7
English
Liebert HPM --- A/W/F/D/H
4.1.1 --- General layout (Tab. b)
1) In soft or hard copper.
The diameter required is stated in Tab. c.
If the installer intends to use pipes of a larger diameter
(e.g. for long winding runs) then consult HPAC Technical
Sales Support.
Use as short refrigeration pipelines as possible to minim-
ize the total charge of refrigerant and the pressure drops.
Forlongruns(over50equivalentm)contactHPACTech-
nical Sales Support.
Lay the horizontal gas pipes with 1% downward gradient
towards the refrigerant flow.
2) Reduce the number of bends, which must be of large ra-
dius, to a minimum.
3) Insulate the piping as specified in Tab. b. If the pipes are
putnexttoelectricalcablesitisadvisedtoinsulatethem
to avoid damage to cable insulation.
4) There must be a minimum separation of 20 mm between
the gas and liquid pipelines.
If this is not possible insulate both lines.
5) Support both horizontal and vertical pipes with vibra-
tion---damping clamps (which include rubber gaskets).
Place these every 1.5 --- 2 m.
Fig. a --- Recommended pipe layout
2
1
3
4
5
Tab. b --- Condenser positioning
CONDENSER
POSITION
CONDENSER ABOVE
CONDITIONER
CONDENSER AND
CONDITIONER
AT SAME LEVEL
CONDENSER BELOW
CONDITIONER
(not recommended)
INSULATION
gas
int. necessary necessary necessary
ext. only for aesthetic reasons only for aesthetic reasons only for aesthetic reasons
liq.
int. absolutely not not necessary no (expose to cold underfloor air)
ext. only for aesthetic reasons only if exposed to sun only if exposed to sun
LAYOUT
6m
(see *)
gas
liquid
(*) Oil traps every 6 m of
vertical piping
room unit
(see **)
gas
liquid
room unit
liquid
room unit
(see **)
(**) see Chap. 1, Tab. a.
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