Daikin UK.PPC150SL/R32, Руководство по установке

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UK.PPC150 - 300(SL)/R32 November 2022 —Version 2.1
Domestic hot water tank for Daikin Altherma Monobloc (R32)
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
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.
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
7.1 Draining the cylinder
Before draining the cylinder, the immersion heater should be isolated to
prevent the element from burning out. Shut the cold feed ball valve to isolate
the cylinder from the cold feed. Securely connect a hose pipe to the drain
connection on the cylinder and take to a nearby waste or soak
- away. The drain
point should be below the level of the cylinder to ensure that the maximum
amount of water is drained from the cylinder. The nearest hot tap should be
opened to allow air back into the system and prevent a vacuum being pulled in
the cylinder. Care must be taken as the draining water may be hot.
7.2 Annual maintenance
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
•
Immersion heater of the domestic hot water tank
Temperature and pressure relief valve
Check the correct operation of the temperature and pressure relief valve.
Manually operate the temperature and pressure relief valve to ensure free
water flow through the 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.
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 heat
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 a hex 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 are 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 require 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 containing an aluminium
anode. We recommend to use a non
- chloride based disinfection approved for
use with water intended for human consumption.
NOTICE
When using means for descaling or chemical disinfection, it must be
ensured that the water quality remains compliant with EU directive
98/83 EC.
This chapter contains information about:
•
the yearly maintenance of the domestic hot water tank.
NOTICE
Maintenance MUST be done by an authorized installer or service
agent.
We recommend performing maintenance at least once a year.
However, applicable legislation might require shorter maintenance
intervals.
7 Maintenance and service