Accorroni RPE 019, Technical Manual

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RG66004288-09
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9.2 OPERATING LIMITS IN HEAT PUMP MODE
» Operating limits in heat pump mode
RH Relative humidity of outdoor air
Tbs1
Outdoor temperature (dry bulb)
Tw2
Outlet water temperature
Operating range calculated with temperature difference of 5°C on the water side.
EEV+CC
F08=10
F09=2
F03=20
EEV
GAIN 5
int time 100
55
50
45
40
35
30
25
20
-15 -10 -5 0 5 10 15 20 25 30 35 40
Ta (°C)
Tw
2
Extended operating envelope in heat pump mode
heat pump operation within the right area of the extended operating envelope (beyond standard limits) can be allowed only for
units equipped with condensation control (or EC fans) and electronic expansion valve
Parameters F08-F093-F03 refer to standard microprocessor controller
Parameters GaIn and InT TIME are regulation parameters; they have to be modified inside the electronic expansion valve driver. Both
modifications should only made in the factory or implemented on the field, but only by Galletti S.p.a. authorized personnel.
9.3 THERMAL CARRYING FLUID
The units belonging to the MPEseries can work with mixtures of water and up to 35% ethylene glycol.