18
OPERATING LIMITS
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
18
39
5
-15
42
5
With fans modulating control options and glicole water*
With fans modulating control options
WATER OUTLET
TEMPERATURE
WATER OUTLET
TEMPERATURE
EXTERNAL AIR
TEMPERATURE
EXTERNAL AIR
TEMPERATURE
IN COOLING MODE
IN COOLING MODE
IN HEATING MODE
IN HEATING MODE
BRINE UNIT BR - BP
GLICOLE WATER OUTLET
TEMPERATURE
EXTERNAL AIR
TEMPERATURE
WATER OUTLET
TEMPERATURE
EXTERNAL AIR
TEMPERATURE
STANDARD UNIT IR-IP
With fans modulating control options
With fans modulating control options
With fans modulating control options
With fans modulating control options, glicole water*
and "pressure transducer" accessory.
With fans modulating control options and "pressure transdu-
cer" accessory.
*: Or other antifreeze solutions
For these applications requires the use of brine or other antifreeze solutions .
The table below lists the operating limits within which correct operation of the units is guaranteed, depending on the Version and
Operating Mode available for each type of unit.
Remember that in Heat Pump units, heat recovery only takes place during operation in the cooling mode.
Thermal gradient of the water
Limit value
Minimum
°C
3
Maximum
°C
8
Verify that water flow rate is inside the admissible limits.
NOTE: the admissible limits for water flow rate on heat exchangers are indicated under the related pressure drop graph (see
section "water pressure drop") . If the unit is equipped with pumping module the admissible limits are indicated under the
related working head graph (see section "working head") .
50
50
5
-15
42
5
18
39
50
50
5
-15
42
5
18
39