DOWNLOAD SPECIFICATION AND DIMENSIONS

DOWNLOAD SPECIFICATION AND DIMENSIONS
Ventilation unit
Zehnder Novus 300
Use
The Zehnder Novus (F) 300 comfort ventilation device was specially developed
for use in demanding residential and commercial buildings. It combines
maximum comfort, simple operation and high efficiency with flexible integration
in building services. The Zehnder Novus (F) 300 ventilation device moves up
to 177 cfm of air at an external pressure of 0.8 "wc.
Efficiency
The integrated counterflow-duct heat exchanger achieves efficiencies up
to 95%. For user comfort this means: No unpleasant draft effects because
the supply air is heated almost to room temperature even at outside
temperatures around freezing.
Fans
Supply/extract fans are maintenance-free 230 VAC radial fans with integrated
power supply and electronic switching. The fans run at a constant volume flow
to keep the air volume constant at any selected fan speed. The air volume is not
affected even if the filters become soiled. Supply air and extract air settings can
be made separately for each fan level in increments of 1% from 29 - 177 cfm.
Zehnder Novus 300
Filters
The Zehnder Novus (F) 300 ventilation unit is fitted with class G4 filters
(Merv 7/8) as standard for outside air and extract air. An optional F7 pollen filter
(MERV 13) is available
for outside air.
Installation
The Zehnder Novus (F) 300 ventilation unit is characterised by its compact
design. All air connections are located on the top of the unit. The unit can be
mounted either vertically or horizontally on a wall or a mounting frame. As the
design of the unit means that it can be supplied in a left-hand or right-hand
version, installation is flexible and air ducts can be routed exactly where they
are needed.
Control and operation
The ventilation unit is controlled and operated using the control unit, which is
usually installed in the main living area of the home. The high-quality TFT touch
panel with colour display and intuitive user guidance provides the means for
control and operation via a touch screen and optimises communication with
the ventilation unit.
Maintenance
To maintain the Zehnder Novus (F) 300, users simply have to change the
integrated filters in the front of the unit regularly (every 6 months) and visually
inspect the heat exchanger. The heat exchanger should be cleaned at least every
2 years (more often if it gets very dirty). This can be done by simply removing the
heat exchanger from the device and cleaning it with soapy water. Please see the
unit manual for additional servicing tasks.
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Ventilation unit
Frost protection
The unit must be installed in a frost-free location.
The Zehnder Novus (F) 300 is equipped with automatic protection against
freezing. This prevents the heat exchanger from freezing should the outside air
temperature drop to a very low level. If the outside air temperature or the supply
air temperature at the unit drops below the threshold value, the fans will shut
down temporarily. A suitable means of frost protection specifically for the unit can
be connected upstream to heat the outside air (during winter).
Bypass
During summer nights and in the transition periods with strong sunshine the
house often becomes too warm while the outside air remains pleasantly cool.
In this case heat removal by what is known as "free cooling" helps: The cooler
outside air is supplied to the rooms in the living area bypassing the heat recovery
system. The Zehnder Novus (F) 300 ventilation unit is equipped with a sensorcontrolled motorised bypass valve for this purpose. The bypass is a standard
component and takes 100% of the return air past the heat exchanger.
Options
Humidity recovery
Unit versions with a humidity heat exchanger are available as alternatives to the
standard heat exchanger. The optional enthalpy exchanger (Zehnder Novus F 300)
is fitted with an anti-microbial polymer membrane which is capable of recovering
both heat and significant humidity. There is no risk of odours, germs or other
particles being transferred during the physical process of humidity recovery.
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Pollen filter
A large pollen filter installed in the supply air line keeps the inside of the
house pollen-free and reduces the particulate, spore and germ load: breathe
freely in times of increasing allergies.
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Zehnder Novus 300
Zehnder Novus 300
Ventilation unit
Benefits
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Comfort ventilation up to 300 m3/h
Heat recovery with an efficiency of up to 95%
Humidity recovery with enthalpy exchanger (optional)
Low power consumption thanks to the high energy efficiency of the
ventilation unit (0.23 Wh/m³)
Low noise level (21 dB(A) 3 m away from the unit)
Automatic 100% summer bypass
Frost protection controller (including protection against the downstream hot
water heating element icing over)
Quick, safe installation and maintenance
Easy operation with intuitive colour TFT touch panel
Filter replacement indicator
Preheater and postheater integration possible
Small minimum air volume, designed specifically for residential buildings
Set up for operation in conjunction with heat-producing appliances
Automatic controller for external air quality sensors
Article numbers
L = supply air left, R = supply air right, V = preheater
Luxe = advanced control
Description
Article number
Novus 300 L
527 001 980
Reference number
93 35
Novus 300 L Enthalpy
527 002 010
93 77
Tender text
Zehnder Novus (F) 300 comfort ventilation unit
with plastic counterflow-duct heat exchanger with thermal efficiency of up to
95% optional: counterflow humidity heat exchanger with selective polymer
membrane film, supply and extract fans with separate variable control in
1% increments, EC fans with constant volume flow control, automatically
controlled integrated 100% bypass, maximum air volume up to 177 cfm at
0.8 "wc, H x W x D: 38.5 x 31.2 x 23.7 inch, left-hand/right-hand vertical/
horizontal design, unit with universal controller for automatic timers or sensors,
function to monitor filter running time, frost protection control, communication
unit to control preheater and postheater, geothermal heat exchanger flap.
Air directions
The figures on the right show air directions when looking from above.
