Pump Packages (Optional Extras) - AIREDALE LogiCool LCC20 Technical Manual

LOGICOOL™
Installation Data
PUMPS
Pump Statement

PUMP PACKAGES (OPTIONAL EXTRAS)

Flow Schemes:
A Standard Unit - No Pump
B Single Head Pump
C Run/Standby Pump
A
B
C
4
5
1 Filter Ball Valve
2 Pump
3 Non Return Valve
4 Water Supply & Return
5 Drain
6 Ball Valve
7 Plate Evaporator
Interlocks & Protection
CAUTION
CAUTION
Chillers
34
Technical Manual : 6521355 V1.14.0 11/2016
When installing circulating water pumps or equipment containing them, the following rules
should be applied:

Ensure the system is filled with liquid then vented and the pump primed with water
before running the pump, this is required because the pumped liquid cools the pump
bearings and mechanical seal faces

To avoid cavitation the NPSH (Net Positive Suction Head) incorporating a safety
margin of 0.5m head must be available at the pump inlet during operation
1
2
3
Always electrically interlock the operation of the chiller with the pump controls for
safety reasons.
Failure to will invalidate the chiller warranty.
Do not rely solely on the BMS to protect the chiller against low flow conditions.
An evaporator pump interlock MUST be directly wired to the chiller, to
Interconnecting Wiring, on page 35.
12
11
6
8 Differential Pressure Transducer
9 Auto Air Vent
10 Mixing Valve
11 DRV (Flushing Bypass)
12 Binder Points
13 Free Cooling Coil
Chillers
13
8
PT
7
10
9