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Once the room thermostat is satisfied, it breaks power to the TT terminal of the pump controller, which opens the X –X contacts, which
opens the T-C circuit. The Pumps and burner turn off.
In an injection system, it is important to understand the effect of flow and temperature set points. It may be necessary to program the
Sentry controller higher than the desired Mix temperature of the Hottest Loop.
Consult the Tekmar installation manual for detail installation and operation of this control.
8.0 SENTRY 2100 CONTROLLER
(Caution: Sentry controller used on Ti400 is different then the Sentry controller used on Ti100-200 models. The T4.1
controller can only be used on Ti400’s, while the T2.2 controller can only be used on Ti100-Ti200’s)
The Sentry controller is the central controller for the Trinity boiler. The Sentry handles all the combustion logic,
together with the energy management functions. The Sentry 2100 operates in two different modes, reset or
conventional. The mode is automatically determined by the presence of the outdoor sensor. When the Sentry 2100
detects the presence of the outdoor sensor the controller will operate in Reset Mode. If the outdoor sensor is not
installed, the controller will operate in Conventional Mode. If outdoor sensor is connected after start-up boiler must
be powered off and on.
8.1 Sentry 2100 Display
The following describes the meaning of the lights on the Sentry controller.
Green Lights:
Burner/Bruleur = Indicates that the ignition system
is activated
Circ. = Indicates that the heating pump is energized
Circ. Aux.= Indicates a call for DHW, and Indirect
pump or 3-way valve is activated.
Thermostat Demand= Indicates that terminals T-C
are closed, iniating a call for heat.
Water Temp= When
illuminated, indicates
that the display is
showing boiler water
temperature.
Air = If the air sensor is
being used. When
illuminated, indicates that
the display is showing
outdoor air temperature.
Gas Input Value= When
illuminated, indicates the
current input level (46-240
on Ti100-150, 40-240 on
Ti200, 35-195 on Ti400).
See Chart to determine
input.
DHW Temp. = When
illuminated, indicates
that there is a call for
domestic hot water.
Display Data - Input conversion chart
0
50
100
150
200
250
300
350
400
240 215 190 165 140 115 90 65 48 40
LED Display
BTU (000's)
Ti150 Ti200
Ti400 Ti100
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