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Hitachi AQUAFREE RWM-3FSN2E1 Manuel D'installation page 17

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NAME OF PARTS
8 NAME OF PARTS
8.1. INDOOR UNITS:
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RWM-3~5FSN2E1-4.5/6H(1)
Mark
Heat Exchanger
1
Refrigerant gas piping
2
Refrigerant liquid piping
3
Expansion Vessel (5 liters)
4
Air Purge
5
Security Valve
6
Electrical Box
7
Water Pump
8
Water Source Port
9
Water intlet connection
10
Water outlet connection
11
Manometer
12
Water Flow switch
13
Water Pressure switch
14
Temperature sensors
15
Unit information display
16
Expansion valve
17
Operation switches
18
Rotary switches and Led indications
19
Manometer Ports
20
Electrical Heater
21
Thermostat heater protection
22
Drain Pan Kit
23
PMML138A_R1-eng-fre.indb 17
Name
Shell and tube heat exchangers .
To absorb excess water pressure, which can be caused by thermal expansion as
water is heated, or by water hammer
Remove air in the water circuit automatly via air purge valve.
Prevents excessive water pressure in the water circuit by opening at 3 bar.
Contains the all electronic components to be control the unit.
To circulate the water in the installation circuit
Unit drain and fill cock, with hose connection and cap.
Allows readout of the water pressure in the circuit.
Checks the water flow in the water circuit
Check the low water pressure in the water circuit
3 temperature sensors:
- Refrigerant Gas Temperature
- Refrigerant Liquid Temperature
- Water Outlet Temperature
Allows to read the unit status (Running, alarm,...)
Unit setting and Status
Allows to read deferential pressure between inlet and outlet water
Electrical heater provides additional heating capacity to the water if capacity of the
unit is not reached by Unit
PART II - INSTALLATION
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RWM-3~5FSN2E1
Description
PMML0138A-rev.1 - 11/2009
17
19/11/2009 14:44:33

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