6 - APPLICATION DATA
6.1 - Unit operating range
Condenser
Minimum Maximum
Entering water temperature at start-up
°C
8
57
Leaving water temperature during operation °C
30
65
Entering/leaving water temperature
difference
K
3
(2)
Evaporator
Minimum Maximum
Entering air temperature, standard unit
(1)
°C
-20
40
Entering air temperature, unit with option
°C
-15
40
Note
: Do not exceed the maximum operating temperature.
(1) Outside temperature: For transport and storage of the 61AF units the minimum
and maximum allowable temperatures are -20°C and +50°C. It is recommended
that these temperatures are used for transport by container.
(2) Refer to the minimum water flow rate for each machine (see chapter 6.2).
Entering air temperature, °C
Leaving water temperature, °C
20
25
30
35
40
45
50
55
60
65
70
-25 -20 -15 -10 -5
0
5 10 15 20 25 30 35 40 45
Full load
6.2 -
Plate heat exchanger water flow
61AF
Maximum flow rate with
hydraulic module, l/s
(1)
Maximum flow rate
without hydraulic
module, l/s
(2)
22
1,8
1,8
30
2,4
2,4
35
2,8
3,1
45
3,8
3,8
55
4,6
4,6
75
5,9
6,4
105
6,1
8,5
(1) Maximum flow rate at an available pressure of 20 kPa minimum.
(2) Maximum flow rate at a water temperature difference of 3K in the plate heat
exchanger.
NOTE: For a domestic hot water application (leaving water
temperature = 65°C), the water temperature difference must
be 8 K minimum for operation at 100% capacity.
6.3 -
Minimum water flow rate
Operation below the minimum flow rate of the machine can cause
a risk of freezing and excessive fouling of the condenser.
Leaving water temperature, °C
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
25
35
45
55
65
Minimum
water
flow
rate,,
l/s
1 61AF 022
2 61AF 030
3 61AF 035
Minimum
water
flow
rate,
l/s
Leaving water temperature, °C
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
25
35
45
55
65
1 61AF 045
2 61AF 055
Minimum
water
flow
rate,
l/s
Leaving water temperature, °C
1.00
1.20
1.40
1.60
1.80
2.00
2.20
2.40
25
35
45
55
65
1 61AF 075
2 61AF 105
6.4 -
Maximum plate heat exchanger water flow
rate
This is limited by the permitted plate heat exchanger pressure
drop. Also, a minimum condenser ΔT of 3 K must be guaranteed,
which corresponds to a water flow rate of 0.09 l/s per kW.
Summary of Contents for AquaSnap 61AF 022
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