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41
R e s i d e n t i a l D i g i t a l P a c k a g e d U n i t s G T- P B S e r i e s - 6 0 H z P u ro n
®
R e v : 4 A p r i l , 1 4
Unit Start-Up Procedure
WARNING!
WARNING!
When the disconnect switch is closed, high
voltage is present in some areas of the electrical panel.
Exercise caution when working with energized equipment.
Unit Operating Conditions
If performance during any mode appears abnormal, refer to
the DXM2 section or troubleshooting section of this manual.
NOTE
:
To obtain maximum performance, the air coil should
be cleaned before start-up. A 10% solution of dishwasher
detergent and water is recommended.
Table 13: Water Temperature Change Through
Heat Exchanger
9 - 12
20 - 26
4 - 8
10 - 17
Model
GPM
Pressure Drop (psi)
30°F*
50°F
70°F
90°F
024
Rev B
2.5
3.0
3.8
4.5
6.0
0.8
1.2
1.8
2.7
3.9
0.3
0.6
1.1
1.6
2.8
0.2
0.5
0.9
1.2
2.2
0.2
0.5
0.8
1.2
2.0
030
3.0
3.8
4.5
6.0
7.5
1.7
2.3
2.7
3.8
5.1
0.9
1.2
1.6
2.4
3.5
0.8
1.1
1.4
2.2
3.1
0.8
1.1
1.4
2.1
2.9
036
Rev B
4.0
6.0
6.8
8.0
9.0
0.6
1.8
2.3
3.2
4.0
0.1
1.0
1.5
2.2
2.9
0.1
0.7
1.1
1.8
2.4
0.1
0.7
1.1
1.7
2.3
042
3.8
5.3
7.5
7.9
10.5
1.7
2.7
4.5
4.8
7.4
1.0
1.8
3.1
3.4
5.4
0.9
1.6
2.8
3.1
4.9
0.9
1.5
2.6
2.9
4.7
048
4.5
6.0
6.8
9.0
12.0
1.4
2.0
2.5
4.0
6.5
1.1
1.7
2.1
3.4
5.5
0.9
1.4
1.8
3.0
4.9
0.8
1.3
1.7
2.7
4.5
060
Rev B
6.0
7.5
9.0
12.0
15.0
1.2
2.1
3.1
5.4
8.1
0.9
1.7
2.5
4.6
7.0
0.8
1.5
2.3
4.2
6.4
0.8
1.4
2.2
3.9
6.1
* Based on 15% methanol antifreeze solution
Table 12: Coax Water Pressure Drop
Antifreeze Type
Antifreeze
%
Cooling
Heating
WPD
Corr. Fct.
EWT 30°F
EWT 90°F
EWT 30°F
Total Cap
Sens Cap
Power
Htg Cap
Power
Water
0
1.000
1.000
1.000
1.000
1.000
1.000
Propylene Glycol
5
0.995
0.995
1.003
0.989
0.997
1.070
15
0.986
0.986
1.009
0.968
0.990
1.210
25
0.978
0.978
1.014
0.947
0.983
1.360
Methanol
5
0.997
0.997
1.002
0.989
0.997
1.070
15
0.990
0.990
1.007
0.968
0.990
1.160
25
0.982
0.982
1.012
0.949
0.984
1.220
Ethanol
5
0.998
0.998
1.002
0.981
0.994
1.140
15
0.994
0.994
1.005
0.944
0.983
1.300
25
0.986
0.986
1.009
0.917
0.974
1.360
Ethylene Glycol
5
0.998
0.998
1.002
0.993
0.998
1.040
15
0.994
0.994
1.004
0.980
0.994
1.120
25
0.988
0.988
1.008
0.966
0.990
1.200
Table 14: Antifreeze Correction