tekmar 403 House Control Installation - Manual (Page 12)

© 2011 D 403 - 07/11 12 of 32
Description: The House Control 403 operates a modulating boiler with indirect Domestic Hot Water. Mixing is performed with
a three-way floating action mixing valve, which supplies a reset water temperature to four mix temperature hydronic zones.
Four boiler water temperature zones shown are operated by a Wiring Center through the tN4 Boil Expansion terminals.
R
C
L
N
Com
Open
Close
Expansion
tN4 Boil
Ct
N
4
Modulating
Boiler
—+
Expansion
tN4 Mix
Ct
N
4
2
1
314
115 V (ac)
N1 L1 G
115 V (ac)
N2 G L2
to pump grounds to pump grounds
N N
L L
Back of House Control 403
Boil Sys Pmp
DHW Pump
Variable
Speed Pump
Pump
Power
Zone 4 Zone 3
Zone 2
Zone 1
Zone Power
(blue)
(red)
(black)
(black)
(red)
(black)
(black)
(black)
(black)
Menu
House Control 403
Item
+
Mix
Com
Boil
Out
DHW
Com
Zone 1
H8008A
Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2 C
Floating Action
Cls Opn
Sensors - No P
ow
er
Call
Call
tN4
tN4
CC
Mod dc/mA
Boil Exp.
Mix Exp.
Se
tpoint
D
HW
R C
Input Power
Made in Canada
Use at least 167°F
(75°C) conductors
Stage 2
Stage 1
403
070
314
Single Boiler, 4 Boiler Zones, DHW, 3 Way Mix, 4 Mix Zones A403-2
S3
S1 S2
S4
24 V (ac)
Transformer 009
DHW Sensor (S4)
Boiler Sensor (S1)
Mix Sensor (S2)
tekmarNet ® 2 Thermostats
Outdoor
Sensor
(S3)
tekmarNet ® 4
Expansion to
Wiring Centers,
Timers, or
User Switch
tekmarNet ® 2 Thermostats tekmarNet ® 2 Thermostats
(if applicable)
P1
P2
Z1 Z2 Z3 Z4
Boil Sys
DHW
Zone 4
Zone 3
Zone 2
Zone 1
(P1)
(P2)
(Z4)
(Z3)
(Z2)
(Z1)