Daikin EWAD-D-H 200 Installation, Operation And Maintenance Manual Download

Page: 14 / 192

D-EIMAC00208-16EU - 14/192

The unit must be installed on a robust and perfectly level
foundation; should the unit be installed on balconies or roofs, it

might be necessary to use weight distribution beams.

Figure 3 - Lifting the unit

For installation on the ground, a strong concrete base, at least
250  mm  thickness  and  wider  than  the  unit  must  be  provided.
This base must be able to support the weight of the unit.
If  the  uni  is  installed  in  places  that  are  easily  accessible  to
people and animals, it is advisable to install protection grids for
the condenser and compressor sections.
To  ensure  best  performance  on  the  installation  site,  the
following precautions and instructions must be followed:



Avoid air flow recirculation.



Make sure that there are no obstacles to hamper air flow.



Make sure to provide a strong and solid foundation to
reduce noise and vibrations.



Avoid installation in particularly dusty environments, in
order to reduce soiling of condensers coils.



The water in the system must be particularly clean and all
traces of oil and rust must be removed. A mechanical
water filter must be installed on the unit

’s inlet piping.

Minimum space requirements

It  is fundamental to  respect minimum  distances  on  all  units  in
order to ensure optimum ventilation to the condenser coils.
When  deciding  where  to  position  the  unit  and  to  ensure  a
proper  air  flow,  the  following  factors  must  be  taken  into
consideration:



avoid any warm air recirculation



avoid insufficient air supply to the air-cooled condenser.

Both  these  conditions  can  cause  an  increase  of  condensing
pressure,  which  leads  to  a  reduction  in  energy  efficiency  and
refrigerating capacity.
Any  side  of  the  unit  must  be  accessible  for  post-installation
maintenance  operations.  Figure  3  shows  the  minimum  space
required.
Vertical air discharge must not be obstructed.
If  the  unit  is  surrounded  by  walls  or  obstacles  of  the  same
height as the unit, this must be installed at a distance no lower
than 2500 mm. If these obstacles are higher, the unit must be
installed at a distance no lower than 3000 mm.

Should  the  unit  be  installed  without  observing  the
recommended  minimum  distances  from  walls  and/or  vertical
obstacles,  there  could  be  a  combination  of  warm  air
recirculation  and/or  insufficient  supply  to  the  air-cooled
condenser  which  could  cause  a  reduction  of  capacity  and
efficiency.
In  any  case,  the  microprocessor  will  allow  the  unit  to  adapt
itself  to  new  operating  conditions  and  deliver  the  maximum
available  capacity  under  any  given  circumstances,  even  if the
lateral  distance  is  lower  than  recommended,  unless  the
operating  conditions  should  affect  personel  safety  or  unit
reliability.
When two or more units are positioned side by side, a distance
of  at  least  3600  mm  between  condenser  banks  is
recommended.
For

further

solutions,

please

consult

manufacturer

representative.

Sound protection

When sound levels require special control, great care must be
exercised  to  isolate  the  unit  from  its  base  by  appropriately
applying  anti-vibration  elements  (supplied  as  an  option).
Flexible  joints  must  be  installed  on  the  water  connections,  as
well.

Water piping

Piping  must  be  designed  with  the  lowest  number  of  elbows
and the lowest number of vertical changes of direction. In this
way,  installation  costs  are  reduced  considerably  and  system
performance is improved.
The water system must have:
1.  Anti-vibration mountings in order to reduce transmission of

vibrations to the structures.

2. Isolating valves to isolate the unit from the water system

during service.

3. Manual or automatic air

venting device at the system’s

highest point.; drain device at the system’s lowest point.

4. Neither the evaporator nor the heat recovery device must

be positioned at the system’s highest point.

2355

4000

2400

2234