The Remeha Quinta Cascade System; Independent Installation; Dhw Production - REMEHA Quinta 115 Technical Information

7.5.2 The Remeha Quinta cascade system

For installing 2 to 10 boilers, Remeha's range of products includes systems that are
very easy to install (quick assembly). The hydraulic and gas pipe work can be put
together entirely without welding, using screw connections, compression connections
and flanges. By using these sets, you save considerably on assembly costs and the
total installation can, on balance, be carried out less expensively.
The sets consist of:
- suspension for boilers and pipe work
- low loss header
- common main gas pipe, supply and return main pipe
- partly pre-fitted boiler connection kits with the necessary fittings
The following optional equipment is also available:
- boiler connection kit
- cascade controller
- bends for connecting the low loss header at an angle
- frames for free-standing cascade configuration of a maximum of 10 wall-mounted
boilers.
- gas filter
- insulation sets
- mounting plates for controllers and plugs.

7.5.3 Independent installation

For specific situations, a suitable cascade installation can naturally always be
designed, consisting of several Remeha Quinta 115 boilers, possibly in combination
with Quinta 45, Quinta 65 and/or Quinta 85 boilers.

7.6 DHW production

The Remeha Quinta 115 is supplied as standard with an inbuilt DHW control.
This control, when used in conjuction with the optional Broag DHW sensor or
thermostat (not a Broag supply), a 3-way diverting valve* or DHW pump, can provide
boosted primary flow temperature independent of the variable temperature flow for
the fully condensing mode. However it can be independantly time controlled and will
isolate the HTG system during the demand period.
* Note: Because of the boiler water resistance (250 mbar at 20°C dT) we advise you
to use a DHW pump for DHW production instead of the 3-way valve.
On demand of the DHW sensor or thermostat and depending on parameter J
(reference: Par. 6.6.11), the boiler powers the DHW pump and turns off the HTG or
boiler pump.
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