© 2014
400_Q - 02/14
2
A Watts Water Technologies Company
6. Install Enclosure
8. Install Cover
Menu
House Co
ntrol 402
Item
7. Low Voltage Wiring
Expansion
tN4 Boil
Ct
N
4
Modulating
Boiler
—+
2
1
R
C
L
N
Menu
House Control 400
Item
+
Com
Boil
Out
DHW
Vlv
C
Vlv
C
Vlv
C
Zone 3
Zone 1
Zone 2
Zone 4
Vlv
C
Com
Zone 1
Zone 2
Zone 3
Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Sensors - No P
ow
er
Call
Call
tN4
C
Mod dc/mA
Boil Exp.
Se
tpoint
DHW
R
C
Input Power
H8005D
Use at least 167°F
(75°C) conductors
Stage 2
Stage 1
Zone Valves
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
