Mandik MONZUN 15 Series Instructions for use

2
1. Description of heaters MONZUN...................................................................................….
3
2. Description of function.......................................................................................................….
3
3. Dimensions and weights..........................................................................................….……
4
4. Versions..…………...................................................................................................….…..
4
5. Technical parameters.….......................................................................................….……..
6. Material, surface treatment......................................................................................….……
7. Pressure losses.............................................................................................................….…
8
8. Examples of flue gas exhaust and combustion air supply solutions...............................….…
9
9. Installation principles...............................................................….…………………………..
10
10. Gas connection installation......................................................................................….…….
10
11. Electrical installation....................................................................................….…….……….
11
12. Commissioning………………..........................................................................….………..
12
13. Decommissioning...............................................................................................….……..
12
14. Maintenance..............................................................................................................….…..
12
15. Failures and their elimination.................................................….……………………………..
13
16. Conversion to another type of fuel....................................................................................….
15
17. Components used in heaters MONZUN............................................................….……….
16
18. Recycling and disassembly at end of service life.....................................................….…
16
19. Wiring diagram..........................................................................................….……….………
17
20. Control box.........................................................................................................….………..
18
21. Data label.............................................................................................................….…….
19
22. Ordering key.........................................................................................................….……..
19
23. Mixing chamber...................................................….…………………………….………….
20
24. Fixed console………………………………..............................................................….…..
21
25. Swivel console..............................................................….…………………………….……
21
26. Roof section…...............................................................….…………………………….…..
21
27. Roof warhead...........................................................….…………………………….……….
22
28. Passage part...........................................................….…………………………….………..
22
29. Rain protection louver PDZM.............................................….………………………………
22

3
Hot air gas heaters MONZUN are designed for ventilation and ecological heating of rooms and halls by
heated air. Available versions are in a power range from 15 kW to 60 kW with an airflow from 2500 to
8000 m /h in size: 15, 20, 30, 40, 50 and 60. In terms of gas extraction equipment, it is an open or closed
appliance with forced exhaust flue gas.
Appliance categories - II2E3B/P, II2ELL3B/P, design B23, C13, C33, C63
Degree of electrical protection is IP40
Emission value NOx to 70 mg/kWh acc. to commission regulation (EU) 2016/2281 (Ekodesign 2021)
Emission class - NOx 5
A common operating fuel for MONZUN units is:
●natural gas – ZP (G20/G25)
●propane-butane – PB (G30/G31)
●propane – P (G31)
The MONZUN heaters are in the standard version intended for installation in weather-protected
environments of class 3K3 according to EN 60721-3-3 with temperature range from 0° to +35 °C, for
spaces without explosion hazard according to EN 1127-1. The air passing through the unit and the
combustion air must not contain solid, fibrous, sticky or aggressive particles. They cannot be installed
in rooms where there is a risk of fire or explosion.
The control of the power output of the MONZUN heaters is continuous from minimum power to rated /
maximum power. The heated air flow is forced by an axial fan.
Due to the high efficiency it is necessary to install a condensate drain from the chimney, unless it is
otherwise addressed in special cases.
3
The heater operation is controlled by the control automatics.
After the heater is switched on, the burner fan starts to ventilate and the exchanger is ventilated with
fresh air for 30 s.
After the venting time, starting speed of the burner fan is set by the the control automatics, the burner
electrical ignition is triggered and the electromagnetic gas valve is opened. After the burner is ignited,
the speed of the burner fan is adjusted to the operating speed according to the required power.
When the heater exchanger is heated to the set temperature, the fan operating thermostat triggers the
axial air fan and the heater starts to blow heated air.
When the heater is switched off, the control unit automatically closes the electromagnetic gas valve, the
speed of the burner fan is adjusted to the ventilating speed and the exchanger is ventilated with fresh
air. The axial air fan keeps running and ensures that the exchanger cools down below the set temperature.
The function of the burner fan is monitored by the control automatics with the help of the fan motor speed
sensor.
The temperature of the exchanger is monitored by thermostats:
● Operating thermostat of ventilator (switches the axial fan ON and OFF according to set temperature)
● Burner operating thermostat (checks the correct temperature of the heat exchanger, if the set
temperature is exceeded, its shuts down the burner operation)
● Emergency thermostat (checks the maximum allowable temperature of the heat exchanger and
when this limit temperature is reached, shuts down the gas burner and activates the warning light.
Operator intervention is required to unblock the emergency thermostat. Operator should check the
heater and unblock the emergency thermostat.)
The control of the output power of the hot-air heater is carried out by the control signal 0–10 V (DC ±),
applied to the modulating terminals of the heater. If the control signal is not connected, after the heater
is switched on by the service switch, the heater switches to minimum power output.

