tekmar 264 Boiler Control - Manual (Page 28)

© 2008 D 264 - 12/08 28 of 32
Adjust Menu (3 of 4)
Display Description Range
Section Installer Ad
vanced
Actual
Setting
B1
Staging - Selects the firing sequence of the stages
when using multi-stage boilers.
This item is only available in Mode 3.
lohi, lolo
Default = lohi
E1 DHW Mode Selects the DHW mode of operation.
OFF
1 (parallel, no priority),
2 (parallel, priority),
3 (pri-sec, no priority),
4 (pri-sec, priority)
Default = OFF
E1
DHW Exchange Occupied The minimum boiler supply
temperature to the DHW heat exchanger during the
Occupied period. (This item is only available when DHW
MODE is set to 1 through 4.)
OFF, 100 to 220°F
(OFF, 38 to 104°C)
Default = 180°F (82°C)
E1
DHW Exchange Unoccupied Selects whether or
not a DHW demand will be responded to during the
UnOccupied period. (This item is only available when
DHW MODE is set to 1 through 4.)
OFF, On
Default = OFF
E1
DHW Boilers Selects how many boilers are to be
operated during DHW generation. (This item is only
available when DHW MODE is set to 1 through 4.)
1 to Max number of
boilers
Default = Maximum
number of boilers
F1
Setpoint Mode Selects the Setpoint Mode of operation.
(This item is only available when DHW MODE is set to
OFF.)
1 (parallel, no priority),
2 (parallel, priority),
3 (primary pump),
Default = 1
F1
Setpoint Occupied The minimum supply temperature
when a setpoint demand is present during the Occupied
period. (This item is only available when DHW MODE is
set to OFF.)
OFF, 60 to 220°F
(OFF, 16 to 104°C)
Default = 180°F (82°C)
F1
Setpoint Unoccupied Selects whether or not a setpoint
demand will be responded to during the Unoccupied
period. (This item is only available when DHW MODE
is set to OFF.)
OFF, On
Default = OFF
E1
F1
Priority Override Sets the maximum amount of time the
control provides DHW or Setpoint priority before resuming
space heating. (This item is only available when Setpoint
MODE is set to 2, or when DHW MODE is set to 2 or 4.
OFF, 0:20 to 4:00 hr
(10 minute increments)
Default = OFF
D1
WWSD Occupied The system’s warm weather shut
down temperature during the Occupied period.
35 to 100°F, OFF
(2 to 38°C, OFF)
Default = 70°F (21°C)