Specifications
5
Winter Start — All 30GTN,GTR,GUN,GUR chillers have
winter start features included in their microprocessor control
logic. All 38AH and 38AKS units have winter start features
included in their standard controls. The 09DK air-cooled
condenser sections do not need to be directly modified, howev-
er, the total system may require winter start control. Refer to
indoor base unit installation instructions. No additional provi-
sions are necessary.
INSTALLATION
Step 1 — Install Field-Fabricated Wind Baffles
and Brackets
Wind baffles and brackets must be field fabricated for all
units (except 38AH024-034, 38AKS028-044 and 09DK020-
044) to ensure proper cooling cycle operation at low-ambient
temperatures with Motormaster® V controls. See Fig. 2-10 for
the number and sizes of brackets and baffles required and for
bracket and baffle details. Use 20-gage (1 mm) galvanized
sheet metal, or similar corrosion-resistant material for the baf-
fles. Use 14-gage (1.85 mm) galvanized sheet metal or similar
corrosion-resistant material for the brackets. Use field-supplied
screws to attach baffles and brackets to unit. Screws should be
1
/
4
-in. (6.3 mm) diameter or larger. Drill required screw holes
for mounting baffles and brackets.
To avoid the possibility of electrical shock, open all discon-
nects before installing or servicing this accessory.
To avoid damage to refrigerant coils and electrical compo-
nents, use extreme care when drilling screw holes and
screwing in fasteners.
NOTES:
1. Unit 09DK condensers are not pro-
vided with compressors.
2. See Fig. 3-6 for baffle construction.
BAFFLE
BAFFLE SIZE
in. mm
A 26 x 41
11
/
16
660 x 1059
B 47 x 41
7
/
8
1194 x 1064
C 32 x 41
11
/
16
813 x 1059
D 61 x 41
7
/
8
1549 x 1064
E 42 x 41
7
/
8
1067 x 1064
F 85 x 33
11
/
16
2159 x 856
09DK054,064/30GTN,GTR,GUN,GUR040-050/
38AH044-064 AND MODULES 124A/B, 134A
09DK074,084/
30GTN,GTR,GUN,GUR060,070/
38AH074,084 AND MODULE 134B
09DK094/
30GTN,GTR,GUN,GUR080,090
AND MODULES 230B, 245B/ 38AH094, 104
30GTN,GTR,GUN,GUR100,110 AND
MODULES 255B-315B
Fig. 2 — Baffle Configuration for 09DK/30GTN,GTR,GUN,GUR040-110 and Associated Modular Units
(See Table 1)/38AH044-134 Low-Ambient Operation
Summary of Baffles and Brackets
*See Fig. 7 for bracket construction.
UNIT
BAFFLE TYPE AND QUANTITY BRACKETS*
ABCDEFQty
Length
in. mm
09DK054,064 ————— 2 636
3
/
8
924
09DK074,084 2 ——— 4 — 844
3
/
8
1127
09DK094 2 4 ———— 844
3
/
8
1127
30GTN,GTR,GUN,GUR040-050 ————— 2 636
3
/
8
924
30GTN,GTR,GUN,GUR060,070 2 ——— 4 — 844
3
/
8
1127
30GTN,GTR,GUN,GUR080,090; Modules 230B, 245B 2 4 ———— 844
3
/
8
1127
30GTN,GTR,GUN,GUR100,110; Modules 255B-315B —— 2 4 —— 844
3
/
8
1127
38AH094,104 2 4 ———— 844
3
/
8
1127
38AH044-064; Modules 124A, 124B, 134A ————— 2 636
3
/
8
924
38AH074,084; Module 134B 2 ——— 4 — 844
3
/
8
1127