Cisco 3905 Panduan Pengguna - Halaman 6

Jelajahi secara online atau unduh pdf Panduan Pengguna untuk Telepon IP Cisco 3905. Cisco 3905 16 halaman. Cisco systems telephone user manual
Juga untuk Cisco 3905: Panduan Pengguna (14 halaman), Panduan Pengguna (40 halaman), Panduan Pengguna (2 halaman), Panduan Pengguna (3 halaman), Fitur (6 halaman), Panduan Pengguna (40 halaman), Fitur (11 halaman), Panduan Pengguna (36 halaman), Panduan Referensi Cepat (2 halaman), Menggunakan Manual (16 halaman), Panduan Pengguna (2 halaman), (Bahasa Portugis) Panduan Memulai Cepat (1 halaman)

6 • UK

2.3 EFC21 standard installation

Description

The diagram shows how a separate solenoid valve (SMG) must be connected to the EFC21. The

solenoid valve is part of the separate fail-safe system and will cut off the gas supply in the case of

insufficient system chimney draught (controlled by the fan pressure switch).

• Connect the earths of the mains supply, chimney fan and solenoidvalve

together (SMG).

• Connect the chimney fan and pressure switch to terminals 1–5.

• Connect the SMG to terminals 6–7.

• Connect the optional Air inlet monitoring to terminals 10–11. If this monitoring is not manda-

tory, then a jumper must be fitted across terminals 10–11.

• Connect mains supply to terminals marked "Supply".

Wiring diagram

Fig. 6

Unit

Fig. 7

Chimney fan with pressure switch (PDS)

Isolation switch

EFC21

SMG (solenoid valve)

3001736-EFC21-EFC25-UK

Mains

Gas