Installation - Trane Flex II Series Installation Operation & Maintenance

60
55
50
45
40
35
30
25
20
15
10
-10 -8 -6
ETHYLENE GLYCOL CORRECTION TABLE
% Ethylene glycol weight
Freezing temperature
Suggested security limit Cooling
capacity coefficient
Power input coefficient
Flow rate coefficient
Pressure drop coefficient
In order to calculate performance with glycoled solutions multiply main sizes by respective coefficients.
GLYCOL PERCENTAGE DEPENDING ON FREEZING TEMPERATURE
Freezing temperature
% Ethylene glycol
Flow rate coefficient
In order to calculate performance with glycoled solutions multiply main sizes by respective coefficients.
IMPORTANT: Oversized water pump as on board unit pump is required for operation with glycol > 25%. If any doubt please contact
your local sales office.
4

INSTALLATION

4.1 MOVING AND POSITIONING THE UNIT
The units have been designed to be lifted from above by means of eyebolts and holes in the base members.
Use retractor bars to keep the lifting wires or chains away from the unit.
Lifting procedures provided with the unit have to be respected.
With heat recovery heat exchanger
-4 -2 0 2
Leaving chilled water temperature °C
5%
°C -2
°C 3
- 0,995
- 0,997
- 1,003
- 1,029
% glycol according to the freezing temperature
0°C
5%
1,02
4 6 8 10
10% 15% 20% 25%
-3,9 -6,5 -8,9 -11,8
1 -1 -4
0,99 0,985 0,981 0,977
0,993 0,99 0,988 0,986
1,01 1,02 1,033
1,06 1,09 1,118 1,149
-5°C -10°C
12% 20%
1,033 1,05
12 14 16
30% 35%
-15,6 -19
-6 -10 -14
0,974 0,971
0,984 0,982
1,05 1,072 1,095
1,182 1,211
-15°C -20°C -25°C
28% 35% 40%
1,072 1,095 1,124
18 20
40%
-23,4
-19
0,968
0,981
1,124
1,243
8