REMKO GPS Series, GPS 15, GPS 25, GPS 55, GPS 35 Operating And Installation Instructions

Operating and
installation instructions

REMKO GPS series
Wall heater with 2-stage gas burner

GPS 15, GPS 25, GPS 35, GPS 55, GPS 75

Edition EN - Q07 Read the instructions prior to performing any task!

Contents

Safety notes

Unit installation

Unit description

Intended use

Customer service and guarantee

Environmental protection and recycling

Installation

Flue gas connection

Electrical wiring

Electrical wiring diagram

Gas connection

Commissioning

Maintenance

Replacement of the control board

Replacement of the STB

4

5

6-11

12

12

12

13-16

17-21

22-24

25

26

27-28

29-30

30

31

Chimney sweep

Replacement of the gas valve

Conversion to liquid gas

Troubleshooting

Unit dimensions

Exploded view of the unit

Spare parts list

Country table of gas types

Technical data

Carefully read this operating manual prior to commissioning /using
the unit!
This operating manual is a translation of the German original.

34-35

35739

42-43

31

30

32

36

40

41

These instructions are an integral part of the unit and must always be
kept in the vicinity of the installation location or on the unit itself.

Subject to modifications; no liability accepted for errors or misprints!

3

REMKO GPS series

Safety notes

Always observe the respective local building
code and fire prevention guidelines as well as
the guidelines of the accident prevention and
insurance associations when using the units.

The units have been subjected to extensive material,
functional and quality inspections prior to delivery.
However, dangers can arise from the units if they
are used improperly or not as intended by untrained
personnel!
Please observe the following notes:

■

The units may only be operated by persons

that have been instructed in their operation

■

In case of defects that endanger the operational

safety of the units, operation must be discontinued

■

The units must be installed and operated

so that the emerging flow of warm air does
not have harmful effects on either the units or
the surroundings

■

Do not expose the units to atmospheric influences

(rain, sun, etc.)

■

Do not touch the units with damp or wet body

parts, e.g. hands

■ The units must be installed away from traffic

zones - by crane, for example. A safety zone with
a clearance of 1 m must be ensured

■

The protective grid of the intake must always be

kept free of dirt and loose objects

■

The units may not be exposed to direct jets of

water

■

The units must be inspected by a service technician

at least once yearly

■

Safety devices must not be bypassed or disabled!

■

Prior to maintenance or repair work, the gas

supply must be sealed off and the unit must
be disconnected from the mains at all poles.
(Remove fuse and switch off customer-provided
main/emergency shut-off switch)

Preventative measures
with odour of gas

1. Immediately switch off the unit.

2. Close the gas shut-off device(s).

■

Protect the units from spray water or other liquids

■

Do not use gas lines for the grounding of electrical

devices

■

Do not touch hot parts of the units, such as the flue

gas pipe

■

Do not touch moving parts of the units

■

Never stick foreign objects into the units

■

The units may only be mounted on stable structures

or ceilings made of non-flammable construction
materials and with sufficient bearing capacity

■

The mounting of the units may only be

executed at the points provided for this purpose
in the factory

■ The units may not be installed or operated in

potentially flammable or explosive environments

4

3. Warn all directly endangered persons.

4. Open windows and doors.

5. Do not actuate electrical equipment such as light
switches or electrical plug-in contacts.

6. If the room in which the gas odour has emerged
cannot be entered, immediately contact the fire
brigade, police and the local responsible municipal
gas supplier.

NOTE

The units are used exclusively for industrial and
commercial applications. They are not intended
for the heating of living spaces or the like.

CAUTION

Safety devices may not be bypassed or disabled
during operation.

CAUTION

Assembly, adjustment and maintenance work may
only be carried out by authorised and qualified
technicians.

Unit installation

Application area

With the REMKO gas wall heaters from the GPS
range, it is possible to heat small rooms, such
as workshops, right through to large spaces such
as industrial warehouses, sports halls, etc.
For efficient heating it is therefore essential to
determine the necessary heat output by professionally
calculating the heat requirement for the respective
space.

CAUTION

The units must not be set up or installed in areas
with explosive or corrosive atmospheres.

General prerequisites

With the installation of the units, the local and
country-specific provisions and guidelines must
be observed in the respective valid version as a basic
rule.

Work such as the following:

Selection of the installation location

With determination of the installation location,
the requirements must be coordinated in regard to:

■

Fire protection and operational hazard

■

Function: Space heating, underpressure and/or

overpressure in the installation space, etc.

■

Operational concerns, heat requirement, nominal

air flow rate, air recirculation requirement,
humidity, room temperature, air distribution, spatial
requirements

■

Installation, repair and maintenance possibilities.

The units must be installed in such a way that they
are always easily accessible for maintenance and
repair work.

With improper installation and operation, hazards
may arise from the units. Prior to the planning and
during the unit installation, the following points must
absolutely be observed.

■

gas and electrical installation

■

conversion of the gas type

■

commissioning

■

adjustments or maintenance may only be carried

out by qualified technicians

In addition to a faultless electrical and gas installation,
it is also ensured through this measure that all
necessary measurements and test are conducted.

■

The units must be inspected by an authorised

service technician at least once yearly.
For this purpose, concluding a service contract with
a service company is recommended

■

During planning and installation of the flue gas

routeing, the structural possibilities as well as the
applicable local and country-specific regulations
must be consistently adhered to

■

In heavily soiled environments, care and

maintenance measures must be carried out
in accordance with the respective conditions.
The combustion air must be fed from outside
as a basic rule

■

The units must be installed and operated in such a

way that personnel are not endangered by flue gas
and radiant heat and no fires may occur

■

During installation of the units it must be ensured

that the flow of warm air does not have damaging
effects on the surroundings

■

Fire hazards must be eliminated through

the selection of materials for the installation
and position surfaces. For this purpose, see TRGI,
Section 5.1.3.3

■

The wall or ceiling intended for installation must

also consist of non-flammable materials. Its load
capacity must be checked; reinforcements must
be installed when necessary

■

Brackets must be securely anchored to the wall

or ceiling and the units must be attached to
the brackets at the points provided for this purpose
in the factory

■

Appropriate maintenance possibilities for heat

exchangers, burners, fan and flue gas evacuation
must be planned for

■

It must be possible to actuate control elements

for the units and fuel supply from the ground.
Maintenance and repair possibilities must be
ensured by the operator

5

REMKO GPS series

Unit description

Definition of the unit

Pursuant to EU Directives, the unit is defined as:

"Gas fan-assisted heater (WLE) without flow­operated safety device, equipped with a fan in front
of the heat exchanger".

The unit is a fully-automatic, directly-fired fan-assisted
air heater for wall and ceiling installation.
It can be fuelled with natural gas or liquid gas.

The unit is used for continuous and temporary
heating of open and closed spaces, e.g. in:

halls, workshops,
greenhouses,
storage rooms, etc.

Classification of the units

The units have been classified by the European
standardised
regulations EN 437 and EN 1020 according to:

The gas category:

determination according to the type of gases with
which they may be operated.

For Germany DE II2ELL3B/P

the cable passages for the electrical lines as well as
the plug connection for the power supply. In the right­hand side section the necessary components for the
control and safety are found behind the inspection
door, including e.g.:

- the electrical circuitry with the cabling

- the control electronics

- the gas valve

- the modulating gas burner

In the interior of the unit, directly in the circulation air
flow, is the combustion chamber with heat exchanger.
The combustion chamber is manufactured entirely
from Inox stainless steel, AISI 430. For the purpose
of higher resistance to corrosion from damp vapours,
Inox stainless steel, AISI 441 is used for the heat
exchanger.
The special form and the large surface area
of the combustion chamber and heat exchanger
guarantee a high level of efficiency and long service
life.
The gas burner is likewise manufactured entirely from
special, mechanically-processed stainless steel.

The gas type:

the burner can be operated with gases of the second
family (natural gas - group H and L) and with gases
of the third family (butane and propane).

The type of gas fireplace:

differentiation according to the possibilities
of the discharge of the combustion products
or the supply of the combustion air.

(ambient-air-dependent/independent)

Additional notes can be found in the chapter
"Installation of the flue gas evacuation and
the combustion air supply".

Design of the units

The exterior cladding of the units is made from coated
steel sheet, which guarantees durability.
The outlet grid is found in the front section.
In order to ensure an optimal distribution of warm
air in the installation location, the horizontal fins of
the outlet grid can be manually adjusted. On the rear
side of the unit you will find the fan(s) with protection
grid, the connection nozzles for the removal of
the flue gas and supply of the combustion air, the gas
connection nozzles,

Function of the units

The 2-stage gas wall heaters of the GPS series have
been developed for the heating of industrial and
commercial spaces.
The electronic control of the unit regulates the heat
output between minimum and high-output according
to the set NTC1 temperature.
With the pre-mix and modulation technology,
efficiency of up to 94% can be achieved.

