Operating instructions
42
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1420944 – 05/2014
7
x
Service and maintenance
1.
Dismount the protective cover (see section 7.2).
2.
Carry out a functional inspection of the Daikin Altherma
EHS(X/H), as well as all installed accessory components
(backup heater, solar installation) by checking the
temperature display and the switching states in the individual
modes.
3.
If a Daikin solar system of the DrainBack
type is
connected and in operation, switch this off and empty the
solar panels.
4.
When operating the Daikin Altherma EHS(X/H) in a bivalent-
alternative system; switch off all heat generators and
deactivate the bivalent control unit.
5.
Visual check of general condition of the Daikin Altherma
EHS(X/H).
6.
Visual check of the water storage tank level (filling level
indicator)
Top up the water if necessary (see section 7.4), deter-
mine the reason for the low water level and remedy it.
7.
Check the connection of the safety overflow and drain hose
for leaks, free drainage and gradient.
If necessary, clean the safety overflow and drain hose and
relay it; replace damaged parts.
8.
Visual check of connections, lines and safety pressure relief
valve. In the event of damage, determine the cause.
Have damaged parts replaced by an expert heating tech-
nician.
9.
Check all electrical components, connections, and cables.
Have damaged parts repaired or replaced by an expert
heating technician.
10.
Check the water pressure of the cold water supply (<6 bar)
and if necessary the fitting or adjustment of the pressure
reducer.
11.
Check the system water pressure on the RoCon HP controller
of the Daikin Altherma EHS(X/H).
Top up the water in the heating system if necessary, until
the pressure display is within the permitted range. (see
section 7.5).
12.
Clean plastic surface of Daikin Altherma EHS(X/H)
with a
soft cloth and mild cleaning agent
. Do not use any
cleaners with aggressive solvents (damage to the plastic
surface may occur).
13.
Refit the cover (see section 7.2).
7.4 Filling and topping up the storage tank
WARNING!
Under the cover
of the Daikin Altherma EHS(X/H)
temperatures of up to 90 °C
can arise during oper-
ation. During operation,
hot water temperatures
>60 °C arise.
– Touching components during or after operation
leads to a
risk of burns
.
– Water discharged during maintenance and servic-
ing work can cause
scalding
on contact with the
skin.
●
Before carrying out servicing and maintenance
work, allow the Daikin Altherma EHS(X/H) to cool
down sufficiently.
●
Wear protective gloves.
WARNING!
Live parts can cause an
electric shock
on contact
and cause fatal burns and injuries.
●
Before beginning work on live parts,
disconnect
all of the systems circuits
from the power supply
(switch off main switch, disconnect fuse) and
secure against unintentional restart.
●
Electrical connection and work on electrical
components must only be carried out by
qualified
electricians
in compliance with valid standards
and guidelines as well as the specifications of the
energy supply company.
●
Covers off equipment and servicing flaps are to
be replaced
as soon as the work is completed.
The Daikin Altherma EHS(X/H) is designed to be low-
maintenance. No corrosion protection equipment is re-
quired (such as expendable anodes). This means there
is no need for maintenance work such as changing the
protective anodes or cleaning the inside of the storage
tank.
CAUTION!
Filling the storage container with excessive water
pressure or at too great a flow speed can result in
damage to the Daikin Altherma EHS(X/H).
●
Only fill with a water pressure <6 bar and a flow
speed <15 l/min.
UK only!
CAUTION!
If filling or topping up the storage tank is done by
means of the boiler filling and drain valve, a temporary
filling loop must be used with the appropriate backflow
prevention device in accordance with clause G24.2,
Guidance to the Water Supply (Water Fittings)
Regulations 1999.
If the storage temperature falls below a certain
minimum value, the safety settings of the Daikin
Altherma EHS(X/H) prevent the operation of the heat
pump in the case of low external temperatures:
–
External temperature < -2 °C
, minimum
storage
temperature = 30 °C
–
External temperature < 12 °C
, minimum
storage
temperature = 23 °C
.
Without backup-heater:
The storage tank water must be heated to the minimum
required storage temperature by an external heater.
With backup heater (EKBUxx):
With an outdoor temperature < 12 °C and a storage
tank temperature < 35 °C, the backup heater (EKBUxx)
is switched on automatically on in order to heat up the
storage tank water to at least 35 °C.
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