Baxi Potterton WH65, WH46 manual Connecting the QAA73 Temperature Regulator, Fault messages

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14.4 CONNECTING THE QAA73 TEMPERATURE REGULATOR

The SIEMENS model QAA73 room temperature regulator, if required (optional extra) must be connected to terminals 1-2 of terminal board M2 in figure 13.

The link across terminals 3-4, provided for connection of a room temperature thermostat, must be removed. The settings of the domestic hot water temperature and domestic hot water production schedule must be made using this device.

The timed program of the central heating circuit must be set on the QAA73 if there is a single zone, or in relation to the zone controlled by the QAA73 device.

The timed program for the central heating circuit of the other zones can be set directly on the boiler control panel.

See the instructions provided with the QAA73 room temperature regulator for the user parameter programming procedure.

IMPORTANT: For systems divided into zones, parameter 80 “HC2 curve”, which can be set on the QAA73 temperature regulator, must be set as _ _ . _ “not active”.

QAA73: parameters which can be set by the installation engineer (service)

By pressing the two PROG buttons together for at least three seconds it is possible to access the list of pa- rameters that the installer can display and/or set.

Press either of these buttons to change the parameter to display or change. Press the [+] or [-] key to change the value displayed.

Press either of the PROG buttons again to save the change. Press the information button (i) to quit programming.

Here follows a list of the most commonly used parameters:

Line no.

Parameter

 

Range

Default value

70

HC1 curve

 

2.5…40

15

 

Selection of central heating circuit temperature curve “kt”

 

 

72

HC1 max. output

 

25…85

85

 

Central heating system maximum output temperature

 

 

74

Type of building

 

Light, Heavy

Light

75

Room compensation

on HC1

On HC1

 

Activation/deactivation of the influence of the room temperature. If it is deactivated, the outdoor

on HC2

 

 

temperature sensor must be installed.

on HC1+HC2

 

 

 

 

nil

 

77

Automatic adaptation of the temperature curve “kt” in relation to the room temperature.

On - off

On

78

Opt Start Max

 

0…360 min

0

 

Maximum time the boiler is switched on ahead of the timed program to optimise the temperature

 

 

 

in the premises.

 

 

 

79

Opt Stop Max

 

0…360 min

0

 

Maximum time the boiler is switched off ahead of the timed program to optimise the temperature

 

 

 

in the premises.

 

 

 

80

HC2 curve

 

2.5…40

—.-

 

 

 

—.-= not active

 

90

DHW Red Setp

 

10 or 35…58

10

 

Minimum temperature of the domestic hot water

 

 

91

DHW program

 

24 h/day

24 h/day

 

Selection of the type of timed program for domestic hot water.

TSP HC-1h

 

 

24 h/day

= always on

TSP HC

 

 

PROG HC-1h

= as HC1 central heating program less one hour

TSP DHW

 

 

PROG HC

= as central heating program

 

 

 

PROG DHW

= specific domestic hot water program (see also program lines 30-36)

 

 

- fault messages

In the event of fault, the display panel on the QAA73 shows the flashing symbol . Press the information key () to display the error code and a description of the fault (see Fault warning tables on paragraph 3.9).

INSTRUCTIONS PERTAINING TO THE INSTALLER

24

926.772.1 - GB/IE

 

 

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Contents INSTALLATION, Operation and Maintenance Manual WALL-MOUNTED Condensing BoilersContents Instructions Prior to Installation Instructions Prior to CommissioningCommissioning of the Boiler KeysCentral heating mode operating key Description of KeysSetting the Maximum Central Heating Temperature Setting the Maximum HOT Water TemperatureSetting the daily times for central heating mode operation Setting the Minimum Central Heating TemperatureFault Warnings and Resetting the Boiler Table for USER-SETTABLE ParametersFault Warnings Table E110Filling the Boiler Turning OFF the BoilerServicing Instructions and GAS Change General Information Hot water circuitHeating circuit New system Boiler Installation Existing systemInstallation of Flue and AIR Ducts Boiler SizeConcentric flue Horizontal Concentric FluesHorizontal Flue Terminal Ø 80/125 Installation Options Vertical Flue Terminal Ø 80/125 mm Installation OptionsHydraulic Diagram Hydraulic SystemPCB AGU Heat Exchanger Pressure Drop Connecting the Mains Supply Connecting the Pumps AC 50 Hz 1 a max cos φConnecting the HOT Water Tank Sensor Description of the Electrical Connections to the Boiler CLIP-IN AGUConnecting the QAA73 Temperature Regulator Fault messagesConnecting the Outdoor Temperature Sensor Without QAA73 room temperature regulatorWith QAA73 room temperature regulator With AGU2.500 for control of a low temperature systemGAS Valve Adjustment PCI MJ/Kg NET 34.02 Setting the Boiler Parameters H91Control and Operation Devices Check of Combustion Parameters Annual Service Activating the CHIMNEY-SWEEP FunctionBoiler Schematic Illustrated Wiring Diagram Technical Data Boiler model WH CategoryTelephone

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