Unit Piping
CG-SVX038A-EN
21
disc and seat type water regulating valves caused by
excessive pressure drops through the valve.
Under full load AHRI standard conditions, and with
approximately 3 gpm/ton cooling water flow through the
condenser, the temperature rise across the condenser will
be approximately 10°F. In all cases, the minimum inlet
condenser water temperature is 65°F.
Figure 3.
Chilled water piping schematic
FT
Pi
B
T5
T4
A
CUSTOMER PIPING
UNIT
3
2
6
1
2
6
7
4
8
5
3
T1
T3
T2
5
Table 8.
Reference numbers
Item Description
1
Bypass Valve
2
Isolation Valves
3
Vibration Eliminators
4
Evaporator Heat Exchangers
5
Inlet and Outlet Chilled Water Lines
6
Valves for Pressure Measurement
7
(a)
(a) Strainer with 20 mesh screen is required.
Strainer with 20 mesh screen
8
Evaporator Manual Air Vent Valve w/Plug
A
Isolator Unit for initial water loop cleaning
B
(b)
(b) Must account for water head difference when calculating total unit pres-
sure differential.
Arrangement for Measuring Differential Pressure
FT
(c)
Water Flow Switch
Pi
Pressure Gauge
T1
Evaporator outlet temperature sensor
T2
Evaporator inlet temperature sensor
T3
Evaporator core temperature sensor
T4
Chiller inlet temperature gauge
T5
Chiller outlet temperature gauge
(c) Chilled water flow-proving device is required.
Summary of Contents for Cold Generator
Page 67: ......