![Daikin EKHWSU200BA3V3 [12/16] Maintenance](/img/pdf.png)
Daikin EKHWSU200BA3V3 [12/16] Maintenance
![Daikin EKHWSU200BA3V3 [12/16] Maintenance](/views2/1788853/page12/bgc.png)
Installation manual
11
EKUHWBB + EKHWSU150~300BA3V3
Domestic hot water tank with option kit for air to water heat pump
system
4P610549-1 – 2020.01
Maintenance
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
The described checks must be executed at least once a year.
1 Domestic hot water tank booster heater
It is advisable to remove lime buildup on the booster heater to
extend its life span, especially in regions with hard water. To do
so, drain the domestic hot water tank, remove the booster heater
from the domestic hot water tank and immerse in a bucket (or
similar) with lime-removing product for 24 hours
2 Chemical disinfection
If applicable legislation requires a chemical disinfection in
specific situations,involving the domestic hot water tank, please
be aware that the domestic hot water tank is a stainless steel
cylinder containing an aluminium anode.
We therefore advise in these circumstances to use a
non-chloride based disinfectant approved for use with water
intended for human consumption.
3 Temperature and pressure relief valve
Check for correct operation of the temperature and pressure
relief valve. Manually operate the temperature and pressure
relief valve to ensure free water flow through discharge pipe.
Turn knob left.
4 Pressure reducing valve with integrated non return valve and
line strainer
Depending on local water conditions, annual inspection of the
integral line strainer, pressure reducing valve cartridge and
seating may be necessary.
Unscrew the retaining nut of the valve. The complete
operating mechanism, including the strainer can be removed.
Clean the filter mesh and cartridge under running water.
Replace cartridge, ensuring that strainer is correctly located
and reassemble the unit.
5 Expansion relief valve
Check for correct operation of the expansion relief valve.
Manually operate the expansion relief valve to ensure free water
flow through discharge pipe. Turn knob left.
Depending on local water conditions, annual inspection of the
expansion relief valve cartridge and seating may be necessary.
Unscrew the expansion relief headwork from valve body.
Clean valve seat face and seating - do not scratch or damage
either seat face or seating.
Refit in reverse order. Do not over tighten.
6 Unit switch box
Carry out a thorough visual inspection of the switch box and
look for obvious defects such as loose connections or
defective wiring.
Check for correct operation of contactor K3M by use of an
ohmmeter. All contacts of this contactor must be in open
position.
7 Inside of tank inspection
If it is necessary to inspect the inside of the cylinder, the booster
heater boss can be used.
For the anode no maintenance or replacement is required.
Troubleshooting
This section provides useful information for diagnosing and correct-
ing 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.
Before contacting your local dealer, read this chapter carefully, it will
save you time and money.
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: Continuous water discharge
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the protection
devices of the unit.
For E(K)HBH/X units only
Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.
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.
POSSIBLE CAUSES CORRECTIVE ACTION
The main water supply is off. The cold water inlet pressure reducing
valve is not fitted properly
The strainer is blocked. Turn off the water supply, remove and
clean the strainer (see "Pressure
reducing valve with integrated non return
valve and line strainer" on page 11 on
how to do this).
The cold water inlet pressure
reducing valve is not fitted
properly
Check and refit as required (see
"Pressure reducing valve with integrated
non return valve and line strainer" on
page 11 on how to do this).
POSSIBLE CAUSES CORRECTIVE ACTION
The thermal cut-out(s) has/have
operated
Check and reset button(s).
The unit is not operating. Check the unit operation. Refer to the
manual delivered with the unit.
If any faults are suspected, contact your
local dealer.
POSSIBLE CAUSES CORRECTIVE ACTION
Thermal control failure (water
will be hot).
Switch off power to the unit.
When discharge has stopped, check the
thermal controls and replace if faulty.
Contact your local dealer.
The expansion vessel is broken. Replace the expansion vessel.
POSSIBLE CAUSES CORRECTIVE ACTION
Cold water inlet pressure. Check the pressure reducing valve.
Replace the pressure reducing valve if
the measured pressure is >2.1 bar.
Temperature and pressure relief
valve.
Check and reset button.
The expansion relief valve is not
functioning properly.
Check for correct operation of the
pressure relief valve by turning the red
knob on the valve counter clockwise:
• If you do not hear a clacking sound,
contact your local dealer.
• In case the water keeps running out of
the unit, close both the water inlet and
outlet shut-off valves first and then
contact your local dealer.
