tekmar 406 House Control Installation - Manual (Page 13)

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WATER TEMP T+MB (tank + mix + boiler)
ZONES 1-4 MIX
BACKUP XFER (transfer pump)
BOIL TYPE 1STG (1 stage)
HP LOOP ON
HP TYPE ROT (rotate)
DHW MODE OFF
Expansion
Tank
Freeze
Protection
Device
Application Settings
Mechanical A406-2
S1
S2
S5 S4
tekmarNet ® 2 Thermostats tekmarNet ® 2 Thermostats
P1
P2
Z1 Z2 Z3 Z4
P5
Z5 Z6 Z7 Z8
Backup:
Electric Boiler
2 Air to Water
Heat Pumps
P7
Description: The House Control 406 operates two air 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 314. An electric boiler supplies backup heat using the Backup relay and the Transfer Pump P7.
By setting HP LOOP to ON, the HP Loop Pump P2 will operate whenever there is a call on the tank or mix bus, or when the
transfer pump is on to ensure flow through the storage tank while heating or cooling.
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.
2-Port
Storage tank
Coaxial
Heat Exchanger
S3
314
P1 Variable Speed Pump
P2 HP Loop Pump
P5 Mix System Pump
P7 Transfer Pump
S1 Outdoor Sensor
S2 HP Return Sensor
S3 Boiler Sensor
S4 Tank Sensor
S5 Mix Sensor
Legend
406