4
Power light (green)
– connecting the heater to the network
Malfunction indicator light (red)
– burner ignition failure or flame extinguishing
Running light (orange)
– presence of flame
Over temperature light (red)
– exchanger overheating (failure)
Emergency thermostat deblocking button
(unscrew the cap)
E
F
B3
B2
10
30
10
A
250
N
M
P
C
B1
BHJ
K
L
G
øD
øD

5
dimension A [mm] 785 995 1200
dimension B [mm] 533 533 533
dimension B1 [mm] 735 815 815
dimension B2 [mm] 665 666 666
dimension B3 [mm] 807 948 948
dimension C [mm] 655 710 733
dimension D [mm] 80 80 100
dimension H [mm] 158 158 130
dimension J [mm] 0 26 71
dimension K [mm] 117 170 182
dimension L [mm] 160 158 165
dimension G [mm] 223 375 483
dimension M [mm] 458 668 668
dimension N [mm] 255 255 255
dimension P [mm] 72 72 275
design Z, V, P - heater weight [kg] 65 90 117
design Z, V, P - the weight of the heater
with the transport package [kg] 81 106 136
design K - heater weight [kg] 53 72 93
MONZUN heaters are available in these designs:
●For horizontal mounting - design Z
●For vertical mounting (under the ceiling) - design V
●Discharge flange - design P
●For installation in air handling units - design K
MONZUN heaters in design K do not have blinds, diffusers, fan or fan carrier and may only be used
as part of air handling units.
1
2
5
4
3
67
8
9
10
11
13
12
6
1. Cabinet of the heater
2. Burner chamber side door
3. Tilting blinds (In design V, the direction of the blinds is
different)
4. Indicators (power supply, error, running, overheating)
5. Emergency thermostat
6. Axial fan
7. Flue gas outlet
8. Combustion air inlet
9. Gas connection
10. Service switch
11. Grommet: PG 13,5 – 4 pcs
12. Fan carrier
13. Grounding screw

6
The heater housing is made of galvanized steel sheet, powder coated, the assembly of individual sheet
metal parts is made with screws and blind rivets.
The heater exchanger is made of stainless steel.
17,3 22,2 32,4 37,4 49,9 60,0
17,3 22,1 32,4 37,4 49,9 60,1
16,5 22,0 32,4 38,3 49,9 60,4
16,5 21,9 32,4 38,3 49,9 60,4
16,0 20,3 29,8 34,3 46,2 54,7
16,0 20,2 29,8 34,3 46,2 54,8
15,1 20,1 29,8 35,1 46,1 55,1
15,1 20,1 29,8 35 46,1 55,1
12,0 12,0 22,4 22,4 34,7 34,7
12,0 12,0 22,4 22,4 34,6 34,7
11,8 11,8 22,1 22,1 34,6 34,6
11,3 11,3 22,1 22,1 34,6 34,5
1,80 2,30 3,35 3,86 5,16 6,20
2,17 2,76 4,04 4,69 6,14 7,49
1,35 1,80 2,66 3,14 4,09 4,95
1,30 1,73 2,55 3,02 3,91 4,76
1,3 1,3 2,42 2,42 3,75 3,75
1,64 1,64 2,88 2,88 4,46 4,46
0,97 0,97 1,82 1,82 2,99 2,99
0,93 0,93 1,75 1,75 2,86 2,86
17 - 26
25 - 30
30 - 50
30 - 50
230/50
IP40
0,28 0,28 0,48 0,48 0,92 0,92
4
3200 3200 4950 4950 8050 8050
13,0 13,0 19,0 19,0 27,0 27,0
19,4 19,4 23,5 23,5 22,3 22,3
63,5 63,5 68,6 68,6 73,6 73,6