A = extract air
B = supply air
C = exhaust air
D = outside air
Outside air
Extract air
Supply air
Exhaust air
Left-hand unit version
Outside air
Exhaust air
Extract air
Supply air
Right-hand unit version
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Zehnder Novus 300
Ventilation unit
Technical specifications
Dimensions
Height (inch)
38.5
Width (inch)
31.2
Depth (inch)
23.7
Specification
Heat exchanger material
- Plastic (counterflow-duct heat exchanger)
- Polymer (humidity heat exchanger)
Interior lining material
Expanded polypropylene (EPP)
Heat output
up to 95%
Weight
110.2 lb
Dimensional drawing
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Zehnder Novus 300
Ventilation unit
Certificates
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Passivhaus (passive house)
Equipment
Equipment
Novus 300
Novus F 300
Enthalpy exchanger
x
Left-hand/right-hand design
x
x
DN 125 connector
x
x
Ready to plug in design
x
x
TFT touch panel control unit
x
x
Control
Fan levels: STANDBY, ABSENT, LEVEL 1, LEVEL 2, LEVEL 3
Fan levels can be programmed separately for supply air and extract air for each fan
level in 1% increments (35 - 118 cfm)
Weekly timer programme can be customised
Automatic sensors (CO2, humidity, air quality) optional with external sensor
Digital ON/OFF interface (e.g. external contact for OFF)
Option to connect intermittent ventilation sensor
Filter running time monitoring
Frost protection controller (including protection against the downstream hot water
heating element icing over)
Unit set up for operation in conjunction with a heat-producing appliance
Error messages
Running time monitoring (separate for fans/unit)
Power consumption in standby < 1 W
Options (with add-on module)
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Triggering of an external defroster heater
Triggering of a heating circuit or air reheating register
Triggering of an electric butterfly valve on the geothermal heat exchanger
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Ventilation unit
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Zehnder Novus 300
Zehnder Novus 300
Ventilation unit
Technical specifications
Sound, supply air
Sound power at the supply air connection at a distance of 0 ft.
Ventilation unit
Volume flow
Type
cfm
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
Novus 300
118
57
53
58
61
54
48
42
Novus 300
177
60
59
63
66
62
56
52
Sound, extract air
Sound power at the extract air connection at a distance of 0 ft.
Ventilation unit
Volume flow
Type
cfm
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
Novus 300
118
36
42
37
31
22
17
15
Novus 300
177
42
50
38
37
28
21
16
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Zehnder Novus 300
Ventilation unit
Passivhaus
Institut
Dr. Wolfgang Feist
Rheinstraße 44/46
D-64283 Darmstadt
Certificate
valid until 31.12.2011
PHI
Component
suitable for
Passive Houses: Heat recovery unit
Manufacturer:
Paul Wärmerückgewinnung GmbH
Name of product: novus 300
The criteria are valid for the cool temperate climate.
1)
Passive House Thermal Comfort Criterion:
A minimum supply air temperature of 16.5 °C is achieved at an ambient temperature of –10 °C.
Reasoning: In Passive Houses there is no need to install radiators on exterior walls. In order to avoid discomfort due to
exposure to cold air, the supply air temperature must not sink below a minimum value.
2)
Efficiency Criterion (heat):
The effective dry heat recovery rate, determined at an ambient air temperature between -15 and 10 °C, dry extraction air (21 °C)
and with balanced mass flows, must be greater than
ηHR,t,eff ≥ 75%
3)
(in this case 93 % [200 m³/h], 94,4 % [145 m³/h]).
Efficiency Criterion (electricity):
The unit's total specific electric power consumption for the operating levels applied in Passive Houses must not exceed
0,45 W/(m³/h), for the supply air delivered at design mass flow
(in this case 0,24 Wh/m³ [145 m³/h], 0,23 Wh/m³ [200 m³/h]).
4)
Air-tightness and thermal insulation:
The interior and exterior air leakage flow rates must not exceed 3 % of the nominal extraction air flow rate.
(Requirements and verification are described in the certificate’s appendix.)
5)
Balancing and controllability: (Requirements and verification are described in the certificate’s appendix.)
6)
Sound insulation: The installation in a separate room for building services is required for this unit.
The required sound pressure level of 35 dB(A) in the installation space with an equivalent absorption area of 4 m² is not
achieved. The unit has to be set up in a separate room .
sound levels of < 25 dB(A) in living spaces and < 30 dB(A) in functional spaces are achieved with sound absorbers.
(Requirements and verification are described in the certificate’s appendix.)
7)
Room air hygiene: An outdoor air filter F7 is integrated in the unit.
If the unit and all components are installed and operated according to the manufacturer’s instructions, the unit will provide
perfectly hygienic supply air. (Requirements and verification are described in the certificate’s appendix.)
8)
Anti-freeze protection: (Requirements and verification are described in the certificate’s appendix.)
The certificate is to be used as follows:
COMPONENT
suitable for
PASSIVE
HOUSES
Dr. Wolfgang Feist
Heat recovery unit:
Heat recovery rate
(effective):
93 %
Electric efficiency: 0,24 Wh/m³
Zehnder America, Inc. · 540 Portsmouth Ave. · Greenland, NH 03840 · USA
T +1 603 422 6700 · Toll Free: 888 778 6701 · F +1 603 422 9611
info@zehnderamerica.com · www.zehnderamerica.com
CDE-FLYERTS251, V0112, en, subject to changes
The following criteria were checked for the award of this certificate:
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