setpoint operation before space heating resumes.
Note: This item is only available when DHW
Mode is set to either 2,4,or 5, OR Setpoint mode
is set to either 2,or 4.
ADJUST
Occ
35 to 100°F,
OFF
(2.0 to 38.0°C,
OFF)
Default = 70°F
(21.0°C)
INST
ADV
WWSD OCCUPIED SECTION B
The system’s warm weather shut down temperature
during the Wake and Occupied periods. The
WWSD applies to the space heating loads only.
It does not affect DHW or Setpoint heating loads.
Note: This item is only available when the DIP
is set to Demands.
ADJUST
UnOcc
35 to 100°F,
OFF
(2.0 to 38.0°C,
OFF)
Default = 60°F
(15.5°C)
ADV
WWSD UNOCCUPIED SECTION B
The system’s warm weather shut down temperature
during the Sleep and Unoccupied period.
Note: This item is only available when the
DIP is set Demands and the DIP is set to
Setback.
ADJUST
Primary 12
hr
12 to 180 hours,
OFF
Default = 96
hours
ADV
ROTATE PRIMARY PUMPS SECTION H
Sets the frequency of rotation of the primary pumps.
Note: This item is only available when the DIP
is set to Pump Sequencer.
ADJUST
Primary
min
OFF, 0:10 to
19:55 minutes
Default = 0:20
min
ADV
PURGE PRIMARY PUMP SECTION H
Time the primary pump remains on once the
demand is removed to purge heat from the
boiler.
ADJUST
min
OFF, 3 to 40
minutes
Default = 20
minutes
ADV
BOILER ALERT SECTION D
Alert signal if boiler supply does not increase
in temperature within the selected time.
Note: This item is only available when RELAY
is set to ALRT.
Adjust Menu (6 of 6)
ADJUS
T MENU
After the last item, the control returns to the first item in the menu.