THERMOBILE IMAC 4000 GAS US User manual

IMAC 4000 GAS US
USER MANUAL

240.020.950 - rev. 01 - 2019 IMAC 4000 US
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540.021.119 - rev. 00 - 2019
English
IMAC 4000 GAS US
Contents
Safety instructions
Introduction
Preparations
Use
Maintenance
Faults
Spare parts
Technical information
Installing accessories
Foreword
This manual contains the instructions for use of
the convector heaters shown on the cover. The
information in this manual is important for the
correct and safe operation of the convector
heater.
Identication of the product (Fig. 1)
The identication plate is mounted on the side of
the convector heater. The identication plate
contains the following data:
A Revolutions fan
B Total current
C Air volume
D Air Volume
E Max. resistance outlet
F Voltage
G Herz
H Net capacity (Hi)
I Net capacity (Hi)
J Fuel consumption NG
K Fuel consumption NG
L Burner manifold pressure
M Inlet burner pressure propane
N Inlet burner pressure natural gas
O Weight
P Fabrication year
Q Product code
R Serial number
Service and technical support
For information about the convector heater,
please contact your dealer of the manufacturer.
Make sure you have the following data at hand:
type and serial number of the convector heater.
Warranty and liability
For warranty and liability, see general warranty
regulations.
Environment
Note
The convector heater is made of various
metals and synthetic materials. The
heater also contains electronic parts,
which must be treated as electronic
waste. Please contact your dealer for
further information.
Only applicable to the European Union
Waste disposal of electric &
electronic equipment for business use.
For further information regarding the
disposal of products for business use at
the end of their life span, please contact
your dealer or distributor in your country.
This product may not be disposed of
together with commercial waste or as
commercial waste.
1 SAFETY INSTRUCTIONS
1.1 Pictograms in this manual
Caution
Indicates risk of damage to the
appliance.
Warning
Indicates a dangerous situation, that
can lead to death or serious injuries.
Warning
Always switch o󰀨 power when
performing maintenance or repairs on
the convector heater!
Hot
Some surfaces may be hot! Wait until
these parts have su󰀩ciently cooled
down before performing maintenance.
Suggestions and tips to simplify the
carrying out of the specied tasks or
actions.
1.2 Lifting instructions (Fig. 2)
A Lifting hooks
B Shafts for lifting using a fork-lift truck
Warning
Do not use any unsuitable material for
lifting the convector heater.
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To nd out the weight of the convector heater,
refer to table C in the Appendix at the back of this
manual.
1.3 Use this product for its intended use
The convector heater was designed for the
heating of tents, building sites, showrooms, sports
halls, storage sheds, workshops, round-the-clock
projects, warehouses, greenhouses, polytunnels,
spray arrangements, and for the drying of
agricultural produce and bulbs.
1.4 General instructions
Warning
•
•
•
•
•
•
•
•
2 INTRODUCTION
2.1 Purpose
These convector heaters are indirectly red
heaters with photocell protection, connections for
a room thermostat and a ue with rain cover.
The convector heaters have been tested at sea
level at a temperature of 20 °C.
2.2 Working principle
By using the selection switch j (g. 5) the
convector heater can be used in the following
ways:
- 0: The convector heater is switched o󰀨
- 1: Fan low speed
- 2: Fan high speed
- 3: Fan low speed; burner low
- 4: Fan high speed; burner low
- 5: Fan high speed; burner high
A room thermostat can be connected to the
operating panel. This room thermostat can be
used for checking the temperature in the heated
room. The burner automat ensures safe operation
of the burner. As soon as the burner is switched
on, the fan will rst blow the burner room clean.
The fuel pump sucks up the oil from the fuel tank.
A spark will develop between the electrodes. The
magnet valve will open after some time and the
nozzle will spray the oil under high pressure. This
will result in a combustible mixture that is ignited
by the spark between the electrodes. The light of
the ame that is created will activate the
photocell. This photocell checks whether a good
combustion is brought about. In case of poor or
no combustion, the photocell will switch the
burner to fault. When the combustion is good, the
ignition is switched o󰀨 after the safety time has
elapsed.
The selector switch o󰀨ers the possibility to
choose between high burning, low burning and
ventilate. In the high burning position, the heater
will always start up in the low position and
automatically switch to the high position after
some time.
The fan starts up slowly from the moment that the
burner is switched on. After switching o󰀨 the
burner, the fan will continue to run. The fan is
switched o󰀨 at the moment that the inside
temperature has dropped to a set value.
2.3 Main components of the convector
heater (Fig. 4)
A Lifting hook
B Flue connection
C Control panel
D Socket
E Connection for room thermostat
F Socket for power connection
G Identication plate
H Motor
I Air inlet
J Ventilator
K Shaft for lifting purposes
L Combustion chamber
M Heat exchanger
Q Drip tray
R Burner
S Hot-air outlet
T Armature nut
Read this manual carefully before
using the convector heater.
Keep this document with the
convector heater.
Follow the described procedures.
Never lean against the convector
heater.
Keep at least 2 metres away from
the exhaust opening of the
convector heater.
Make sure there is enough air for
good combustion.
Make sure there is no highly
ammable material near the
convector heater.
Only perform repair and maintance
work when the convector heater
has su󰀩ciently cooled down, and
after removing the plug from the
socket.

