HydroTherm HeaetNet V3 KN-10, User Information

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OPTIONAL FEATURES HeatNet Control V3 2.x
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when a contact is closed across this input. This can be used as
a Domestic Hot Water demand input.
Another function of the OUTDOOR RESET is the
Winter/Summer mode ( (W)arm (W)eather (S)hutdown).
With the WWS SETPOINT set to 72F and WARM
WEATHER SD set to ON, the boiler/system will enter
summer shutdown when the Outside Air temperature rises
above 72F. While in this state, the OR OVR input on J12A
can be used to bring the boiler/system on to maintain the
water setpoint at the LOCAL or SYSTEM SETPOINT value.
During WWS operation, the System pump will not be enabled
just the Local pump unless the SETUP:SYSTEM
PUMP:OVR ENAB IN WWS is set to ON. This is the System
Pump Priority mode. When SETUP:SYSTEM PUMP:OVR
ENAB IN WWS is set to OFF, the system pump will not
come on while in WWS with the OR OVR override input
closed.
Sensors
The H-Net control supports a standard 10K thermistor (Type
ACI/10K-CP). These sensors can be calibrated to the control
by entering the sensor menu and placing a precision 10k
resistor on an input.
Immersion sensors must have wells.
There is also a provision to use a 1K platinum sensor for the
stack temperature. The 10k thermistor is limited to a usable
range of 270F, and the 1k platinum sensor to upwards of
1000F. The S5 DIP switch is used to configure one or the
other.
Stack Temperature
The version 3 control also supports an optional 1k platinum
stack sensor. If the Stack Sensor is present, a warning will
occur at 325F and greater. During the Warning condition, for
every degree F over the warning temperature of 325F, the
boiler‘s input will be limited by 4% until the boiler is running
at low fire. If the SETUP: AUX FUNCTIONS: HEAT
EXCHANGER: ALARM TYPE: is set to‖ FAULT‖ the
boiler will halt and the Alarm relay will close when the Stack
temperature exceeds 350F. The boiler will then be allowed to
restart when the Stack temperature drops below 325F.
The Stack sensor should be a 1k ohm platinum type sensor.
Part # 0040-1300. To configure the 1k PT Stack sensor,
Switch S5.3 should be set to the NONE position and S5.4 set
to PLATINUM STACK. The sensor will then be auto-
detected after a power cycle.
Security
A password can be used to lock out control and setup features.
It can be enabled, but is shipped in the disabled state.
Saving Configuration Settings
Prior to upgrading firmware or when some changes need to be
done to the settings the menu ADVANCED SETUP: LOAD
DEFAULTS: CONFIG ? can be used to save the current
settings. Once the settings have been saved they can be
restored by using the ARROW keys to change between SAVE
and Restore.
F AC T O RY CA L ? N O
F AC T O RY RE S E T ? N O
CO N FI G ? S AV E
USB Features
The HeatNet V3 control supports a USB updating system and
desktop connectivity using the HeatNet Control Pro software.
In order to ensure that a valid firmware file is always
available on the HeatNet board, (2) file storage locations are
available. A firmware file is loaded at the factory in both
locations. This is to ensure that if a bad file is loaded by the
user, the factory loaded file can be re-loaded to get the board
functional again.
The firmware loading menu is located at; ADVANCED
SETUP: SYSTEM: LOAD FIRMWARE. The following
explains the menus.
Selecting USB DRIVE will read the FIRMWARE directory
on a flash drive and display any .hex files located there. The
USB flash drive needs to have a directory called ―firmware‖
located in the root directory. The downloaded firmware .hex
file needs to be placed there. Then the flash drive needs to be
inserted intoJ6 on the HeatNet control board. Follow the on
screen prompts and then select the file using the arrow keys.
Once a file has been selected, a STORAGE LOCATION
needs to be selected. There are (2) storage locations for the
new file. Location 1 is used for normal updates and Location
0 is for the factory stored backup file. When the Storage
location (default is Location 1) is selected the file will be
loaded into a permanent storage memory location. Next, the
control will reboot and copy this new program into running
memory, reboot, load factory defaults, and then reboot again.