Airedale Ultima FreeCool UFC 575 [19/46] Ultima freecool chillers

ULTIMA FREECOOL Chillers

Chillers

Installation & Maintenance Manual : 903-125 IM E 05/04/A

Installation Data

ELECTRICAL DATA

General

• As standard the equipment is designed for 400V, 3 phase, 3 wire 50Hz and a

separate permanent 230V, 1 phase, 50Hz supply, to all relevant IEE regulations,

British standards and IEC requirements.

• Ensure correct phase rotation.

CAUTION

• A fused and isolated electrical supply of the appropriate phase, frequency and

voltage should be installed.

• The control voltage to the interlocks is 24V. Always size the low voltage interlock

and protection cabling for a maximum voltage drop of 2V.

CAUTION

• Wires should be capable of carrying the maximum load current under non-

fault conditions at the stipulated voltage.

• Avoid large voltage drops on cable runs, particularly low voltage wiring.

• Once the connecting pipework is complete the electrical supply can be connected

by routing the cable through the appropriate casing hole and connecting the

cables, refer to the Wiring Diagram supplied with each unit.

CAUTION

A separately fused, locally isolated, permanent single phase and neutral supply

MUST BE FITTED

for the compressor sump heater, evaporator trace heating and

control circuits, FAILURE to do so could INVALIDATE WARRANTY

CAUTION

The Emergency Stop MUST NOT be used to stop the chiller other than in the event

of an emergency.

Interlocks & Protection

Always electrically interlock the operation of the chiller with the pump controls for safety

reasons. Failure to do this will invalidate the chiller warranty.

Do not rely solely on the BMS to protect the chiller against low flow conditions.

CAUTION

An evaporator pump interlock MUST be directly wired to the chiller, refer to

Interconnecting Wiring diagram.