A
B
C
Hsf
(mm)
29
INSTALLATION OPERATIONS AND MAINTENANCE MANUAL - RXC/Hi SERIES
12.8 Condensate drain connection
The connection to the condensate drain must be carried out on site by the customer, through a rigid pipe attached to the
1/2" F external diameter fitting located on the side panel of the unit.
A siphon sized for the maximum vacuum inside the unit must be installed on the condensate drain pipe.
A
≥ 70
(mm)
B
≥ 1.5 x C
(mm)
C
≥ External Static Pressure (Pa)/10
(mm)
Example:
If the unit has 220 Pa of external static pressure, the total height (A+B) of the siphon (Hsf) in mm is:
Hsf = A + B = 70 + ( 1.5 x (220/10) ) = 103 mm
B = 1.5 x C where C = 22 mm
Each drain must be independent and have its own siphon.
The lack of a siphon may affect the proper operation of the unit.
12.9 Hydraulic connection to the water coil
For a correct hydraulic connection to the water coil and to the relative modulating 3-way valve, proceed as shown in the dia-
gram below:
GENERAL RULES
• Respect the IN / OUT adhesive references on the side of the unit;
• The path of the pipes must be assessed so as not to create particular obstacles in case of removal of the coil;
• The piping must be supported by specific brackets in order to prevent their weight from bearing on the unit;
• The interposition of flexible joints is strongly recommended in order to avoid the transmission of vibrations and noise;
• During installation the hydraulic connections of the coil must be protected from twisting by locking;
For proper operation of the equipment, it is recommended to supply the unit with a dedicated pump and to vent the circuit
using the appropriate vent valves on the coil manifold.
Hydraulic
network system
OUTLET
INLET
Water
pump
3-way
valve
External coil
module
Hydraulic
network system
