VENTS MPA 3500 W

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Supply unit with the air flow up to 3250 m³/h in the compact sound- and heat-insulated casing with water heater

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Description
Characteristics
Downloads
Dimensions
Additional characteristics
Hot water coil parameters
Designation key
Accessories

Description

DESCRIPTION	CASING
Air supply MPA unit is a complete ventilation unit for air filtration, air heating and supply to premises.	Steel casing covered with aluzinc coating internally filled with 25 mm heat- and sound-insulating layer made of mineral wool.
FILTER	HEATER
Integrated panel G4 filter ensures sufficient supply air purification.	Water/glycol heaters are used for heating of supply air in cold season. The water heaters are designed for max. operating pressure 1.0 MPa (10 bar) and max. operating temperature 95 °C of the heat medium.
FAN	CONTROL AND AUTOMATION
Centrifugal double-inlet fan with forward curved blades and built-in overheating protection with automatic restart. The ball bearings in the electric motor are maintenance free and designed for at least 40,000 hours operation.	Integrated control and automation system for threespeed (air flow) control and setting supply air temperature. The unit may be controlled from the external control panel fixed on 10 m wire delivered as a standard.
MPA...W CONTROL AND PROTECTION FUNCTIONS
Switching the unit motor on/off. Three-speed fan selection. Maintaining set supply air temperature by means of controlling the circulating pump and heat medium regulating valve. Water heater freezing protection by the temperature sensor at outlet from the heating coils and the return heat medium temperature sensor. Control and regulation of the external circulation pump installed at the heat medium supply line to the water heater (mixing unit pump). Control of the compressor and condensing unit of the water cooler by the room temperature sensor (for the models equipped with a duct air cooler).	Supply fan control and regulation. Filter clogging control. Actuating the external air damper with a return spring. Unit shut down at signal from the fire alarm system. The mixing units USWK are recommended for smooth supply air temperature regulation in the units equipped with water heaters. The mixing unit USWK with three-way heat medium regulating valve and circulation pump provides smooth heating capacity regulation and minimizes the water heater freezing danger.
MOUNTING
The supply unit can be mounted on the floor, suspended to the ceiling by means of a seat angle with a flexible connector or fixed to the wall using brackets. The unit can be installed either in such service spaces as balcony, storeroom, basement, roof space or in main premises above the suspended ceiling, in the pocket or placed directly in the room.	The unit can be mounted in any position but the vertical one with air downstream because the heating elements are not allowed under the fan. Access for the unit maintenance and filter cleaning shall be provided.

OFFICE VENTILATION EXAMPLE
Air supply and exhaust ventilation in the modern office can be arranged as follows. Air handing MPA unit, exhaust fan complying with MPA unit characteristics, intake and exhaust main air ducts are mounted in the hall behind the suspended ceiling.	The branchings are laid into the office premises and air distribution units. Intake air from outside flows through the external grille, is filtered in the air handling unit, heated to the required temperature and supplied to the office rooms through the branch duct system. Exhaust air is extracted outside through the external grille by means of the exhaust fan. Thus the office has the permanent fresh air supply, controllable air exchange, no draughts when opened windows, no dust and no noise.

MPA unit office air exchange example

Characteristics

Parameter	MPA 3500 W	Measurement unit
Frequency	50	Hz
Phase	3	˜
Voltage	400 Y	V
Maximum fan power	1270	W
Fan current	2.3	A
Total unit power	1270	W
Total unit current	2.3	A
Air capacity	3250	m³/h
Number of water (glycol) coil rows	4	-
RPM	1200	min^-1
Noise level at 3 m	53	dBА
Transported air temperature	-25 ... +40	°С
Casing material	aluzinc	-
Filter	G4	-
Insulation	25 mm mineral wool	-
Connected air duct size	600х350	mm
Weight	73.1	kg
Outdoor mounting	no	-
Duct	for rectangular air ducts	-
Type	supply	-
Mounting	floor mounting, wall mounting, ceiling mounting	-

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Downloads

Dimensions

Characteristics

Parameter	Value	Measurement unit
B	600	mm
B1	620	mm
B2	759	mm
B3	710	mm
H	350	mm
H1	370	mm
H2	530	mm
L	1000	mm
L1	880	mm
L2	440	mm

Additional characteristics

Sound-power level		Octave-frequency band [Hz]
	Hz	Gen	63	125	250	500	1000	2000	4000	8000
L_wA to inlet	dBA	84	84	86	85	77	76	73	71	69
L_wA to outlet	dBA	84	83	84	83	82	80	72	75	73
L_wA to environment	dBA	60	67	66	71	54	55	50	45	45

Hot water coil parameters

How to use water heater diagrams

System Parameters: Air flow = 2400 m³/h. Outside air temperature = -20 °C. Water temperature (in/out) = 70/50 °C.

Air Speed. Starting from 2400 m³/h on the air flow scale draw a vertical line ① till the air speed axis which makes about 3.61 m/s.
Supply air temperature. Prolong the line ① up to the point where it crosses the outside air temperature (blue curve), e.g. -20 °C; then draw a horizontal line ② from this point to the left till crossing water in/out temperature curve (70/50 °C). From this point draw a vertical line ③ to the supply air temperature axis on top of the graphic (+30 °C).
Heating coil capacity. Prolong the line ① up to the point where it crosses the outside air temperature -20 °C (red curve) and draw a horizontal line ④ from this point to the right until it crosses water in/out temperature curve (70/50 °C), from here draw a vertical line ⑤ up to the scale representing the heating coil capacity (50.0 kW).
Water flow. Prolong the line ⑤ down to water flow axis at the bottom of the graphic ⑥ (0.62 l/s).
Water pressure drop. Draw the line ⑦ from the point where line ⑥ crosses the black curve to the pressure drop axis. (15.0 kPa).

Designation key

Series	Rated air flow, m³/h	Heater type	Integrated control system
VENTS MPA	800; 1200; 1800; 2500; 3200; 3500; 5000	W: water	LCD: integrated automation with A16 control panel

Accessories

Type	Replaceable filter	Filter type
MPA 800 W	SF 442x275x47 G4	panel filter
MPA 1200 W
MPA 1800 W	SF 390x545x47 G4	panel filter
MPA 2500 W
MPA 3200 W	SF 653x440x47 G4	panel filter
MPA 3500 W
MPA 5000 W	SFK 868x573x27 G4	pocket filter