tekmar 420 Boiler Reset Module - Manual (Page 8)

© 2007 D 420 - 08/07 8 of 24
Item Field Range Access Description
Au, 2 to 42°F
(Au, 1 to 23.5°C)
Default = Au
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BOILER DIFFERENTIAL SECTION C
The temperature differential that the control is to use
when it is operating the boiler.
10 to 230 seconds
Default = 30 seconds
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BOILER MOTOR SECTION C
The amount of time required for the modulating
actuating motor to fully open the gas valve or operate
the fan speed from a stopped position to full speed
on a modulating boiler.
Note:
This item is only available when the Boiler
On-Off / Mod DIP switch is set to Mod and the tekmar
Stager DIP switch is set to OFF.
0 to 50%
Default = 0%
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MINIMUM MODULATION SECTION C
The minimum percent modulation of the burner.
Note:
This item is only available when the Boiler
On-Off / Mod DIP switch is set to Mod and the tekmar
Stager DIP switch is set to OFF.
50 to 100%
Default = 100%
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MAXIMUM MODULATION SECTION C
The maximum percent modulation of the burner.
Note:
This item is only available when the Boiler
On-Off / Mod DIP switch is set to Mod and the tekmar
Stager DIP switch is set to OFF.
Au, 5 to 30 min
Default = Au
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CYCLE LENGTH
The cycle length to which all tN4 devices will
synchronize.
OFF, Mb1, Mb2, Mb3,
Mb4
Default = OFF
InS
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SCHEDULE
Selects which network setback schedule the control
will follow.
OFF,
1 (parallel, no priority)
2 (parallel, priority)
3 (pri-sec, no priority)
4 (Pri-sec, priority)
Default = 1
InS
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DHW MODE SECTION F
Selects the DHW mode of operation. This determines
the operation of the primary pump in combination
with the DHW pump and whether or not DHW priority
is required.
Adjust Menu (2 of 3)
Continued on next page.
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