tekmar 420 Boiler Reset Module - Manual (Page 7)

7 of 24 © 2007 D 420 - 08/07
Item Field Range Access Description
-60 to 45°F
(-51.0 to 7.0°C)
Default = 10°F
(-12.0°C)
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OUTDOOR DESIGN SECTION B
The design outdoor air temperature used in the heat
loss calculations for the heating system. Typically set
to the temperature of the coldest day of the year.
1 HRF1
2 HRF2
3 Fancoil
4 Fin-tube Convector
5 Radiator
6 Baseboard
Default = 4
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BOILER TERMINAL SECTION B
The type of heating terminal units that are being
used in boiler zones.
40 to 100°F
(4.5 to 38.0°C)
Default = 70°F
(21.0°C)
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BOILER INDOOR SECTION B
The design indoor air temperature used in the heat
loss calculation for the boiler zones. Typically set to
70°F (21.0°C).
70 to 220°F
(21.0 to 104.5°C)
Default = 180°F
(82.0°C)
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BOILER DESIGN SECTION B
The supply water temperature required for boiler
zones on the typical coldest day of the year.
OFF, 80 to 180°F
(OFF, 26.5 to 82.0°C)
Default = 140°F
(60.0°C)
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BOILER MINIMUM SECTION C
The minimum allowed boiler target temperature and
boiler return protection temperature. Check the boiler
manufacturer’s manual for recommend supply water
temperatures.
120 to 225°F, OFF
(49.0 to 107.0°C, OFF)
Default = 200°F
(93.5°C)
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BOILER MAXIMUM SECTION C
The maximum allowed boiler target temperature.
0:00 to 3:00 min
Default = 0:10 min
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FIRE DELAY SECTION C
The time delay the control can expect between the
time that the relay contact closes to fire the boiler
and when the burner actually fires.
Adjust Menu (1 of 3)
The Adjust Menu items are the programmable settings
used to operate the mechanical equipment.
Continued on next page.
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