tekmar 421 Mixing Reset Module - Manual (Page 8)

© 2007 D 421 - 08/07 8 of 20
Item Field Range Access Description
30 to 230 seconds
Default = 105
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MIX MOTOR
The time that the actuating motor requires to operate
from fully closed to fully open.
Note: This item is only available when the Mix Mode
setting is set to floating action (FLt).
OFF, 80 to 180°F
(OFF, 26.5 to 82.0°C)
Default = 140°F
(60.0°C)
InS
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BOILER MINIMUM SECTION D
The minimum allowed boiler target temperature and
boiler return protection temperature. Check the boiler
manufacturer’s manual for recommend supply water
temperatures.
Au, 2 to 42°F
(Au, 1 to 23.5°C)
Default = Au
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BOILER DIFFERENTIAL SECTION D
The temperature differential that the control is to use
when it is operating the boiler.
Note: This item is only available when the Boiler
Sensor Sup / Ret DIP switch is set to Sup and the
tN4 DIP switch is set to Boiler.
Au, 5 to 30 min
Default = Au
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CYCLES PER HOUR
The cycle length that all tN4 device heating zones
will synchronize to.
NONE, Mbr1, Mbr2,
Mbr3, Mbr4
Default = NONE
InS
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SCHEDULE
Selects which network setback schedule the control
will follow.
40 to 100°F, OFF
(4.5 to 38.0°C, OFF)
Default = 70°F (21.0°C)
InS
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WWSD OCCUPIED SECTION B
The system’s warm weather shut down temperature
during the Wake and Occupied periods.
40 to 100°F, OFF
(4.5 to 38.0°C, OFF)
Default = 60°F (15.5°C)
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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 Schedule
is not set to OFF.
Adjust Menu (2 of 2)
ADJUS
T MENU
After the last item, the control returns to the first item in the menu.