Ecox EIHPTC, Installation Manual, Page: 12 / 18

12
EIHPTC
CEILING FLOOR TYPE
CAUTION
Refrigerant cannot be charged until field wiring has been
completed.
Refrigerant may only be charged after performing the leak test
and the vacuum pumping.
When charging a system, care shall be taken that its maximum
permissible charge is never exceeded, in view of the danger of
liquid hammer.
Charging with an unsuitable substance may cause explosions
and accidents, so always ensure that the appropriate refrigerant
is charged.
Refrigerant containers shall be opened slowly.
Always use protective gloves and protect your eyes when charging
refrigerant.
The outdoor unit is factory charged with refrigerant. Calculate
the added refrigerant according to the diameter and the
length of the liquid side pipe of the outdoor unit/indoor unit
connection. (suitable for throttle outdoor unit)
Fig.7-9
Pressure meter Multi-meter
-76 cmHg
Lo-lever
Lo-lever
Charge hose Charge hose
Vacuum pump
Hi-lever
Manifold valve
7.2 Additional Refrigerant Charge
Table 7-4
Liquid tube(mm) R410A R22
Ø6.35
Ø9.52
Ø12.7
Ø15.9
Ø19
0.022kg/m×(L-5)
0.011kg/m×(L-5)
0.060kg/m×(L-5)
0.030kg/m×(L-5)
0.110kg/m×(L-5)
0.060kg/m×(L-5)
0.170kg/m×(L-5)
0.085kg/m×(L-5)
0.250kg/m×(L-5)
0.125kg/m×(L-5)
0.030kg/m×(L-5)
0.015kg/m×L
0.065kg/m×(L-5)
0.030kg/m×L
0.115kg/m×(L-5)
0.060kg/m×L
0.190kg/m×(L-5)
0.095kg/m×L
0.290kg/m×(L-5)
0.145kg/m×L
orifice in the indoorunit
orifice in the outdoorunit
orifice in the outdoorunit
orifice in the outdoorunit
orifice in the outdoorunit
orifice in the outdoorunit
orifice in the indoorunit
orifice in the indoorunit
orifice in the indoorunit
orifice in the indoorunit
The Table above refer to the liquid tube.
The number of bends is up to the length of the max height drop.
Usually for each 10m need a bend.
CONNECT THE DRAIN PIPE 8.
Install the drainpipe of the indoor unit
The outlet has PTI screw bread, Please use sealing materials and
pipe sheath(fitting) when connecting PVC pipes.
NOTE
If a negative result is gotten for R from Table 7-4, no refrigerant
needs to be added nor removed.
Additional refrigerant will be twice of R from Table 7-4 if the
indoor unit installed throttle assembly.
CAUTION
The drain pipe of indoor unit must be heat insulated, or it will
condense dew, as well as the connections of the indoor unit.
Hard PVC binder must be used for pipe connection, and make sure
there is no leakage.
With the connection part to the indoor unit, please be noted not to
impose pressure on the side of indoor unit pipes.
When the declivity of the drain pipe downwards is over 1/100,
there should not be any winding.
The total length of the drain pipe when pulled out traversely shall
not exceed 20m, when the pipe is over long, a prop stand must be
installed to prevent winding.
Refer to the Fig.8-1 for the installation of the pipes.
1.5m~2m
Insulating
material
Downward declivity
lower than 1/100
Bend
S shape
VP30
Downw ard declivity
lower t han 1/100
Put as deep as possible
(about 10cm)
Fig. 8-1
Drainage test
Check whether the drainpipe is unhindered.
New built house should have this test done before paving the ceiling.
NOTE