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Applications
Single Boiler, DHW Tank, Variable Speed Mixing, 4 Mix Zones
Description: The House Control 403 operates an On/Off boiler with indirect Domestic Hot Water. Mixing is performed with
variable speed injection, which supplies an outdoor reset water temperature to the 4 onboard mix temperature hydronic
zones. Additional zones (boiler or mix) can be added using the tN4 Expansion terminals.
Mix Sensor (S2)
Boiler Sensor (S1)
Outdoor
Sensor
(S3)
DHW Call
L1
N1
115 V (ac)
070
S3
P2
S1
P1
tekmarNet
Made in Canada
(black)
(P1)
Boil Sys
(black)
(P2)
DHW
(red)
L
(blue)
Variable
Speed
N
(P3)
to pump grounds
G
403
Z1
S2
P3
®
2 Thermostats
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
C
Opn
Cls
Zone 1
Zone 2
Zone 3
Zone 4
Floating Action
Menu
Item
House Control 403
Input Power
Use at least 167°F
(75°C) conductors
C
R
R
C
Back of House Control 403
(black)
Zone 3
Zone 4
(black)
Boil Sys Pmp
Zone 2
(black)
Zone 1
DHW Pump
(black)
Pump
Zone Power
Power
(red)
Variable
Speed Pump
to pump grounds
11 of 32
®
tekmarNet
2 Thermostats
Z2
Z3
Z4
tekmarNet
Expansion to
tN4 Mix
Expansion
Wiring Centers,
Timers, or
tN4 Boil
Expansion
User Switch
1
Boiler T-T
24 V (ac)
L
Transformer 009
N
Zone 4
(Z4)
Zone 3
(Z3)
Zone 2
(Z2)
Zone 1
(Z1)
L
N
G
N2
L2
115 V (ac)
© 2011
A403-1
®
4
D 403 - 07/11
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