©2005 McQuay International
6
Ball valve
(liquid side)
For
φ
28.6mm gas pipe, directly
connect to Tri-joint; For
φ
34.9mm
gas pipe, add a reducer and a
transition pipe
Conne
ct pipe
to
indoor u
nits
φ
28.6mm a transiton pipe
(only for
φ
34.9mm gas pipe)
C
D
Tri-jiont
A >10mm
B >200mm
C >500mm
D>100mm
Gas pip
e
Elbow
Liquid p
ipe
Balanc
e pipe
B
To balance pipe
access valve
To units ball valve
To units ball valve
Main and slave units must be
installed in the same level
Access valve for
balance piping (
φ
9.52)
Ball valve (gas side)
Re
mo
ve
the
pa
ne
l
Knock-out-hole
Knock-out-hole
Piping connection position
A
Knock-out-hole
(for connecting balance pipe)
Note
：
Outdoor unit transportation shall be very careful;
Do use special rope to tie the units for transportation;
Do not touch the fins of units to avoid hurt of hand;
Do keep the plastic bag from the child;
4.4 Outdoor unit Installation
●
To use the solid base or supporter, considering the strength of the floor and drainage and piping layout;
●
To screw bolt to fix the 4 corner of unit, to avoid the impact of strong wind and earthquake;
●
To stop the vibration transfer, to take some measure to stop it , such as rubber and vibration absorber;
Warning
：
：
：
：
●
Installation ground and base shall be strong enough;
5 Installation of the combined outdoor units
（
（
（
（
Suitable for Model of MDS260~320
）
）
）
）
Two outdoor units can be grouped as one outdoor unit, to couple with multi-indoor units; Grouped outdoor units installation is more
complicated than that of the single outdoor unit; please read the below notes carefully before installation;
5.1 Select the position of the installation for outdoor unit
Select one unit as the main unit, the other one as the slave unit; and two units shall be positioned in the same level side by side;
●
Main unit and slave unit shall be installed in the same level;
●
The distance between main and slave unit shall be more than 10mm ;
5.2 Piping connection of the outdoor units
Accessory copper parts are packed with the outdoor units; piping connection includes gas, liquid and balance piping connection between
the main and slave units; all piping shall be with insulation material and avoid any damage of this insulation material;
5.2.1 Gas and liquid piping connection
●
Gas and liquid piping connection with the units, please refer to the concerned chapter of “ installation of refrigeration piping”;
Gas and liquid piping shall be connected paralleled, shown as below. The dimensions of the straight pipe connected to the Tri-joint must
meet the requirements below;
Unit model
Absorber quantity
Absorber SPEC
280
×
180
×
15mm
MDS080~150
4
Rubber absorber
6
MDS180~240
8
MDS260~320
