14
|LWA 252 |
LWA 252 SOL
WWW.STIEBEL-ELTRON.COM
INSTALLATION
DEVICE DESCRIPTION
8. Device
description
8.1 Function
Extract air is drawn in by the extract air fan and channelled
through the evaporator to the outside.
The energy made available by the heat pump is transferred in a
separate condenser to the DHW system.
Where there is a high DHW demand, the DHW is heated by an
electric immersion heater.
2
6
_0
3_0
1
_0
2
5
4
1 Extract fan
2 Compressor
3 Immersion heater
4 Heat exchanger
5 Condenser
6 DHW cylinder
7 Non-return valve
8 Filter dryer
9 Evaporator
10 Expansion valve
I Extract
air
II Discharge air
III Discharge air (optional)
IV DHW
V Circulation
VI Cold water
8.2 Design
operation
This appliance is designed for ventilation in apartments and
detached houses as well as centralised DHW heating for several
domestic draw-off points.
Never:
— Use extracted air loaded with grease, explosive gases, dust or
adhesive aerosols
— Connect cooker hoods to the ventilation system
— Heat liquids other than potable water
Never install the appliance:
— Outside
— In rooms where there is a risk of frost
— In wet rooms, such as bathrooms
Never operate the appliance:
— Without discharge air and extract air ducts
— Without decentralised inlet air elements
— Without ventilation function
— With an empty cylinder
— Whilst building work is in progress
8.3 Standard
delivery
— Operating and installation instructions
— PT 1000 solar collector sensor (only with the LWA 252 SOL)
Part no. 165818
8.4 Special
accessories
Description
Part no.
Outside temperature AFS 2
165339
Remote control with room sensor RC 1
170328
External wall air outlet
073184
