10 Commissioning; To Perform A Gas Pressure Test - Daikin EHYKOMB33AA Installation And Operation Manual

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Installation and operation manual (44 pages)

Installer's reference manual (264 pages)

Service manual (170 pages)

Table Of Contents

Table of Contents

Off

The gas boiler is out of operation but is supplied with electric power.

There will be no response on space heating and/or domestic hot

water demands. Frost protection is active. This means that the

exchanger is heated up if the water temperature in the gas boiler is

too low. If applicable, the keep hot function will also be active.

If frost protection or keep hot function is activated, will be displayed

(heating the exchanger). In this mode, the pressure (bar) in the

space heating installation can be read on the main display.

Waiting mode (blank service display)

The LED at the

button is lit and possibly also one of the LEDs for

the domestic hot water comfort function. The gas boiler is waiting for

a space heating and/or domestic hot water demand.

Pump overrun of space heating

After each space heating operation, the pump continues to run. This

function is controlled by the indoor unit.

Boiler shutdown when the required temperature is reached

The boiler controller can temporarily stop the requested space

heating demand. The burner will stop. The shutdown occurs

because the requested temperature is reached. When the

temperature drops too fast and the anti-cycle time has passed, the

shutdown will be cancelled.

Self-test

The sensors check the boiler controller. During the check-up, the

boiler controller does NOT perform any other tasks.

Ventilation

When the appliance is started, the fan goes to starting speed. When

the starting speed is reached, the burner is lit. The code will also be

visible when post-ventilation is taking place after the burner has

stopped.

Ignition

When the fan has reached its starting speed, the burner is ignited by

means of electric sparks. During ignition the code will be visible on

the service display. If the burner does NOT ignite, a new ignition

attempt occurs after 15 seconds. If after 4 ignition attempts the

burner is NOT yet burning, the boiler will go into fault mode.

Domestic hot water operation

Not applicable for Switzerland

The domestic hot water supply has priority over space heating

performed by the gas boiler. If the flow sensor detects a domestic

hot water demand of more than 2 l/min, space heating by the gas

boiler will be interrupted. After the fan has reached speed code and

ignition is done, the boiler controller goes into domestic hot water

mode.

During the domestic hot water operation, the fan speed and hence

the appliance power are controlled by the gas boiler controller so

that the domestic hot water temperature reaches the domestic hot

water temperature setting.

The domestic hot water supply temperature must be set on the user

interface of the hybrid module. See the user reference guide for

more details.

Domestic hot water comfort function/Frost protection/Keep

hot function

Not applicable for Switzerland

appears on the display when either the domestic hot water comfort

function, the frost protection function or the keep hot function is

active.

space heating operation

When a space heating request is received from the indoor module,

the fan is started, followed by the ignition, and the space heating

operation mode. During the space heating operation, the fan speed

EHYKOMB33A

Daikin Altherma hybrid heat pump – gas boiler module

4P353067-1K – 2020.10

and hence the appliance power are controlled by the gas boiler

controller so that the space heating water temperature reaches the

desired space heating supply temperature. During the space heating

operation, the requested space heating supply temperature is

indicated on the operating panel.

The space heating supply temperature must be set on the user

interface of the hybrid module. See the user reference guide for

more details.

Commissioning

INFORMATION

Protective functions – "Installer-on-site mode". The

software is equipped with protective functions, such as

room antifrost. The unit automatically runs these functions

when necessary. (If the user interface home pages are off,

the unit will not operate automatically.)

During installation or service this behaviour is undesired.

Therefore, the protective functions can be disabled:

▪ At first power-on: The protective functions are

disabled by default. After 36 h they will be automatically

enabled.

▪ Afterwards: An installer can manually disable the

protective functions by setting [4‑0E]=1. After his work

is done, he can enable the protective functions by

setting [4‑0E]=0.

Especially for UK:

It is a requirement that the boiler is installed and commissioned to

the manufacturer's instructions and the data fields on the

commissioning checklist completed in full.

To instigate the boiler guarantee the boiler needs to be registered

with the manufacturer within one month of the installation.

To maintain the boiler guarantee it is essential that the boiler is

serviced annually by a Gas Safe registered engineer who has been

trained on the boiler installed. The service details should be

recorded on Service Interval Record and left with the householder.

10.1

To perform a gas pressure test

1 Connect a suitable gauge on the gas valve. Static pressure

MUST be 20 mbar.

2 Select test program " ". See

boiler" [ 4 32]. Static pressure MUST be 20 mbar (+ or –

gas

1 mbar). If the working pressure is <19 mbar, the gas boiler