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© VALLOX • We reserve the right to make changes without prior notification.

VALLOX SUPPLY AIR HEATERDriven by the vacuum caused by the extract airsystem, outdoor air is directed to the dwellingthrough the openings in the envelope. The supplyair heater enables the filtering and heating ofreplacement air coming in, thereby preventingthe sense of draught. In addition, supply air canbe directed through ducts to different rooms, e.g.bedrooms.

VALLOX 1000SUPPLY AIR HEATER FOR DUCTSuitable for preheating outdoor air coming to theventilation unit, as an alternative to freezingprotection, which stops the supply air fan.

PRINCIPLE OF OPERATION1. Supply air heater2. Supply air ductwork3. Silencing4. Cooker hood5. Roof ventilator6. Extract air ductwork

From rooms into which air is directed with asupply air heater, air must be able to flow freelyinto rooms from which air is extracted. This isnecessary in order to ensure efficient air circulation.This is implemented through door vents or otheropenings.

VALLOX SUPPLY AIR HEATEROPERATION AND LOCATION

© VALLOX • We reserve the right to make changes without prior notification. 2

Duct outletø 160 mm

Supply airtemperature

gauge

Filter

Duct outletsø 125 mm

DamperOverheatprotection

Switch500 W

Switch1000 W

The switch of the heater lights upwhen the chosen heating power isswitched on.

• Suitable as a replacement air device for extract air systems• Works with a small pressure difference• Power: 500W + 1000W = 1500W• 3 electric resistors 500 W• Adjustment of the temperature of the air coming inside with a thermostat• Outdoor air can be introduced without draught to bedrooms, for instance• Equipped with an outdoor air grease filter• Plug connection• Protection class IP 30• Weight 10 kg

Pressure loss in the supply air heater• The pressure loss in the ductwork is always added to the pressure loss of

the supply air heater indicated in the curves.• Example: If there is no information on pressure loss in the ductwork, it may

be assumed to be the same as the pressure loss in the supply air heater.As an example, when the aim is to get 18 dm3/s of air into the dwelling,a vacuum of 3 Pa + 3 Pa= 6 Pa is needed in the dwelling, and it isattained with e.g. an extract fan.

LOCATION

Warm outdoor air circulation isenhanced when the supply air heater islocated as low down as possible.

Supply air heater above a shelf ina clothing room.

Supply air heater above a clothingshelf in a small entry hall.

400 mm300 mm

210

mm

Supply airtemperaturecontroller0–40 °C

Supply air heater

Insulatedenvelope

part

VALLOX SUPPLY AIR HEATERTECHNICAL SPECIFICATION AND INSTALLATION

© VALLOX • We reserve the right to make changes without prior notification.3

Grille ø 200 mm(without wire mesh)

Wind impact may beprevented with a windprotective panel.

If cold air (colder than 10 °C) is led to the supply airducts in winter, the ducts have to be insulated by atleast 20-mm insulation, covered by a tight plastic film.

Supply air duct2 pcs ø 125 mm

Looseø 125 mmvalve

If the supply air duct is short (less than 500 mm) or willnot be installed at all, the guide plate delivered withthe heater must be installed in place in order to ensureair mixing.

Duct ø 160 mm+ thermal insulation 50 mm+ tight plastic film

AIR FLOW AIR FLOW

Filter

Upper side Upper side

CHANGING HANDEDNESS• To change handedness, turn the envelope part.• Air flows in from the side of the filter from the Ø 160 mm outlet.• Mount the sensors at points where they are required for air flow (see the figure).

- Be careful when moving the sensors.

MAINTENANCE• The heater and the filters have to be cleaned at least once a year.

- Clean the inner pats carefully with e.g. a vacuum cleaner.• Clean the filter with lukewarm (less than 40 °C) water and detergent. When needed

replace the filter. Using the heater without filter is prohibited.

ELECTRICAL CONNECTIONS

VALLOX supply air heaterModel: 2352T1 Limiting thermostat

15 °C on 18 °C offinside the unit

T2 Supply air temperatureadjustment 0 °C on 40 °C

T3 Overheat protection 95 °CR Heating resistor 500 WK1 Switch 1000 W with lightK2 Switch 500 W with light

Vallox Oy FIN-32200 Loimaa Finland Telephone +358 2 7636 300 Fax +358 2 7631 539

www.vallox.com

VALLOX SUPPLY AIR HEATERTECHNICAL SPECIFICATION AND INSTALLATION

© VALLOX • We reserve the right to make changes without prior notification.

1.09

.09E

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PRESSURE LOSSVALLOX 1000 supply air heater (duct heater)

ELECTRICAL CONNECTIONS

SUPPLY AIR HEATER 1000T1 limiting thermostat factory setting

15... 18 °C inside the unit, can beadjusted when needed 0...40 °C

T2 overheat protection 90 °CPT plugP electric radiator 1000 W

T = thermostat 0…40 °CM = indicator lampN = zeroL = power supply into thermostat4 = live when temperature

exceeds setpoint3 = empty2 = power supply to heater plug,

live when temperature is belowthe setpoint

1 = empty

400 mm300 mm

105

mm

150 mm

210

mm

• Suitable as a preheater of outdoor air introduced to the ventilation unit• Suitable for heating outdoor air entering to the ventilation system• Heating power 1000 W, equipped with a safety thermostat• Can be mounted in a cold room• Air temperature adjusted with a separate thermostat• Equipped with outdoor air grease filter• Plug connection• Electric resistor 1000 W, 230 VAC, 50 Hz, 4.5 A• Direction of air flow can be changed• Overheat protection 90 °C• Protection class IP 34• Air flow inside the heater can vary freely and even go down to zero; the

heater does not need separate air flow guarding• The heater has an in-built limiting thermostat that prevents unnecessary heating

if air flow has ceased or during summer. (Factory setting 15–18 °C,post-setting enabled in the range 0–40 °C.)

INSTALLATION EXAMPLENOTE! The heater can beinstalled in only one position:the arrow on the panelupwards.

MAINTENANCEThe heater and the filters haveto be cleaned at least once ayear.Clean the inner pats carefullywith e.g. a vacuum cleaner.Clean the filter with lukewarm(less than 40 °C) water anddetergent.If needed, replace the filter.Using the heater without filteris prohibited.

VALLOX 0-40 DUCT HEATER THERMOSTAT• Adjustment range

0–40 °C, switchingdifference circa 4 °C

• Heating indicator light• Electrical connection

15 A, 250 VAC• Changeable contacts• Ready-made

cable outlets• Capillary length 1.3 m 110 mm

90 mm

140

mm

Air flow