Refrigerant Piping; Tightening Torques - Rotex RRHQ011AAV3 Manual De Instalación

When it is expected that the operating pressure will be low (for
example, when cooling will be performed while the outside air
temperature is low), sufficiently seal the flare nut in the stop
valve on the gas line with silicon sealant to prevent freezing.
Opening/closing the stop valve
Opening the stop valve
1. Remove the valve cover.
2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into the
valve stem and turn the valve stem counterclockwise.
3. When the valve stem cannot be turned any further, stop turning.
The valve is now open.
Closing the stop valve
1. Remove the valve cover.
2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) into the
valve stem and turn the valve stem clockwise.
3. When the valve stem cannot be turned any further, stop turning.
The valve is now closed.
Closing direction
Liquid side Gas side
Cautions on handling the stem cap
The stem cap is sealed where
indicated by the arrow. Take care not
to damage it.
After handling the stop valve, make
sure to tighten the stem cap securely.
For the tightening torque, refer to the
table below.
Check for refrigerant leaks after tightening the stem cap.
Cautions on handling the service port
Always use a charge hose equipped with a valve depressor pin,
since the service port is a Schrader type valve.
After handling the service port, make sure to tighten the service
port cap securely. For the tightening torque, refer to the table
below.
Check for refrigerant leaks after tightening the service port cap.

Tightening torques

Item
Stem cap, liquid side
Stem cap, gas side
Service port cap
Installation manual
7
Silicon sealant
(Make sure there is no gap)
Tightening torque (N•m)
13.5~16.5
22.5~27.5
11.5~13.9
R
EFRIGERANT PIPING
Field pipes can be installed in four directions.
1 2 3
4 4
Figure - Field pipes in four directions
1 Drill
2 Centre area around knockout hole
3 Knockout hole
4 Slit
5 Connecting pipe
6 Bottom frame
7 Front plate
8 Pipe outlet plate
9 Screw front plate
10 Pipe outlet plate screw
A Forward
B Backward
C Sideways
D Downward
Cutting out the two slits makes it possible to install as shown in
the figure "Field pipes in four directions".
(Use a metal saw to cut out the slits.)
To install the connecting pipe to the unit in a downward direction,
make a knockout hole by penetrating the centre area around the
knockout hole using a 6 mm drill. (See figure "Field pipes in
Ø
four directions".)
After knocking out the knock-out, it is recommended to apply
repair paint to the edge and the surrounding end surfaces to
prevent rusting.
Preventing foreign objects from entering
Plug the pipe through-holes with putty or insulating material
(procured locally) to stop up all gaps, as shown in the figure.
1
1
Insects or small animals entering the outdoor unit may cause a short
circuit in the electrical box.
Precautions when connecting field piping and regarding
insulation
Be careful not to let the indoor and outdoor piping come into
contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.
When the outdoor unit is installed above the indoor unit the
following can occur:
The condensated water on the stop valve can move to the
indoor unit. To avoid this, please cover the stop valve with
sealing material.
RRHQ0011~016AAV3(8) + RRHQ011~016AAW18
7
9
10
5 6
A
D
Putty or insulating material
(produced locally)
Outdoor unit for air to water heat pump
4PW50202-1
B
8
C