tekmar 274 Boiler Control - Manual (Page 32)

© 2012 274_D - 11/12 32 of 44
Item Field Range Access Description Actual Setting
ADJUST
Lo, Med, Hi
Default = Med
INST
ADV
BOILER 1 MASS SECTION C
The thermal mass characteristics of the boiler.
Note: This item is only available when
Boiler 1 is set to Au.
ADJUST
1
Boiler
min
OFF, 0:10 to
19:55 minutes
Default = 0:20
min
ADV
BOILER PUMP 1 PURGE SECTION H
The time the boiler pump remains on once the
boiler is turned off.
Note: This item is only available when
Boiler 1 = Au and Mode = 2, 4 or 5.
Note: The previous 2 menu items will repeat for up to four boilers that are set to Au.
ADJUST
AUTO, 5 to 30
minutes
Default = Auto
ADV
CYCLE LENGTH SECTION M
The cycle length to which all tN4 devices will
synchronize.
Note: This item is only available when a tN4
device is present.
ADJUST
OFF,
1 (parallel, no priority)
2 (parallel, priority)
3 (pri-sec, no priority)
4 (pri-sec, priority)
5 (parallel with last
boiler, priority)
6 (dedicated DHW)
Default = OFF
ADV
DHW MODE SECTION E
This determines the operation of the primary
pump in combination with the DHW pump and
whether or not DHW priority is required.
Note: This item is only available when the Pump
Sequencing DIP is set to Off. DHW Mode 5 is
only available if Mode = 2.
ADJUST OFF, ON
Default = OFF
ADV
DHW SENSOR SECTION E
Selects if a DHW sensor is to be used for
DHW generation.
Note: This item is only available when the Pump
Sequencing DIP is to Off AND DHW Mode is
set to either 1, 2, 3 or 4.
ADJUST
Occ
OFF, 70 to
190°F (OFF,
21.0 to 87.5°C)
Default = 140°F
(60.0°C)
INST
ADV
DHW OCCUPIED SECTION E
The temperature of the DHW tank during the
Wake and Occupied periods.
Note: This item is only available when the DHW
Mode is set to either 1, 2, 3, 4 or 6 AND the DHW
Sensor is set to On AND the Pump Sequencing
DIP is set to Off.
ADJUST
UnOcc
OFF, 70 to
190°F
(OFF, 21.0 to
87.5°C)
Default = 120°F
(49.0°C)
ADV
DHW UNOCCUPIED SECTION E
The temperature of the DHW tank during the
Sleep and Unoccupied periods.
Note: This item is only available when the
DHW Mode is set to either 1, 2, 3, 4 or 6 AND
the DHW Sensor is set to On AND the Pump
Sequencing DIP is set to Off, AND the Setback
DIP = Setback.
Adjust Menu (4 of 6)
Continued on next page.
ADJUS
T MENU