Ti Series Installation and Operation Instructions
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Trinity
43
Sentry 2100 Operation
The Trinity boiler employs a pneumatic modulation system. This modulation system increases or decreases the speed of the blower
to meet the demand for heating. The gas valve senses this change in blower pressure, and introduces the required amount of gas to
ensure correct combustion. The term “Set Point” is used to indicate the desired temperature that the Trinity will try and maintain,
by increasing or decreasing the input.
Table 12-2 Sentry 2100 Operation – Reset Mode
R
es
et
Mode
T-C & A-C Open
T-C Closed &
A-C open
T-C Closed &
A-C Closed
T-C Open & A-C
Closed
T-C & A-C Open
(Storage)
Note 3
Condition
Standby
Note 3
Heating Only
Domestic Only
Domestic Only
Storage Mode
Set Point
-
HI
Calc.
L0
L0
160
F
Burner On
-
HI
Calc
– DIF
(LO-10)
Note 4
(LO-10)
Note 4
140
F
Burner Off
-
HI
Calc
+ 10
200
F
200
F
180
F
Circ – C1
Off
On
Off
Note 1
Off
Note 1
On
Aux. Circ – Ap
Off
Off
On
Note 2
On
Note 2
On
Notes:
1-
For Combi units the pump output C1 (Circ - C1) is powered for both space heating and domestic hot water demands, see
Table 12-1 and Figure 12-2.
2-
For Combi units the pump output Ap (Aux. Circ - Ap) powers the 3-way diverter valve located in the boiler, see Table 12-1
and Figure 12-2.
3-
Combi units only, unit cycles on temperature (140-180ºF) for 1 to 24 hours (StO setting) after last domestic hot water call,
unless StO is set to OFF.
NOTICE:
Primary pump will run during Storage (StO) operation.
4-
For Combi units the burner turns on when the water temperature is less then 190
F on the initial call, afterwards it turns back
on when water temperature is less then LO set point.
Table 12-1 Sentry 2100 Operation – Conventional Mode
C
onventi
onal
Mode
T-C & A-C Open
(No Storage)
T-C Closed &
A-C open
T-C Closed &
A-C Closed
T-C Open &
A-C Closed
T-C & A-C Open
(Storage)
Note 3
Condition
Standby
Heating Only
Domestic Only
Domestic Only
Storage Mode
Set Point
-
HI
L0
L0
160
F
Burner On
-
HI – DIF
(LO-10)
Note 4
(LO-10)
Note 4
140
F
Burner Off
-
HI + 10
200
F
200
F
180
F
Circ – C1
Off
On
Off
Note 1
Off
Note 1
On
Aux. Circ – Ap
Off
Off
On
Note 2
On
Note 2
On