The nominal heating capacity of the REMKO GPS
series lies between 13.0 and 73.5 kW.

The units consist primarily of the combustion chamber
with heat exchanger and the fan(s).
The ambient air is suctioned in by the fan(s) and
efficiently channelled through the combustion
chamber with heat exchanger. The combustion
chamber is heated by the gas burner operation and
releases its heat to the air flowing past. The air heated
in this manner is blown out of the front side
of the unit through an adjustable outlet grid.
Operation of the unit as intended is only possible
with a connected temperature controller, e.g. ATR-10
(accessory).

6

Fans

Safety thermostat(s) with vertical air flow

The switching on of the fans is time-controlled
by the control board, whereby the timing begins with
the switching-on of the main burner.

The delayed switch-on prevents cold air from being
blown into the room.

Switching off the unit

If there is no longer a heat requirement (room
temperature above the adjusted setpoint value),
the control board switches off the burner.
The burner fan runs for the secondary ventilation
of the combustion chamber for a fixed, pre-set time.

The fan(s) likewise run afterwards on a time­controlled basis until the heat exchanger is cooled.
If a new heat requirement should take place during
the follow-up phase, the control board will wait for
the fans to switch off and then proceed with a reset
and begin a new cycle.

CAUTION

Before resetting safety equipment, the cause
of the trigger must be identified and rectified.

NOTE

Safety devices may not be bypassed or disabled
during operation of the unit!

IMPORTANT NOTE!
The interruption of the current supply during burning
operation or in the follow-up cooling phase is not
permitted, because lack of a secondary ventilation
of the heat exchanger can lead to significant damage:

A safety thermostat (STB) is installed on the units
for each fan, for manual resetting.
If the safety thermostats are triggered then a safety
shutdown is also triggered.
The thermostat is installed in the area of the heat
exchanger in order to monitor the temperature
at its output.
The disabling of the unit caused by the triggering
of the safety thermostat is displayed by the error
indicator light on the front of the unit.

NOTE

The model with vertical air flow must be specified
at the time of order placement, because the probe
is not installed as standard.

Air/gas premix

The units are equipped with a burner with complete
air/gas premix.
This mixing process takes place in the fan
of the burner motor. The air suctioned in by
the fan flows through the Ventura tube, where an
underpressure is created, which draws in the gas.
In the process, a constant air/gas mixture is created.
The ratio of air and gas pressure is 1:1.
This value can be changed through the offset
regulating screw found on the gas valve.
The amount of gas is already adjusted upon delivery
of the units and the screw is sealed.
With the adjusting screw located at the Venturi tube,
a fine adjustment can take place, which regulates
the maximum gas flow rate and thus determines
the carbon dioxide (CO2) content of the flue gases
The screw is not sealed in order to enable conversion
of the fan-assisted air heater to another type of gas.

■

Overheating of the unit with the resulting

expiration of the guarantee

■

Damage to the fan of the burner and its

components

■

Tripping of the safety thermostat and the

associated lock-out of the safety thermostat (STB).

Therefore no new unit start without manual

resetting

■

Damage to electrical lines

PLEASE NOTE:
For the offset and CO2 adjustment.

The control board of the units enables the speed
regulation of the burner motor with DC depending
on the heat output required in the space.
By changing the speed the air flow rate and thus
the gas flow rate are changed.
Minimum and maximum speeds of the fan are
two values that cannot be changed.

7

REMKO GPS series

Cycle of operation

The units from the GPS range are fully-automatic hot
air heaters, which are equipped with an electronic
device with self-testing. This guarantees a high degree
of reliability and safety.

Burner operation

The burner is ignited when the following
preconditions are fulfilled:

■

The unit is supplied with power and is not in a fault

shut-down state (lock-out)

■

The gas supply valve is open

■

The toggle switch on the control panel is switched

to the “I=Winter” position

■

The thermostat contact is closed

■

The contact between terminal 34 and 35

on the GPS board is closed

Under these conditions, the burner fan starts
immediately. After the pre-flushing process is
complete, the flame is ignited with an ignition
output that is 30 % of the maximum output. After
subsequently waiting for the stabilisation phase to
pass, the burner runs up to maximum output.
If the flame cannot be ignited then 4 further
ignition attempts take place. With the fifth ignition
attempt, the GPS board triggers a fault shut-down.
If the burner ignites, the cooling fan starts up after
30 seconds and conveys the warm air into the room.

Abgase

Flue gases

Air

Luft

Gas

EV1EV2

HW080909

Gas

EVP

In order to switch the hot air heater off, the switch
on the control panel must be set to the “0” position.
It is prohibited to switch off the unit by disconnecting
the power supply. This process must be used
exclusively in emergencies. With an instructed switch­off of the hot air heater, the burner fan continues
to operate for a further 90 seconds, in order to flush
the burner chamber of flue gases. The cooling fan
runs on for 120 seconds after the switch-off, to
ensure that the heat exchanger “cool down” takes
place. If the cool down process is not completed then
this reduces the service life of the heat exchanger and
therefore also invalidates the guarantee. Furthermore,
the safety thermostat may also be triggered and
necessitate a manual reset.
If, during the cool down phase, a new heating request
is issued then the unit waits until the cooling fan has
switched off, performs a reset and then starts a new
heating cycle.

Efficiency

The advantages of the units lie in the 2-stage mode
of operation, meaning the heat output created and
thus the gas flow (consumption of fuel) are changed
corresponding to the heating stage.
With a reduced heat requirement of the room,
the fan-assisted heater consumes less fuel, whereby
its efficiency is increased by up to 94%.

Intrinsic safety:
The increase in efficiency with minimum output is
achieved through the use of a modern air/gas mixture
technology and the simultaneous flow rate regulation
of combustion air and gas.
This technology increases the safety of the unit,
because the gas valve feeds the fuel depending on
the amount of air in accordance with its factory
settings.
Unlike atmospheric burners, the CO2 content
remains the same through the entire operating range
and allows an increase in efficiency with reduction
of the heat output.
With no combustion air, the valve does not release
gas.
With reduction of the combustion air, the gas valve
automatically reduces the amount of gas and keeps
the combustion parameters at an optimal level.

8

Modulation

The gas wall heaters are units with 2-stage gas burner
modulation, whereby outputs between the minimum
and maximum settings are possible during operation.
The highest output serves for raising the room
temperature quickly when switching on the units.
The second stage enables a slower heat-up speed
of the space, which means that the burner is required
to switch on and off less often. Furthermore, the air is
heated less heavily due to the lower heat output,
which limits the physical emergence of layer formation
(tendency of the warm to rise).
These results can only be achieved through a precise
monitoring of the climactic spatial conditions and an
optimal control of the unit.
With the dimensioning of heating systems with
fan-assisted air heaters, it is important to observe
the number of hourly air renewals.
In this regard, please note the following: Gas wall
heaters should, in general, be arranged so that the air
flow rate ensures air recirculation at least twice hourly,
even if this would not be necessary for the heat
output.

Minimal pollutant emissions:

The premix burner provides for "clean" burning with
low pollutant emissions with the air/gas valve.

9

REMKO GPS series

General notes

Control panel

The hot air heaters from the GPS series are fitted as
standard with a control panel on the front of the unit.
All unit information or fault indications are displayed
on this control panel.

RED LED

GREEN LED

Toggle switch

Z Summer / d Winter

Reset key

The illumination of the green LED means that
the unit is connected to the mains.
The illumination of the red LED indicates
a malfunction of the unit.
Using the malfunction diagnostics, the cause
of the malfunction can be identified by the different
types of flashing signals of the red LED.

Summer/winter toggle switch

Also, a manually-operated toggle switch d / 0 / Z
is installed on the front of the unit, which enables
switching the unit from winter operation d to summer
mode Z (continuous ventilation).
In the central position [0] all unit functions are
switched off.

Safety thermostat

The GPS unit series is equipped with a safety
thermostat with automatic reset function and positive
safety device as standard. This means that the safety
equipment also triggers with a breakage.
If the thermostat is tripped, the burner is stopped
via the flame monitoring unit and a subsequent
fault shut-down of the flame monitoring unit is
triggered. The thermostat probe is located behind
the top outflow fins, in the centre of the housing.
The fault shut-down is displayed on the control panel
by the red indicator light.
Because this is a safety-relevant error, the fault shut­down is permanent and requires a manual reset.

High or low flame

The units are serially equipped with a room
temperature probe NTC1 on the rear side of the unit
so that the intake temperature of the fans is
monitored. The operation of the two stages takes
place depending on the temperature value measured
by the probe compared to the value set inside
the thermostat housing. The thermostat can be
set to the desired temperature value via a screw.
This value should be set a few degrees above
the desired room temperature. If the temperature rises
above the set value then the burner is set at a lower
flame, which reduces the heat output. In this way
the air blown into the room is heated less heavily.
However, the thermostat for controlling the high
or low flame is by no means a replacement for a room
thermostat, which must be installed in all instances.

