Tekmar tekmarNet 402 User manual

1 of 4 © 2010 Q402 - 09/10
tekmarNet®2 House Control 402
Q402
09/10
HVAC Systems Replaces: 06/09
Quick Setup Guide
Location1. Install Junction Box2.
Size Transformer3.
Install Sensors4. Line Voltage Wiring5.
402 402
OR
Zone 1234
Thermostat Load
Zone Valve Load Floating
Action (VA) Control Load (VA)
Total Zone Load + ++++ 2
Transformer
must exceed:
VA
Sensor with bottom
entry wiring
Sensor with rear
entry wiring Sensor mounted onto 2" x 4"
electrical box
Mix
Boil
DHW
Variable
Speed
115 V (ac)
N
LG
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
(blue)
(red)
(black)
(black)
(black)
Boil System Pump
Mix System Pump
DHW Pump
Variable
Speed Pump
Pump Power L
Pipe Sensors
Outdoor Sensors
Sensor Well
Retaining Clip
Universal
Sensor 082

© 2010 Q402 - 09/10 2 of 4
Install Enclosure6.
Install Cover8.
Menu
House Control 402
Item
Low Voltage Wiring7.
R
C
L
N
Com
Open
Close
Expansion
tN4 Boil
CtN4
Modulating
Boiler
—+
Expansion
tN4 Mix
CtN4
2
1
WC
WC
Menu
House Control 402
Item
+
Mix ComBoil Out DHW
VlvCVlvCVlvC
Zone 3Zone 1 Zone 2 Zone 4
Made in Canada
VlvC
Com
Zone 1
H8007B
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
Use at least 167°F
(75°C) conductors
RC
Input Power
Stage 2Stage 1
Zone Valves 24 V (ac) Transformer 009
DHW Call
from DHW
Tank Aquastat
(optional)
Setpoint Call
Outdoor
Sensor
070
Mix Supply
Sensor 082
Boiler Supply
Sensor 082
DHW Tank
Sensor 082
One or Two Stage
Boiler T-T
tekmarNet®2 Thermostats
24 V (ac) Floating
Action Actuator
tekmarNet®4
Expansion to
Wiring Centers,
Timers, or
User Switch

3 of 4 © 2010 Q402 - 09/10
User Interface9.
MONITOR
VIEW
ADJUST
MAXMIN
Boil Exp
Mix Exp
DHW Setp
Boil System
Mix System Zones
Cls
Opn
DHW Var 1 2 3 4 1 2 Mix
AM
min
sec hr
PM
Calls Pumps WWSD Saving
Item Field
Displays the name
of the selected item
Number Field
Displays the
current value of
the selected item
Status Fields
Displays the current
status of the control’s
inputs, outputs and
operation. Most symbols
in the status field are
only visible when the
VIEW Menu is selected
Menu Field
Displays the
current menu
Calls CALLS
Displays any call for heat the control is
receiving.
Pumps PUMPS
Displays any pump currently operating.
Zones
1 2 3 4
ZONES
Displays if an on-board zone is operating.
WARNING
Displays if an error exists on the system.
Saving ENERGY SAVING INDICATOR
Displays when the system is saving
energy. See the Saving Indicator section.
WWSD
WWSD
Displays when the system is in Warm
Weather Shut Down.
°F°C
minhr
sec%
°F, °C, %, HOURS, MINUTES, SECOND
Units of measurement for current number.
UNOCCUPIED
Indicates that a User Switch or Timer has
put the system into UnOccupied.
BOILER
Indicates that the boiler should be
heating.
DEVICE OUTPUT SCALE
Displays output of the mixing valve or
injection pump.
Cls
Opn
CLOSE / OPEN
Displays whether the mixing valve motor
is opening or closing.
MAXMIN
MIN / MAX
Displays when an operating temperature
reaches a minimum or maximum value.
Symbols
Display
INST (Installer)
or USER
Default = INST
ACCESS LEVEL
Selects the Access Level of the control, which determines the Menu items
available. USER provides the most limited level of access and shows
the fewest possible items.
When set to USER, all thermostats are locked and the number of
thermostat settings available are reduced.
Access Level10.
Press menu button until the Toolbox Menu is displayed. Press
item button to locate the access level setting.

Product design, software and literature are Copyright © 2010 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc. 4 of 4 All specifications are subject to change without notice. Printed in Canada. Q402 - 09/10.
tekmar Control Systems Ltd., Canada, tekmar Control Systems, Inc., U.S.A. Head Office: 5100 Silver Star Road,
Vernon, B.C. Canada V1B 3K4, 250-545-7749, Fax. [phone] Web Site: www.tekmarcontrols.com
Press menu button until the Adjust Menu is displayed. Press item
button to locate the desired setting.
Item Field Range Access Description Set to
ADJUST -60 to 45°F
(-51.0 to 7.0°C)
Default = 10°F
(-12.0°C)
Installer
OUTDOOR DESIGN
Typically set to the temperature of the coldest day of
the year. The outdoor air temperature used in the boiler
and mixing heating curves that determine the boiler
target and the mix target temperatures.
ADJUST 70 to 180°F
(21.0 to 82.0°C)
Default = 120°F
(49.0°C)
Installer
MIX DESIGN
The supply water temperature required for the mix
zones to heat the building on the typical coldest day
of the year. Recommendations:
High mass radiant floor = 120°F (50°C)
Low mass radiant floor = 140°F (60°C)
Fancoil or air handling unit = 190°F (90°C)
Copper fin-tube convector = 180°F (80°C)
Radiators = 160°F (70°C)
Low profile baseboard = 150°F (65°C)
ADJUST 4-20 mA,
0-10 V (dc)
FLOT,
VAR
Default = VAR
Installer
MIX TYPE
Select the type of mixing device.
VAR = Variable speed injection pump
FLOT = Floating action motor for mixing valves
0-10 = 0 -10 V (dc) analog signal for mixing valves
4-20 = 4-20 mA analog signal for mixing valves
Note: 0-10 and 4-20 are only available when Boiler
Type = 1 Stage or 2 Stage.
EMS2,
EMS1,
4-20
0-10,
2STG,
1STG
Default = 1STG
Installer
BOILER TYPE
The type of boiler connected to the control.
1STG = single one-stage on-off boiler
2STG = single two-stage on-off boiler
0-10 = 0-10 V (dc) modulating boiler
4-20 = 4-20 mA modulating boiler
EMS1 = tekmar boiler staging controls
EMS2 = Viessmann modulating boilers with
OpenTherm
Note: Only 1STG and 2STG are available when the
Mix Type is set to 0-10 V (dc) or 4-20 mA.
Critical Settings11.