Hitachi RPI-4.0FSN4E - Kpi; System Description; Structure and Part Names

10 Servicing
393
10
SMGB0077 rev.0 - 01/2013
10.11 KPI
10.11.1 System description
An example of the system is shown below. Make sure the system has been checked by a HITACHI distributor.
Exchange mode
The air returning from the indoor part passes through the total heat
exchanger unit and is expelled outdoors.
The outdoor air is supplied through the total heat exchanger.
Ventilation bypass mode
The air from indoors is expelled without heat exchange.
Automatic selection mode
(Factory-set). The operating mode is selected automatically according to the temperature conditions (outdoor, indoor and set).
10.11.2 Structure and part names
KPI-(252-2002)(E/H)3E and KPI-(502-1002)X3E
Nº Part
1 HEX/Filters Service Cover
2 Electrical Box
3 Damper
4 Return air fan motor
5 Active module (only KPI-(502-1002)X3E)
6 Evaporator service cover (only KPI-(502-1002)X3E)
7 Expansion Valve (only KPI-(502-1002)X3E)
8 Evaporator (only KPI-(502-1002)X3E)
9 High efciency lter (optional)
10 Heat exchanger
11 Supply air fan motor
12 OA - Outdoor Air
13 SA - Supply Air
14 RA - Return Air
15 EA - Exhaust Fan