Reset key

A manually-actuated reset key is installed on the front
of the unit, which enables the unlocking of the unit
after the malfunctions F1, F2, F5, F6 or F8.

CAUTION

Before resetting safety equipment, the cause
of the trigger must be identified and rectified.

10

The optimisation of the temperature value must take
place during operation of the system and depends on
the distance of the fan-assisted air heater to the floor
and the required temperature conditions. The gas wall
heater is normally installed at a distance of 2.5 - 4 m
from the floor.

The desired comfortable temperature should be
reached and maintained with this. However, it is
necessary to ensure that the units are operated with
the lowest necessary temperature value, in order
to maintain these conditions. The thermostat is set
to 20°C in the factory. This value enables a mid­level installation range between 3 and 5 metres with
room temperatures between 17 and 19°C (see graph
below).

F2

- Tripping of the safety thermostat.
If the temperature detected by the thermostat
is too high, it disconnects and disables
the operation of the unit.

F5

- Burner fan defective;
Combustion air fan is defective or the signal to
the control board lies beyond the tolerance range
of the desired speed.

NOTE

Set the temperature on the internal thermostat
at least 2 K above the desired room temperature.

Malfunction diagnostics

With a malfunction, the red alarm light illuminates
constantly on the control panel.
To cancel the malfunction, it is necessary to press
the reset key for longer than 1 second.
If the malfunction is still present after the reset,
please do not attempt a reset more than three times
and contact customer service to arrange a repair.
To activate diagnostics, it is necessary to press
the reset key for longer than 5 seconds. The red
light will start to flash. The error number can now be
determined on the basis of the number of flashing
signals. The flash sequence is repeated and displayed
with a pause of 2 seconds between each repetition.

F1

- LED flashes once quickly

F2

- LED flashes twice quickly

F6

- Combustion air fan is defective or the signal
to the control board lies beyond the tolerance
range of the desired speed.

F8

- The control board has identified an undesired
response.

The malfunctions F1 and F2 are caused by safety
devices and therefore are permanent:
The malfunction persists when switching off and
restarting the mains voltage and can only be unlocked
manually.

CAUTION

Before resetting safety equipment, the cause
of the trigger must be identified and rectified.

NOTE

Safety devices may not be bypassed or disabled
during operation of the unit!

F5

- LED flashes five times quickly

F6

- LED flashes six times quickly

F8

- LED flashes eight times quickly

Types of malfunction

The malfunctions (lock-outs) displayed and saved
by the control board have the following causes:

F1

- Malfunction of the flame monitoring unit
because of unsuccessful ignition of the
burner; the control board arranges for a series
of automatic deactivation attempts prior
to reporting the malfunction.

Fin alignment

Before switching the unit on, open the fins at least
45°, in order to avoid overheating the combustion
chamber.

11

REMKO GPS series

Intended use

The units are designed exclusively for heating and
ventilation purposes in industrial or commercial
use (no living space heating) on the basis of their
structural design and equipment.

The unit design allows for the use of the unit
accessories approved by the manufacturer.

The units must only be operated by appropriately
instructed personnel.

With non-observance of the manufacturer's
specifications, the respective local legal requirements
or after arbitrary alterations to the units,
the manufacturer shall not be liable for resulting
damages.

Any improper use of the units is prohibited.
The units must be installed by a qualified technician,
who is responsible for the observance of the existing
regulations, rules and guidelines.

Environmental protection
and recycling

Disposing of packaging

When disposing of packaging material, please
consider our environment.
Our units are carefully packed and delivered in stable
transport packaging and, if applicable, on a wooden
pallet.
The packaging materials are environmentally-friendly
and can be recycled.
By recycling packaging materials, you make a
valuable contribution to the reduction of waste and
conservation of raw materials.

Therefore, only dispose of packaging material at
appropriate collection points.

Disposal of the old unit

The manufacturing process for the units is subject
to continuous quality control.

Only high-grade materials are processed, the majority
of which are recyclable.

NOTE

Operation other than the types listed
in this operating manual is prohibited.
With non-observance, any liability and claim
to guarantee expire.

Customer service and
Guarantee

As a prerequisite for any guarantee claims to
be considered, it is essential that the ordering
party or their representative complete and return
the "certificate of guarantee" to REMKO GmbH &
Co. KG at the time when the units are purchased and
commissioned.
The units are tested several times to verify their
correct function. However, if malfunctions should
arise that cannot be remedied by the operator with
the assistance of the troubleshooting section, please
contact your specialist dealer or contractual partner.

CAUTION

Copyright
The redistribution, even in part, or the use of
this documentation for purposes other than
intended is strictly prohibited without the written
authorisation of

12

REMKO GmbH & Co. KG

.

You also contribute to environmental protection
by ensuring that your old equipment is only disposed
of in an environmentally-friendly manner.

Therefore, only bring the old unit to an authorised
recycling business or to an appropriate collection
point

.

Transport and handling

The units from the GPS range are supplied fastened
to a wooden pallet and covered with suitable
stable cardboard packaging. Suitable transport
vehicles, capable of bearing the load, must be used
to transport the units. All transport work must be
performed by experienced personnel, who are familiar
with the applicable health and safety regulations.
The unit can be unpacked once it has been
transported to the installation site.

Installation

The following instructions for installation and set-up
of the units are intended exclusively for authorised
technicians.
All safety notes must be observed without fail.

General information

Normally the units can be installed directly
in the room to be heated.
With the installation of the units, the local and
country-specific regulations (LBO) and combustion
plant order (FeuVO) of the respective state must
be observed.
The first enactment of the (German) Federal
Emission Control Act (1st BlmSchG) and the
statutory provisions of the ordinance governing
small combustion plants (1st BlmSchV) must also
be applied.

The installation of fan-assisted heaters operated
with gas burners is prohibited in the following spaces:

■

In public function rooms or in rooms with

a concentration of people greater than 0.4 per
square metre

Ventilation openings

The rooms where gas-powered units are operated
must have one or more permanent openings
(windows or doors).

These openings must be arranged in the following
places:

- directly below the ceiling with gases with a density
less than 0.8

- directly above the floor with gases with a density
greater than or equal to 0.8.

The openings must be arranged on exterior walls
in open air. For the size of the cross-section,
the installed heat output is authoritative.

Installation instructions

The minimum height and clearance of the fan-assisted
heater from the walls and floor can be gathered from
the drawing below.

The minimum clearances are the necessary distances
for maintenance. All measurements are given in mm.
The height [2500 mm] corresponds to the minimum
height indicated for "Hanging units" by the
guidelines.

■

In rooms where gas or dust can accumulate

through the processing that takes place there or
through the materials stored there, which could
lead to fire or explosion

So that no dangerously high temperatures are
reached, the distance between the exterior surface
of the unit and flue gas pipe and any accumulated
flammable material must be no less than 1.5 m,
with a ground clearance of 2.5 m or greater.

Units with gas burners for gas with a density greater
than 0.8 (liquid gas, propane, butane) may only
be installed in rooms where the floor does not lie
below ground level. Rooms must have one or more
permanent openings (windows or doors).

Two different types of brackets are available
for the installation as accessories:

Fixed and pivoting.

NOTE

Ensure sufficient distance between fan and wall
(unhindered air flow).

4002500

200 1000

13

REMKO GPS series

Permanent wall installation

Align the wall brackets in a suitable place on the wall
(spirit level) and securely fasten.
Mark the boreholes to be made with a pencil.

- Securely attach the wall brackets with suitable
anchors and screws - M10 or greater.

NOTE

Make sure that the type of anchor and size
of the screws are appropriate for the type of
masonry, in order to bear the weight of the unit.

90

- Install the two bracket pairs with the supplied
material as shown in the figure

- When installing the brackets, lock the nuts with
a locking ring between the bracket and nut.

Brackets for wall installation (standard design) EDP
no.: 228780 GPS 15 - 75

- Position the unit on the brackets so that the holes
of the unit line up with those of the brackets,
whereby the corners of the brackets must be flush
with the front edge of the unit.

- Fasten the units with the M8 screws provided;
in the process, insert a locking ring between
the screw and bracket.

225225

560

Model Distance B

GPS 15 719 mm

GPS 25 719 mm

GPS 35 910 mm

GPS 55 910 mm

GPS 75 1241 mm

The unit should be affixed “decoupled”.

The units may only be mounted on stable walls,
ceilings or structures made of non-flammable
construction materials with sufficient bearing

capacity.

The wall console must be affixed securely using
screws and wall plugs in accordance with the
customer’s type of wall and the unit weight.

