13
HEATING PERFORMANCE
HOT WATER COIL
Models AR/AO (Accessory)
TH 3059
X 1100/X 1900
X 1100
X 1900
Model
X 1900
Ex : Tsi
= 20 °C
Water = 90/80 °C
Twm = 85 °C
Pt
1
=29,7 kW
WATER PRESSURE LOSSES
Pt
1
= Total cooling capacity with nominal air flow
Pt
= Total cooling capacity
Tsi
= Dry indoor temperature
Qa
= Treated air flow
Qn
= Nominal air flow
Qw = Water flow
Twe = Hot water inlet temperature
Tws = Hot water outlet temperature
∆
Tw = Difference in temperature water inlet/outlet
Twm = Hot water average temperature
∆
Pw = Hot water pressure drops
WATER FLOW
Qw (m
3
/h)
Water flow
Nominal flow
K
1
CFFICIENT
AIR FLOW
Qa/Qn
K
1
0,80
0,90
1
1,1
1,2
0,87
0,95
1
1,06
1,13
K
2
COEFFICIENT
∆
Tw
∆
Tw
°K
4
6
8
10
12
14
16
18
20
K
2
1,05 1,03 1,01
1
0,98 0,96 0,95 0,94 0,92
X 1100
X 1900
Capacity
l
2
3
Nominal water flow
m
3
/h
1,3
2,6
Maxi. water pressure
kPa
1000
1000
Maxi. water inlet
temperature (Twe)
°C
90
90
Mini. dry indoor
temperature (Tsi)
°C
+ 6
+ 6
Ø Connection
mm M 26 x 34 M 26 x 34
Qw m
h
Pt kW
Tw
(
/ )
,
(
)
3
0 86
=
×
∆
X1100
X1900
Pt = K
1
x K
2
x Pt
1
