Mixing Reset Module 421 - One tekmarNet®4, Mixing Mixing Reset Module 421 - One tekmarNet®4, Mixing
Control Description The Mixing Reset Module 421 provides outdoor reset to a hydronic heating system in order to maximize comfort and efficiency. The 421 can operate a single on / off boiler and a single mix water temperature. To operate two mixing devices, a Mixing Expansion Module must be connected to the 421. The mix output can operate a floating action mixing valve or a variable speed injection pump.
Control |
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Microprocessor PID control; This is not a safety (limit) control |
Packaged Weight |
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1.75 lb. (794 g) |
Dimensions |
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3-5/8" H x 5-3/8" W x 9/16" D (92 x 137 x 14 mm) |
Approvals |
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CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15 |
Ambient Conditions |
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Indoor use only, 32 to 122°F (0 to 50°C). |
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RH equal to or less than 80% to 88°F (31°C), down to 50% from 104 to 122°F (40 to 50°C) |
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Altitude <2000 m, Installation Category II, Pollution Category 2 |
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Power Supply |
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Provided by interconnected Zone Manager |
System P1 Pump Relay |
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115 V (ac) 5 A 1/4 hp, pilot duty 240 VA |
Variable Speed Pump |
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115 V (ac) 2.5 A 1/6 HP, fuse T2.5 A 250 V |
Combined Load |
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7.5 A Maximum (System and Variable Speed Pump) |
Floating Action Output |
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24 V (ac) 8 VA Maximum |
Boiler Relay |
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115 V (ac) 5 A 1/4 hp, pilot duty 240 VA |
Demands |
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20-260 V (ac) / 0.1 VA @ 24 V |
Sensors |
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NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 |
Included |
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Outdoor Sensor 070 and 2 of Universal Sensor 071 |
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Quick 002 003 004 005 007 011 024 031 032 033 039 040 060 062 070 071 072 073 076 077 078 079 080 081 082 083 084 090 092 132 150 152 153 155 156 157 161 162 256 257 260 261 262 263 264 265 268 269 270 279 325 326 335 336 337 345 346 356 360 361 362 363 364 365 369 374 420 421 422 423 440 441 444 479 480 481 507 508 509 510 511 512 537 538 540 541 542 543 544 545 546 650 664 665 667 704 710 720 741 |
Copyright ©2007 tekmar Control Systems Ltd. |