ø12

Distance B

Abstand B

Distance between the wall brackets

CAUTION

s

s

s

14

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Pivoting wall installation

The instructions for installation of the pivoting
brackets are included with the packaging.
The use of pivoting brackets is appropriate for the
following cases:

a) Installation of the unit in a corner

b) Installation of the unit at a right angle to the wall it

is mounted on

c) Installation of the unit on a column

NOTE

The brackets must be connected to the unit and
the wall in a de-energised state.

CAUTION

The units may only be mounted on stable walls,
ceilings or structures made of non-flammable
construction materials with sufficient bearing

capacity.

The wall console must be affixed securely using
screws and wall plugs in accordance with the
customer’s type of wall and the unit weight.

The order numbers for the pivoting wall installation
are:

EDP no.: 228781 for GPS 15 / 25

EDP no.: 228782 for GPS 35 / 55

EDP no.: 228783 for GPS 75

The spider must be
mounted

with the flush
socket side below the
unit’s

base.

The bracket must be
screwed to the

wall so

that it is free of tension.

8080

Ø12

220

115

The unit should be
affixed “decoupled”.

After the unit has been
aligned finally, use the
enclosed threaded pin
to secure

the spider.

A counterplate must be
used if necessary.

The fastening holes are
the same for all bracket
sizes.

15

REMKO GPS series

Hanging from the ceiling

The accessory assembly kit ceiling suspension,
with 4 universal suspension brackets, is available
for installation as a suspended unit.
When fastening to the ceiling with chains or ropes
provided by the customer, use appropriate fastening
materials that are suitable for the weight of the unit.

A

Vertical air flow

If installation with a vertical air flow is intended,
this should be specified during the order phase.
An additional thermostat is installed on the fan for this.

CAUTION

Installation as a suspended unit with verti­cal air flow can lead to damage and the failure
of the unit without the fan thermostat.

B

Detailed view A:
Horizontal air flow

NOTE:
Small guide holes are provided for correct
arrangement of the suspension brackets. These
must be aligned at the top edge of the unit. Refer
to corresponding figure here. With a vertical unit
installation (only possible with the GPS series),
a fan thermostat must be additionally installed.

Detailed view B:
Vertical air flow

16

Flue gas connection

The units work with a closed combustion cycle.
The fan is located in front of the heat exchanger.

The flue gas evacuation and/or combustion air
supply must be planned and executed in observance
of the respective local guidelines.
In addition, installation on outside walls must be
coordinated with the responsible district master
sweep.
The classification of the different installation versions
takes place pursuant to the European Standard EN
1020 and/or DVGW-TRGI Directive 2008 and is a
component of the EC authorisation in the factory­supplied design.

Individually, the units are classified for the following
versions:

B23/C13/C33/C43/C53/C63

The installation of the flue gas and supply air duct can
take place in different ways.

e.g. Gas fireplace type B:

The combustion cycle is not sealed compared
to the environment in which it has been installed.
The combustion air is taken directly from the
installation space.

Installing the end pieces

The warm air heaters from the GPS range are
equipped in the rear and top section of the burner
box with openings for the extraction and flue gas
pipe. Depending on which type of installation has
been selected, it is possible to fit or relocate the end
pieces at the rear or top.
The end pieces are mounted on the rear side
of the unit in the factory. If top openings should be
required then the connections must be detached from
the rear side and the cover and seal unscrewed from
the top openings. Now screw the 90° bend inside
the burner box, in the respective direction. Insert
the end pieces in the desired position and screw
the cover and seals into the seats that are not used.
Make sure that the seal is guaranteed on the burner
box and in particular on the flue gas pipe.

Fitting the end piece seals

The scope of supply includes two seals to seal
the end pieces with the flue gas pipe and fresh air line.
These are fitted on the end pieces of the GPS units for
correct sealing.

This version may only be installed in rooms that have
at least one door or window that can be opened
to the outside and have a volume of at least 4 m³
per kW total nominal heat output of the unit; or a
combustion air opening of at least 150 cm² leading
outside or two openings that have a clear cross­section of at least 75 cm² each.

e.g. Gas fireplace type C:

The combustion cycle is sealed compared
to the environment in which it is installed.
The combustion air is fed from outside.

The units may only be operated with appropriate flue
gas pipes.
The factory components available as serial accessories
correspond to all requirements.

CAUTION

The use of plastic flue gas pipe is not permitted.

NOTE

The installer of the exhaust system is obliged to

CAUTION

If the end piece seals are not used then there is a
high risk that flue gases will be fed into the room
to be heated.

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

complete the system identification (name plate)
enclosed with the exhaust system in accordance
with applicable standards and visibly attach it to the
exhaust system.

17

REMKO GPS series

Condensate water

With long pipes condensate can form, because
the temperature of the flue gas drops below
the condensation temperature. This must be
prevented through the following measures:

■

Through heat insulation of the flue gas pipes

■

Through the use of condensate water traps, where

the collected condensate is drained from the flue
gas pipe.

Note:

Appropriate condensate traps are available as
accessories.
They can be used with both horizontal and vertical
pipework.

Guide to selection

If the flue gas end piece is not connected directly
to the unit, but rather longer flue gas sections must
be overcome, ensure - according to the tot. length
and geometry of the flue gas routing - that the end
and extension pieces, as well as the elbows, exhibit
the correct diameter.

After fastening the flue gas routing, the pressure loss
for the respective unit must be determined.

The pressure loss is different with each unit, because
the flue gas flow rate depends on the output.

Add up the determined pressure losses
of the individual flue gas components and make sure
that the sum total does not exceed the value available
for the unit type to be used.

Note:

With the internal installation of coaxial tubes,
a maximum tube length of 3 m is permitted.
The end piece of the flue gas pipe must be installed
in accordance with the relevant national guidelines.

If there is a combustion air supply duct, the pressure
losses must be added to those of the flue gas pipe.

If the sum total of the pressure losses lies above
the available unit pressure, flue gas and fresh air pipes
with a larger diameter must be used. The calculation
must be performed once more for this.

NOTE

Exceeding the permissible pressure losses
in the pipework reduces the heat output and safe
operation of the unit.

The maximum possible duct lengths between the unit
and end piece are shown in the table.

When using flue gas elbows, it is necessary to take
the respective pressure losses into consideration.

Examples of pressure losses:

A 90° elbow with Ø 80
equates to 1.8 m straight pipe length

A 45° elbow with Ø 80
equates to 0.8 m straight pipe length

A 90° elbow with Ø 100
equates to 2.3 m straight pipe length

A 45° elbow with Ø 100
equates to 1.0 m straight pipe length

Examples for the design of flue gas pipe and
combustion air ductwork are represented on
the following pages.

Individually, the units are classified for
the installation versions

B23/C13/C33/C43/C53/C63

18

CAUTION

Installation work may only be carried out by
authorised qualified technicians.

Installation examples

Gas fireplace type B23

Room-air-dependent combustion system.

Type B23 horizontal through the outside wall.

The combustion cycle is not sealed compared
to the environment in which it has been installed.
The combustion air is taken directly from the
installation space.
The guidance of the flue gas can take place in two
variants:

a) with the aid of horizontal ductwork (outside wall

installation) straight through the outside wall
or

b) with a vertical duct through the roof, if the ceiling

is also the roof.

With these installation variants, sufficient ventilation
of the installation space must be ensured in order
to guarantee the correct supply of combustion air.
This takes place through openings in the walls of
the room.
The dimensions and characteristics determined
in thestandards must be adhered to.
In particular, DVGW-TRGI 2008 Sec. 5.2.2 and TRF
Sec. 7.2.2. should also be observed.

750 mm

L1

S

2.5 - 3.5 m

Mounting height

Type B23 horizontal

The combustion air supply must be made from
the outside as a basic rule:

■

With mechanical suction plants in the installation

space

■

If over or underpressure can occur in the installation

space

■

If the unit is installed in environments with large

amounts of dust

■

In operations working with motor vehicles

L1 maximum duct length without end pieces

Pipe ø 80

Model Metres

GPS 15 30

GPS 25 30

GPS 35 30

GPS 55 25

GPS 75 10

CAUTION

In this version a protection grid should be
affixed on the combustion air supply duct
so that the penetration of solid objects with
a diameter greater than 12 mm is prevented.

Protection grid [S] for combustion air intake

GPS 15 - 75; EDP no.: 228960

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

19

REMKO GPS series

Type B23 vertical through the ceiling.

L1

S

Gas fireplace type C

Room-air-independent combustion system.
The combustion cycle is sealed compared
to the environment in which it is installed.
The combustion air is fed from outside.
The ductwork runs horizontally through the outside
wall or vertically through the roof.

NOTE

According to Section 4-1-2 of the FeuVO (German
Fire Ordinance), only fireplaces that are self-con­tained from indoor air may be operated in garages.

