Daikin EWAP460MBYN [211/452] Thermostat control

ESIE05-07 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–15

2.4 Thermostat Control

Introduction The thermostat control is used to generate a load -up or load-down according to the active thermostat,

if the load-up respectively load-down timer is finished (this means gone to "0").

The thermostat can be set to regulate on different signals:

P Signal from the water sensor at the inlet of the evaporator.

P Signal from the water sensor at the outlet of the evaporator.

P Signal from the water sensor at the inlet of the condenser.

There are several possible functions for the thermostat control:

P Cooling: inlet evaporator control.

P Cooling: outlet evaporator control.

P Heating: inlet condenser control.

P Double thermostat: inlet condenser and inlet evaporator control.

P External analog signal. ( 0 - 1V, 0 - 10V, 4 -20 mA ,0 - 20 mA ).

P Floated setpoint.

P Thermostat: This function is only available on ER units by use of air sensor

(No exterminal capacity control possible).

Overview of the

possibilities

Air-cooled

cooling only

Evaporator-less Water-cooled Condenser-less

EWAP EWTP ERAP EWWD EWLD

CO HR CA HP RC

Cooling mode Inlet water step X X X X

Outlet water step X X X X

Floated Setpoint X X X

Thermostat X

External analog

signal

XX X X

Heating mode Inlet water step X X

External analog

signal

Double thermo-

stat mode

Inlet water step X

External analog

signal

Manual control X X X X X

ESIE05-07.book Page 15 Wednesday, October 11, 2006 10:42 AM