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2.4 Control panel (Fig. 5)
A Indicator light, blue: Fan high speed
B Indicator light, blue: Fan low speed
C Indicator light, white: Panel is live
D Indicator light, orange: Burner low
E Indicator light, orange: Burner high
F Hour counter
G Pushbutton with indicator light, red: Fault
frequency controller and reset
H Indicator light, red: Maximum temperature
I Pushbutton with indicator light, red: Fault
burner and reset
J Switch for fan and burner settings:
- 0: The convector heater is switched o󰀨
- 1: Fan low speed
- 2: Fan high speed
- 3: Fan low speed; burner low
- 4: Fan high speed; burner low
- 5: Fan high speed; burner high
K Digital thermostat
2.5 Digital thermostat/safety temp. limiter
The digital thermostat (K) has three functions:
•
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2.6 Accessories
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•
•
•
•
3 PREPARATIONS
3.1 Removing the packaging
1. Remove packaging from the convector heater.
2. Lift the convector heater to transport it to its
location of use.
Caution
Lift the convector heater according to
the instructions on the labels.
3.2 Installation
1. Make sure the convector heater is level.
2. Connect the fuel supply to the gas train
of the convector heater.
Warning - Air quality hazard
• Do not use this heater for heating
human living quarters.
• Use of direct-red heaters in the
construction environment can result in
exposure to levels of CO, CO2 and
NO2 considered to be hazardous to
health and potentially life threatening.
• Do not use in unventilated areas.
• Know the signs of CO and CO2
poisoning:
- Headaches, stinging eyes.
- Dizziness, disorientation.
- Di󰀩culty breathing,
feels of being su󰀨ocated.
• Proper ventilation air exchange
(OSHA 29 CFR 1926.57) to support
combustion and maintain acceptable air
quality shall be provided in accordance
with OSHA 29 CFR Part 1926.154, ANSI
A10 Safety Requirements for
Temporary and Portable Space Heating
Devices and Equipment used in the
Construction Industry or the Natural Gas
and Propane Installation Codes CSA
B149.1.
• Periodically monitor levels of CO, CO2
and NO2 existing at the construction site
- at the minimum at the start of the shift
and after 4 hours.
• Provide ventilation air exchange, either
natural or mechanical, as required to
maintain acceptable indoor air quality.
Fan thermostat:
After switching o󰀨 the convector heater, the
ventilator will continue to run. The ventilator
will cool down the convector heater to prevent
damage by overheating. As soon as the tem-
perature has dropped su󰀩ciently, the thermo-
stat will turn o󰀨 the fan.
Burner thermostat:
The thermostat will stop the burner as soon
as the temperature of the hot air has risen too
much.
When the air temperature has dropped
su󰀩ciently, the thermostat will turn on the
burner again.
Maximum thermostat:
The maximum thermostat will switch o󰀨 the
convector heater completely if an
overheating problem has occurred in the
convector heater.
The safety thermostat will switch o󰀨
the header completely if an overheating
problem occurred.
The burner cannot be switched on again
until the thermostat has been reset by pressing
the U key for two seconds.
Thermostat for room temperature
Air-supply hose (diameter 500 or 600 mm)
Air-inlet panels (diameter 500 or 600 mm)
Hot air outlets (diameter 2 x 600 mm or 3 x
500 mm)