Type C13

Room-air-independent combustion system.
Exhaust/ and combustion air are led through an LAS
end piece through the outside wall.

750 mm

K

L1

2.5 - 3.5 m

Mounting height

Type B23 vertical

L1 maximum duct length without end pieces

Pipe ø 80

Model Metres

GPS 15 30

GPS 25 30

GPS 35 30

GPS 55 25

GPS 75 10

NOTE

Condensate drainage connection [K] = M 20 external thread

L2

2,5 - 3,5 m

Installation height

Type C13 horizontal / coaxial

L1 + L2 maximum duct length without end pieces

Pipe ø 80 Pipe ø 100

Model Metres

GPS 15 30 + 30 -

GPS 25 30 + 30 -

GPS 35 20 + 20 -

GPS 55 8 + 8 20 + 20

GPS 75 2 + 2 10 + 10

Flue gas and fresh air adapter piece Ø80 to Ø100

GPS 55-75; EDP no.: 228916

20

Type C33

Room-air-independent combustion system.
Exhaust/ and combustion air are led through an LAS
end piece through the roof.

Schematic

side view

Schematic
front view

2.5 - 3.5 m

Mounting height

L1

L2

L2

2.5 - 3.5 m

Mounting height

L1

KO

NOTE

In this version the position of the connections to
the unit must be changed, meaning they must be

Type C33 vertical / coaxial

repositioned from behind to above.

is executed at the factory and must be indicated

L1 + L2 maximum duct length without end pieces

Pipe ø 80 Pipe ø 100

Model Metres

GPS 15 30 + 30 -

GPS 25 30 + 30 -

GPS 35 20 + 20 -

GPS 55 5 + 5 20 + 20

GPS 75 1 + 1 10 + 10

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

when ordering.

NOTE

Condensate drainage connection [KO] = M 30 external thread

NOTE

The installation of the exhaust gas routeing
through the outside wall must correspond
to the regulations of DVGW - TRGI and
TRF as a basic rule and must be approved
by the responsible district master sweep.

This variant

21

REMKO GPS series

Electrical wiring

The electrical connection of the unit may only be carried
out by authorised technicians (electrical power company­approved) in accordance with the applicable regulations.
A main/emergency shut-off switch should be installed in
an easily accessible position on the visible side of the unit
and protected against unintended actuation. The switch
must disconnect all poles of the unit with a minimum
contact opening of 3 mm from the power supply.

CAUTION

A multi-polar isolator with appropriate electrical
protection must be connected upstream to
the units.
The wire cross-section must be at least 1.5 mm².

The units must be connected to the power supply
protected against polarity reversal.
Power supply 230V/50Hz,
Minimum cross-section of the power supply 1.5 mm².

Connection of room thermostat and remote control

The hot air heaters from the GPS series must always
be connected to a thermostat, a timer or a room
temperature controller, so that the user can switch
the unit on and off. The operator or installer is
required to install the unit circuitry in the room.
If multiple switches serve to switch off the burner,
these must be connected in series.

CAUTION

The main/emergency shut-off switch may only
be used in emergency situations or with extended
periods of non-use.
If it is switched off during the operation of
the unit, the electrical supply-air fan cannot
cool the combustion chamber. This can result
in damage to the unit.









Rear panel legend:

 = Unit power outlet
 = Unit plug
= Cable guides
 = Unit temperature probe

NOTE

Phase and neutral lines must not be interchanged
during connection, because the flame monitoring
device will otherwise interrupt unit operation for
safety reasons.

Alarm F1 is displayed.

R

NO!

YES

R = Controller cable
S = Live cable

S

22

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

KF-30 connection RR-30 connection

The cabled remote control KF-30 is a simple control
for the GPS unit range and has the following
functions:

■

On / off switch

■

A summer / winter selector switch

■

A RESET key with error indicator light

The remote control is connected to the screw
terminals of the GPS board in accordance
with the wiring diagram.

NOTE

If a remote control is connected to the unit then
the selector switch on the front control panel
of the unit must always be set to “winter”.

The room temperature controller RR-30 is
electronically controlled and is designed for simple
and convenient regulation of the room temperature.
It offers the following functions:

■

Heating / off / ventilation selector switch

■

Adjustment wheel for the room temperature

■

Operating message light

■

RESET key

The remote control is connected to the screw
terminals of the GPS board in accordance with
the wiring diagram.

107 98 1714 1615

11 12

6
5

4

3
2

1

42
41

373839

GPS board

3136 3534 3233

30

26 18

22 211920

2429282725

23

6
5

4

3
2

1

42
41

373839

GPS board

107 98 1714 1615

3136 3534 3233

30

11 12

26 18

22 211920

2429282725

23

Do not connect cable with
the number 1 and isolate

43256

Ventilate

Heating

I/0

1

Cable number

RESET

43256

3 5 7 8 10 9

Ventilate

Heating

0

1

Cable number

Terminal number

RESET

TA

RR-30KF-30

23

REMKO GPS series

Connecting the ATR-10 for a GPS unit

The ATR-10 electronic temperature controller
is designed for convenient regulation of the room
temperature. It offers the following functions:

■

Heating / off / ventilation function buttons

■

Electronically adjustable room temperature

■

Electronically adjustable weekly timer

■

Operating message indicators

■

Malfunction message

■

RESET button combination

The remote control is connected to the screw
terminals of the GPS board in accordance with
the wiring diagram. Observe the ATR-10 operating
manual to ensure fault-free operation.

GPS unit

107 98 1714 1615

11 12

GPS group operation using the ATR-10

The ATR-10 electronic temperature controller is
suitable for group operation of GPS units. One RP-10
is required per GPS unit for isolated unit switching.
Observe the ATR-10 operating manual to ensure
fault-free group operation.

RP-10 relay board

GPS 15-75; EDP no.: 1011368

NOTE

The cable lengths between the ATR-10
temperature controller and the GPS board may
not exceed 8 metres. Avoid doorbell/telephone
cables!

6
5

4

3
2

1

42
41

373839

5

6

GPS board

3136 3534 3233

1

34

2

30

26 18

22 211920

2429282725

23

ATR-10

A1 A2

123 4

NC NO

T2 P1 S1

Ö1

P2 S2

5

Ö2

P3

S3

63

Ö3

N

PE L

Set selection

switch to NC

24

Temperature probe

L
PE

N

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Electrical wiring diagram

TW1STB1

BLACK
BLACK

GREEN
GREEN

RED

YELLOW

BLACK

WHITE

17
16

15
14

12
11

10

9
8
7

BROWN
BLUE

GPS board

6

3412

42541

18
19
20
21
22
23

24
25
26
27
28
29
30

31
32
33

34
35
36

BROWN

BLACK

BLUE

BROWN
BLUE

GREEN
WHITE
RED
BLUE
ORANGE

GREEN
BLACK
BROWN

LV1

X1 X2

X1 X2

13

14

TA

13 14

EV2

EV1

EVP

RS1

2423

N

L

PE

VAG

Burner fan

L

GPS 15

N

PE

GPS 75

435

24 V

HALL

EXPLANATION OF SYMBOLS

ACC Ignition electrode
E/O/I Main switch
EV1 - First GAS solenoid valve
EV2 GAS main solenoid valve
EVP GAS ignition valve
IONO Flame detection electrode
LR1 Unlocking indication
LV1 Supply indication
NTC1 Temperature sensor
P1 Connector plug/socket
RS1 Unlocking key
STB Safety thermostat
TW1 High / Low thermostat in the unit
VAG Burner fan

1

2

PWM

0 V

IONO

GREY

L

N

RED

PE

TRANSF.

ACC

BLUE

BROWN

ACC

BLUE

230 VAC

BLUE

BROWN

BROWN

C1-N

C1-PE

C1-L

E/0/I

Fan2. Fan

with GPS 75

P1

25

REMKO GPS series

Gas connection

The installation of the gas connection may only
be executed by authorised technicians (authorised
by the municipal gas supplier) in observance of
the applicable provisions for the respective gas type.
The cross-section of the ductwork should be
determined according to the connection value
of the unit, the total output resistance as well
as the amount of gas supply pressure.
The necessary gas supply pressure (depending on gas
type) should be ensured by the customer.
The necessary amount of gas and the necessary
gas pressure must be continuously available during
operation of the unit according to its output.
The unit connection takes place through an R 3/4“
external thread connection.
The gas supply should be executed with a suitable,
removable screw connection free of voltage and
vibration.
The components described in the applicable gas
guidelines as well as the locally required components
in the gas supply, such as gas pressure regulators,
isolation devices, etc., are not included in the scope of
delivery and must be provided by the customer.
Installing a high-output compatible gas filter without
pressure regulator is also recommended, because
the filter area of the serial filter installed above the gas
valve is limited.
The applicable standards allow a maximum pressure
of 60 mbar in the heating room; higher pressure
values must be reduced prior to entrance to
the heating or installation room of the unit.

