Truma DuoComfort Manual de usuario

Operating instructions Page 2

To be kept in the vehicle!

DuoComfort

Table of Contents

Intended use ...................................................................................... 2

Safety instructions ......................................................................... 3

Operating instructions

Control and display panels ................................................................ 4

Start-up .............................................................................................. 4

Changeover ....................................................................................... 4

Removal status .................................................................................. 5

Changing cylinders ............................................................................ 5

Hose change ..................................................................................... 6

Using only one gas cylinder .............................................................. 6

Checking for leaks in the high-pressure section ............................... 6

Accessories ..................................................................................... 7

Technical data ................................................................................. 7

Symbols used

The unit may only be

installed and repaired by

an expert.

Symbol indicates possible

hazards.

Note containing infor-

mation and tips.

Intended use

Truma DuoComfort is an auto-

matic changeover valve for a

two-cylinder system. It permits

replacement of gas cylinders

without interrupting the gas

supply.

The DuoComfort must be op-

erated in conjunction with a

downstream, wall-mounted gas

pressure regulation system, e.g.

MonoControl CS or GOK Type

EN61-DS (inlet connection with

male thread M20 x 1.5). Using

other gas pressure regulation

systems is prohibited.

The DuoComfort changeover

valve can be used in commercial

vehicles (e.g. in accordance with

DGUV regulation 79 – previously

BGV D 34).

Using the DuoComfort in closed

rooms (e.g. at home), on boats

or in EX Zone 0 (e.g. tankers) is

prohibited.

The national regulations must

be observed if there is a possi-

bility of it being used in mobile

homes. In Germany, its use in

mobile homes is prohibited.

Safety instructions

– The use of upright gas cylin-

ders from which gas is taken

in the gas phase is manda-

tory for operation of the

changeover valve, gas equip-

ment and gas systems. Gas

cylinders from which gas is

taken in the liquid phase (e.g.

for fork lifts) must not be used,

since they would result in

damage to the gas system.

– Two high-pressure hoses are

needed for connecting to the

gas cylinders. Truma provides

the necessary high-pressure

hoses with the most common-

ly-used connection variants for

European gas cylinders (see

Page67– 68).

– High-pressure hoses with

hose rupture protection (HRP)

on the inlet side are manda-

tory for “operating the gas

system while driving”. See the

notes in the relevant operating

instructions for the down-

stream gas pressure regu-

lation system.

– Pressure regulation devices

and hoses must be replaced

with new ones no more than

10years after their date of

manufacture (every 8 years if

used commercially). The oper-

ator is responsible for this.

– To avoid disturbances in the

gas system during winter

operation, the DuoComfort

changeover valve may be

equipped with Truma's

“EisEx” regulator heating

(part. no. 53101-01).

Control and display panels

DuoComfort

min.

50 cm

Figure 1 – MonoControl CS

example

a = control knob for the oper-

ating / reserve cylinder

b = status display – operating /

reserve cylinder (green / red)

c = green reset button – crash

sensor triggering element

d = green button – hose rupture

protection

Truma offers a remote in-

dicator as an accessory

(partno. 50210-01) to permit

reading of the operating cylin-

der's status from inside the

vehicle.

Start-up

– For example, turn control knob

(a) to the left until it stops

(left connection is operating

cylinder.

– Connect gas cylinders and

make sure all hose connec-

tions are in good condition.

– Open the valves on both gas

cylinders.

– Firmly press the hose rupture

protection (d – green button)

for about 5 seconds. The dis-

play in the mica window (b)

turns green.

Operating instructions – Put the gas pressure regu-

lation system into operation

(see the relevant operating

instructions).

Changeover

As soon as the pressure in the

operating cylinder falls below

0.5 bar, the valve automatically

switches over and begins taking

gas from the second gas cylin-

der. The display in the mica win-

dow turns red.

In extreme cold or when a

large amount of gas is con-

sumed from the cylinder over a

long period of time, the gas pres-

sure may fall below 0.5bar even

though there is still some gas left

in the cylinder. This may result in

gas being taken from both gas

cylinders simultaneously.

If necessary, use the control knob

(a) to manually select which cyl-

inder will be operating and which

will be held in reserve.

Always turn control knob (a) as far

to the left or right as it will go (an

intermediate position will cause

gas to be removed from both

gas cylinders simultaneously).

Removal status

In the normal position (operating

cylinder on the left, reserve cyl-

inder on the right), the following

display will be seen:

– Status display (b) is green =

gas taken from the left cylin-

der (operating cylinder).

– Status display (b) is red = gas

taken from the right cylinder

(reserve cylinder).

Changing cylinders

Residual gas: No smok-

ing, no naked flames!

DuoComfort offers the possibility

of changing empty gas cylinders

without interrupting operation

of the consumers. Non-return

valves integrated into the inlet

connections prevent gas from

escaping when only one gas

cylinder is attached for a short

time (see “Using only one gas

cylinder”).

– Rotate the control knob (a) by

180° or half a turn to the stop

position, and the previous

reserve cylinder becomes the

operating cylinder. After the

cylinder change the full gas

cylinder is available again as

the reserve cylinder.

The status display (b) changes

to green.

– Close the empty cylinder's

valve and screw off the high

pressure hose.

– Screw the high-pressure hose

onto the full gas cylinder and

open the cylinder valve. If

necessary firmly press the

hose rupture protection (d) for

about 5 seconds.

The status display (b) remains

on green.

