Specifications

TY Series 60Hz - HFC-410A Submittal Data Eng/I-P
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Page ______ of ______Revised: 30 January, 2015LC992 - 8
For operation in the shaded area when water is used in lieu of
an antifreeze solution, the LWT (Leaving Water Temperature)
must be calculated. Flow must be maintained to a level such
that the LWT is maintained above 40°F [4.4°C] when the
JW3 jumper is not clipped (see example below). Otherwise,
appropriate levels of a proper antifreeze solution should be
used in systems with leaving water temperatures of 40ºF [4.4°C]
or below and the JW3 jumper should be clipped. This is due
to the potential of the refrigerant temperature being as low as
32°F [0°C] with 40°F [4.4°C] LWT, which may lead to a nuisance
cutout due to the activation of the Low Temperature Protection.
JW3 should never be clipped for standard range equipment or
systems without antifreeze.
Example:
At 50°F EWT (Entering Water Temperature) and 1.5 GPM/ton, a
3 ton unit has a HE of 22,500 Btuh. To calculate LWT, rearrange
the formula for HE as follows:
HE = TD x GPM x 500, where HE = Heat of Extraction (Btuh);
TD = temperature difference (EWT - LWT) and GPM = U.S.
Gallons per Minute.
TD = HE / (GPM x 500)
TD = 22,500 / (4.5 x 500)
TD = 10°F
LWT = EWT - TD
LWT = 50 - 10 = 40°F
In this example, as long as the EWT does not fall below 50°F, the system will operate as designed. For EWTs below 50°F, higher
fl ow rates will be required (open loop systems, for example, require at least 2 GPM/ton when EWT is below 50°F).
Performance Data – Selection Notes
0 710 11.6 1.05 8.2 85.1 3.25
0 825 11.7 1.02 8.4 83.2 3.38
38.3 710 13.6 1.09 10.1 87.8 3.66
4 38.3 825 13.8 1.06 10.3 85.5 3.81
3 39.2 710 14.2 1.09 10.7 88.5 3.81
7 39.2 825 14.4 1.06 10.9 86.1 3.97
4 39.8 710 14.4 1.09 10.9 88.8 3.86
7 39.8 825 14.6 1.06 11.1 86.3 4.02
35.3 710 16.1 1.15 12.3 90.9 4.08
5 35.3 825 16.2 1.12 12.6 88.2 4.25
2 37.9 710 16.7 1.15 13.0 91.8 4.25
5 37.9 825 16.9 1.12 13.3 89.0 4.42
2 38.3 710 16.9 1.16 13.2 92.1 4.30
6 38.3 825 17.1 1.12 13.5 89.2 4.47
2 30.7 710 18.3 1.18 14.5 93.9 4.56
6 30.7 825 18.5 1.14 14.8 90.8 4.75
3 33.4 710 19.1 1.18 15.2 94.8 4.73
6 33.4 825 19.3 1.15 15.5 91.6 4.93
3 34.1 710 19.3 1.18 15.4 95.1 4.78
6 34.1 825 19.5 1.15 15.7 91.9 4.98
8 25.9 710 20.4 1.21 16.5 96.6 4.93
25.9 825 20.6 1.18 16.8 93.2 5.13
28.6 710 21.2 1.22 17.3 97.7 5.10
4 28 6 825 21 5 1 18 17 6 94 1 5 31
Heating - EAT 70°F
R EER
Airfl ow
CFM
HC kW HE LAT COP