13
1
4
2
6
3
5
7
3
2
1
3
B
A
7
3
B
A
1
2
2.1.- INSTALLATION GUIDELINES
2.2.- OPTIONAL OPERATIONS PRIOR TO UNIT INSTALLATION:
VENTILATION FOR CIC-CIH UNITS IS PROVIDED BY:
1.- Centrifugal fan (single or double).
2.- Drive motor.
3.- Pulley fi xed to the fan.
4.- Adjustable pulley on the fan motor.
5.- Pulley belt.
6.- Base of the motor with displacement system for tensioning belts.
7.- Tensioning screw.
The unit must be transported in a HORIZONTAL POSITION on its metal legs. Any other position may cause serious damage to
the machine. When the unit is received, it should be checked to ensure that there are no knocks or other damage, following the
instructions on the packaging. If there is damage, the unit may be rejected by notifying the LENNOX Distribution Department and
explaining on the transport agent’s delivery notice why the machine is unacceptable. Any complaint or claim made subsequently to
the LENNOX Distribution Department for this type of anomaly cannot be considered under the Guarantee.
Suffi cient space must be allowed to facilitate placement of the unit.
ALL INSTALLATION, SERVICE and MAINTENANCE operations must be carried out by QUALIFIED PERSONNEL.
When positioning the unit, be sure that the Rating Plate will always be visible since this data will be necesary to
assure proper maintenance.
The units are designed to be installed with ducts, calculated by qualifi ed technical staff. The joints to be used between ducts and
the openings to the unit should be Elastic Joints. Avoid the use of BYPASS joints between the extraction air and input air in both the
outdoor and indoor sections. The structure where the unit is placed must be able to support the weight of the unit during operation.
If there are problems of height, the transport supports can be removed by unscrewing them from
the base
(Units 020S to 085D).
REGULATING AIRFLOW AT THE FANS
The unit fan has an adjustable pulley on the drive motor so that, when the fan is switched off, the pulley diameter can be adjusted
to modify the unit’s air fl ow, as required.
1. Fixed part.
2. Moving part.
3. Fixing screw.
CLOSE PULLEY:
To increase the air fl ow from the fan,
turn the moving part in direction “B”. (Clockwise).
OPEN PULLEY:
To reduce airfl ow, turn in direction “A”. (Anticlockwise).
TENSION OF BELTS
The belts can be easily tensioned by means of the tensioning screw incorporated into the
base of the motor in the transmission unit, which also makes it easy to carry out servicing
properly.
When the tensioning screw is turned, the fan motor is moved sideways in order to tension
the pulley.
ADJUSTABLE PULLEYS
SIMPLE PULLEY
DOBLE PULLEY
DISPLACEMENT
2. INSTALLATION
