Hamworthy QAA73.210 Installation, Commissioning And Servicing Instructions

Programmable room unit

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QAA73.210

Programmable Room Unit

For Single Boiler Installations

INSTALLATION, COMMISSIONING AND

SERVICING INSTRUCTIONS

IMPORTANT NOTE

THESE INSTRUCTIONS MUST BE READ

AND UNDERSTOOD BEFORE INSTALLING,

COMMISSIONING, OPERATING OR

SERVICING EQUIPMENT

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Summary of Contents for Hamworthy QAA73.210

Page 1 QAA73.210 Programmable Room Unit For Single Boiler Installations INSTALLATION, COMMISSIONING AND SERVICING INSTRUCTIONS IMPORTANT NOTE THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT...
Page 3 For Single Boiler Applications Installation, Commissioning and Operating Instructions NOTE: THESE INSTRUCTIONS SHOULD BE READ AND UNDERSTOOD BEFORE ATTEMPTING TO INSTALL, COMMISSION OR OPERATE THIS UNIT PUBLICATION NO. 500001305 ISSUE ‘B’ June 2022 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 4: Table Of Contents
6.0 Technical Data……………………………………….. ………………………………………………………………………….…. 7.0 Single Heating Zone Installations………………. …………………………………………………………………….………..8.0 Single Heating Circuit with Domestic Hot Water…………………………. ………….……………...……………..….. 9.0 Twin Heating Circuits with Domestic Hot Water…………….. …………………………………………….……….….….. Appendix A: Sensors …………………………………………………………………………………………………………………….…….… HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
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Page 6 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 7: Introduction
• Holiday program • The heating programs and the d.h.w. program The Hamworthy QAA73.210 is a digital multi- can be reset to their default settings functional room unit for one or 2 heating circuits and • Programming lock (e.g. for child-proofing) d.h.w.
Page 8: Handling And Installation
The unit can be fitted to most commercially available recessed conduit boxes or directly on the wall 2.2 Installation • Wall • Boiler control panel (with the help of clips) The controller may not be exposed to dripping water Permissible ambient temperature: 0...50 °C HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 9 Pull the interface cable through the opening of the base and connect it to the screw terminals. Fit the base to the walls with screws Engage the housing front at the top of the base and close the unit to the bottom. HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 10: Electrical Installation
Only then separated from mains cables, preferably run in is the full functionality of the QAA73.210 ensured so separate conduits or ducts. Where mains cables that the most common applications can be fully...
Page 11: Commissioning
By pressing the ESC button, you come back to operating page selection. By pressing the ESC button, you leave the programming level. If no buttons are pressed for approx. 1 minute, the room unit will automatically leave the programming level. HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 12 The table opposite shows all available settings up to the heating engineer level. However, certain operating lines may be hidden, depending on the type of unit. E = End user, F = Heating engineer, O = OEM HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 13 Overview of user Parameters: Continued on next page... HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 14 The above table shows all available settings up to the heating engineer level. However, certain operating lines may be hidden, depending on the type of unit. E = End user, F = Heating engineer, O = OEM HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 15: Operation
4.0 Operation HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 16: Display
4.1 Display: Please see the previous table for the descriptions of the individual display icons. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 17 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 18 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 19 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 20: Programming Bmu Parameters
4.2 Programming BMU Parameters HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 21: Room Unit Settings
Example of a 7-day time switch program: Tip: First, choose the 7-day block to enter the switch- ing times required for the majority of days; then, select the individual days to make the required adjustments. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 22 This setting will change the frost protection setpoint of the room temperature. • This function is ensured only when the heating plant operates properly! • Frost protection for the boiler and the d.h.w. must be ensured by the boiler control HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 23 The relevant heating circuit is deactivated Note: The programmed heating curve is based on a room setpoint of 20°C. If the room setpoint is adjusted, the heating curve automatically adapts to the new value. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 24 By changing the value entered, the respective heating periods will be shortened or extended. Increase: Heating mode will start earlier, changeover to ECO later. Decrease: Heating mode will start later, changeover to ECO earlier. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 25 Also refer to "Composite outside temperature". 5…10 Heavy building structures: The room temperature will respond slower to outside temperature variations 1…5 Light building structures: The room temperature will respond quicker to outside temperature variations HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 26 Quick setback switches the heating off for a certain period of time, depending on the outside temperature and the building time constant. Example Duration of quick setback when Comfort setpoint minus Reduced setpoint = 2 °C (e.g. Comfort setpoint = 20 °C and Reduced setpoint =18 °C) HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 27 (HC2SR) Room temperature setpoint for heating circuit 2. Active only if supported by BMU. (HC2SF) Flow temperature setpoint for heating circuit 2. Active only if supported by BMU. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 28: Cooling Circuit
Function for limiting the maximum settable nominal setpoint of the d.h.w. temperature. Note: A d.h.w. setpoint maximum (TBWmax) of a BMU transmitted via OpenTherm is given priority and replaces that of the room unit (setting 130). HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 29: Configuration
1: DHW always ON 2: DHW time switch program active Cooling enable (COOL) The setting activates or deactivates the cooling function Default parameters (RESET) All parameters can be reset to their default values. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 30: Functions
For example, if the room temperature rises slightly, the flow temperature will immedi- ately be reduced even if there is deviation of setpoint / actual value apparent yet. To prevent continuous devia- tions, the I-part of PID control keeps the room temperature at the required level. HAMWORTHY HEATING LTD QAA73.210 500001305/B...
Page 31 4.8.4 Fix flow temperature setpoint: The setpoint has to be set manually. Note: The room influence (AMBON) must be set to "OFF" and, in addition, no outside sensor may be connected. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 32 • Set the right time of day, the right date and the Degree of Protection IP 20 to EN 60529 year on the room unit if the QAA73.210 is the Contamination Environment to EN 60730 clock master • Set the correct time of day and the date on the...
Page 33 External air sensor This must be installed on a North facing wall to prevent solar heating of the sensor and away from HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 34 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 35 For further details regarding the sensor specification and fitting requirements Note: The control does not incorporate a facility for HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 36 7 Day time clock with 4 periods each day for hot water circuit • Auto summer/winter time change (BST to GMT) • Holiday program • Frost protection for building • Frost protection for hot water cylinder • Reduced temperature (night setback) HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 37 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 38 X40 at the boiler LMU64 controller. Connect the flow sensor, QAL36, supplied with the kit, using a twisted pair shielded cable, to terminals X51-01 on the second heating circuit clip-in relay. HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 39 If required this must be facilitated externally to these controls. D.H.W. Circuit pump The D.H.W. circuit pump is designated Q3. This must be connected to the boiler at terminals ‘X2-04, HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 40 • Summer shutdown GMT) • Fault diagnostics with error code indication • Holiday program • Programmable lock to prevent tampering after • Frost protection for building commissioning • Frost protection for boiler HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 41 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 42 * QAC34/101 at -10 - +20C. The sensing element is an NTC resistor with a resistance of 1000Ω at 25°C. The resistance drops at about 4% per Kelvin. Mounting Position: Dimensions: 14,1 49,7 25 24,5 79,8 49,5 HAMWORTHY HEATING LTD QAA73.210 500001305/B Programmable Room Unit...
Page 44 Units 7 & 8 New Fields Business Park, Stinsford Road, Poole, Dorset, BH17 0NF Telephone: 01202 662555 Fax: 01202 662522 Email: service@hamworthy-heating.com Website: www.hamworthy-heating.com Hamworthy reserves the right to make changes and improvements which may necessitate alteration to the specification without prior notice.