Rointe 8436045913159, Instruction & Installation Manual

6

4.2.  Hydraulic connections

When connecting the water heater to the water supply system, pay attention to the indicative color markings 
(rings) of the pipes: 

blue

 for cold water and 

red

 for hot water.

The assembly and installation of the return safety valve supplied with the water heater is mandatory for safety.
EXCEPTION: If local regulations require the use of another safety valve or device (complying with EN 1487 or 
EN 1489 standards) they must be purchased separately. For devices that comply with the EN 1487 standard, 
the maximum working pressure announced should be 0.7 MPa. For other safety valves, the pressure to which 
it is calibrated must be 0.1 MPa less than that marked on the appliance plate. In these cases, the back-off valve, 
which is supplied with the water heater, should not be used.

ATTENTION:

•  You must not use any other return safety valve, other than the supplied by Rointe. The device may fail if any other return 

safety valves are used.

•  The presence of other or old reflective protection valves can cause deterioration of the water heater, therefore they 

must be removed.

Hot water outlet

Cold water inlet

Length “X”

1

2

3

To drain

Cold water suppy

Hot water outlet

Cold water inlet

To drain

Cold water suppy

1

2

4

3

5

Scheme A

Scheme B

When inlet pressure is less than 4 bar and expanded 
hot water can be accommodated in the pipe work.

When inlet pressure is less than 4 bar but expanded 
hot water cannot be accommodated in the pipe work.

DETAILS OF THE INSTALLATION 

1

Expansion relief valve (included in the installation kit)**

2

Nearest cold water draw off (not supplied)

3

Service valve (not supplied)

4

Expansion vessel (included)

5

Check valve (included)

6

Pressure reducing valve (included)

MINIMUM LENGTH OF PIPE (X)

Capacity

15 mm pipe

22 mm pipe

10 L

2.7 cm

1.2 cm

15 L

4.2 cm

1.8 cm

* These images are only for reference. Check the Building Regulations (PART G) for specific details and accessories required to perform a proper installation. The Rointe 
water heaters must be installed by an installer with a valid Unvented Water Heaters Installer certification.
**The installation kit is sold separately.

To drain

Cold water suppy

Hot water outlet

Cold water inlet

1

2

4

3

5

6

Scheme C

When inlet pressure is greater than 4 bar.