7
A B C M T Z
15, 20 785 533 655 458 440 2200
30, 40 995 533 685 668 440 2500
50, 60 1200 533 733 668 440 3000
The MONZUN heater has four suspension points on the upper panel and four suspension points on the
lower panel, which are fitted with M8 bolts, for which it is attached to a supporting structure, eg on a
bracket. Select the location of the MONZUN heaters so that the entire space is ventilated.
The minimum distance between the surface of the heater and other surfaces is indicated on the picture
below. The minimum distance between the non insulated flue duct and flammable materials is 200 mm.
MINIMAL SPACE
min.500
A
min.500
Z
T
B
min. 100
min. 3000
B
M
min.600
C+50

8
●flue gas duct terminated by end cap
●coaxial chimney, which simultaneously removes flue gas and air intake for combustion
●from the area where the heater is located
●from outside using piping for suction
coaxial chimney, which simultaneously removes flue gas and air intake for combustion
2,5 4 8 13 30 35 7 8 5
1,5 2 4 7 18 20 4 5 3
3,5 6 10 16 40 50 9 12 7
2 2,5 5 9 23 26 5 7 4,5
6 9 12 26 60 75 20 26 12
3,5 5 7 14 33 36 12 14 7
9 11 15 30 70 90 25 30 14
4 6 8 16 37 40 14 16 8
6 9 14 27 57 62 19 21 10
9 11 17 32 70 80 25 28 13
5 6 9 16 36 42 13 15 8
2 2,5 4 8 28 37 6 7 8 4 5
1,5 1,5 2 4 16 23 3 4 5 2 3
3,5 4 6 11 40 51 10 12 14 6 8
2 2 2 6 21 28 5 6 7,5 3 4,5
5 6 9 16 55 75 18 24 26 9 12
3 3 5 10 27 33 7 9 11 5 6
8 9 13 20 66 90 25 29 30 10 14
3,5 4,5 7 14 35 44 11 14 16 7 8
5,5 6,5 11 22 53 66 15 18 21 11 12
8 9 15 30 65 75 22 26 26 12 13
5 7 8 15 34 38 12 14 14 6 8

