SunMaxx Solar | 5098 NY 206 Bainbridge NY 13733 | 1.877.786.6299 1.877.270.7875 fax | www.sunmaxxsolar.com
RELA
Y FUNC
TIONS
6.4.9 Difference
The relay is switched on when a specific temperature difference (Δ T) is reached.
Settings range: On, Off
6.4.9.1 ∆ T Difference
Switch on - difference:
When this temperature difference is reached, the relay is switched on.
Settings range: 5°C to 20°C (41°F to 68°F) / Default setting: 8°C (46°F)
Switch off - difference:
When this temperature difference is reached, the relay is switched off.
Settings range: 2°C to 19°C (35°F to 66°F) / Default setting: 4°C (39°F) (the upper limit is the switch on - difference)
6.4.9.2 DF Source (Sensor)
Heat source sensor for Difference function
This determines the sensor for the heat source.
Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none
6.4.9.3 Diff Tmin
Minimum temperature at source sensor to enable the difference relay
When the temperature at the source sensor is below this level, the difference function is disabled.
Settings range: 0°C to 90°C (32°F to 194°F) / Default setting: 20°C (68°F)
6.4.9.4 DF Drain (Sensor)
Drain sensor / Target sensor for difference function
This determines the sensor for the target storage.
Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none
6.4.9.5 DF Tmax
Maximum temperature at target sensor to enable difference function
If the temperature at the target sensor exceeds this value, difference function is disabled.
Settings range: 0°C to 99°C (32°F to 210°F) / Default setting: 60°C (140°F)
