Heating Stages; Cascade Heating - Airstream INTER 2V4SA User Manual

INTER 2V4SA
10. Heating Stages
Set internal switches as follows to enable
the proper number of heating stages (1 or
2 heating stages):
Position of
the internal is used for:
switches
6 ON / 7 OFF
6 ON / 7 ON
Heating
Stage
Status
Stage 2 ON
Stage 2 OFF
Stage 1 ON
Stage 1 OFF
28
INTER 2V4SA, rev.02
Stage 5 Stage 6
is used for:
Cooling Heating
Heating Heating
Heater 2
Differential
10.1. Cascade Heating
When cascade heating is used, the operation
of heating stages is based on the average
room temperature (set internal switch #8 in
"OFF" position to enable cascade heaters).
If the room temperature rises:
• at Set Point - Heater 1 Offset - Heater 1
Differential: Heater 2 turns off.
• at Set Point - Heater 1 Offset: Heater 1
turns off.
If the room temperature falls:
• at Set Point - Heater 1 Offset - Heater 1
Differential: Heater 1 turns on.
• at Set Point - Heater 1 Offset - Heater 1
Differential - Heater 2 Differential: Heater 2
turns on.
Cascade Heating
Heater 1 Heater 1
Differential Offset
Room T°
Set Point