9
OPERATING INSTRUCTIONS
V-10 TOUCH SCREEN BOILER CONTROLLER
Depending on the settings it’s possible for the indoor temperature to overshoot
the desired indoor temperature. Reducing the Ramp Speed Value will help
reduce this overshooting issue.
The factory Ramp Speed setting is Auto. While set to Auto the controller uses
the selected heat emitter type to automatically determine an appropriate ramp
speed. The installer can manually set the Ramp Speed by choosing a value from
1 to 10. A setting of 1 will raise the water temperature very slowly and 10 will
raise the water temperature very quickly. Auto, the factory setting, is generally
the best setting to choose.
Priority – Each load has a priority value between 20 and 90, the Priority Value
has to be different for each load. A higher numerical value means a higher
priority. Consider these values as minutes. The difference between 2 load
priority values is the number of minutes the higher priority load will be allowed
to operate before switching back to the lower priority load. For example, if DHW
has a priority of 80 and the Set Point load has a priority of 50, the DHW load will
operate for (80-50) 30 minutes while the Set Point load is temporarily turned off.
Also see section 1.7.1.
Pump Post Purge (sec) – Each load pump can be operated for a period of time
after the call for heat has ended. This feature takes the heat left-over in the heat
exchanger and nearby boiler piping after the burner has turned off and pumps it
into the load. A good example of this is the indirect water heater DHW load. After
the tank has reached its target temperature, the boiler shuts down but allows
the load pump to operate for a period of time to transfer heat that is stored in
the boiler’s heat exchanger into the hot water tank. This feature is adjustable in
seconds from 0 to 900 (15 min). If the load has zone valves that close off the ow
to the load as the boiler shuts down then this can be set to 0 sec. Each load can
be set independently of each other to provide maximum exibility.
Boiler Pump Purge Time (Site Settings) is adjustable independently of the
4 load pumps. Many installations will use a primary (boiler) loop and it is
recommended that the boiler pump operate for 3 – 5 minutes after all calls for
heat have been satised.
Indoor ° From – The default setting is Indoor. If an indoor temperature sensor
is being used the sensor will normally be connected to the TB2 Indoor Sensor
terminals on the controller board. Alternatively the TB2 2nd Loop Sensor input
terminals can be wired to the indoor temperature sensor. To support this alternate
connection the Indoor ° From setting must be Sec. Loop.
Outdoor ° From – The Default setting is Outdoor. If an outdoor temperature
sensor is being used the sensor will normally be connected to the TB2 Outdoor
Sensor terminals on the controller board. Alternatively the TB2 2nd Loop Sensor
or the DHW Sensor input terminals can be wired to the outdoor temperature
sensor. To support these alternate wiring options the Outdoor ° From setting must
be set to Sec. Loop or DHW to correspond with the wiring.
Water ° From - The Default setting is Outlet. When set to Outlet the controller
will determine the supply water temperature from the outlet temperature sensor
on the boiler. Alternatively the 2nd Loop Sensor or the DHW Sensor input
terminals can be wired to a water temperature sensor. To support these alternate
wiring options the Water ° From setting must be set to Sec. Loop on DHW to
correspond with the wiring.
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