4P610549-1.book Page 11 Wednesday, February 26, 2020 9:23 AM
Содержание
- Domestic hot water tank with option kit for air to water heat pump system 1
- Installation manual 1
- Accessories 2
- Accessories supplied with the ekhwsu domestic hot water tank 2
- Contents 2
- General information 2
- Installation manual 2
- Introduction 2
- Model identification 2
- Scope of this manual 2
- Accessories supplied with the ekuhwbb option kit for the domestic hot water tank 3
- Checklist for the required dhw accessories 3
- Installation of the ekhwsu domestic hot water tank 3
- C and excessive water pressure 10 bar in the domestic hot water tank 4
- Do not install heaters without thermal cut outs 4
- Expansion relief valve option kit the pressure relief valve prevents excessive water pressure 8 bar in the water circuit 4
- Main components 4
- Notice 4
- Refer to installation of the option kit on the domestic hot water tank on page 9 for connection of other safety devices in accordance with relevant local and national regulations 4
- Safety devices 4
- Switch off the power supply before opening the electrical box lid 4
- The domestic hot tank relief valve connections should not be used for other purposes 4
- The electrical box lid must only be opened by a licensed electrician 4
- Thermal protector the booster heater in the domestic hot water tank is equipped with a thermal protector setting 85 c 4
- Apply thermal paste to the thermistor and insert the thermistor as deep as possible in the thermistor socket fix using the nut provided 5
- Check if all domestic hot water tank accessories see accessories on page 1 are enclosed 5
- Connecting the 3 way valve 5
- Connecting the water circuits 5
- If installing an ekhwsu domestic hot water tank installing the option kit ekuhwbb is obligatory refer to the uk building regulation g3 5
- Installation guidelines 5
- Installing the domestic hot water tank 5
- Keep in mind the following guidelines when installing the domestic hot water tank 5
- Locate the domestic hot water tank in a suitable position to facilitate easy maintenance remember access is required to the electrical box refer to the grey zones in the outlook diagram 5
- Make sure to make the piping in size 1 or more and reduce to 3 4 at the inlet of the tank as to have sufficient water volume in the piping between unit and domestic hot water tank 5
- Outlook diagram 5
- Place the domestic hot water tank on a level floor surface make sure the tank is mounted level 5
- Refer to the figure below before making the connection 5
- Refer to typical application examples described in the installation manual delivered with the unit for details on connecting the water circuits and the motorised 3 way valve 5
- Take care that in the event of a leak water cannot cause any damage to the installation space and surroundings 5
- The installation location is frost free 5
- Field wiring 7
- Power circuit and cable requirements 7
- Procedure 7
- Thermistor cable 7
- For e d b h l q011 014 016 units only 8
- For ekhbh x units only 8
- Note only relevant field wiring is shown 8
- For ekcbh x units only for ehbh x units only 9
- X2m 8 9 10 a1p x9a x2m 13 14 9
- Fixed grating 10
- Installation of the option kit on the domestic hot water tank 10
- Piping requirements 10
- Trapped effluent water 10
- After completing the installation 11
- Commissioning 11
- Discharge 11
- Draining 11
- Filling up 11
- Installation procedure of the option kit 11
- Pre assembly 11
- Water main in 11
- General guidelines 12
- General symptoms 12
- Maintenance 12
- Troubleshooting 12
- Domestic hot water tank specifications 13
- Technical specifications 13
- Field wiring diagram 14
- Pressure reducing valve specifications 14
- Technical specifications 14
- Test results in accordance with en12897 2016 14
- Warning label 14
- Warning to installer 14
- Warning to user 14
Похожие устройства
- Daikin EKHWSU300BA3V3 Инструкция по монтажу
- Foodatlas WY-771 ATLAS Инструкция по эксплуатации
- Foodatlas WY-771 ATLAS Сертификат
- TOTAL TG1141256 Инструкция по эксплуатации
- TOTAL TG1121256 Инструкция по эксплуатации
- TOTAL TG1101256 Инструкция по эксплуатации
- TOTAL TG1071156 Инструкция по эксплуатации
- Foodatlas YX-390 Инструкция по эксплуатации
- Foodatlas YX-390 Сертификат
- Foodatlas YX-901S Инструкция по эксплуатации
- Foodatlas YX-901S Сертификат
- Foodatlas YX-825 Инструкция по эксплуатации
- Foodatlas YX-825 Сертификат
- TOTAL TG1121256-3 Инструкция по эксплуатации
- TOTAL TG10712526 Инструкция по эксплуатации
- TOTAL TH118366 Инструкция по эксплуатации
- TOTAL TH112386 Инструкция по эксплуатации
- TOTAL TH116386 Инструкция по эксплуатации
- TOTAL TH115326 Инструкция по эксплуатации
- TOTAL TH110286 Инструкция по эксплуатации