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Caution
Do not switch on the convector heater if
there is no fuel, or if the connected fuel
tank is empty.
3. Set the room thermostat.
The convector heater will produce hot air
after some seconds.
To start up the ventilation:
1. Turn the rotary switch to position 1 of 2, see
g. 5.
The fan will start up slowly.
4 USE
4.1 During operation
Hot
Do not touch the ue stack or blower
outlet! The ue stack and blower outlet
get hot during operation!
4.2 Switch o󰀨
Switch o󰀨 heating:
1. Turn the rotary switch to position “0”.
The magnet valve(s) close(s) and stop(s) the
fuel supply.
The convector heater stops burning.
Caution
After switching o󰀨 the convector heater,
the ventilator will continue to run. The
ventilator will cool down the convector
heater to prevent damage by
overheating. The ventilator will
automatically stop.
The fan can start again without warning.
2. Shut o󰀨 the fuel supply.
Switch o󰀨 the cooling:
1. Turn the rotary switch to position “0”.
The ventilator will automatically stop.
4.3 Transport after use
1. Switch o󰀨 the convector heater and wait until
the fan has stopped completely.
2. Switch o󰀨 the power supply.
3. Remove the connection from the room
thermostat and place the cap on the
thermostat connection.
4. Remove the air hoses.
5. Remove the ue.
6. Remove the fuel connection.
Caution
Only use natural gas of the family I2H
and propane of the family 13P
4. Make sure there is su󰀩cient distance between
the wall and the air inlet.
Minimum distance is 1 m.
5. Ensure that the heated air is allowed to ow
freely. The minimum distance between the
outlet and any obstacle is 5 m.
6. Check the ventilation surface: per kW, a
surface area of 25 cm2 is required.
7. Check the connection of the room thermostat.
Do not remove the cap if you do not use a
room thermostat.
To connect the room thermostat, remove the
cap.
8. Install the ue (1 m and a rain cap).
9. Make sure the convector heater is switched o󰀨.
See g. 5.
10. Check the supply voltage: see identication
plate.
11. Connect the convector heater to the socket of
the electric power supply.
The indicator light “Panel live” is on.
12. If necessary, press the reset switch.
13. Reset the thermostat, see g. 5.
Installation of this appliance at altitudes above
2000 ft (610 m) shall be in accordance with local
codes, or in the absence of local codes, the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
or National Standard of Canada, Natural Gas and
Propane Installation Code, CSA B149.1.
3.3 Start up
To start up the heating:
Open the shutto󰀨 valve (Q).
1. Switch the rotary switch to position 2.
The burner starts up with low capaity and
automatically goes to high capacity.
The convector heater will produce heat and
will switch on the fan after a short while.
2. Switch on the room thermostat.
To start up the ventilation:
1. Switch the rotary switch to position 1.
See g. 5. The fan will start up.

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5 MAINTENANCE
5.1 Maintenance table
Use the table in this booklet to record performed
maintenance after each winter season.
5.2 General
Use the table in this booklet to record performed
maintenance after each winter season.
When the convector heater is to be stored for a
longer period of time:
1. Switch on the convector heater for three
minutes. This will protect the fuel pump
against corrosion.
2. Make sure the burner head is free from dust
and deposit.
A dirty heater head will cause insu󰀩cient
combustion, resulting in the development of
soot and carbon monoxide and causing
damage to the burner room.
3. Close the valve of the fuel supply.
4. Disconnect the power plug.
Warning
Switch o󰀨 power during maintenance!
Hot
Do not touch the ue and air outlet!
Wait until the ue and the air outlet have
cooled down su󰀩ciently before carrying
out any maintenance.
5.3 V-belts (Fig. 7 )
Impression V-belt tension
13 mm 32,2 N
1. Remove the upper and lower side panels (A).
2. Lower the motor (B) by turning the adjusting
nuts (C).
3. Remove the old V-belts (D).
Install new V-belts in reverse order.
Caution
Tension the V-belts according to the
table.
Description yearly check. Who
Check the general condition of the fans, ignition electrode, ionization probe, burner,
electrical installation, combustion room, and heat exchanger.
Dealer
Check the fuel lines for dirt and leakage. User
Check the air inlet for dirt User
Check the fan of the burner for corrosion and dirt. User
Check the fan for corrosion and dirt. User
Check the fan motor for proper operation User
Check the ionization probe for signs of damage. Make sure the ionization probe is free
from dust and deposit.
User
Check the settings of the ignition electrode. Dealer
Check the distributor head for dust, etc. Dealer
Clean the heat exchanger. Dealer
Clean the inlet/outlet. User
Check the V-belts. User
Check the torque of the armatures. The torque value should be 60 Nm. User

