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2.5 Pipe Fittings
The schematic after the L-shaped pipe (provided on
field) is properly connected to the unit is shown
below:
A
A View
8
9
Table 2.4
No.
Na me
Functi on
Gas pipe
connection
1
To connect gas pipes
port
Liquid pipe
To connect liquid pipes
2
connection port
Used to measure
system pressure,
Check port
3
charge refrigerant and
vacuuming.
Communication wire
threading holes for
Communication
front-direction wiring
4
cable holes
installation
Reserved threading
Reserved cable
5
hole for front-direction
hole
wiring installation
Power cord threading
Power cable
6
hole for front-direction
hole
wiring installation
Pipe-passing window of
gas pipe and liquid pipe
Pipe hole
7
for front-direction pipe
installation
Power cord threading
Right side
8
hole for right-direction
cable hole
wiring installation
Pipe-passing window
of gas pipe and liquid
Right side
9
pipe for right-direction
pipe hole
pipe installation
Table 2.5
ΦA(OD)
SIZE
(Liquid side)
HP
8-14HP
Φ12.7
16-22HP
Φ15.9
3
2 1
ΦA
ΦB
4
5
6
7
Fig.2.6
Unit: mm
Si ze
-
-
-
Φ22.2
Φ35
Φ50
143.9×65
Φ50
89.8×65
Unit: mm
ΦB(OD)
(Gas side)
Φ25.4
Φ28.6
14
3 ABOUT THE COMBINATION
3.1 Overview
This chapter contains the following information:
List of branch joint fittings.
Recommended combination for outdoor unit.
3.2 Branch Joints
Table 3.1
Description
Indoor Unit Branch
Joint Assembly
On the choice of branch joints, refer to section "4.3.3
Piping diameters".
3.3 Recommended Indoor Unit
Combination
CAUTION
The total capacity of IDU shall be between
50%–130% of the combined capacity of
ODU.
In the system when all indoor units are
running at the same time, the total capacity of
the indoor units should be less than or equal
to the combined capacity of the outdoor unit
to prevent overloading in bad working
conditions or narrow operating space.
The total capacity of the indoor units can be
up to a maximum of 130% of the combined
capacity of the outdoor unit for a system
when not all the indoor units are operating at
the same time.
If the system is applied in a cold region
(ambient temperature is -10°C or below) or a
very hot, heavy loading environment, the
total capacity of the indoor units should be
less than the combined capacity of the
outdoor unit.
The heating capacity of heat pump will
reduce
when
the
temperature is lowered. Therefore, when
installing a heat pump in an area with low
temperatures, it is recommended to use the
IDU with auxiliary heater.
Model Name
EVRI-BP1
EVRI-BP2
EVRI-BP3
EVRI-BP4
EVRI-BP5
EVRI-BP6
EVRI-BP7
outdoor
ambient
V.1
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