tekmar 401 House Control Installation User Manual
Page 15
15 of 28
© 2011
D 401 - 07/11
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
SECTION B
Typically set to the temperature of the coldest day of
the year. The outdoor air temperature is used by the
boiler heating curve to determine the boiler target
temperature.
EMS2,
EMS1,
4-20
0-10,
2STG,
1STG
Default = 1STG
Installer
BOILER TYPE
SECTION E
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
VIEW
70 to 200°F
(21.0 to 93.5°C)
Default = 180°F
(82.0°C)
Installer
BOILER DESIGN
SECTION B
The supply water temperature required for the boiler
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)
OFF, 80 to 180°F
(26.5 to 82.0°C)
Default = 140°F
(60.0°C)
Installer
BOILER MINIMUM
SECTION B
The minimum allowed boiler target temperature.
Recommendations:
Condensing gas or electric boiler = OFF
Non-condensing gas and oil boilers = 140°F (60°C)
Note: If Boiler Type is 0-10 V (dc), 4-20 mA, EMS1
or EMS2, this setting is defaulted to Off.
ADJUST
sec
10 to 230 seconds
Default = 30
seconds
Installer
BOILER MOTOR
SECTION E
The time required for the modulating actuating motor
to fully open the gas valve or ramp the burner fan
from off to full speed on a modulating boiler. Set to
30 seconds unless otherwise recommended by the
boiler manufacturer.
Note: This item is only available when the Boiler
Type is 0-10 V (dc) or 4-20 mA.
ADJUST
0 to 50%
Default = 0%
Installer
MINIMUM MODULATION
SECTION E
The minimum percent modulation of the boiler
burner.
Note: This item is only available when the Boiler
Type is 0-10 V (dc) or 4-20 mA.
AD
J
U
S
T
M
E
N
U
Adjust Menu (1 of 2)
The Adjust menu items are the programmable settings used to operate
the mechanical equipment.
Continued on next page.