Mechanical a406-5 – tekmar 406 House Control Installation User Manual
Page 19
19 of 48
© 2012 406_D - 11/12
Description: The House Control 406 operates two water source heat pumps in heating or cooling mode to supply an outdoor
reset water temperature to 4 on board mix temperature zones and 4 tank zones connected to the Tank expansion terminals
with a Wiring Center 313. The 406 also operates a modulating condensing boiler to supply an outdoor reset water temperature
to 4 boiler zones connected to the Boil expansion terminals with a Wiring Center 314. The boiler supplies backup heat to the
tank loop using the transfer pump P7.
Mixing is useful to separate the hot and cold water temperatures required for fancoils from the warm and cool temperatures
required for radiant floor heating and cooling. The Variable Speed Pump P1 is able to mix the water temperature down for
heating or mix the water temperature up above the dewpoint for floor cooling.
Expansion
Tank
Mechanical
A406-5
S1
S2
S5
P3
tekmarNet
®
2 Thermostats
tekmarNet
®
2 Thermostats
P2
Z1
Z2
Z3
Z4
P5
Z9
Z10 Z11 Z12
Backup:
Mod Con
Boiler
P6
S3
A1
P1
Z5
Z6
Z7
Z8
P7
P4
S4
tekmarNet
®
2 Thermostats
Two
Water to Water
Heat Pumps
IMPORTANT
When a three water temperature application is selected (WATER TEMP = T+MB), either the Mix or Boiler bus is limited to
the 4 tN2 on board thermostats, and the gateway controls 482 and 483 are unable to communicate to the four on-board tN2
zones on the House Control 406.
•
WATER TEMP
T+MB (tank + mix + boiler)
ZONES 1-4
MIX
BACKUP
XFER (transfer pump)
BOIL TYPE
0-10
HP LOOP
INT
HP TYPE
ROT (rotate)
DHW MODE
4
Application Settings
P1
Variable Speed Pump
P2
HP Loop Pump
P3
Boiler System Pump
P4
Tank System Pump
P5
Mix System Pump
P6 DHW
Pump
P7
Transfer Pump
S1
Outdoor Sensor
S2
HP Return Sensor
S3
Boiler Sensor
S4
Tank Sensor
Legend
314
406
313
S5
Mix Sensor
A1
DHW Aquastat