Title: Functional description S4965A3025
1. Software revisions ........................................................................................................................... 3
2.1 - Standards .................................................................................................................................................... 4
2.2 - Approvals ..................................................................................................................................................... 4
4. Identification ..................................................................................................................................... 6
5. Product description ......................................................................................................................... 7
5.1 - General ........................................................................................................................................................ 7
5.2 - Layout .......................................................................................................................................................... 8
5.3 - Technical features ....................................................................................................................................... 9
5.3.5 - Specification ........................................................................................................................................ 11
5.4 - Timing diagram .......................................................................................................................................... 13
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. Modes of operation ........................................................................................................................ 15
6.1 - Stand-by ..................................................................................................................................................... 15
6.2 - Heat Demand ............................................................................................................................................. 15
6.4 - Ignition sequence ....................................................................................................................................... 16
7. Control Panel for ESYS ................................................................................................................. 17
8. History information ........................................................................................................................ 18
9. Other documentation ..................................................................................................................... 19
10. Installation .................................................................................................................................... 20
10.1 - General remarks ...................................................................................................................................... 20
10.2 - Electrical connection ................................................................................................................................ 20
10.3 - Cables and wirings .................................................................................................................................. 21
10.4 - Ionization current check ........................................................................................................................... 21
10.6 - EMC guidelines ........................................................................................................................................ 22
First issue
Table of Contents
Description
Heating & Cooling Appliance Controls
Doc.: S4965A3025E20
Sign.
E.C.N.
M.Matiasko
Honeywell
Date
Rev.
01-Sep-2015
A
Page 2/22