Carrier 30GB060 - Manual (Page 2)

Table of contents
Page
Features .............................................................................1
Field-Installed Accessories ...............................................1
Factory-Installed Option (FIOP)......................................1
Model Number Nomenclature ..........................................2
Physical Data....................................................................2
Application Data ............................................................2-6
Selection Procedure ..........................................................6
Performance Data ........................................................... 7-9
Page
Dimensions .................................................................... 10
Mounting Weights ......................................................... 10
Electrical Data ............................................................... 11
Controls ....................................................................... 11,12
Control Sequence .......................................................... 13
Typical Installation ........................................................ 14
Guide Specifications.................................................... 15,16
Model number nomenclature
30GB 060 - 6
30GB-AIR-COOLED
OUTDOOR LIQUID CHILLER
UNIT SIZE (approximates chiller capacity in tons)
— 1 575-3-60
— 5 208/230-3-60
— 6 460-3-60
Physical data Application data
MODEL 30GB 060
APPROX OPER WT - lb 4900
REFRIG CHG — lb
Circuit 1 65
Circuit 2 85
COMPRESSORS, Type...Rpm Reciprocating,
Semi-Hermetic 1750
(No.) Circuit 1* (1) 6275
(No.) Circuit 2 (1) A299
Capacity Control Steps 4
Circuit 1 (%) 43
Circuit 2 (%) 57
Minimum Step Capacity (%) 29
CONDENSER FANS — Type Propeller, Direct Drive
Fan Speed — Rpm 1080
No. Biades...Diameter-in.
Circuit 1/Circuit 2 4...26/3 ..30
No. Fans...Total kW 6 . 1 92
Totai Airfiow — Cfm 46500
CONDENSER COiLS — Type Plate Fins (Aluminumf)
Tubes (Copper), OD-in. '/2
Fins/in. Circuit 1/Circuit 2 14 2/15.0
No. Rows Circuit 1/Circuit 2 %
Face Area (sq ft) Circuit 1 57 5
Circuit 2 57.5
Max. Working Pressure
Refrig psig
450
COOLER — No. ...Type One...Direct Expansion,
Shell & Tube
Modei 10HA400— 824
No. Refrigerant Circuits 2
Net Water Volume — Gal.
(includes nozzles)
17 7
Max. Working Press. — psig Refrigerant Side-235,
Water Side-150
WATER CONNECTIONS MPT
Inlet and Outlet — in. 3
Drain — in. FPT %
*6 prefix indicates one electric unioader.
"A” prefix indicates no unloader.
tCopper fins aiso avaiiabie
Leveling unit
Unit must be level when installed to ensure proper oil
return to the compressors.
While most outdoor locations are suitable for 30GB
units, the roof is a common site that presents a problem
if roof has been pitched to aid in water removal. To
assure proper oil return, be sure that unit is level,
particularly in its major lengthwise dimension, as com­
pressor oil return piping runs in that direction.
It should be determined prior to installation if any
special treatment is required to assure a level installation.
Cooler temperature
1. Maximum leaving chilled water temperature (LCWT)
for Model 30GB is 70 F (21 C). Unit can start and pull
down with up to 95 F (35 C) entering water tempera­
ture due to MOP (maximum operating pressure)
feature of the expansion valve. For sustained opera­
tion, it is recommended that entering water temperature
not exceed 85 F (29.4 C).
2. Minimum LCWT for standard Model 30GB is 40 F
(4.5 C). It is permissible to use a standard micro­
processor-controlled Flotronic chiller with leaving
water temperatures in the range of 34 F (1°C) to 39.9 F
(4.4 C) only if a protective brine solution (20% antifreeze
solution, or greater) is used and microprocessor dip
switch is properly set. (See Controls and Trouble­
shooting book for further information.) Special order
medium temperature brine units must be ordered for
operation with leaving water temperatures in the range
of 34 F (1°C) to 15 F (-9C). For ratings below 40 F
4.5 C) LCWT, contact your local Carrier representative.