tekmar 402 House Control Installation - Manual (Page 11)

11 of 32 © 2010 D 402 - 09/10
Applications
Mix
Boil
DHW
Variable
Speed
(P4)
(P1)
(P3)
(P2)
115 V (ac)
N L G
to pump grounds
N
L
Back of House Control 402
Strip wires
1/2 inch (13 mm).
Installed wires are
not removable.
12-18 AWG
R
C
L
N
Expansion
tN4 Boil
Ct
N
4
Expansion
tN4 Mix
Ct
N
4
(blue)
(red)
(black)
(black)
(black)
1
Menu
House Control 402
Item
+
Mix
Com
Boil
Out
DHW
Vlv C Vlv C Vlv C
Zone 3 Zone 1 Zone 2 Zone 4
Made in Canada
Vlv C
Com
Zone 1
H800
7B
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
DHW
Use at least 167°F
(75°C) conductors R C
Input Power
Stage 2
Stage 1
Boil System Pump
Mix System Pump
DHW Pump
Variable
Speed Pump
Pump Power L
Description: The House Control 402 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.
Single Boiler, DHW Tank, Variable Speed Mixing, 4 Mix Zones A402-1
402
070 S3
S2 S1
Outdoor
Sensor
(S3)
tekmarNet ® 2 Thermostats
Boiler T-T
24 V (ac)
Transformer 009
Mix Sensor (S2)
Boiler Sensor (S1)
DHW Call
Zone Valves (Z1 to Z4)
tekmarNet ® 4
Expansion to
Wiring Centers,
Timers, or
User Switch
tekmarNet ® 2 Thermostats
P1
P2
P3 P4
Z1 Z2 Z3 Z4