Technical data
Installation, user and maintenance manual – GAHP-A
13
GAHP-A HT GAHP-A HT S
Hot water delivery temperature
maximum for heating °C 65
maximum for ACS °C 70
Hot water return temperature
maximum heating °C 55
maximum for ACS °C 60
minimum °C 2
Hot water ow rate
nominal l/h 3000
maximum l/h 4000
minimum l/h 1000
Hot water pressure drop
nominal water pressure 
(A7W50)
bar 0,43 (2)
Ambient air temperature (dry bulb)
maximum °C 45
minimum °C -20 (7)
Thermal dierential nominal °C 10
gas consumption
methane G20 (nominal) m3/h 2,72 (3)
G30 (nominal) kg/h 2,03 (4)
G31 (nominal) kg/h 2,00 (4)
ELECTRICAL SPECIFICATIONS
Power supply
Voltage V 230
TYPE  SINGLE PHASE
Frequency
50 Hz 
supply
50
Electrical power absorption nominal kW 0,90 (5) 1,09 (5)
Degree of protection IP X5D
INSTALLATION DATA
Level of acoustic pressure at 10 meters (maximum) dB(A) 54 (8) 48 (8)
Minimum storage temperature °C -30
Maximum operating pressure bar 4
Water content inside the apparatus l 4
Water tting
TYPE F
thread " G 1 1/4
Gas tting
TYPE F
thread " G 3/4
Fume outlet
Size mm 80
Residual head Pa 80
Maximum condensation water ow rate l/h 4
Size
width mm 848 (6)
height mm 1281 (6) 1537 (6)
depth mm 1258
Weight In operation kg 390 400
GENERAL INFORMATION
INSTALLATION MODE B23P, B33, B53P
COOLING FLUID
AMMONIA R717 kg 7
WATER H2O kg 10
MAXIMUM PRESSURE OF THE COOLING CIRCUIT bar 35
Notes:
 In compliance with EN12309-2 Standard evaluated on real lower heating capacity 1. 
weakened with respect to the nominal value. For functioning conditions dierent 
to the nominal ones, refer to the PRO platform design manual.
 For ow rates dierent to the nominal refer to the PRO platform Design Manual.2. 
 PCI 34.02 MJ/m3 (1013 mbar – 15 ° C).3. 
 PCI 46.34 MJ/kg (1013 mbar – 15 ° C).4. 
 ± 10% depending on power voltage and absorption tolerance of electric motors.5. 
 Overall dimensions excluding fumes pipes (see Figure 2.1 Size (Standard ventila-6. 
tion) → 14 and Figure 2.2 Size → 15).
 It's  possible  to  have  a  special  conguration  for  operation  to  -30  °C  (as  an 7. 
optional).
 Free eld, frontal, directionality factor 2.8. 










