Specifications

4
Table 6 — Applicable Voltages and Motors
*Not all voltages are available for all units. See base unit installation instruc-
tions for available voltages.
APPLICATION NOTES
For the 09DK units, the information in this book is applica-
ble when either 100%, 50/50% or 67%/33% condenser coil
circuiting is used.
There are no minimum capacity step (%) tables with the
09DK condensers, because capacity steps are dependent on the
compressor-bearing unit. Refer to base unit product data litera-
ture for further details.
The 09DK020-044 units require a field-supplied, 20 x 20 x
8 NEMA 3R enclosure.
Corrosion-inhibited antifreeze solution for 30GTN,GTR,
GUN,GUR chiller use must be added to the cooler fluid loop to
protect it to temperatures 15° F (9° C) below the lowest expect-
ed outdoor temperature.
Widely varying cooling loads are often encountered during
low ambient temperature operation of the 30GTN,GTR, GUN,
GUR chiller. To minimize compressor cycling as a result of
these conditions, provide sufficient volume in the chiller fluid
loop, adding a properly baffled storage tank to the system if
necessary. At least 6 gal per ton (6.5 L per kW) of refrigeration
is recommended for a moderate system load.
Table 7A — Minimum Capacity Step (%)
30GTN,GTR,GUN,GUR — 60 Hz
*A1 compressor with standard unloader, OR
A1 compressor with standard unloader and B1 compressor with accessory
unloader.
†A1 compressor with standard unloader and accessory unloader, and B1 com-
pressor with accessory unloader, OR
A1 compressor with standard unloader and accessory unloader, and B1 com-
pressor with 2 accessory unloaders.
Table 7B — Minimum Capacity Step (%) —
30GTN,GTR,GUN,GUR — 50 Hz
*A1 compressor with standard unloader, OR
A1 compressor with standard unloader and B1 compressor with accessory
unloader.
†A1 compressor with standard unloader and accessory unloader, and B1 com-
pressor with accessory unloader, OR
A1 compressor with standard unloader and accessory unloader, and B1 com-
pressor with 2 accessory unloaders.
Table 7C — Minimum Capacity Step (%) —
38AH — 50/60 Hz
LEGEND
Table 7D — Minimum Capacity Step (%) —
38AKS — 50/60 Hz
UNIT NAMEPLATE VOLTAGE* COMPATIBLE MOTORS
208-230/3/60 HD52AK654, HD52AK002
380-3-60 HD52GE381, HD52GE382
460-3-60, 380/415-3-50 HD52AK654, HD52AK002
380/415-3-50 (Low noise fans) HD56AK653
575-3-60 HD52GE576, HD52GE577
Operation at low ambient temperature is not recommended
if the minimum load on the 30GTN,GTR,GUN,GUR
chiller or the 38AH condensing unit is below its minimum
step of capacity. Unstable operation may result. See
Table 7A, 7B, 7C, or 7D.
UNIT/SIZE
30GTN,GTR,GUN,GUR
STANDARD
UNIT
STANDARDUNIT WITH
ACCESSORYUNLOADER(S)
040 25* —
045 24* 21†
050 31* 20†
060 28* 18†
070 33* 16†
080; Module 230B 22 11
090; Module 245B 18 9
100; Modules 255B, 270B 16 8
110; Modules 290B, 315B 14 7
130 14 8
150; Modules 230A,
245A, 255A
11 6
170; Modules 270A,
330A/B
11 6
190; Modules 290A,
360A/B, 390B
13 9
210; Modules 315A,
390A, 420A/B
11 8
UNIT/SIZE
30GTN,GTR,GUN,GUR
STANDARD
UNIT
STANDARD
UNIT WITH
ACCESSORY
UNLOADER(S)
040 24* 21†
045 31* 18†
050 28* 15†
060 33* 16†
070 19* 11†
080; Module 230B 22 8
090; Module 245B 14 7
100; Modules 255B,
270B
13 7
110; Modules 290B,
315B
17 8
130 10 6
150; Modules 230A,
245A, 255A
13 6
170; Modules 270A,
330A/B, 360B
95
190; Modules 290A,
360A, 390B
17 11
210; Modules 315A
390A, 420A/B
97
UNIT
38AH
STANDARD
UNIT
OPTIONAL VAV UNIT WITH
ELECTRIC UNLOADERS OR
STANDARD UNIT WITH
ACCESSORY UNLOADER(S)
ON LEAD COMPRESSOR
024 33 17
028 33 17
034 28 14
044 25 —
054 21 22
064 32 16
074 29 14
084 33 17
094 22 22
104 18 17
Modules
124A, 124B,
134A
32 9
Module 134B 29 8
VAV — Variable Air Volume
UNIT
38AKS
STANDARD
UNIT
028 33
034 33
044 33