Installation Guide Danfoss Link™ CC
12
12/2014
VISGL90N
Danfoss Heating Solutions
3 .3 . How and when to use repeater units
What is the purpose of a repeater unit?
A repeater unit strengthens the wireless signal, when a satisfying connection can
not be etablished between the Danfoss Link™ CC and other wireless Danfoss units.
When is a repeater unit needed ?
1. Complete the installation and perform a network test (see 4.9). If one or more
devices fail, include a repeater unit (CF-RU) in the network, between the
Danfoss Link™ CC and the device(s) that fail.
2. Alternatively, plan ahead. If “yes” is answered to one or more of the following
questions, Danfoss recommends to include a repeater unit at the beginning of
the installation (see 3.4):
• Is internal walls or deck construction between floors made of steel rein-
forced concrete?
• Is the distance between Danfoss Link™ CC and last device more than 20 m
and signal must pass more than two heavy walls (stone or non-reinforced
concrete)?
• Is the distance between Danfoss Link™ CC and last device more than 25 m
and signal must pass more than 2 light walls (gipsum/wood)?
• Is the distance more than 30m in free line of sight?
A repeater unit (CF-RU) can be ordered on Danfoss code no. 088U0230.
Note!
These are guidelines only, as many factors have influence on wireless communication.