Install Instructions

© 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
CtN4
Modulating
Boiler
—+
Expansion
tN4 Mix
CtN4
2
1
314
115 V (ac)
N1L1 G
115 V (ac)
N2GL2
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 ComBoil Out DHWCom
Zone 1
H8008A
Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
C
Floating Action
ClsOpn
Sensors - No Power
Call Call
tN4 tN4CC
Mod dc/mA Boil Exp. Mix Exp.
Setpoint DHW
RC
Input Power
Made in Canada
Use at least 167°F
(75°C) conductors
Stage 2Stage 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)