Product Overview

Data sheet | Electric expansion valves, type ETS 6
© Danfoss | DCS (rm) | 2019.08
AI227986437323en-000901 | 7
Step 1
Determine the correction factor for subcooling
Δt
sub
. From the correction factor table (see below)
a subcooling of 10 K, R407C corresponds to a
factor of 1.14.
Correction factors for subcooling Δt
sub
.
Step 2
Corrected evaporator capacity is
Q
e
(Corrected) = 10 kW /1.14 = 8.8 kW / 2.5 TR
Step 3
Select the appropriate capacity table, R407C, and
choose the column for condensing temperature
of t
c
= 40°C / 104 °F and evaporating temperature
of t
e
= 10°C / 50 °F which will provide an
equivalent or greater capacity of 8.8 kW / 2.5 TR.
ETS 6 - 18 provides 10.35 kW / 2.94 TR, which is
the proper selection for this example.
Step 4
Choose ETS 6 -18:
• Single pack code no. 034G5026
• I-pack code no. 034G5024
ΔTsc
0K 4K 10K 15K 20K 25K 30K 35K 40K 45K 50K
0°F 7.2°F 18°F 27°F 36°F 45°F 54°F 63°F 72°F 81°F 90°F
R22 1.00 1.04 1.10 1.16 1.20 1.25 1.30 1.35 1.41 1.45 1.50
R410A 1.00 1.06 1.14 1.21 1.28 1.34 1.40 1.47 1.53 1.58 1.65
R407C 1.00 1.06 1.14 1.20 1.28 1.34 1.40 1.47 1.53 1.60 1.66
R134a 1.00 1.06 1.14 1.19 1.26 1.32 1.38 1.45 1.50 1.56 1.63
R404A 1.00 1.07 1.18 1.29 1.38 1.47 1.56 1.65 1.75 1.82 1.91
Valve Selection
(continued)
Rated Capacity (kW)
Condensing
temperature
(°C)
ETS 6 -18
Evaporation temperature (°C)
10 5 0 -5 -10 -20 -30
R410A
30 10.35 11.21 11.88 12.41 12.81 13.31 13.52
35 11.15 11.84 12.38 12.79 13.10 13.47 13.58
38 11.51 12.11 12.58 12.94 13.20 13.50 13.55
40 11.70 12.25 12.67 13.00 13.23 13.48 13.50
45 12.00 12.44 12.77 13.02 13.19 13.33 13.27
50 12.07 12.41 12.66 12.84 12.95 13.00 12.86
R407C
30 8.95 9.61 10.11 10.48 10.74 11.02 11.06
35 9.75 10.26 10.65 10.92 11.11 11.27 11.22
38 10.13 10.57 10.90 11.13 11.28 11.38 11.28
40 10.35 10.75 11.04 11.24 11.36 11.42 11.30
45 10.79 11.09 11.30 11.43 11.50 11.47 11.27
50 11.06 11.28 11.42 11.49 11.50 11.39 11.13
R22
30 8.59 9.27 9.80 10.22 10.53 10.92 11.07
35 9.41 9.96 10.38 10.71 10.96 11.24 11.33