Daikin EKHWSU180D3V3 [15/24] Overview maintenance and service
Макгруп McGrp.ru
Задайте вопрос
Зарегистрироваться

Daikin EKHWSU180D3V3 [15/24] Overview maintenance and service

Daikin EKHWSU180D3V3 [15/24] Overview maintenance and service
9 Maintenance and service
Installation manual
15
EKHWSU150~300D3V3 + EKEXPVES
Domestic hot water tank with option kit for air to water heat pump
system
4P510673-1B – 2018.01
9.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the domestic hot water tank
9.2 Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE:Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
WARNING
▪ 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.
▪ Make sure you do NOT touch a conductive section.
▪ Do NOT rinse the outside of the unit. This may cause
electric shocks or fire.
9.3 Checklist for yearly maintenance
of the domestic hot water tank
Check the following at least once a year:
▪ Temperature and pressure relief valve
▪ Inlet control group
▪ Relief valve of the domestic hot water tank
▪ Descaling
▪ Chemical disinfection
▪ Switch box
▪ Pressure relief valve hose
▪ Booster heater of the domestic hot water tank
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.
Inlet control group
The inlet control group is a 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.
c
a
b
a Cartridge
b Strainer
c Calibration screw
1 Unscrew the plastic cover of the pressure reducing valve.
2 Extract the cartridge with the aid of long nosed pliers to grip the
head of the set screw.
3 Remove the strainer element.
4 Clean the strainer element and cartridge under clean running
water.
5 Replace if the strainer or cartridge are damaged.
6 Refit the strainer, cartridge and cover.
7 If the cartridge has been replaced, calibrate the pressure
reducing valve:
▪ Close the downstream isolating valve (field supply).
▪ Install an Allen key on the calibration screw in the centre of the
plastic cover. Rotate it clockwise to increase the outlet pressure
and anticlockwise to reduce it.
Relief valve of the domestic hot water tank (field supply)
Open the valve and check the correct operation. Water may be very
hot!
Checkpoints are:
▪ The water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
▪ Dirty water coming out of the relief valve:
▪ open the valve until the discharged water does not contain dirt
anymore
▪ flush and clean the complete tank, including the piping between
the relief valve and cold water inlet.
To make sure this water originates from the tank, check after a tank
heat up cycle.
It is recommended to do this maintenance more frequently.
Descaling
Depending on water quality and set temperature, scale can deposit
on the heat exchanger inside the domestic hot water tank and can
restrict heat transfer. For this reason, descaling of the heat
exchanger may be required at certain intervals.
Chemical disinfection
If the 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

Содержание

Похожие устройства

Скачать