Submittal
Job __________________________
Designer ______________________
Contact _______________________
www.tekmarcontrols.com 1 of 2 © 2011 C 406 - 11/11
tekmarNet
®
2 House Control 406
C 406
11/11
Alternative
Energy
Replaces: New
Submittal
Energy Saving Features
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Outdoor Temperature Reset
Indoor Temperature Feedback
Warm Weather Shut Down
Zone Synchronization
Automatic differential for heat pump and
boiler
DHW Post Purge
Intelligent heat/cool switchover
System setback (with optional timer)
One touch overrides (with optional User
Switch)
Additional Features
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Expandable up to 52 zones
Controls 2-stage heat pump
Controls on/off or modulating boiler
Electric resistance backup optional
Variable speed mixing control
DHW control with priority
Equipment exercising
Floor cooling capable
Four 24 V (ac) powered zone valve outputs
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Specifications
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The tekmarNet
®
2 House Control 406 is designed to operate the equipment in a 2-pipe, single tank, hydronic heating and cooling
system. It operates two heat pump stages (water-to-water or air-to-water) with a backup heat source (boiler or electric resistance).
The heat pump provides either hot or chilled water to a storage tank loop and optional mixed temperature loop. For radiant heating,
the water temperature is calculated using outdoor temperature reset. For radiant cooling, the chilled water temperature is maintained
at an adjustable setpoint, or is adjusted using dew-point reset with a humidity sensor. A backup boiler can provide an outdoor reset
water temperature as well as domestic hot water and setpoint water temperatures. The 406 operates 4 on-board heating and cooling
zones and is expandable up to 52 zones on the boiler, tank, and mix water temperatures.
SPECIAL REQUIREMENTS
This control is designed to mount on a 4” x 4” electrical box, and must use tekmarNet
®
thermostats to communicate heat demands.
For floor cooling or hydronic cooling with a fan coil, use tekmarNet
®
2 thermostats 527, 528, 529, 530 or tekmarNet
®
4 thermostats 537,
538, and 540 with a date code of December 2011 or newer.
tN2 House Control 406 Heat Pump & Backup, Four Zone Valves
Literature D406, Q406
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 NEMA 1 rated, blue PC+ABS 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 90%
Noncondensing
Power supply 24 V (ac) ±10% 60 Hz, 100 VA max, Class 2
Control Load
2 VA
Zone, Y1 and O/B
Relays
24 V (ac) 3.7 A combined
Y2, Backup Relays 24 V (ac) 5 A
Pump Relays 115 V (ac) 5 A 1/6 hp
Variable Power 115 V (ac) 2.4 A
Pump Power 115 V (ac) 12 A
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
–Included Outdoor Sensor 070 and 4 of Universal Sensors 082
Warranty Limited 3 Year (See D406 for full warranty)
Menu
House Control 406
Item
+
Tank ComBoil HPRt OutCom
Zone 1
H8009B
Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Rc1 Y1 O/B
Sensors - No Power
No Power
Call Call
Mix/DHW
tN4 tN4CC
Mod dc/mA Boil / Mix Tank
Rc2 Y2
Setpoint DHW
RC
Input Power
Backup
VlvC VlvC VlvC
Zone 3Zone 1 Zone 2 Zone 4
VlvC
Front View Side View Back View
5–1/2”
(140 mm)
5–1/2”
(140 mm)
1–1/8” (30 mm)
7/8”
(22 mm)
CL
1/2” Knock-out (x 4)
Control designed to mount on 4” x 4”
electrical box (not included). For systems
that require 2 power sources of 115 V
(ac), a box extension ring is required to
increase box fill capacity.
Ø 1/8”
(3 mm)
7/8” x 1/2” (23 mm x 12 mm)
Knock-out (x 4)
1/2” x 5/8”
(12 mm x 16 mm)
Knock-out (x 4)
2–1/4”
(57 mm)
4–1/2” (114 mm)