
© 2014 401_Q - 02/14
2
A Watts Water Technologies Company
6. Low Voltage Wiring
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7. Install Cover
R
C
L
N
Expansion
tN4 Boil
CtN4
Modulating
Boiler
—+
2
1
Back of
House Control 401
Menu
House Control 401
Item
+
ComBoil Out DHWCom
Zone 1
H8006C
Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Sensors - No Power
Call Call
tN4 C
Mod dc/mA Boil Exp.
Setpoint DHW
RC
Input Power
Use at least 167°F
(75°C) conductors
Stage 2Stage 1
24 V (ac) Transformer 009
DHW Call
from DHW
Tank Aquastat
(optional)
Setpoint Call
Outdoor
Sensor
070
Boiler Supply
Sensor 082
DHW Tank
Sensor 082
One or Two Stage
Boiler T-T
tekmarNet
®
2 Thermostats
tekmarNet
®
4
Expansion to
Wiring Centers,
Timers, or
User Switch
5. Install Enclosure
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