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6.0 FAULTS
Make sure the electric power supply is
switched o󰀨 and the fuel tank is full,
before you start troubleshooting.
6.1 Troubleshooting table
Warning
Switch o󰀨 power during maintenance!
Fault Nr. Cause Solution Who
The convector
heater does not
start up.
1The convector heater is not live. Check the electric connection. User
2 The burner relay is not working:
the indicator is on.
Press the reset button in the
operating panel. See g. 5 (I).
User
3 A malfunction has occurred in
the burner automat.
Replace the burner automat. Dealer
4 The thermostat has not been
set correctly.
Correct the settings. Dealer
5 The room thermostat is
defective.
Replace the thermostat. User
6 There is no cap on the
thermostat connection.
Replace the cap if the room
thermostat is not in use.
User
7 The air pressure switch has not
closed.
Check the air hoses for dirt.
Replace if necessary.
Dealer
8 The maximum thermostat is
stopping the convector heater.
Check (and correct) the air ow.
Reset the convector heater.
User
9 The combination thermostat is
defective.
Replace the combination
thermostat.
Dealer
10 There is no fuel Check whether the valve in the
fuel supply is open.
User
Check the setting of the gas
appliance regulator.
Dealer
11 The capacitor of the burner
motor is defective.
Replace the capacitor. Dealer
12 The room thermostat has been
placed in the hot-air ow.
Install the room thermostat
away from the hot-air ow.
User
The fan is starting
up immediately.
13 The fan thermostat has not
been set correctly.
Correct the settings.
See malfunction 9.
Dealer
The convector
heater is starting
up, but no ame is
forming.
14 There is air in the fuel supply. De-aerate the fuel supply. User
15 There is not enough fuel. Adjust the gas appliance
regulator.
Dealer
16 The main lter is clogged. Clean or replace the lter. User

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Fault Nr. Cause Solution Who
The convector
heater is starting
up, but no ame is
forming.
17 The distributor is blocked or
damaged.
Replace the distributor. Dealer
18 The electrodes are worn or the
settings are incorrect.
Clean or replace the electrodes. Dealer
19 The magnet valve or valves will
not open.
Check the electric connection.
You should hear a “click” when
the convector
User
Clean or replace the magnet
valve(s).
Dealer
20 The ionization probe is dirty or
defective.
Check and clean the ionization
probe.
User
Test the ionization probe and
replace if necessary.
Dealer
21 The air-inlet valve of the burner
is not correctly set.
Check the air-inlet valve.
Measure the CO2 content and
the amount of soot.
Dealer
22 The settings of the distributor
holder and/or the forcer plate
are incorrect or dirty.
Correct the settings of the
distributor holder and the forcer
plate.
Clean the nozzle and the forcer
plate.
Dealer
23 Exhaust opening or ue
connection is in poor condition.
Connect the convector heater
to a ue that is in good
condition.
Correct the connections.
User
24 The ignition transformer is
defective.
Test the insulation in relation to
the burner.
Replace the ignition transformer
if necessary.
Dealer
The burner is
starting up poorly
(stutters).
25 There is insu󰀩cient fresh-air
supply.
Open a door or window.
Use an outside-air suction
device for the burner.
User
26 There are problems in the
burner room or heat exchanger.
Clean, repair or replace the
burner room and heat
exchanger, if necessary.
Dealer
The convector
heater burns
intermittently.
27 The burner thermostat has not
been set correctly.
Set the burner thermostat
according to the manufacturer’s
specications.
Dealer
The burner is
producing soot.
28 The air inlet has not been
correctly set.
Set the air inlet. Dealer

