ENGLISH
4.3  HYDRAULIC WORKING RANGE
4.3.1  Hydraulic data
 
YUTAKI S
MODEL 2.0 HP 2.5 HP 3.0 HP 4.0 HP 5.0 HP 6.0 HP 8.0 HP 10.0 HP
Minimum water ow rate (*1) m
3
/h 0.5 0.6 0.6 1.0 1.1 1.2 2.0 2.2
Maximum water ow rate (*1) m
3
/h 1.9 2.0 2.1 2.9 3.0 3.0 4.5 4.6
Minimum installation water volume (*2)  l 28 28 28 38 46 55 76 79
Minimum allowable water pressure MPa 0.1
Maximum allowable water pressure MPa 0.3
 
YUTAKI S COMBI
MODEL 2.0 HP 2.5 HP 3.0 HP 4.0 HP 5.0 HP 6.0 HP
Minimum water ow rate (*1) m
3
/h 0.5 0.6 0.6 1.0 1.1 1.2
Maximum water ow rate (*1) m
3
/h 1.8 1.9 1.9 2.7 2.8 2.8
Minimum installation water volume (*2)  l 28 28 28 38 46 55
Minimum allowable water pressure MPa 0.1
Maximum allowable water pressure MPa 0.3
 
YUTAKI S80
MODEL
4.0 HP 5.0 HP 6.0 HP
Version for 
indoor unit 
alone
Version for 
combination 
with DHW 
tank
Version for 
indoor unit 
alone
Version for 
combination 
with DHW 
tank
Version for 
indoor unit 
alone
Version for 
combination 
with DHW 
tank
Minimum water ow rate (*1) m
3
/h 1.0 1.1 1.2
Maximum water ow rate (*1) m
3
/h 2.8 2.5 3.2 2.7 3.2 2.7
Minimum installation water volume (*2)  l 40 50 50
Minimum allowable water pressure MPa 0.1
Maximum allowable water pressure MPa 0.3
 
YUTAKI M
MODEL 3.0 HP 4.0 HP 5.0 HP 6.0 HP
Minimum water ow rate (*1) m
3
/h 0.6 1.0 1.1 1.2
Maximum water ow rate (*1) m
3
/h 2.1 2.8 3.0 3.0
Minimum installation water volume (*2)  l 28 38 46 55
Minimum allowable water pressure MPa 0.1
Maximum allowable water pressure MPa 0.3
? NOTE
•  (*1): Values calculated based on the following conditions: 
 - Water inlet/outlet temperature: 30/35ºC
 - Outdoor ambient temperature: (DB/WB): 7/6ºC
•  (*2): Values calculated with an ON/OFF temperature differential value of 4ºC.
WORKING RANGE
PMML0335A rev.1 - 04/2016
69