9
Flue gas exhaustCombustion air supply
Flue gas exhaust
Combustion air supply
min.300
1 : 100
500 200

10
The heater must be installed in accordance with applicable standards and regulations.
Hot air heaters can not be installed in places with a potential explosion hazard such as storages of
gasoline, solvents, oil, places with presence of chlorine vapor, trichlorethylene, perchlor, or high
flammable dust and wood chips etc.
The equipment must be installed by qualified personnel, according to the manufacturer's instructions
and applicable standards (EN 1020, Art. 7.4.; EN 15001-1, TPG 704 01)
●LOCAL CONDITIONS OF FUEL DISTRIBUTION, FUEL CHARACTERISTICS, OVERPRESSURE,
EXISTING STATUS HEATER SETTINGS IN THE PRODUCTION PLATE ARE COMPATIBLE;
●MAIN CONDITIONS OF ELECTRICAL POWER SUPPLY ARE COMPATIBLE WITH ELECTRICAL
DATA ON THE LABEL.
The minimum distance between the surface of the heater and the non-insulated flue gas pipe is 500 mm
from all sides, except the front distance. Front distance is 3000 mm. It is not permitted to discharge flue
gas through the wall / ceiling from combustible materials.
The conditions for connecting gas heaters to the for gas distribution and to the electricity network are
given in chapters 10 a 11.
The design and installation of the flue gas duct must comply with the relevant standard. Examples of
type installation are given in Chapter 8.
The amount of combustion air for heaters must comply with relevant standards and regulations.
Recommended installation height Z (mm) of heaters MONZUN (with outlet with tilting louvers on
discharge) is listed in Tab. 4.1.
Free access (min. 500 mm) to the burner chamber and to the exchanger must be provided from the
sides. Determination of the safety distance of heaters and exhaust pipes from the surface of building
materials must comply with the relevant standards.
Connection of heaters with output power up to 50 kW is solved according to EN1775 Gas supply - gas
pipelines in buildings - operational requirements; connection of heaters over 50 kW is solved according
to EN 15001-1 Gas supply - Gas pipelines with operating pressure higher than 0.5 bar for industrial use
and gas pipelines with operating pressure higher than 5 bar for industrial and non-industrial use. In the
piping, a stable non-fluctuating gas pressure must be guaranteed during operation of the heater. See
tab. 3.1.
The actual connection of the heater to the gas through a flexible gas hose or through a screw
connection. The gas inlet pipe is terminated with an external thread G3/4", the minimum gas hose
diameter is 15 mm. The ball valve and gas hose are not part of the heater.
Flue gas exhaust
Air supply for combustion
Gas connection
Grommet PG 13,5 - 4 pieces
Service switch
Earthing clamp

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The heater must only be connected by an authorized organization. Before connecting, check that the
type and pressure of the gas correspond to the data on the data label (on the rear panel of the heater).
The gas hose is subject to regular inspections and inspections as gas distribution (TPG 704 01). Hoses
must be protected against mechanical stress and aggressive substances. The hose must not be
subjected to tension.
The MONZUN heaters are connected to the terminal block by a power supply with a stop switch / circuit
breaker. The power input is decisive for supply sizing.
The MONZUN heaters must be connected to the TN-S system in accordance with the applicable
standards. The power supply must have the required protection according to the relevant standard.
According to EN 61140, MONZUN heaters are class I electrical appliances and are equipped with a
protective conductor connection terminal. This terminal must be connected acc. to the above standard.
Thread G 3/4“
Ball valve
Gas hose
3800 4600 4500 5500 4500 52500
3500 3500 4150 4150 4100 4100
2750 2750 3500 3500 3800 3800
5,8 5,8 5,5 5,5 5,4 5,4
3900 4700 4600 5600 4600 5250
3500 3500 4150 4150 4100 4100
2750 2750 3500 3500 3800 3800
5,5 5,5 5,5 5,5 5,4 5,4
3700 4700 4900 5400 4700 5500
3500 3500 4100 4100 4100 4100
2750 2 3400 3400 3300 3300
6,0 6,0 6,0 6,0 5,5 5,5

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The MMC control box is designed to control the MONZUN heater, which allows manual and automatic
control of the MONZUN heaters. Installation box on the wall (protection class IP 30) with added
deblocking button RESET. Manual and continuous automatic regulation of burner output in heating
mode, with the possibility to set a weekly heating program. The control box is an optional accessory and
if it is not connected, the heater will switch to minimum output power when switched on by the service
switch.
It is important to ensure that the air fan is not obstructed or that the shutters are closed, as this will
change the operating conditions of the device (too high temperature of the exhaust air due to insufficient
cooling of the exchanger) - risk of overheating of the device !!!
1. The controller is switched on and off by pressing the button
2. Use the button to switch in heating mode, the inscription HEAT is appears on the left side of the
display, then you can change the burner output power with the button . The controller has 8
levels of regulation, the lowest output 1 corresponds with the minimal burner output power of the
MONZUN hot air heater, the highest output 8 corresponds with the nominal burner output power.
These power levels can be selected manually, the inscription MANUAL appears in the upper left
corner of the screen. If you switch to automatic mode, the inscription AUTO will appear in the upper
left corner of the screen. The burner output power then changes automatically depending on the
measured and set temperature. If the heater is heating, a valve symbol appears on the display
below the desired heating value.
3. If the MONZUN heater does not start and the red backlight of the RESET button lights up, pressing
this button (hold it 2-3 sec.) will restart the heater. If the unit does not start up for the third time,
contact the service organization or the manufacturer.
4. Press one of the buttons to set the desired temperature. Below this value, the symbol is
displayed, which means that we are in manual mode (heating to the set temperature).
5. By holding the button you can switch between manual heating mode and weekly program.
V
V
1. Use the button to switch in ventilation mode, the inscription FAN is appears on the left side of
the display, and the air fan starts. If the fan does not start, contact the service organization or the
equipment manufacturer.
1. The controller is switched off and off by pressing the button . The gas supply to the burners is
interrupted, the flame goes out and the exchanger stops heating. The air fan is still in operation and
cools the exchanger. After cooling the exchanger to the temperature set on the fan thermostat, the
air fan is switched off.
1. The controller is switched on and off by pressing the button . If the exchanger is sufficiently
cooled, the air blower switches off immediately.

