Daikin EKHTS-AC - Инструкция по эксплуатации - Страница 10

Installation manual

8

EKHTS260AC6W1

Domestic hot water tank for air to water heat pump system

4PW73828-1 – 2012.05

Draining

Follow the next steps to drain the tank:

1

Switch off the power supply.

2

Turn off the cold water supply valve.

3

Open the hot water taps.

4

Open the drain valve.

T

ROUBLESHOOTING

This section provides useful information for diagnosing and
correcting certain troubles which may occur in the unit.

General guidelines

Before starting the trouble shooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.

When a safety device was activated, stop the unit and find out why
the safety device was activated before resetting it. Under no circum-
stances safety devices may be bridged or changed to a value other
than the factory setting. If the cause of the problem cannot be found,
call your local dealer.

General symptoms

Symptom 1: No water flow from hot taps

Symptom 2: Water from hot taps is cold

Symptom 3: Intermittent water discharge

Symptom 4: Dirty water

Symptom 5: electric heater is not operating

D

ISPOSAL

REQUIREMENTS

Dismantling of the unit and treatment of parts must be done in
accordance with relevant local and national legislation.

T

ECHNICAL

SPECIFICATIONS

Domestic hot water tank specifications

When carrying out an inspection on the supply panel or on
the switch box of the unit, always make sure that the circuit
breaker of the unit is switched off.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTION

The main water supply is off.

Check that all shut off valves of the 
water circuit are completely open.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTION

The thermal cut-out located in the 
indoor unit has operated

• Check and find the cause of tripping 

and then reset button.

• Check if thermistor is correctly 

installed in thermistor socket.

Procedure: remove front panel and 
insulation, replace or fix the sensor.

The indoor unit is not operating.

Check the indoor unit operation. 
Refer to the manual delivered with 
the unit.
If any faults are suspected, contact 
your local dealer.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTION

Thermal control failure (water will be 
hot).

Contact your local dealer.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTION

Dirty water

Flush or clean the domestic hot 
water tank after periods of standstill. 
It could occur that particles in the 
water deposit on the bottom of the 
tank. If this deposit layer becomes 
thick enough it could enter the hot 
water outlet and contaminate the hot 
water.

The water has a smell of rotten eggs.

Check if this phenomena also occurs 
with the cold water. If it does, this 
indicates that there is a problem with 
the water supply or with the water in 
the piping, but not with the domestic 
hot water tank itself.
Contact your water supplier.
If the problem is not solved, increase 
the domestic hot water tank 
temperature above 65°C. 
If this action solves the problem, the 
smell is most probably caused by 
bacterial contamination. Contact 
your water supplier.
If the problem is not solved, contact 
your local dealer.

P

OSSIBLE

CAUSES

C

ORRECTIVE

ACTION

The thermal cut out operated.

Open the cover of the electric heater 
and reset the thermal cut out by 
pressing the button.

The thermal fuses are blown.

Replace the electric heater.

Storage capacity

(l)

260

Internal heat exchanger volume

(l)

7.5

Material

Stainless steel

Overall dimensions (h x l x w)

(mm)

1610 x 600 x 695

Maximum primary working 
pressure (heating side)

(bar)

3

Connections

Quick coupling G 3/4" F

Type of inspection hole

G 1/2" Electric heater element 

connection

Weight

- empty

(kg)

78

- when full

(kg)

330

Mounting

On top of unit or floor mounted

Maximum water supply pressure

(bar)

10

Maximum temperature domestic 
hot water

(°C)

75

Maximum temperature heat 
exchanger

(°C)

85

4PW73828-1.book  Page 8  Friday, May 25, 2012  2:27 PM