EN 12098-5-2017 pdf download.Energy Performance of Buildings – Controls for heating
systems – Part 5: Start-stop schedulers for heating systems- Modules M3-5,6,7,8.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 52000-1:2017, Energy performance of buildings – Overarching EPB assessment Part 1: General framework and procedures (ISO 52000.1:2017)
EN 60038, CENELEC standard voltages (IEC 60038)
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60730-series, Automatic electrical controls for household and similar use (IEC 60730-1)
EN ISO 7345:1995, Thermal insulation – Physical quantities and definitions (ISO 7345:1987)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345:1995, in EN ISO 52000-1:2017 and the following apply.
3.1
start-stop scheduler
device which switches heating modes affecting the heating control system according to a program
Note ito entry: See Figure 1.
3.2
start-stop timer
start-stop scheduler switching heating modes for a single programmed period, started manually or by external signal
Note 1 to entry: See Figure 2.
3.3
switch time
point in time at which the scheduler switches from a mode to another one
3.4
mode
state of a device or system defining the manner by which it performs its functions
Note ito entry: A heating system or a heating controller should have many heating modes (or heating operation modes), e.g. comfort. pre-comfort. eco mode, economy on, off, start, protection. It should be noted that other modes can also exist.
Note 2 to entry: Heating protection mode: In this mode, heating system Is switched off and, If It applies, enable frost protection function. It’s important to make a difference between the heating protection mode and a so-called device protection mode for mains powered equipment and house hold appliances. It concerns devices itself for non-operational, lowest power consumption mode which cannot be switched off (Influenced) by the user and that may persist for an indefinite time.
3.5
output signal
signal generated by the scheduler to the control system for switch heating mode
Note Ito entry: This signal can affect the controller or the actuating equipment or modify the room temperature controller set point.
3.6
program
memorised switch times, reproducing periods or periodic cycles, daily, weekly or yearly
Note I to entry: Program may include periods for exception handling, start period or tariff compensation functions.
3.7
type of daily program
daily program able to be reproduced for many days of the week or the year
3.8
exception handling function
temporary override of the program
3.9
start period
operating period between switch-on heating time and the beginning of normal occupation period during which heating rises room temperature
Note 1 to entry: A start-stop optimiser controls the switch-on heating Lime modifying the start period in relation with measured variables (see EN 12098—i and EN 12098—3). On a scheduler, start period set is a constant parameter, the switch-on time being lixed by start period and beginning of normal occupation period user settings.
3.10
tariff compensation
function anticipating the switch time, related to the programmed switch time and tariff rising time
Note I to entry: This function make benefits, according to cost reflective message from electric utility (see
EN 12098-3).
3.11
manual operation
mode of operation during which the mode of the scheduler is directly changed by the operator
These five scheduler categories should include optional functions, e.g.:
— Program exception handling started manually or by external signal (e.g. presence detector). overriding temporary the program;
— Start heating period separated setting. A period preceding the normal occupation period allowing the user to program a pre-heating period before the comfort period, this time being more easily programmed than switch-on heating;
— Tariff energy compensation: function anticipating the switch time allowing energy cost saving In case of time variable energy tariff.
NOTE Networked devices allows to program and manage easily the large number of schedulers settled in controllers and building automation and control systems (BACS).
6 Requirements
6.1 Data protection
In case of mains power failure, all data input on commissioning shall be retained according to Table 4 and diagram show Figure 4.EN 12098-5-2017 pdf download.

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