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Record the maintenance details in table A in the
appendix of this manual.
7 SPARE PARTS
Before use we advise you to have spare parts in
store, see table B in the appendix of this manual.
8 TECHNICAL INFORMATION
See for technical specications table C in the
appendix of this manual.
9 INSTALLING ACCESSORIES
9.1 Flue (Fig. 3)
The convector heater has a ue connection.
1. Slide a ue (B) over the connection (C).
Caution
The ue must be pointed upwards. Do
not let the ue point sideways. An angle
of 45° is acceptable; the length of the
ue should be at least 1000 mm.
2. Place a rain cover (A) on the end of the ue.
Fault Nr. Cause Solution Who
The burner will
start, a ame has
been formed but
the burner stops.
29 The ionization probe is
malfunctioning or is defective.
Check the ionization probe.
Clean or replace if necessary
Dealer
30 There are problems with the
polarity or the connection to
earth.
Check the electrical
connections. Correct if
necessary.
User
The convector
heater cannot be
switched o󰀨.
31 The magnet valve or valves will
not close.
Close the cock, see g. 8 (B). User
Contact your dealer. Dealer
The convector
heater stops.
32 An overheating problem has
occurred in the convector
heater.
Reduce the resistance at the
outlet.
User
Reset the thermostat. User
Contact the dealer if the error is
repeated.
Dealer
The convector
heater stops
burning. The reset
button lights up.
33 The fuel-supply line or the fuel
lter is leaking.
Check and replace if necessary. User
34 The protective grill of the air
inlet is dirty or clogged.
Clean the grill. User
35 The heat exchanger is blocked. Clean the heat exchanger. Dealer
The convector
heater is producing
white smoke.
36 There is air in the fuel system. Check the fuel-supply line for
leakage.
User
Burner malfunction:
the indicator light
(red) is on.
37 There is no fuel. Check whether there is fuel in
the tank.
User
The ioniziation probe is dirty. Clean the ioniziation probe. User
The ioniziation probe is
defective.
Replace the ioniziation probe. Dealer
The frequency
controller has a
fault: the indicator
light (red) is on.
41 The motor of the main fan has a
problem.
Reset the frequency controller:
press the button, see g. 5 (G).
User
Contact the dealer if the error is
repeated.
Dealer

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9.2 Diameter of the ue
Flue (external) IMAC 4000
Diameter 300 mm
9.3 Air hose
An air hose may be connected to the exhaust
opening of the convector heater in order to blow
hot air at a large distance from the convector
heater.
Caution
Check the temperature resistance
of the hose used.
Contact your dealer for information about the
maximum length of the exhaust hoses, bends,
manifolds and hose clamps.
The maximum static pressure in the duct is 1000Pa
or 4.02” WC.
9.4 Diameters of exhaust hoses
Three-way outlet IMAC 4000
Diameter 500 mm
Two-way outlet IMAC 4000
Diameter 600 mm
9.5 Diameters of air-inlet hoses
Inlet IMAC 4000
Diameter 500 or 600 mm
9.6 Room thermostat
Refer to the instructions of the thermostat.

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Date Description: Maintenance or Failure Action by
A

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Date Description: Maintenance or Failure Action by

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Burner Unit Low Low High
Fan Low High High
Capacity, gross BTU 891.000 891.000 1.307.000
Capacity, net kW 820.000 820.000 1.202.000
Fuel consumption
NG - propane
gallon/hr 0.866-9.9 0.866-9.9 1.266-14.5
Burner manifold
pressure
PSI/iwc 1/27.7
Inlet burner pressure
propane
PSI/iwc 0.27/5.8 0.27/5.8 0.32/8.8
Inlet Burner pressure
natural gas
PSI/iwc 0.04/1.2 0.04/1.2 0.08/2.1
Air capacity m³/hr 18.000 24.000 24.000
CFM 10.595 14.715 14.715
Max. pressure Pa 400 1000 700
Warm air ΔT (°C) 44 31 43
°F 111 88 109
Current A 18 29 29
Fan thermostat °C 35
°F 95
Burner thermostat °C 100
°F 212
Maximal thermostat °C 110
°F 230
Power V 3 phase 230 V
Frequency Hz 60
Fan kW 7.5
HP 10
Burner Riello RS 38/M
Length FT 12.63
Width FT 3.94
Height FT 6.61
Weight kg 1300
LB 2866
B

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© 2013 Thermobile Industries B.V.
All rights reserved. The available information has been prepared to a high level of care, but Thermobile
Industries B.V. cannot be held liable for possible errors in the information or the consequences thereof.
The information provided herein may not be reproduced and/or published in any form, by print,
(electronically or mechanically) without the prior written authorisation of Thermobile Industries B.V.

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