tN2 House Control 401 - Boiler, DHW & Setpoint, Four Zone Pumps

The tekmarNet^® 2 House Control 401 is designed to operate all of the mechanical equipment in a residential hydronic heating system, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler, to multiple radiant floor zones with a modulating/condensing boiler. This control regulates one space heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off, two stage, or modulating boiler, Domestic Hot Water, setpoint loads, 4 on-board zone pumps, and can expand up to 24 zones in total.

Note: There are multiple products which the 401 can replace depending on the application. Some conditions apply; please contact Customer Service for more information.

Features & Specs

Features (definitions)

• Automatic Boiler Differential

• Boiler Protection

• DHW Post Purge

• DHW Priority (optional)

• DHW control

• Exercising

• For use with tekmarNet^®2 thermostats ONLY

• Four 115 V (ac) powered zone outputs

• Indoor Temperature Feedback

• One touch overrides (with optional User Switch)

• Only requires 2 Wires Per Zone

• Outdoor Temperature Reset

• Powered pump outputs

• Setpoint operation

• Single on/off, two stage, or modulating boiler control

• System Setback (with optional Timer)

• Warm Weather Shut Down

• Zone Synchronization

• tN4 expansion terminals

Specifications

Control	Microprocessor control. This is not a safety (limit) control
Packaged weight	1.4 lb (640 g)
Dimensions	5.5" H x 5.5" W x 2.25" D (140 x 140 x 57 mm)
Enclosure	Blue PC+ABS plastic, NEMA type 1
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 ≤90% Non-condensing
Power supply	24 V (ac) ±10%, 60 Hz, 100 VA max, Class 2
Control load	2 VA
Pump power	115 V (ac) 12 A max
Pump relays	115 V (ac) 5 A, 1/6 hp
Boiler stage 1, 2 relays	24 V (ac) 5 A
Setpoint and DHW calls	Short, 0 - 32 V (ac)
Boiler modulation output	0 - 10 V (dc) 500 Ω min load impedance, 4 - 20 mA 1 kΩ max load impedance
Sensors	NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included	Outdoor Sensor 070 and Universal Sensor 082
-Optional	tekmar type#: 033, 479
Warranty	Limited 3 Year Warranty

Technical

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.

Current Literature

Product Submittal	Jan 2011 - Present	401_C
Installation & Operation Manual	Jul 2011 - Present	401_D
Quick Setup Guide	Sep 2010 - Present	401_Q

Service Bulletins

Active Service Bulletins

Installing House Controls 400, 401, 402 and 403 with Modulating Boilers

Mar 2011 - Present

SB0064

Archived Service Bulletins

Modulating Boiler Interface Revision 8

Mar 2011 - Mar 2011 (Updated March 2011)

SB0032

tekmar Accessory Products (21 total)