ECFWER6
Microprocessor controller for fan coils
4PW17551-1B
Installation and operation manual
8
Characteristics
List of functions activated
C1
Standard two pipe system
C2
Two pipe system – Remote switching mode
C3
Two pipe system – One valve
C4
Two pipe system – One valve – Remote switching mode
C5
Four pipe system – Two valves
C6
Four pipe system – Two valves – Remote switching mode
C7
Four pipe system
C8
Four pipe system – Remote switching mode
C9
Two pipe system – Electric heater
C10
Two pipe system – Electric heater – Remote switching mode
C11
Two pipe system – One valve – Electric heater
(a)
C12
Two pipe system – One valve – Electric heater – Remote
switching mode
(a)
C13
Two pipe systems – Automatic switching on water side
(b)
C14
Two pipe systems – One valve – Automatic switching mode on
water side
(b)
C15
Four pipe systems – Automatic switching on air side
(b)
C16
Four pipe systems – Two valves – Automatic switching on air
side
(b)(c)
C17
Two pipe systems – Electric heater – Automatic switching mode
on air side
(b)
C18
Two pipe systems – One valve – Electric heater – Automatic
switching mode on air side
(a)(b)
(a) Electric heater control: during heating operation only the electric heater works
(b) In this type of configuration, the input for the centralised cooling/heating switching mode is disabled.
(c) For configurations with automatic cooling/heating switching mode based on the air temperature in cooling mode, the fan stops
when the valve shuts off. The enabling signal refers to heating mode only (the water probe is placed on the hot water branch.)
Cooling mode (fan) is always enabled apart from the water temperature (there is only one water temperature probe that is used
to avoid the fan from running with cold water inside the heat exchanger).
M
MD
M
MD
M
MD
M
MD
M
MD
M
MD
H
2
O
H
2
O
AIR
AIR
AIR
AIR
1B_I+OM_4PW17551-1B.book Page 8 Wednesday, October 5, 2005 9:18 AM
