Romus K-15 User manual

direct fired air heater
Dear customer：thank you very much for choosing our products, it’s our
pleasure to offer you our products and service. Please read the user
manual carefully before using the appliance and operate following the
operation instructions in this manual, in order to prevent fire or other
accidental danger. Keep this manual in a safe place for future reference.
Any understanding problem relates to this manual please contact your
dealer.
Warning ： During operation always provide adequate ventilation and keep a 2.5 m
safety distance away from combustible articles.
HEATER « K-15 » Réf 93449
User’s Manual - GB

Page 1
Contents
Safety warnings 2
Brief introduction of products 3
Overview of appliance 3
Introduction of pressure reducing value and hose 4
Dimensions 4
Technical data 4
Operation instructions 5
gas supply circuit 7
electric circuit 8
Exploded parts drawing 9
Parts name 9
Trouble shooting 11

Page 2
safety warnings
For your own and other’s safety please read this USER’S MANUAL and follow its instructions
carefully.
△Danger
1、Never use the heater where flammable vapors may be present, there is danger of
explosion, fire and burning.
2、Always provide adequate ventilation during the use. Only use the appliance in well
ventilated area, the air must be regular exchanged during the use (two times/one hour,
inadequate burning caused by oxygen shortage can cause carbon monoxide poisoning.
△Warning
1、It’s need a standard reducer and hose when you use this machine. (specification of
reducer：pressure Pu=700mbar，flow rate Qn=1.5kg/h）
2、Don’t use spay products at the location where the heater is used，the gas from the spay tin
can cause danger of fire and explosion.
3、Don’t use the appliance in place with combustible powder（wastepaper, wood crumbs,
fibre scraps，if these powder are sucked in the heater and heated up, flake and spark may
be ejected out and cause fire and burning danger.
4、Never block air inlet or heating part，it can cause abnormal burning and fire.
5、Never modify the heater, alteration may cause malfunction and fire, is very dangerous.
6、Don’t expose the appliance to rain or snow, never use it in humidity places either. Pull out
the plug before the routine maintenance and examination.
△Attention
1、In order to prevent fire while in operation, please don’t place articles near the heater. Keep
all combustible materials away from heater. Minimum clearances: Outlet (front) 2.5M，air
inlet (rear) 2M，top 2M，side 2M.
2、While in operation，make sure that the ground surface does not overheat，overheating
may cause fire.
3、Do not fill fuel tank while heater is in operation, make sure the heater stopped and the
flame extinguished before you fill the tank. Filling while in operation may result causing
fire.
3、Before use the appliance, make sure that the voltage and frequency on site is in
accordance with the ones shown on rating plate.

Page 3
Brief introduction of products
1，This heater is a direct fired air heater, it incorporates a fan motor to increase air
circulation and enhance the oxygen supply to ensure the effective gas burning. It
warms up the room as a space heater. By adopting the method of direct fired air
heating, it can achieve high heat input while keeps the energy consumption.
2，This product incorporates a multifunctional electromagnetic control device which
enables power shutoff-, flame failure- and overheating protections. The three
kinds of protections prevent the gas leakage and potential carbon monoxide
poisoning and fire danger induced by gas leakage.
3，A gas rate adjustment valve is installed in this product, so the heat input can be
regulated to fulfill variable requirements at different locations.
Overview of appliance
1. power cord
2 rear grid
3 plastic knob
4 control box
5 flameout protector
6 fixation nut for gas inlet
7 protection guard
8 igniter
9 power switch
10 plastic handle
11 enclosure
12 air outlet grid

Page 4
Introduction of pressure reducing value and hose
Attention ： In order to use the machine safely, please configure the correct reducer and
hose. The reducer of this machine which requested is: pressure Pu=700mbar,
flow rate Qn=1.5kg/h. Please try to use the reducer as the same as
(or the similar) the picture.
Dimensions
Technical data
Gas
pressure
Rated
voltage
Motor
power
input
Max. gas
consumption
Max.
heat
input
ot air
output
0.7bar
230V
50Hz
25W
1.11 Kg/h
15KW
300m3/h
Connection hose
hose
screw thread which connected with
this heater is G3/8 left
Connected with the
reducer
reducer
gas filling valve
Connected with gas cylinder
or air-supply

