Cold Feed And Expansion Tank Height For Open Vented Systems; Safety Valve; Gas Connection; System Pump - REMEHA Quinta 115 Technical Information

Remeha Quinta 115

7.4.3 Cold feed and expansion tank height for open vented systems

We recommend the boiler is installed on a closed (pressurised) system wherever
possible with a minimum operating pressure of 0.8 bar. However, open vented systems
can be accomodated as follows: The cold feed and expansion tank heights for all open
vented systems must comply with the requirements laid down in the Health and Safety
Executive publication (latest execution).
The Remeha Quinta series boilers require a minimum static head of 5 m. For
operation in open vented systems parameter ! (flow temperature setpoint) must be
set to 75 and parameter * (boiler modulation start point) must be set to 15

7.4.4 Safety valve

A safety valve should be fitted in accordance with the relevant British Standard.

7.4.5 Gas connection

Connect the boiler to the incoming gas in accordance with the requirements of the
Gas supply company. Install the main gas cock near the boiler. The gas connection
is located at the bottom of the boiler. Fit a gas filter in the gas supply piping to avoid
debris in the gas control unit.

7.4.6 System pump

The boiler must be installed on a fully pumped system.

7.4.7 Waterflow

The Quinta series of boilers have no minimum water flow requirement provided the
factory default modulation start point (parameter *) is not raised and the following
conditions are met:
- The two wire modulating controls are used,
- On a pressurised system with the high limit temperature set to flow temperature set
point + 20.

7.5 Modular installations

7.5.1 Introduction

The Remeha Quinta 115 is eminently suited for configuration in a cascade.
The cascade can supply up to 6 boilers with a total output of 642 kW (at 81/70°C).
With a width of only 50 cm, this could be installed (excluding low loss header) on a
wall of approx. 3.5 metres
For detailed information about cascade applications, please refer to our technical
information: "Quinta Cascade guide" or contact Broag for advice.
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