THERMOSTAHL NANI 35 User manual

PELLET BURNER
NANI 35
INSTALLATION AND USER MANUAL
VERSION:
1.2
UPDATE:
25.01.2019

Contents
1. Warnings, Cautions and Notes .......................................................................... 3
1.1. Document information ....................................................................................... 3
2. Function principle.............................................................................................. 4
3. Technical specifications..................................................................................... 4
4. Boiler ................................................................................................................ 5
5. Chimney ............................................................................................................ 5
6. Electrical connections........................................................................................ 6
7. Controller .......................................................................................................... 7
7.1. General description ........................................................................................... 7
7.2. Description of buttons........................................................................................ 7
8. Operation functions........................................................................................... 8
9. Parameters........................................................................................................ 9
10. Room thermostat ............................................................................................ 11
11. Start of the burner .......................................................................................... 11
12. Stop of the burner ........................................................................................... 12
13. Cleaning burner's chamber.............................................................................. 12
14. Restart the burner after an error..................................................................... 13
15. Feeder filling procedure .................................................................................. 13
16. Burner safety systems..................................................................................... 13
17. Errors .............................................................................................................. 14

3
1. Warnings, Cautions and Notes
1.1. Document information
This document is an integral and indispensable part of the product and must be retained in good
condition by the user. Keep it in a safe place for future reference.
If the appliance is sold or transferred to another person, this manual has to always follow the
appliance and handed to the new user or installer.
Read the safety instructions carefully before
installation. Always follow the safety
instructions during installation and during
maintenance
Installation, operation, service, and other work
must be carried out by qualified personnel in
accordance with local codes and regulations.
All electrical installation and service work shall
be done by certified and qualified personnel
inaccordance with local codes and regulations.
Do not perform electrical work unless you have
the required qualifications. Perform a
complete burner shutdown and disconnect the
power supply prior to performing any work on
the burner. Observe all guidelines with respect
to installation, service, or cleaning.
Children and adults should be alerted to the
hazards of high surface temperatures and
should stay away to avoid contact to skinand /
or clothing.
Always follow the instructions for operations
and service.
There is a risk of burn from touching the
equipment during operation.
The burner casing, burner body, flange, and
flame trap pipe are hot surfaces during
operation. Keep children away and do not
touch the equipment during operation.
Young children should be carefully supervised
when they are in the same room with the
burner.
Electric switch must be used to the
power supply cable as an emergency stop
Only wood pellets are to be used with this
burner. No other fuel is to be used in the
burner.
NEVER BURN ANY TYPE OF CORN, CHERRY
PITS, STICKS OR OTHER TYPES OF FUEL
IN THE BURNER.
Burning wood pellets according to
recommendations and the specifications set
forth will assure longer burner life and lessen
potential maintenance issues.
DO NOT install in a sleeping room.
DO NOT connect to any air distribution duct or
system.
DO NOT terminate the vent in any enclosed or
semi enclosed area, such as; carports,
garage, attic, crawl space, under a sun deck
or porch, narrow walkway or closed area, or
any location that can build up a concentration
of fumes such as a stairwell, covered
breezeway etc.

4
2. Function principle
The burner's operation is based on providing fuel via controlling the feeder appropriately and
also the air fan which steers the burning process. After reaching a particular temperature of the
heating water, the burner goes into the mode of maintaining the temperature or switches the
burner completely off. The ignition of fuel starts automatically with the help of an igniter and the
fire is detected by the fire sensor.
The burner has three modes of operation: Continuous/Single/Analogue (see paragraph 8).
The burner can also control Hot Usage Water (WUW or HUW) pump or buffers tank's pump. The
WUW pump starts working when the regulator detects too low temperature of the WUW buffer.
It is also possible to stipulate the working mode of the WUW pump –with a priority or without
it. The burner can be also controlled (ON/Off) by the Room Thermostat or by any external
thermostat. The burner is also equipped with the self-control systems (detecting the malfunction
of the temperature's sensors) and mechanisms monitoring the furnace's work preventing from
going beyond the range of safety for the installation of the central heating.
3. Technical specifications
Type
Nani 35
Heat output
Heat outup
10-35 kW
Maximum pellet
consumption
2-7,45 kg/h
Average pellet
consumption/day
8-55 kg
Lenght (total)
610 mm
Width
210 mm
Height with feeding pipe
420 mm
Height without feeding pipe
225 mm
Diameter
Ø137 mm
Power supply
230Volt / 80Hz
Average power consumption
30-40 Watt (approx.)
Fuel
Wood pellet
Ø6-8mm, hymidity <10%
Weight
14 kg
Feeder's length
1,5 m

5
4. Boiler
It is important to check that the combustion chamber in the boiler is big enough to ensure that
the flame does not come in contact with the water-cooled walls. Verify that the boiler’s capacity
range complies with the burner. There must be enough space for the ash to accumulate. The
exhaust gas channels should not be so narrow that they can easily be clogged with ash.
The distance between the front edge of the burner and the rear part of the combustion chamber
should be at least 300mm for low burner's power (10-20kW) If the burner's power increase then
the distance must be increased. This distance is also depended on the boilers construction and
if the boiler is (oil/gas boiler or wood boiler)
The minimum distance to the bottom of the fireplace also depends on the boiler design.
There must be enough space for the quantity of ash build up that is created during at least one
week’s use in the winter heating season.
5. Chimney
We recommend that you have a local chimney sweeper or other corresponding authority make
an inspection and provide advice and instructions on the chimney measurements in accordance
with local codes and regulations.
The chimney should be of a length and diameter that gives a draught of 10 - 25 Pa. Measures
have to be taken if the chimney is smaller or much larger in diameter in order to give the proper
draught and flow.
If there is not enough draught in the chimney, exhaust gases stack in boiler's combustion
chamber or in the chimney with the risk of explosion. Also, gas flow into the boiler's room can
happened.
Always check the exhaust gas temperature. Directly after the boiler it should be between 160°C
and 250°C.
Too high a temperature can damage the chimney and is not economical.
Too low a temperature, a very high chimney, or a large chimney diameter creates a risk for
condensation that can cause corrosion and damage due to freezing.