51
Plug
sXS
Terminals
Function
Explanation
222.3
222.4
Switching external heat
source with two high limit
safety cut-outs (max. 70 °C)
to protect the heat pump and
to stop the secondary pump
Zero volt contact
Note
■ The switching contact is a zero volt N/
O contact that is closed when a heat
demand is issued.
■ Never route low voltage via this con-
tact; that requires an on-site relay.
■ The boiler water temperature sensor in
the external heat source (plug F20)
must capture the average temperature
of the external heat source.
Connection values (contact loads):
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
Connect the high limit safety cut-out on
site:
■ In series to the secondary pump (ter-
minal 211.2 on the main PCB).
■ In series to the switching of external
heat sources.
Installation sequence
Electrical connection
(cont.)
5604 692 GB
Installation
Содержание AWB 201.B04
Страница 88: ...88 Opening the programming unit 1 3 2 2x Troubleshooting Repairs 5604 692 GB...
Страница 89: ...89 Removing cover from programming unit if necessary 5 4 4x Troubleshooting Repairs cont 5604 692 GB Service...
Страница 90: ...90 Placing the control panel in its service position 4x 1 3 2 Troubleshooting Repairs cont 5604 692 GB...
Страница 100: ...100 C B D A Parts lists internal unit Overview of assemblies internal unit 5604 692 GB...
Страница 102: ...102 0001 0005 0006 0004 0002 0008 0003 0007 0008 Parts lists internal unit Casing internal unit cont 5604 692 GB...
Страница 139: ...139 5604 692 GB...