Heat Recovery - Ferroli RHV R134a Instruction Manual

HEAT RECOVERY

The recovery function heats water using heat from the condenser that otherwise would be dispersed in the environment:
- In air (air-water units)
- In water (water-water units)
When the machine is in cooling mode (compressors on), if the water in the recovery circuit is of a sufficiently low temperature
to require heat, the machine switches from normal to recovery mode.
When the water temperature reaches the recovery set point, the machine switches back to normal operating mode.
Switching from normal operation to heat recovery and vice versa, takes place:
- respecting the minimum time of operation set for the two modes
- minimize compressor power (screw compressor).
-
PARTIAL HEAT
RECOVERY
VP
TOTAL HEAT
RECOVERY
VR
SET - recovery set-point
18
MONITORING SYSTEM - User setting
AIR-WATER UNIT
ON
OFF
BANDA PROP.
PROP. BAND
SET
ON2
ON1
OFF
BANDA PROP.
PROP. BAND
SET
PROP. BAND - proportional band
Units in water-water condensation is unique
for all circuits refrigerator and heat recovery
T
T
T: Temperature measured by sensor at recovery water inlet
WATER-WATER UNIT
is always TOTAL.
ON
OFF
BANDA PROP.
PROP. BAND
SET
T