Prior to the initial commissioning, the gas supply
line must be thoroughly cleaned and bled through
appropriate measures.
It must be ensured that the connection of the unit to
the gas supply line is executed gas-tight.
All screw connections of the unit and the gas supply
must be inspected for leakage integrity.
If leak detection sprays are used, these must
correspond to DIN 30657 (corrosion-free).

CAUTION

Installation work on the gas system and
the supply lines may only be conducted
by licensed technicians.

LEGEND

1 = Electrical gas solenoid valve main burner

2 = Electrical gas solenoid valve ignition burner

3 = Pressure regulator

4 = Electrical gas safety valve

5 = Gas filter (small filter area)

6 = Vibration-inhibiting connection piece (provided

by the customer)

7 = Gas filter with large filter area (provided

by the customer)

8 = Gas stopcock (provided by the customer)

26

Schematic layout of the factory-supplied gas components

to be executed on-site
by the installation company

1 2 3 4 5 6 7 8

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Commissioning

The initial commissioning may only be carried out
by a contract installation company or the factory
customer service department.
Carry out the following steps prior to the initial
commissioning:

CAUTION

Adjustment and maintenance work on the
unit and gas burner may only be carried out
by authorised and qualified technicians!

1. Inspect all connections and screw connections

of the unit and the gas connections for leakage
integrity.

2. Check all electrical screw and plug connections

within reach.

3. Check the electrical connection for polarity and

the power supply (230V/50Hz).

4. Check whether the unit is properly connected

to aneffective grounding system that corresponds
to the applicable safety standards.
Only then is the electrical safety and function
of the unit guaranteed.

CAUTION

Gas lines must never be used for the grounding
of electrical equipment!

The units are delivered pre-set in the factory
according to the desired type of gas.

1. Loosen the lock screw in the pressure tap of
the burner.
Do not unscrew completely!

2. Connect a suitable pressure measurement device,
e.g. U-pipe pressure gauge, min. resolution 0.1
mbar.

3. Open the gas shut-off devices.

4. Switch on the main/emergency switch.

5. Set the mode selector switch on the front side
of unit to the “winter” setting.

6. Switch on the room thermostat or press the remote
control switch.

7. Set the heat requirement temperature higher than
the temperature measured by the room thermostat
or the temperature controller (omitted with KF-30).

If the conditions are fulfilled and the unit is not
blocked, pre-ventilation of the combustion chamber
starts, followed by ignition of the burner. The cooling
fan subsequently starts.

It is possible that the ignition burner does not ignite
with the initial commissioning, because there is still air
in the gas line, whereby the unit triggers a malfunction.
The unit must be unlocked and the starting procedure
repeated.

CAUTION

A functional inspection of the entire unit
including leak testing of all gas-conveying
connections must be conducted.

It must be ensured that a gas supply pressure
that conforms to standards is continuously present
in accordance with the locally available gas type.
The gas of the network must be consistent with
the gas category to which the unit is adjusted.

For commissioning of the burner, proceed as follows:

Combustion analysis

Start the unit and make sure that the pressure
at the valve intake corresponds with the prescribed
value. Otherwise adjust.

After approx. two minutes connect a flue gas
analytical device to the flue gas pipe and read
the CO2 value.

Compare this value to the information in the table
"Gas settings" for the type of gas in use.

s

s

s

27

REMKO GPS series

s

s

s

If the value lies outside the indicated range, make
adjustments with the CO2 regulating screw at
the Venturi tube.

- When tightening, the gas flow rate is reduced and
the CO2 value along with it

- When loosening, the CO2 value increases.

Then set the burner to "minimum output" by setting
the internal thermostat to a low temperature.

Wait until the minimum output at the burner has
stabilised and check that the CO2 value is the same
or slightly below the CO2 value of the high flow rate
(up to -0.3%).

With deviating values, use the offset screw.
To change the values, pull out the metal plug and use
the regulating screw:

- When loosening, the CO2 value is reduced.

- When tightening, it increases.

After any changes to the offset regulation, the CO2
value at the high output must be checked again
through the steps indicated above.

After these steps, set the temperature on the internal
thermostat back to the desired room temperature
value.

After completion of all steps for the initial
commissioning, the user is instructed on the use
of the unit and its controller.

CAUTION

The inlet of the Venturi tube may in no case
be covered with your hands or other objects.
This can lead to flashback of the premix burner.

Offset regulation

Gas input pressure

tap (IN)

OFFSET pressure

tap (Pascal)

CO

regulating screw

2

Calibrated

Venturi tube

CAUTION

If the unit should not be used for extended
periods of time, the gas cocks must be closed and
the main switch of the unit must be switched off.

NOTE

The unit always conducts follow-up ventilation
prior to switching off the fans.

NOTE

If the unit is not set to "Normal" operation,
thecontrol board automatically resets the unit
after 20 minutes.

28

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Maintenance

In order to preserve the performance and a long
service life of the units, a number of mandatory
checks must be carried out once yearly and in each
case prior to the beginning of the heating season:

1) Check condition of the ignition and monitoring
electrodes as well as the ignition gas burner.

2) Check condition of the supply and flue gas lines
as well as the end pieces.

3) Inspect Venturi tube for dirt.

4) Inspect heat exchanger for dirt.

5) Check gas pressure at the inlet to the gas valve.

6) Check function of the flame monitoring unit.

7) Check of the safety thermostat(s).

8) Check of the ionisation current (>2 microamperes).

NOTE

With steps 1, 2, 3 and 4 the power and gas supply
to the unit must always be interrupted. Steps 5, 6,
7 and 8 take place in the unit heating mode.

1) Checks of the electrodes

Completely disassemble the ignition burner and clean
gas system and gas nozzle with compressed air.
Check the ceramic of the electrodes for integrity.
Carefully remove any oxidation accumulation on
the metal part of the electrodes with very fine emery
paper.
Check electrodes for their positioning according
to instructions (see figure).

Z

IO

It is important that the monitoring electrode [IO] lies
tangential to the ignition burner head and not within
it.
The ignition electrode [Z] must discharge to
the outside edge of the ignition burner at an
appropriate distance to the monitoring electrode.

Z

IO

2) Checks of the flue gas and supply air lines

Carry out a visual inspection of the condition of all
lines and connectors. Remove any accumulation of
dirt that has formed on the end piece of the supply air
line.

3) Checks and cleaning of the Venturi tube
Remove the dirt at the inlet of the Venturi tube with
a small brush or other suitable tool. Make sure that it
does not fall into the Venturi tube.

4) Inspect heat exchanger and burner for dirt

No deposits collect due to the “clean” burning
in the hot air heaters GPS. Deposits only arise with
“unclean” combustion, which occurs if the gas flow
rate is too high or there is a lack of air. Cleaning
is therefore only necessary in special cases.
If the gas flow rate is too high, this is due to the poor
function of the gas valve.
If it is necessary to clean the burner or heat
exchanger, it is necessary to replace all seals fitted
between the burner and heat exchanger.

5) Check of the gas input pressure

Make sure that the pressure at the inlet to the gas
valve corresponds to the prescribed value for
the respective gas type. This check must be carried
out with the unit switched on at high output.

6) Check of the flame monitoring unit

Close the gas cock in the unit heating mode and make
sure that the alarm F1 occurs. Open the gas cock

2.9 ±0.5

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

again, unlock and wait for the unit to restart.

s

s

s

29

REMKO GPS series

s

s

s

7) Check of the safety thermostat(s)

The check must be carried out in the unit heating
mode.

- Heat up the thermostat probe with a hot air gun
or other suitable means until the alarm F2 is issued.

- Let the thermostat probe cool down and reset
the unit again.

- This check should be carried out on all existing
unit thermostats.

8) Check of the ionisation current

Carry out the inspection with a tester that is capable
of detecting microampere values with DC.

Ionisation

monitoring electrode

Micro

ammeter

µA

- Interrupt power supply to the unit.

- Disconnect cable from the flame monitoring unit and
connect to the minus terminal of the tester.

- Connect a cable from the positive terminal
of the tester to the flame monitoring unit.

- Switch on the unit again and measure the ionisation
current.

The value of the ionisation current must exceed 2
microamperes (µA).

Lower values are a sign of poor positioning, oxidised
electrodes or the presence of a defect.

NOTE

Adjustment and maintenance work may only be
carried out by authorised and qualified technicians.

Flame monitoring

unit

(GPS board)

Replacement of the control board

If it is necessary to replace the control board
of the GPS unit, perform the following steps:

1) Unscrew the screw on the board housing and take
off the housing cover

Housing coverScrew

NOTE

Regular care and maintenance, at the latest after
every heating period, is the basic requirement for
a long service life and malfunction-free operation
of the units.

