Honeywell
Heating & Cooling Appliance Controls
Title: Functional description
S4965A3025
Doc.:
S4965A3025E20
Description Sign.
E.C.N.
Date
Rev.
First issue
M.Matiasko
01-Sep-2015
A
Page
2/22
Table of Contents
1. Software revisions ........................................................................................................................... 3
2. Reference standards and Approvals ............................................................................................. 4
3. Quality assurance statement .......................................................................................................... 5
4. Identification ..................................................................................................................................... 6
5. Product description ......................................................................................................................... 7
6. Modes of operation ........................................................................................................................ 15
7. Control Panel for ESYS ................................................................................................................. 17
8. History information ........................................................................................................................ 18
9. Other documentation ..................................................................................................................... 19
10. Installation .................................................................................................................................... 20
2.1 - Standards .................................................................................................................................................... 4
2.2 - Approvals ..................................................................................................................................................... 4
5.1 - General ........................................................................................................................................................ 7
5.2 - Layout .......................................................................................................................................................... 8
5.3 - Technical features ....................................................................................................................................... 9
5.3.1 - Connector and connections .................................................................................................................. 9
5.3.2 - High Voltage Connections .................................................................................................................. 10
5.3.3 - Communication Connector ................................................................................................................. 10
5.3.4 - Low Voltage Connections ................................................................................................................... 11
5.3.5 - Specification ........................................................................................................................................ 11
5.4 - Timing diagram .......................................................................................................................................... 13
5.5 - Recommended peripheral devices ............................................................................................................ 14
5.6 - Sensors and actuators ............................................................................................................................... 14
5.6.1 - Safety Cut-off Switch ........................................................................................................................... 14
5.6.2 - Alarm/Error Led ................................................................................................................................... 14
5.6.3 - Error Output to Esys 2 ......................................................................................................................... 14
5.6.4 - Gas Valve ............................................................................................................................................ 14
6.1 - Stand-by ..................................................................................................................................................... 15
6.2 - Heat Demand ............................................................................................................................................. 15
6.3 - Protection and error conditions .................................................................................................................. 15
6.4 - Ignition sequence ....................................................................................................................................... 16
10.1 - General remarks ...................................................................................................................................... 20
10.2 - Electrical connection ................................................................................................................................ 20
10.3 - Cables and wirings .................................................................................................................................. 21
10.4 - Ionization current check ........................................................................................................................... 21
10.5 - Adjustments and final checkout ............................................................................................................... 22
10.6 - EMC guidelines ........................................................................................................................................ 22