Altherma EKHBHE008AA3V3, Installation Manual

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Installation manual
14
EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW48441-1B
Connection of the valve control cables
Valve requirements
■
Power supply: 230 V AC
■
Maximum running current: 100 mA
Wiring the 2-way valve
1 Using the appropriate cable, connect the valve control cable to
the X2M terminal as shown on the wiring diagram.
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
Wiring the 3-way valve
1 Using the appropriate cable, connect the valve control cable to
the appropriate terminals as shown on the wiring diagram.
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
S
TART
-
UP AND CONFIGURATION
The indoor unit should be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user expertise.
DIP switch settings overview
DIP switch SS2 is located on the switch box PCB (see "Switch box
main components" on page 7 ) and allows configuration of domestic
hot water tank installation, room thermostat connection and pump
operation.
Room thermostat installation configuration
NOTE Wiring is different for a NC (normal closed) valve
and a NO (normal open) valve. Make sure to
connect to the correct terminal numbers as
detailed on the wiring diagram and illustrations
below.
Normal closed (NC) 2-way valve Normal open (NO) 2-way valve
Two types of 3-way valves can be connected. Wiring
is different for each type:
■
"Spring return 2-wire" type 3-way valve
The 3-way valve should be fitted as such that
when the 3-way valve is idle (not activated), the
space heating circuit is selected.
■
"SPST 3-wire" type 3-way valve
The 3-way valve should be fitted as such that
when terminal ports 9 and 10 are electrified, the
domestic hot water circuit is selected.
"Spring return 2-wire" valve "SPST 3-wire" valve
NC
5 X2M 6 7
M
NO
5 6 X2M 7
M
9 X2M 8 10
M
9 X2M 8 10
M
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
Switch off the power supply before opening the switch box
service panel and making any changes to the DIP switch
settings.
DIP
switch
SS2
Description ON OFF
1 Not applicable for installer — (Default)
2 Domestic hot water tank
installation
(see
"Domestic hot water
tank installation
configuration" on page 15
)
Installed Not installed
(Default)
3 Room thermostat
connection
(see
"Room thermostat
installation configuration"
on page 14
)
Room thermostat
connected No room
thermostat
connected
(Default)
4 This setting
(a)
decides the
operation mode when
there is a simultaneous
demand for more space
heating/cooling and
domestic water heating.
(a) only applicable in case DIP switch 2 = ON
Heating/cooling
priority No priority
(Default)
■
When no room thermostat is connected to
the indoor unit, toggle switch SS2-3 should be
set to OFF.
■
When a room thermostat is connected to the
indoor unit, toggle switch SS2-3 should be set
to ON.
■
On the room thermostat, set the hysteresis appropriately to
prevent the pump from repeatedly turning on and off (i.e.
chattering), and thereby impacting the lifetime of the pump.
NOTE
■
When a room thermostat is connected to the
indoor unit, the heating and cooling schedule
timers are never available. Other schedule timers
are not affected. For more information on the
schedule timers, refer to the operation manual.
■
When a room thermostat is connected to the
indoor unit, and the
= button or y button is
pressed, the centralised control indicator e will
flash to indicate that the room thermostat has
priority and controls on/off operation and change
over operation.
4 3 2 1
ON
OFF
4 3 2 1
ON
OFF
4 3 2 1
ON
OFF