Application Guide

© 2019 tekmar 671
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A - 08/19 11 of 16
Two Zones with Common Mixing A671-5 Mechanical
B1, B2 = Modulating Boilers
M1 = Actuator Motor 741
P1 = Zone 1 Pump
P2 = Zone 2 Pump
S1a = Zone 1 Snow/Ice Sensor 090 or 094
S1b = Zone 2 Snow/Ice Sensor 090 or 094
S2a = Zone 1 Snow Sensor 095
S2b = Zone 2 Snow Sensor 095
S3a = Zone 1 Slab Sensor 072 or 073
S3b = Zone 2 Slab Sensor 072 or 073
S4 = Outdoor Sensor 070
S5 = 423 Boiler Supply Sensor 082
S6 = 444 Mix Supply Sensor 082
V1 = 3-Way Mixing Valve 710 through 714
X1 = Transformer 009
Legend
400
S1a S1b
S2a
S2b
S3a
S3b
P1 P2
671 671
tN4 Mix 1 Bus
Zone #1 Zone #2
Zone #1
Snow/Ice Sensor Options
Zone #2
Snow/Ice Sensor Options
671 Application Settings
Setting Name Value
Boiler Type Control
Outdoor Sensor tekmarNet