Rointe RD SERIES, Installation Manual

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The distance between holes for the wall mounting depends on the model, see the following table
for reference:
Model RDI050 RDI075 RDI100 RDI150 RDI200
Horizontal width between holes 350 mm 350 mm 350 mm 350 mm 350 mm
Height between upper and lower holes 340 mm 573 mm 768 mm 490 mm 670 mm
3.6. Storage and handling – If the cylinder is not being installed immediately, it should remain
in its carton with all pipe end protective caps in situ to prevent damage. We recommend that the
cylinder be transported to its installation position with the outer carton in place.
3.7. Pipework connections
– All Pipework connections to the cylinder MUST be made in
accordance with Fig1.
3.8. Safety – This product is not intended to be used by persons (including children) with reduced
physical, sensory, or mental capacities, or have no experience or knowledge of the product, except
if they are supervised or instructed in the use of the product by a person who is responsible for
his or her safety. Children must be supervised at all times to ensure that they do not play with
the product.
4. PLUMBING INSTALLATION
4.1. Connections. Connections MUST be made to the cylinder in accordance with Fig 1, and Fig
2. A drain cock (not supplied) should be fitted in the position shown in Fig 1 to facilitate draining
of the cylinder.
4.2. Cold water supply
– For best results, the cylinder should be fed by an uninterrupted supply
pipe into the pressure reducing valve (PRV) with a maximum supply pressure of 0.9 MPa. The
cylinder should not be used on any system with a supply pressure below 0.15 MPa and a flow rate
of less than 20 litres per minute.
4.3. Temperature and pressure relief valve
– The temperature and pressure relief valve (T/P
Valve) is supplied. Once the T/P valve is fitted should not be removed from the cylinder or
tampered with in any way. The valve is pre calibrated to lift at 0.7 MPa or 90 degrees centigrade
and any attempt to adjust it will invalidate the warranty and could affect the safety performance
of the unit.
The outlet of the T/P valve should be routed in 15mm copper piping in a downward direction
alongside the water heating unit to the tundish in a frost-free environment. The outlet of the
expansion relief valve must be T’d into this pipe before the tundish so that any water exiting either
valve can be seen draining through the tundish– see figure 2
4.4. Pressure reducing valve
– The pressure reducing valve should be installed in the cold water
supply to the water heating unit with the arrow pointing in the direction of water flow as shown in
figure 2. This can be connected to a maximum supply pressure of 0.9 MPa.
4.5 Expansion relief valve – This must be installed between the pressure reducing valve and the
water heating unit in accordance with Figure 2. No other valve should be fitted between this valve
and the cylinder. The expansion relief valve contains a non return valve.
4.6. Expansion vessel – A suitable expansion vessel with a pre-charge pressure of 0.15 or 0.3
MPa is available in an optional kit for fitting to all water heating units in the range. The expansion