Hydraulic Connection - Lennox MiniAir 10 Installation, Operating And Maintenance Manual

13.7 Hydraulic connections
The installation and connecting of the piping is an operation that must be done correctly, otherwise it may compromise
the performance of the system. At worst it may cause irreversible damage to the machine. These operations are to be
effectuated by qualified personnel.
13.7.1 Condensation outlet connection

The condensation drip tray in stainless steel inox has a depth of D. 12 mm.

The system of drainage must provide an adequate trap to prevent the undesirable entrance of air into the
system in depression. The trap is also useful to avoid the infiltration of odours and insects.
 The dimensions and execution of the trap must guarantee that H  P, where P is expressed in mm.c.a, and is
equal to the useful static pressure of the unit installed.

The trap must have a tap for correct cleaning of the lower part, and must allow an easy disassembly.

The path of the condensation drainage tube must always have a gradient toward external.

Insure that the condensation run-off tube does not interfere with discharge of the unit.
13.7.2 Eventual connection for SKW water reheating coil

The eventual water reheating coil is supplied with "male" connections with gas threads.

The tightening must be carried out with extreme care to avoid damage to the copper collectors of the coil.

The path of the tubes must be studied in a way to avoid obstacles should it be necessary to extract the unit coil.

Inlet and outlet water must consent the thermal exchange against the current. Follow instructions found on the
WATER INLET and WATER OUTLET plate.

Provide an escape valve at the top of the unit, and a discharge valve at the bottom.

Reinforce sufficiently the units external tubes to avoid offloading the weight onto the coil.

Once connection has been effectuated, fix the external seal flush against the control panel, in this way avoiding
the passing of air.

La insulation must not rest against the panelling, as this may provoke burning.

For control purposes, organize the interception of the tube side coil when the fan is off, to avoid internal
overheating and possible damage to internal components.

Provide an anti-freeze system.

Provide a cut out switch to isolate the coil from the rest of the circuit in case of extensive maintenance needs.

Should the unit be installed in particularly cold areas, drain completely before long periods of in-operation.
26 IOM / MINIAIR-0507