13
faulty light replace the light
Fuses (circuit breakers) dropped replace fuses (switch circuit
breaker)
grid failure remove the fault of the grid
faulty burner fan replace the burner fan
defective automatic control replace the control automatic
faulty burner thermostat replace the burner thermostat
defective emergency thermostat replace the emergency thermo-
stat
faulty thermal protection of the air
fan replace the air fan
defect in wiring check the electrical connection
defective gas valve replace the gas valve
defective control automatic replace control automatic
electrodes or electrode cables not
assembled or defective replace or set correctly
wrong electrode grounding ground properly
poorly set starting power properly set start power
low gas pressure in the distribution increase the pressure in the
distribution
defective ionisation electrode replace ionisation electrode
defective ionisation electrode cable
replace cable
overheated exchanger unlock thermostat
defective emergency thermostat replace the emergency thermo-
stat
incorrectly set thermostat of the
fan set the fan thermostat
defective air fan replace the air fan
faulty capacitor of the fan replace the capacitor
defective fan thermostat replace the fan thermostat
When the burner is running, it is necessary to avoid shutting down the electric power supply! This can
lead to overheating of the exchanger through thermal inertia - it does not cool down.
In case of overheating of the heater (failure of the air blower, thermostat of the burner, closed blinds,
failure of the electric current during the operation of the burner…) and subsequent blocking of the
emergency thermostat let the heater cool down, remove the fault and unlock the thermostat (unscrew
the cover of the emergency thermostat and use a tool (rod, screwdriver, …) Press the unlock button), in
case of failure or repetition of the fault, contact the service organization or the manufacturer.
Make sure the gas caps are open.
Check the power cables and control presets. Most commissioning failures result from poor cable
installation, which can lead to damage to the controller.
● 230 V between phase L1 and neutral conductor N
● 230 V between phase L1 and a protective conductor PE
● 0 V neutral conductor N and a protective conductor PE
Make sure that the room thermostat is set to heating.

14
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disconnect the internal gas hose.
4. Disconnect the cable connectors from the burner fan.
5. Disassemble the burner assembly.
6. Install in reverse order and perform a leak test.
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disassemble the electrodes with cable located on the torch holder.
4. Install in reverse order and check that the electrodes are set correctly, adjust the distance
between the electrodes. Check the function of the device.
15, 20 130 130
30, 40 130 130
50, 60 130 130
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disconnect the cable connectors from the exhaust fan.
4. Disassemble the burner assembly.
5. Disassemble the burner fan.
6. Install in reverse order, replace fan seal.
LZ
LI
15
10
5
Ionisation electrode
Ignition electrodes
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disconnect the cable connectors of the control automatic.
4. Disassemble the control unit.
5. Install in reverse order and check the function of the device.
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disconnect the internal gas hose.
4. Remove the control automatic from the gas valve.
5. Disassemble the Venturi with the gas valve (2 M6 screws with 4 mm hex).
6. Remove the gas valve from the Venturi tube (3 M6 screws with 4 mm hex).
7. Install in the reverse order and perform a leak test and check the function of the device.