Page 5
Operation instructions
1. Prepare a full cylinder gas according to the heating requirements and make
sure the gas pressure gets 1.5 bar. Connect one end (with pressure adjusting
valve) of the gas hose to gas cylinder, tighten the connector nut to make sure
no gas leakage happens.（Figure 1）
2. Put the heater on a stable working underground, take away the protection
guard from the machine，connect the other end of gas hose with machine and
tighten the locking connector nut to ensure the soundness of the gas
inlet.（Figure 2）
3. Open the gas tap，press down the button of the pressure regulator to let the
soft hose be filled with gas，check the soundness of the connection
again.（Figure 3）
4. Set the regulator to the maximum setting.（Figure 4）
5. Make sure the machine is proper connected with the gas cylinder and the
power switch is at the “OFF（O）”position，plug the power plug in the socket
outlet，shut on the power switch（put the power switch at the
“ON（1）”position.（Figure 5）
6. When the turning of the fan blades becomes stable，use the right hand to
push the aluminum handspike of the flameout protector and keep for 10
seconds, then use the left hand to press the igniter button for ignition，after
the gas ignites keep on pressing the handspike for another 10 seconds then
release the right hand and the gas will burn continuously.（Figure 6）
7. Turn the adjustment knob to regulate the flame length and make it comply with
the corresponding heat input.
8. Repeat the above 3-7 steps when the machine runs out of gas and a new full
cylinder is to be replaced.

Page 6
Attention ： when you operate the machine according to the above procedures
and the heater doesn’t operate correctly after three times ignition, never try
to ignite again under this condition. There is explosion danger caused by
high gas concentration ！ Contact your dealer in time to clear the reason of
malfunction.
Tighten the connector
according to the
arrowhead direction
Tighten the connector
according to the
arrowhead direction
Open the gas supply
tap according to the
arrowhead direction
Press down the
pressure regulator
Put the power switch
at position“1”
Ignite

Page 7
Gas supply circuit
Working principles
When the machine is connected to the gas supply, the gas passes in sequence the
following parts: 1. Gas inlet 2. Flameout protector 3. Electromagnetic valve 4. Gas
rate adjustment valve 5. Gas nozzle 6. Being ignited by the high-voltage spark plug
and burning at the burning head 7. Current occurs in the thermocouple due to the
heat output by gas burning. 8. The thermostat activates an electric circuit to enable
the small electromagnetic valve in the flameout protector magnetizing the armature
of flameout protection valve, the gas passes through and burns continuously.
Item
Parts name
1
Gas inlet connector
2
Flame failure protector
3
Electromagnetic valve
4
Gas rate regulator
5
Gas nozzle
6
Burning head
7
Thermocouple
8
Thermostat

Page 8
Electric circuit
Motor, electromagnetic valve circuit
Ignition circuit
Flameout protection circuit
B thermostat G integral electromagnetic valve in the flameout protector
M fan motor Q power switch Q2 igniter S ignition needle S2
thermocouple Y electromagnetic valve C capacitor
Page 7

Page 9
Exploded parts drawing
Parts name
item name
1 Front grid
2 Heat insulation plate
3 Enclosure
4Plastic handle
Page 8

Page 10
item name
5Fan blade φ172 19°
6Motor 25W 230V/50-60Hz IP44
7Rear grid
8Thermostat supporter
9Thermostat operation temperature 85˙C
10 Ignition needle
11 Thermocouple
12 Thermostat clip
13 Gas nozzle
14 Nozzle seat
15 Connector
16 Adjustment valve
17 Plastic knob
18 Fixation nut M12×P1.0
19 Fixation nut M12×P1.0
20 Lameout protector
21 Electromagnetic valve
22 Gas inlet connector
23 Fixation nut for gas inlet
24 Protection guard
25 Fixation nut for igniter
26 Igniter
27 Power switch
28 Control box
29 Cord fixation head
30 Power cord
31 Cap connector
32 Copper tube
33 Burning head
34 Thermocouple clip
35 Earthing terminal

Page 11
Trouble shooting
Problem
Heater
does not
start
Heater
does not
ignite
Flameout
while
burning
Insufficient
heat input
Solution
No power
Make sure the
power is proper
connected
Low voltage
Resolve the
problem which
causes low voltage
Flame failure
protection
handspike was not
pushed to proper
position
Push the
handspike to
proper position
Gas exhausted
Replace the gas
cylinder
Power failure
Re-ignition after
the power
recovers
The knob was not
set at maximum
setting
Adjust the knob to
maximum setting
The knob was not
set in the proper
setting position
Adjust the knob
setting
Thermostat
operated
Remove the cause
after the heater
cools down, then
ignite and operate
the heater
Others
Contact service
personal or your
dealer