DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS
HeatNet Control V3 3.x
Page 119
LOCAL
ENABLED
YES
YES, NO
A local flow sensor is installed to detect and prove local flow in
GPMs on each boiler.
GLYCOL MIX
50%
0%-50%
Any mix over 10% de-rates the flow by 30% (rule of thumb
method). Example: if the LOWEST FLOW = 50 GPM, HeatNet will
calculate a New Lowest Flow required to be 65 GPM. The
LOWEST FLOW does not need to be changed but is calculated to
65 GPM and that value is used by HeatNet.
FLOW PROVE
GPMs PER
BOILER TYPE
ADJUSTABLE PER
BOILER TYPE
The flow prove value is adjustable, and each boiler type has its own
individual minimum flow prove and range.
SYSTEM
CHANNEL 2
ENABLED
NO
YES, NO
If a flow meter or flow control is to be used, set to YES
GLYCOL MIX
0%
0-100%
Any mix over 10% de-rates the flow by 30% (rule of thumb
method). Example: if the LOWEST FLOW = 50 GPM, HeatNet will
calculate a New Lowest Flow required to be 65 GPM. The
LOWEST FLOW does not need to be changed but is calculated to
65 GPM and that value is used by HeatNet.
INPUT TYPE
VOLTS CH2
CH2 (V), CH2 (mA),
BMS,
This setting determines where the flow values are originating. If set
to Volts (2), then a Flow meter is providing a 0-10V signal on J10B
4-20mA (2). Ensure that S6 switch 2 is UP for 0-10VDC.
If the setting is mA (2), then a Flow meter is providing a 4-2omA
signal on J10B 4-20mA (2). Ensure that S6 switch 2 is DOWN for
4-20mA.
If the INPUT TYPE is set to BMS, a Flow Limited or a Boilers
Limited method can be used. With Flow limited a GPM value can
be written to the BMS GPM
MODBUS
register 40019 with a valid
flow. If the Boilers Limited method is to be used, the number of
boilers that the BMS would allow HeatNet to control is written into
MODBUS
register 40020.
See the Flow Options section for more details.
LOWEST FLOW
By Boiler Type
0-500 GPM
This is the automatic value loaded and will equal the lowest flow
required for this boiler (it is adjustable). It should be equal to the
lowest flow of the largest boiler in the system.
HIGHEST FLOW
0
Currently not used.
FULL SCALE
per Flow Meter
0-1600 GPM
Enter the value of the full-scale reading on the calibration card that
came with the flow meter.
FLOW FACTOR
PPG
Currently not used.
CONFIGURE INTERLKS
The 24 VAC interlocks can be enabled or disabled for reporting.