15
This is a pre-setting of a mixture that is easy to ignite.
1. Install the Venturi tube to the gas valve and then together to the burner fan.
2. Completely close the richness adjusting screw = tighten as far as it will go, then loosen the number
of turns according to the table
15, 20
G20 (natural gas)
203
6,5
G25 (natural gas) 7,5
G30/G31 (propane-butane)
3
30, 40
G20 (natural gas)
202
5,5
G25 (natural gas) 6,5
G30/G31 (propane-butane)
2
50, 60
G20 (natural gas)
201
5
G25 (natural gas) 6
G30/G31 (propane-butane)
1,5
1. Disconnect the MONZUN heater from the electrical network and close the gas supply.
2. Remove the door of the burner box.
3. Disconnect the air fan cable from the terminal box.
4. Remove the air fan from the fan carrier.
5. Install in reverse order and check the function of the device.
● Flue gas analyser
● Computer with Honeywell ESYS software and cable for connection to the control automatics
● Screwdriver to adjust the richness of the mixture
When converting to a different fuel, no parts are replaced, the rebuilding consists in setting the appliance
to a new fuel.
1. Setting the burner fan speed to the respective fuel, see Tables 7.1 to 7.3. (page 11). The speed setting
is performed from the computer using Honeywell ESYS software. The computer is connected with
control automatics by Honeywell DI100001U cable. The heater must be connected to the power
supply to set the speed.
2. The fuel / air richness is adjusted by the adjusting screw on the bottom of the Venturi tube. By
loosening the screw, the fuel is added to the mixture, and the fuel goes away by tightening. The
adjusting screw has a right-hand thread.
When adjusting the richness of the mixture, first perform a pre-adjustment on the heater switched off,
and after switching on the heater and igniting the burner, adjust the richness of the mixture using the
flue gas analyser to the values in Tables 7.1 to 7.3. (see page 11).

16
G20 G25 + loosen 1
G25 G20 - tighten 0
G20 G30/G31 - tighten 3,5
G30/G31 G20 + loosen 5
The pre-setting is only to prepare a new fuel blend that can easily be ignited.
After setting the richness of the mixture, check the heater function, especially the cold starts.
1. When purchasing a new device, the supplier will take back the old heater and ensure its disposal.
2. Hand over the old heater to the manufacturer for disposal.
3. Disassemble the heater and give it away as scrap.
● Fans, Venturi tubes, gas valve and heater wiring are electrical waste
● The heater shell is a lightweight 27 grade steel waste
● The exchanger, burner and burner extension are alloyed steel waste, class 025
Control automatic
Communication cable connector
Gas valve
Place for checking the connected
overpressure (loosen the screw,
put on the manometer hose)
Venturi tube
Mixture adjustment screw

17
- power indicator light (green) - axial fan relay - control circuit power fuse
- malfunction indicator light (red) - service switch - power supply terminals
- burn indicator light (orange) - axial fan - terminals for control connection
- overheat indicator light (red) - burner fan
N
N
TK
TK
TK
TK
C
C
O
O
A
A
H
H
E
E
L1
L1
N
N
PE
PE
R1
R1
R2
R2
+
+
-
-
DC
DC
PE
PE
N
N
L
L
PE
PE
L
L
5
5
3
3
2
2
4
4
N
N
L
L
PE
PE
C
2
1
C
2
1
C
2
1
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
5
10
4
9
3
8
2
7
1
6
KA1
A1
A2
12
11
14
Burner
operating
thermostat
Emergency
thermostat
Fan
operating
thermostat
H1H2H3H4
S
FU1
CONTROL AUTOMATIC
X1
XS XR XM XP
X2
1
1
MH
- power indicator light (green) - axial fan relay - control circuit power fuse
- malfunction indicator light (red) - service switch - resistance of fan power circuit
- burn indicator light (orange) - axial fan - power supply terminals
- overheat indicator light (red) - burner fan - terminals for control connection
H
N
N
TK
TK
TK
TK
C
C
O
O
A
A
H
H
E
E
L1
L1
N
N
PE
PE
R1
R1
R2
R2
+
+
-
-
DC
DC
PE
PE
N
N
L
L
PE
PE
L
L
R
R
1
1
2
2
3
3
N
N
L
L
PE
PE
C
2
1
C
2
1
C
2
1
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
5
10
4
9
3
8
2
7
1
6
KA1
A1
A2
12
11
14
Burner
operating
thermostat
Emergency
thermostat
Fan
operating
thermostat
H1H2H3H4
S
FU1
CONTROL AUTOMATIC
XS XR XM XP X2
R
X1
M