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

30

2) Undo all plugs and cable terminals of the GPS

board and remove cables

2) Undo all plugs and cable terminals of the GPS
board and remove cables

Ignition transformer

GPS control board

(flame monitoring unit)

Plug connections

3) Press plug connections together and release board

from the plug connections

4) Remove board and insert new board

5) Fasten new board to the housing with plug

connections

6) Insert all plugs and connect the cables to the cable

terminals according to the wiring diagram

The mounting bracket for the STB is behind the front
air fins.

Chimney sweep

The unit must be set as follows for measurement
by the chimney sweep:

1) Set the switch on the control panel to winter.

7) Hook in the housing cover on the right, fold down

and fasten with the screw

Replacement of the STB

In order to replace the STB thermostat, refer
to the following table and the corresponding labelling
on the mounting bracket in the unit.

STB replacement

Model Position

GPS 15 A (STB)

GPS 25 A (STB)

GPS 35 A (STB)

GPS 55 C (STB)

GPS 75 D (STB)

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

2) Set the temperature on the temperature controller
higher than room temperature to trigger a heating
cycle.

3) Also set the internal thermostat for the 2-stage
burner operation higher than the actual room
temperature, to trigger maximum output.

Once the unit has ignited it is possible to take
the measurement approx. every 2 minutes
at a measuring point in the flue gas pipe.

Once the measuring process is complete, bring
the internal thermostat and room temperature
controller back to the previous condition.

31

REMKO GPS series

Replacement of the gas valve and CO2 and offset regulation

Unit with and without temperature controller

With replacement of the gas valve, the CO2 and,
if applicable, the offset value must be adjusted.

It is not advisable to change the offset calibration
because this is set in the factory.

If necessary, perform a combustion analysis.

Start the unit and make sure that the pressure
at the valve intake corresponds with the prescribed
value. Otherwise adjust.

After approx. two minutes connect a flue gas
analytical device to the flue gas pipe and read
the CO2 value.

Compare this value to the information in the table
"Gas settings" for the type of gas in use.

If the value lies outside the indicated range,
make adjustments with the CO2 regulating screw
at the Venturi tube.

value.

After completion of all steps for the initial
commissioning, the user is instructed on the use
of the unit and its controller.

This also happens if the power supply of the unit
isswitched off and then on again.

Offset regulation

OFFSET pressure tap

(Pascal)

CO

regulating screw

2

- When tightening, the gas flow rate is reduced and
the CO2 value along with it

- When loosening, the CO2 value increases

Then set the burner to "minimum output" by setting
the internal thermostat to a low temperature.

Wait until the minimum output at the burner has
stabilised and check that the CO2 value is the same
or slightly below the CO2 value of the high flow rate
(up to -0.3%).

With deviating values, use the offset screw.
To change the values, pull out the metal plug and use
the regulating screw:

- When loosening, the CO2 value is reduced.

- When tightening, it increases.

After any changes to the offset regulation, the CO2
value at the high output must be checked again
through the steps indicated above.

Gas input pressure

tap (IN)

Calibrated

Venturi tube

After these steps, set the temperature on the internal
thermostat back to the desired room temperature

32

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Conversion to liquid gas

The on-site conversion of the gas type may only
be carried out by authorised, qualified technicians.

Prior to the conversion, the country-specific
requirements must be fulfilled.
The kit for conversion from natural gas to liquid gas
is described in the following.

Kit scope:

■

Calibrated diaphragm

■

Ignition flame nozzle

■

Notice sticker "Unit converted to..."

After completion of settings, replace notice
sticker "Unit set to ..." with the supplied sticker
"Unit converted to ...".
Proceed as follows for the conversion:

■

Disconnect power supply of the unit at all poles

If the burner is in operation and working at high
output, check:

1) that the pressure at the inlet to the gas valve
corresponds to the prescribed value for
the respective gas type.

2) that the CO2 content corresponds to the prescribed
values for the gas type.

If the measured value deviates, it must be adjusted
with the CO2 regulating screw.
If it is screwed in, the CO2 value is reduced.
If it is unscrewed, the CO2 value is increased.
Check the leakage integrity of the gas circuit again.

■

Carefully insert the calibrated diaphragm between

gas valve and Venturi tube

■

Carefully replace ignition nozzle

Gas type liquid gas G30 - G31

ø Ignition nozzle ø Gas diaphragm

Model mm

GPS 15 0.51 2.5

GPS 25 0.51 3.9

GPS 35 0.51 4.1

GPS 55 0.51 4.8

GPS 75 0.51 6.3

■

Re-connect the power supply of the unit and

prepare the unit to start

■

Make sure during the ignition process that no gas

emerges at the copper pipe connection to the nozzle

Seal

Calibrated GAS bezel

CAUTION

The fan-assisted heater supplied for operation
with liquid gas is adjusted for the gas G31.
When operating with G30 the CO2 must
be checked and possibly adjusted.

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

NOTE

Adjustment and maintenance work may only be
carried out by authorised and qualified technicians.

33

REMKO GPS series

Troubleshooting

Fault-finding

Operation

Wall-mounted heater

REMKO GPS

Is the expelled air

warm?

NO

Is the

burner running at

maximum

output

YES

Heat output

insufficient

Check whether
the internal controller is
set for the high or low
flame 2 K over the desired
room temperature

YES

NO

YES

Is the burner
switched on?

NO

Does the green

operating light

illuminate

YES

Does the red

error indicator

light illuminate?

NO

Cable OK after

visual inspection?

YES

NO

NO

YES

Check power supply
of the unit

Unit is blocked

Hold the RESET key

down for longer than

5 seconds

Error is displayed on

the basis of a flashing

code

See error number and

error

34

Operation

normal

Operating light

defective

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Board defective

Cable defective

Error number and error

Types of malfunction

F1

F2

Burner does not ignite

Malfunction of the flame monitoring
unit because of unsuccessful ignition of
the burner; the control board arranges for
a series of automatic deactivation attempts
prior to reporting the malfunction

Safety thermostat (STB)

Tripping of the safety thermostat.
If the temperature detected by
the thermostat is too high, it disconnects
and disables the operation of the unit.

• Gassupplynotpresentordefective

• Phaseandneutrallinesswitched

• Earthconductormissingorincorrectlyconnected

• Ignitionelectrodedefectiveorincorrectlyconnected

• Monitoringelectrodedefectiveorincorrectlyconnected

• Flamemonitoringunitdefective

• Ignitionnozzledirtyordimensions

incorrect

• Recirculatingfandefective

• Faultycoolingoftheheatexchanger

• Capillarytubeorprobedefective

• Probepositionmaybetooclosetotheheatexchanger

or incorrect position

• Checksafetythermostatforelectricalconductance

• Sealsdefective,hotuegasesarriveattheprobe

• Note:Theprobeisnotonlysensitiveatthetip,but

along its entire capillary tube length

F5

F6

Burner fan defective

Combustion air fan is defective or
the signal to the control board lies beyond
the tolerance range of the desired speed.

Disruptive flame with start

Disruptive flame was detected by
the flame monitoring unit with the start.

• Lowvoltagecabletotheburnerfandefectiveornot

connected

• Burnerfandefective

• Burnerboarddefective

• Gasvalvesdefective

• Ignitiongasburnerorburnerdefective

• Ignitiongasnozzledefective

• Gaslinesealsdefective

• Flamemonitoringunitdefective

• Monitoringelectrodedefective

• Boarddefective

General defect

F8

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

The control board has identified
an undesired response.

• Cableconnectiondisconnectedordefective

• Boarddefective

• Errorattheburner

35

REMKO GPS series

Unit dimensions

(480)*

* Dimension for the fixed wall bracket

115

Series Dimensions Opening Gas supply

L W H V HB LB IS ID ØG GO GV

GPS 15 795 500 690 145 520 490 395 400 3/4“ 180 255

GPS 25 795 500 690 145 520 490 395 400 3/4“ 180 255

GPS 35 985 500 690 145 520 680 490 495 3/4“ 180 255

GPS 55 985 500 765 145 595 680 490 495 3/4“ 180 255

GPS 75 1310 500 765 145 595 1010 655 660 3/4“ 180 255

Series Horizontal discharge

A F AV TV S

GPS 15 80 80 430 120 155

GPS 25 80 80 430 120 155

GPS 35 80 80 430 120 155

GPS 55 80 80 505 120 155

GPS 75 80 80 505 120 155

A = Supply line

36

F = Flue gas line

Series Vertical discharge

A F AO TO S

GPS 15 80 80 145 120 155

GPS 25 80 80 145 120 155

GPS 35 80 80 145 120 155

GPS 55 80 80 145 120 155

GPS 75 80 80 145 120 155

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Exploded view of the unit

27

6

7

33

30

8

9

32

31

34

28 29 29

When ordering spare parts, please state the EDP no., unit number and type (see name plate)!

