The Mixing Expansion Module 444 is designed to operate a mixing device within a hydronic heating system as part of a tekmarNet® control system. It is capable of controlling a mixed system pump and six optional outputs for mixing: a variable speed injection pump, a floating action actuator, or an analog 0-10 V (dc), 2-10 V (dc), 0-20 mA, or 4-20 mA signal.
Analog 0-10 V (dc) or 2-10 V (dc) output
Analog 0-20 mA or 4-20 mA output
CSA C US certified for use in USA and Canada
Powered 120 V (ac) system pump
Powered 24 V (ac) floating action output
Powered 24 V (ac) system pump output
Powered variable speed injection pump
Requires a tekmarNet® 4 system control
| Control | Microprocessor control. This is not a safety (limit) control |
| Packaged weight | 1.1 lb. (500 g) |
| Dimensions | 4-3/4" H x 2-7/8" W x 1-7/8" D (120 x 74 x 48 mm) |
| Enclosure | White PVC plastic |
| Approvals | CSA C US, meets Class B: ICES & FCC Part 15 |
| Ambient conditions | Indoor use only, 32 to 104°F (0 to 40°C), RH ≤92% to 104°F (40°C), and 50% above 104°F (40°C), Altitude <9840 ft. (3000 m), Pollution Degree 2 |
| Power supply | 24 V (ac) ±10%, 50/60 Hz, 4 VA standby, 56 VA fully loaded |
| System pump relay (front) | 24 V (ac) 2A |
| System pump relay (back) | 120 V (ac) 5A, 1/6 hp |
| Variable pump | 120 V (ac) 2.4 A, internal overload circuit T2.5 A 250 V |
| Floating output | 24 V (ac) 8 VA maximum, triac output, minimum 0.6 VA |
| Modulation output (voltage) | 0-10V / 2-10 V (dc), minimum 10kΩ load |
| Modulation output (current) | 0-20 mA / 4-20 mA, maximum 1kΩ load |
| Sensors | NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 |
| -Included | Universal Sensor 082 |
| Warranty | Limited 3 Year Warranty |
In most cases the current version of literature will work, otherwise use the piece of literature most closely matching the date code of your product.
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Product Submittal |
Jan 2011 - Present |
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Installation & Operation Manual |
Apr 2007 - Present |
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Job Record |
Aug 2009 - Present |
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Wiring Brochure |
Dec 2008 - Present |