tekmar 268 Boiler Control - Manual (Page 28)

© 2010 D 268 - 11/10 28 of 32
Adjust Menu (4 of 4)
E1
DHW Boilers Selects how many boilers are to be
operated during DHW generation. (This item is only
available when the last boiler in MODES 1, 4, and 5 is
set to OFF and 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 and
the last boiler in MODES 1, 4 and 5 are set to OFF.
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.
(This item is only available if the External Input / Stand
Alone DIP switch is set to Stand Alone)
35 to 100°F, OFF
(2 to 38°C, OFF)
Default = 70°F (21°C)
D1
WWSD UnOccupied The system’s warm weather shut
down temperature during the UnOccupied period.
(This item is only available if the External Input / Stand
Alone DIP switch is set to Stand Alone)
35 to 100°F, OFF
(2 to 38°C, OFF)
Default = 60°F (15.5°C)
C1
Primary Pump Purge
The maximum length of time that the primary pump will
continue to operate after the boiler demand has been
removed.
OFF, 0:10 to 19:55 min
Default = 0:20 min
C1
Boiler Pump Purge
The length of time that the boiler pump will continue to
run after the last stage in the boiler has turned off. (This
item is only available in modes 2, 4, 6 and 8.)
OFF, 0:10 to 19:55 min
Default = 0:20 min
A
Boiler Alert The alert signal will be activated if the
boiler supply temperature does not increase within the
selected time. (This item is only available when the Alert
/ C.A. DIP switch is set to Alert.)
OFF, 3 to 40 min
(1 minute increments)
Default = 20 min
Units The units of measure that all of the temperatures
are to be displayed in by the control. °F, °C
Default = °F
Display Description Range
Section Installer Ad
vanced
Actual
Setting