18
For gas hot-air heaters MONZUN is designed MMC regulation, which allows manual and automatic
control of MONZUN heaters. Programmable thermostat with LCD touch screen and DS18B20 internal
temperature sensor with the possibility of external sensor connection. Installation box on the wall
(protection class IP 30) with added deblocking button RESET. Manual and continuous automatic
regulation of burner output in heating mode, with the possibility to set a weekly heating program. The
control box is an optional accessory and if it is not connected, the heater will switch to minimum output
power when switched on by the service switch.
R1
R2
Regulation MMC
L
Vent
Valve
N
B
R
Y
GND 0/10V
+
-
wago
FU
Gas hot-air heater MONZUN
CYSY 5Cx0,75
VENTILATION
DEVICE IN HEATING MODE
ALARM
HEATING
OVERHEAT
C C
O O
A A
HH
E E
L1 L1
N N
PE PE
XS
230 V / 50 Hz
PE
CYKY 3x1,5
JYTY-O 4x1
(SYKFY 2x2x0,5)
PE
RESET
RESET
MODULATION 0/10 V
GND
N N
L L
R1 R1
R2 R2
++
- -
DC DC +24 V
PE N L
XR
XM
XP
The device is preset by the manufacturer, its operation depends on correct installation and adjustment.
All equipment is tested for safety and serviceability when finished.
MONZUN heaters are packed in cardboard boxes on special pallets. The package allows you to store
up to three heaters on top of each other.
They are transported with covered vehicles. During transport, heaters must be protected against
mechanical damage and weathering. There must be no vibration and the ambient temperature must not
exceed +50 °C.
The heaters must be stored in covered buildings, in an environment free from aggressive vapours,
gases and dust. Temperatures in the range -5 to +40 °C and relative humidity max. 80% must be
maintained in the buildings. During handling and storage, the heaters must be protected against
mechanical damage.

19
Ordering example:
Hot air gas heater Monzun, power series 30, wall mounted design, fuel natural gas
Gas:
ZP – natural gas
PB – propane-butane
P – propane
Unit design:
Z – horizontal (wall mounted)
V – vertical (under the ceiling)
P – pressure flange
K – into air handling units
Performance series:
15, 20, 30, 40, 50, 60

20
F+60
F
F+60
F
BK
100 G
CK
15, 20 560 510 720 330 28
30, 40, 50, 60 710 585 870 405 40
SGF24M
X2 X1
230V / 50Hz
1 2 3 4 5 6 L N PE
AC 24 V / 50 Hz
2,5 W
1,5 W
5 VA (Imax 8,3 A @ 5ms)
DC 0…10 V @ Ri 100kΩ
150 s
-30 °C … +50 °C
1050 g
Mixing chamber is intended for mixing of outdoor and circulating air. It consists of a body made of
galvanized sheet metal and three louvers flaps designed to adjust the selected air ratio in the range of
0 to 100%.
For outdoor air, the damper is tight, for circulation air two leaking dampers. The control dampers are
mechanically coupled with manual (design .01) or continuous control actuator (design .57).
The mixing chamber is available with or without G2 filtration fabric.