User`s manual
74
Fresh Air Ventilation and Heat Exchange unit
SAF-E4
Model No.
SAF250E4
SAF350E4
SAF500E4
SAF800E4
SAF1000E4
Exhaust Air Supply Airoutdoor indoor
10deg27deg
27deg10deg
Outside Air Room Air
e.g. For cooling
in winter time
Plate heat exchanger Damper
RA
(Room Air)
SA
(Supply Air)
EA
(Exhaust Air)
OA
(Outside Air)
Exhaust Air Supply Airoutdoor indoor
29deg33deg
27deg35deg
Outside Air Room Air
Re; Building Regulations Part L2
Structure (SAF1000E4) Principle of operation (simple ventilation)
FREE COOLING ENERGY RECOVERY
Principle of operation (heat exchanging)
The Part L2 (April 2006) regulations limit the amount of electrical/gas
power to be used to provide heating or cooling in commercial
buildings. Therefore the building designer needs to select energy
efficient heating/cooling equipment, and to minimise energy losses
through ventilation systems.
The SAF recovers heat energy which would otherwise be exhausted
to atmosphere, and uses this energy to warm the air entering the
building. The reverse happens in warmer climates, where the
exhausted cool air is used to partially cool the incoming air.
Capturing this waste energy, means the heating/
cooling requirements of the building are reduced, so
smaller size plant can be selected, savings can be
made in long term energy consumption, and carbon
emissions are reduced.
The inclusion of the SAF energy recovery ventilation
units in the building design, will reduce the total
amount of carbon emissions.
Item Model
SAF250E4 SAF350E4 SAF500E4 SAF800E4 SAF1000E4
Power source
1 Phase 220-240V, 50Hz
Exterior dimensions
Height x Width x Depth
270x882x599 170x882x804 270x962x904 388x1322x884 388x1322x1135
Exterior appearance
Galvanised steel sheet
Power input W
mm
99-114 124-137 169-188 309-359 360-399
Running current A
0.46-0.48 0.59-0.60 0.79-0.81 1.48-1.50 1.85-1.93
Cooling
63 66 62 65
UHi Heating
70 69 67 71
Temperature exchange efficiency
75
Cooling
63 66 62 65
Hi
Heating
70 69 67 71
Temperature exchange efficiency
75
Cooling
66 69 77 68 68
Lo
Heating
73 71 67 74 73
Temperature exchange efficiency
77 77 75 76 76
Motor & Q’ty kW
0.02x2 0.044x2 0.062x2 0.117x2 0.137x2
Air handling equipment Fan type & Q’ty
Sirocco fan x 2
UHi
250 350 500 800 1000
Air flow Hi m
3
/h
250 350 500 800 1000
Lo
170 280 370 650 810
UHi
90 95 105 140 90
Available static pressure
Remote control
Standard equipment
Hi Pa
80 65 70 110 55
Lo
37 42 38 70 35
Air filter
Out take intake air
Protection for element (Washable) PS400
Exhaust air
Enthalpy
exchange
efficiency
Capacity
Enthalpy
exchange
efficiency
Enthalpy
exchange
efficiency
%
Specifications