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MODE 7 – External Direct Drive Operation
Applications
MODE 7 – EXTERNAL DRIVE OPERATION
The control receives a heat demand provided via an external analog input signal from a tekmar sequencing control (such
as a 265). The control turns on the boiler pump and the Stage 1 contact according to the external input signal.
MODE 7 – External Direct Drive Operation
View Menu (1 of 1)
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28
Model SF-10 Control Instructions Manual
External
0 - 10 V (dc)
Control
Direct Drive
Boiler
Supply
Sensor
A
c
c
e
s s
BOILER OUTLET
Factory
Current boiler outlet water temperature as measured by the
Installer
boiler outlet sensor.
BOILER INLET
Current boiler inlet water temperature as measured by the
Factory
boiler inlet sensor.
Installer
Note: This item is only available when a boiler inlet sensor is
installed.
BOILER DELTA T
Current temperature difference between the boiler outlet sensor
and the boiler inlet sensor.
Factory
Note: This item is only available when a boiler inlet sensor is
installed.
BOILER HOURS
The total number of running hours of the boiler since this item was
Factory
last cleared. Clear the numbers of hours by press and holding
the Up and Down buttons together while viewing this item.
2PDA
2PDA
BTC
Boiler
Boiler
Outlet
Outlet
Sensor
Sensor
Boiler Inlet Sensor
Boiler Inlet Sensor
D
s e
c
i r
t p
o i
n
BTC
R
14 to 266°F
(-10 to 130°C)
14 to 266°F
(-10 to 130°C)
0 to 252°F
(0 to 140°C)
0 to 999
a
n
g
e
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