S O L A R H O T W A T E R
CHanGInG ConTRolleR oPeRaTIon seTTInGs
11
4.1. SEttINGS Screens and Pro Functions
4.1.0. SYStEM Bar
4.1.0.0. System Box
There are 5 user selectable operating modes. Each activates different
operation algorithms and should be selected accordingly. Every time a
system has been changed, all settings are reset to their default values.
1.
Open Loop Residential DHW
• Presets Differentials: On at 9°F and Off at 4°F
• Enables freeze recirculation at 35°F
• Adjusts glycol Concentration to 0%
2.
Closed Loop Residential DHW
• Presets Differentials: On at 18°F and Off at 5°F
• Disables freeze recirculation
• Adjusts glycol Concentration to 50%
3.
Closed Loop Commercial
• Same as Closed Loop Residential PLUS
• Enables variable speed operation with Solar Pump on R1, Water on
R2
4.
Closed Loop Combination
• Same as Closed Loop Residential PLUS
• Enables Relay 2 operation with zone thermostat detection.
5.
Closed Loop Pool Heating
• Enables a 1 degree hysteresis on Relay 1
• Same as closed loop commercial PLUS
4.1.0.1. Settings Login Password
This changes the password to log in to the settings only, it does not
change the WiFi password. Enter the password twice, passwords must
be 20 characters or less.
4.1.0.2. 24 Hour System Clock
The time and date need to be set to stamp sensor and energy correctly
for communication with our monitoring servers. Note that setting the
time will cause the controller to restart and may be unavailable in your
browser window immediately following the update. Provided the network
settings are correct, the controller will come back on to the same IP
Address.
4.1.0.3. Modbus Protocol
This allows you to enable RTU or TCP communication through Modbus.
4. SEttINGS
4.0. Quick Start
For fast setup, here is a list of parameters that may need to be adjusted to
properly control simple DHW systems. Remember to save any adjusted
settings.
1.
Adjust the system clock to reflect the local time.
2.
If using an open loop system, change the system type to Open Loop for
enabling freeze protection.
3.
If using a grundfos VFS other than installed in an HPAK, HFLO or
HCOM, adjust the flow range to match the sensor installed.
4.
If using a gas tank as the solar storage with electric ignition, enable the
gas Tank Operation checkbox.
5.
If using a drain back system, enable the Drain Back Operation checkbox.
6.
Rename any temperature sensors as desired by clicking on them in the
home page.
FIg. 4.0.0
FIg. 4.1.0
