M01Z40E12-03 WSA-XSC2 432-120D 9
3 Positioning
During positioning consider these elements:
• Technical spaces requested by the unit
• Electrical connections
• Water connections
• Spaces for air exhaust and intake
3.1 Functional spaces
Functional spaces are designed to:
• guarantee good unit operation
• carry out maintenance operations
• protect authorized operators and exposed people
Respect all functional spaces indicated in the DIMENSIONS section.
Double all functional spaces if two or more unit are aligned.
3.2 Positioning
Units are designed to be installed:
• INTERNAL
• in xed positions
Limit vibration transmission:
• use antivibration devices on unit bearing points
• install exible joints on the hydraulic connections
Choose the installation place according to the following criteria:
• safe accessible position
• avoid ood-prone places
• verify unit weight and bearing point capacity
• verify that all bearing points are aligned and leveled
• install the unit raised from the ground
A correct circulation of the air is mandatory to guarantee the good unit operating.
Avoid therefore:
• obstacles to the airow
• diculty of exchange
• leaves or other foreign bodies that can obstruct the air coil
• winds that hinder or favour the airow
• heat or pollution sources close to the unit (chimneys, extractors etc..)
• stratication (cold air that stagnates at the bottom)
• recirculation (expelled air that is sucked in again)
• incorrect positioning, close to very high walls, attics or in angles that could give rise to stratication or recirculation phenomenons
Ignoring the previous indications could:
• reduce energy eciency
• alarm lockout due to HIGH PRESSURE (in summer) or LOW PRESSURE (in winter)
3.3 Saftey valve gas side
The installer is responsible for evaluating the opportunity of installing drain tubes, in conformity with the local regulations in force (EN 378).
3.4 Air channelling
When designing and manufacturing the ducting, consider LOAD LOSSES, AIR FLOW AND SPEED that must be consistent with the unit features.
Limit the load losses by optimising the path, the type and number of bends and junctions.
Consider that excessive external static pressure will lead to a reduction in ow rate, with consequent alarm lockout.
Ensure ducts are thermally insulated.
The weight of the ducting must not burden the connection anges.
Place anti-vibration joints between channels and unit.
Connection to the anges and between the various sections of the channels must guarantee air seal, avoiding dispersions penalising the
overall eciency of the system.