After any intervention,

check the hose connection

on the cylinder valve for leaks

(see “Checking for leaks in the

high-pressure section”).

Hose change

Residual gas: No smok-

ing, no naked flames!

We recommend the Truma screw

aid (Part no. 50020-61500) for

screwing the hoses on and off.

It will help you generate the

necessary tightening torque and

will prevent damage to the screw

fittings, which may otherwise re-

sult from using an improper tool.

– Close the gas cylinder valve.

– Remove the high pressure

hose from the gas cylinder (or

from the slip-on adapter) and

from the inlet to DuoComfort.

– Screw the country-specific

high-pressure hose onto the

DuoComfort inlet and onto the

cylinder (or onto the slip-on

adapter).

– Open the gas cylinder valve.

– If necessary firmly press the

hose rupture protection (d) for

about 5seconds.

– Put the gas pressure regu-

lation system into operation

(see the relevant operating

instructions).

When changing the hose,

ensure that the seal pro-

vided with the hose (hose outlet –

changeover valve inlet) is correct-

ly installed and is not damaged.

We recommend that the

seal (part no. 50020-

76300) be replaced every time

the hose is changed.

After any intervention, check the

hose connection on the cylinder

valve and at the DuoComfort inlet

for leaks (see “Checking for leaks

in the high-pressure section”).

Using only one gas cylinder

You can also use DuoComfort

with only one gas cylinder.

Non-return valves integrated into

the inlet connection prevent gas

from escaping through the un-

used connection.

– The free inlet must be sealed

off using the provided blind

cover (brass) if only one cylin-

der is being used.

– Turn the control knob (a) to-

wards the operating cylinder.

Checking for leaks in the

high-pressure section

A trained technician must

check the medium and low pres-

sure sections for leaks. In ad-

dition, we recommend that the

person responsible for operating

the gas system checks the high

pressure section every time a

cylinder or hose is replaced.

In particular, the screw fittings

on the gas cylinder valve and on

the changeover valve should be

checked for leaks with the proper

tools, such as a leak-finder spray

according to DIN EN 14291.

Accessories

High-pressure hoses

(with hose rupture protection)

see Page 67 – 68

1.5-metre connection hose

for connecting external

gas cylinders (G.5;

part no. 50020-61300)

Replacement seals

for high-pressure hoses

(G.13 and M20 x 1,5;

part no. 50020-76300)

EisEx regulator heating

(part no. 53101-01)

Remote indicator

(including EisEx)

shows the removal status from

inside the vehicle.

(part no. 50211-01)

Elbow union 90 °

(part no. 50020-56000)

Additional kit

required when gas cylinders are

more than 100 cm apart

(part no. 50020-61100)

Gas remote switch

for shutting off the gas supply

from the vehicle interior

GS 8 (part no. 57014-01)

GS 10 (part no. 57024-01)

Screw aid

(part no. 50020-61500)

Gas filter

suitable for all wall-mounted

changeover valves with a

M20x1.5 inlet screw joint (male

thread – G.13). Install upstream

of the changeover valve.

(part no. 50600-01)

Technical data

determined in accordance with

EN 16129:2013 and Truma test

conditions

Type of gas

Liquid gas (propane / butane)

Admission pressure

0.95 – 16 bar

Output pressure

0.3 – 0.9 bar

Nominal changeover

pressure (pdi)

750 mbar

Valve inlet

Male thread M20 x 1.5 (G.13)

Valve outlet

Union nut M20 x 1.5 (H.20)

Recommended tightening torque

3 – 5 Nm for union nut

M20 x 1.5 (G.13, H.20)

Operating temperature

-20 °C to +50 °C

Product ID number

CE-0085BQ0102

DG approval number: 3894

Subject to technical changes.

Hochdruckschlauch / High pressure hose / Lyre haute pression

Verwendung nach Ländern / Use in countries / Utilisation selon les pays

G.1

50410-04

50420-04 •••

G.2

50410-03

50420-03

o•ooo

•oo

G.7

50410-02

50420-02

•

propane •

butane

G.8

50410-06

50420-06 ••••

o•

butane •• •

propane

G.10

50410-05

50420-05

G.12

50410-01

50420-01 ••o•

•= Gängigster Anschluss / Most common connection / Raccordement le plus courant

o= Ebenfalls erhältliche Anschlüsse / Also available connections / Raccordements également disponibles

x= für Gasflaschen mit Clip-on Adapter / for gas cylinders with clip-on adapter / pour bouteilles de gaz avec

adaptateur à clipser

Art-Nr. / part no. / N° d’art.: 50410-xx (450 mm)

50420-xx (750 mm)

Hochdruckschlauch / High pressure hose / Lyre haute pression

Verwendung nach Ländern / Use in countries / Utilisation selon les pays

TR YU

G.1

50410-04

50420-04 ••

G.2

50410-03

50420-03

oo ooooo

G.7

50410-02

50420-02

G.8

50410-06

50420-06

o•x••••

G.10

50410-05

50420-05 • •••

G.12

50410-01

50420-01

o•

•= Gängigster Anschluss / Most common connection / Raccordement le plus courant

o= Ebenfalls erhältliche Anschlüsse / Also available connections / Raccordements également disponibles

x= für Gasflaschen mit Clip-on Adapter / for gas cylinders with clip-on adapter / pour bouteilles de gaz avec

adaptateur à clipser

Art-Nr. / part no. / N° d’art.: 50410-xx (450 mm)

50420-xx (750 mm)

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