35

37

REMKO GPS series

Venturi burner

11

10

17

16

13

14

23

10

15

22

21

25

26

38

24

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

18

19

20

3

4

5

2

39

REMKO GPS series

Spare parts list

No. Designation GPS 15 GPS 25 GPS 35 GPS 55 GPS 75

1 Switch group, compl.
2 F1 fuse 6.3 A
3 Board housing
4 Transformer
5 Flame monitoring unit
6 Indicator light RED (square)
7 Indicator light GREEN (square)
8 Unlock key (RESET)

9 Summer / off / winter toggle switch
10 Ignition gas pipe
11 Ignition burner solenoid valve
12 Gas burner, compl.
13 Burner fan
14 Inspection glass with seal
15 Ignition gas burner, compl.
16 Venturi tube
17 Gas valve
18 Ionisation cable
19 Natural gas ignition nozzle

19a Liquid gas ignition nozzle

20 Ignition cable
21 Ignition electrode
22 Ionisation electrode
23 Burner fan seal
24 Burner flange seal
25 Burner pipe seal
26 Gas lance
27 Air outlet fins
28 Electrical connection bush
29 Cable connections
30 Flue gas connection
31 Closure
32 Air supply connection
33 Door hinge
34 Temperature probe (NTC1)
35 Recirculating fan

Not shown

Not shown

Not shown

Not shown

Not shown

Not shown

Not shown

Safety temperature limiter
Gas valve seal
Gas supply pipe
Gas supply pipe seal
Counter nut
Electrical connection plug
Venturi burner, compl.

On request by providing the serial number

40

When ordering spare parts, please state the EDP no., unit number and type (see name plate)!

Country table of gas types

Country Category Natural gas Pressure LPG Pressure

AT, CH

BE <70 kW

BE >70 kW

CY, MT

DE

DK, FI, GR, SE,
NO, IT, CZ, EE,
LT, SI, AL, MK,
BG, RO, HR, TR

ES, GB, IE, PT, SK

FR

HU

IS

LU

LV

NL

II

2H3B/P

I

2E(S)B,I3P

I

2E(R)B,I3P

I

3B/P

II

2ELL3B/P

II

2H3B/P

II

2H3P

II

2Esi3P

II

2HS3B/P

I

3P

II

2E3P

II

2H3B/P

II

2L3B/P

G20 20 mbar G30/G31 50 mbar

G20/G25 20/25 mbar G31 37 mbar

G20/G25 20/25 mbar G31 37 mbar

G30/G31 30 mbar

G20/G25 20 mbar G30/G31 50 mbar

G20 20 mbar G30/G31

30 mbar

G20 20 mbar G31 37 mbar

G20/G25 20/25 mbar G31 37 mbar

G20/G25.1 25 mbar G30/G31 30 mbar

G31 37 mbar

G20/G25 20 mbar G31 37/50 mbar

G20 20 mbar

G25 25 mbar G30/G31 30 mbar

PL

RU

II

2ELwLs3B/P

II

2H3B/P

G20/G2.350 20/13 mbar G30/G31 37 mbar

G20 20 mbar G30/G31 30 mbar

The initial commissioning may only be conducted by authorised technicians.
The initial commissioning also comprises the combustion analysis, which is mandatory.
The units are permitted in EU countries and outside of the EU for the types of gas listed above.

Gas burner adjustment values / flue gas analysis

Gas type G20 G25 G30 G31

Category according to country of destination (see table above)

Supply pressure [mbar]

20

(min.15-max.25)

25

(min.18-max.30)

30 - 50

(min.25-max.57.5)

30 - 50

(min.25-max.57.5)

Ignition gas nozzle Ø [mm] 0.70 0.70 0.51 0.51

Carbon dioxide CO2 [%]

8.7 ±0.1 (cat.H)

8.7 ±0.1 (cat.E)

8.8 ±0.2 9.9 ±0.4 9.7 ±0.2

Model Ø Gas diaphragm [mm]

GPS 15 3.9 4.4 2.5 2.5

GPS 25 5.7 6.3 3.9 3.9

GPS 35 6.3 7.2 4.1 4.1

GPS 55 7.2 8.1 4.8 4.8

GPS 75 9.7 not necessary 6.3 6.3

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

41

REMKO GPS series

Technical data

Series

Nominal thermal load

Nominal heat capacity P

Minimum capacity P

Nominal airflow volume

Symbol Unit



Q

rated,h



V

kW 16.5 27 34.8 52.2 73.5

H

kW 15 24.6 31.9 48.1 67.5

kW 12.1 20.4 25.8 39.9 56.2

min

m3/h 2,000 2,700 3100 4500 7800

nom

GPS 15 GPS 25 GPS 35 GPS 55 GPS 75

Air temperature increase K 21.5 26.1 29.5 30.5 24.8

Fuel Natural gas or liquid gas

NOx class [EN1020:2009] Cl

CO2 content

1)

% 8.8 ± 0.2

5

CO2 content 2) % 9.9 ± 0.4

Gas connection

4)

Inches G 3/4“ G 3/4“ G 3/4“ G 3/4“ G 3/4“

Gas flow rate (natural gas H) m3/h 1.75 2.86 3.68 5.52 7.78

Gas flow rate (natural gas L) m3/h 2.03 3.32 4.28 6.42 9.04

Gas flow rate (liquid gas) kg/h 1.35 2.21 2.85 4.27 6.01

Flue gas flow 1)

Flue gas flow 2)

kg/h 30 46 61 101 136



Af

kg/h 31 48 62 103 140



Af

Available flue gas pressure Pa 80 100 120 130 140

Exhaust gas temperature, approx. t

°C 204 191 182 187 184

Af

reqd. draft intensity Pa 0

Efficiency at nominal heating capacity

Efficiency at minimum capacity

η

η

Case dissipation factor F

Power consumption of the ignition
flame

P

Nitrogen oxide emissions (Hi) NO

Nitrogen oxide emissions (Hs) NO

Efficiency of heat emission

Room heating annual efficiency

η

η

s,flow

% 81.6 81.2 82.6 82.9 82.6

nom

% 83.8 84.3 84.3 84.8 84.3

pl

% 0 0 0 0 0

env

kW 0 0 0 0 0

ign

mg/

x

kWh
mg/

x

kWh

44 30 30 47 43

40 27 27 42 39

% 93.8 92.2 91.3 90.7 92.6

% 73.6 72.9 72.3 72.2 73.4

s,h

Power supply V/Hz 230/1~/50

Rated current A 0.62 0.86 0.89 1.43 2.14

Rated power consumption kW 0.143 0.197 0.184 0.330 0.493

Max. auxiliary energy consumption el

Min. auxiliary energy consumption el

Auxiliary energy consumption in sb.

el

kW 0.063 0.058 0.074 0.101 0.112

max

kW 0.037 0.033 0.045 0.056 0.061

min

kW 0.005 0.005 0.005 0.005 0.005

sb

42

We reserve the right to modify the dimensions and design as part of the ongoing technical development process.

Series

Symbol Unit

GPS 15 GPS 25 GPS 35 GPS 55 GPS 75

Sound power (Lw) dB(A) 61.4 71.3 67.3 75.7 78.3

Sound pressure level LpA

5)

dB(A) 34 44 40 49 51

Combustion air connection Ø mm 80 80 80 80 80

Flue gas connection Ø mm 80 80 80 80 80

Installation variants Type B23 / B23P / C13 / C33 / C43 / C53 / C63

EC approval No. 0476CQ0451

Weight kg 57 57 67 78 102

1)

Values when burning natural gas.

2)

Values when burning liquid gas.

3)

Values pertain to 15°C 1013mbar.

Gross calorific values Hs in standard condition:

H natural gas 11.48 kWh/m
L natural gas 9.75 kWh/m
Propane gas 28.14 kWh/m
Propane gas 14.00 kWh/kg

3

3

3

REMKO GmbH & Co. KG

Air conditioning and heating technology
Im Seelenkamp 12
32791 Lage

4)

The gas line must be measured on the basis of the length

and route, and not according to the diameter of the unit gas
connection. Connection thread in accordance with ISO 228.

5)

Measured at a distance of 6 m from the unit.

Additional specifications for fresh air and flue
gas ducting

The following applies to all models in the GPS range:
B1 air heating unit: no
C2 air heating unit: no
C4 air heating unit: yes

43

REMKO QUALITY WITH SYSTEMS

Air-Conditioning | Heating | New Energies

REMKO GmbH & Co. KG
Klima- und Wärmetechnik

Im Seelenkamp 12
32791 Lage

Telephone [phone]
Telefax [phone]

E-mail [e-mail]
URL www.remko.de

Hotline within Germany

[phone]

Hotline International

[phone]

We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!