Rinnai E110CP 8Boiler controls, i NOTICE, The Good-stateor standard read out, Technical read out

8Boiler controls

Installation & Servicing Instructions Rinnai E-Series

Example

Example

i NOTICE

The boiler is provided with a fully automatic microprocessor control, called CMS Control Management System. This control simplifies operation by undertaking all major control functions. Initially when power to the unit is switched on it will remain on standby. There is no indication LED on, until one of the program buttons is pressed. The control panel display will show the relevant state. When the installation is empty the display will show FILL.

The various parameters can be called up in two ways:

The Good-state or standard read out

The first way shows a simple display read out.

The boiler in operation will always show 'Good'. When a message is necessary this will be shown instead of Good.

Technical read out

The second way is a technical read out. In normal situations the following will be shown:

•on the left the status in which the boiler is active;

•on the right the supply temperature in °F;

Alternately indicated by:

•the water pressure in the installation in PSI.

When a message (error or blocking code) is necessary this will be shown instead of the technical read out.

To switch over from the Good-state to the Technical read out (and vice versa): - Press the STEP-button for 5 seconds.

When the system has been filled the automatic de-aeration program starts, when a program has been selected, by pressing the button for Central Heating, DHW or pump

program (, of ). The program takes 17 minutes and stops automatically. After this the unit will function normally. (See also 'Filling and de-aerate the boiler and installation, chapter 9).

On a call for heating or hot water the control system will select the required water control temperature. This water temperature is called the T-set value. On a call for central heating the boiler ignites first at low input. The input is then changed slowly to match the load required. The boiler operates in this way to avoid excessive water noises and temperature overshoot. On a call for domestic hot water supply the T-set value of central heating return water temperature is monitored. Depending on the amount of domestic water which is withdrawn from the DHW fascility, the central heating return water temperature, from which the input is adjusted, will vary.

Operation indication

(in the first display position by technical read out)

0No heat demand

1 Fan pre/post purge

2Ignition phase

3	Burner active on central heating
4	Burner active on DHW
5	Fan check

6Burner off when room thermostat is demanding

7	Pump overrun phase for central heating
	Pump overrun phase for hot water
8
	Burner off because of to high flow temperature
9
	Automatic de-aeration program
A

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