Laying Coolant Lines - Rotex HPSU compact 304 Installation And Maintenance Manual

4 x Set-up and installation
Short desig-
nation
J9 Plug connection FLS (t
Plug connection internal cabling
J10
(to A1P)
Plug connection internal cabling
J11
(to RTX-AL4)
J12 Plug connection 3UV DHW
J13 Plug connection System-Bus (e.g. room station)
J14 Plug connection circulation pump P
J15 Plug connection internal cabling (strapping plug)
Plug connection room thermostat (RKRTR /
J16
RKRTW)
RoCon M1 Mixer module
RoCon U1 Room station
Status output for operating mode "Kühlen"
RoCon UFH (connection underfloor heating control RoCon
UHF)
RT Room thermostat (RKRTW)
RT-E Receiver for radio room thermostat (RKRTR)
RTX-AL4 Switch board (interface)
J1 Plug connection to TRA1
J3 Plug connection internal cabling (to A1P)
J6 Plug connection flow temperature sensor t
RTX-EHS Switch board (Backup heater)
K1 Relay 1 for backup heater
K2 Relay 2 for backup heater
K3 Relay 3 for backup heater
Terminal block for mains connection to backup
X1
heater
X2_1
X2_2 Plug connection internal cabling (to XBUH1)
X2_3
X3 Plug connection internal cabling to J3 (RTX-AL4)
Tab. 4-4 Key names for connections and circuit diagrams - Part 2

4.5 Laying coolant lines

Check whether oil trap arc necessary.
– Required if ROTEX HPSU compact is not installed at
ground level with the heat pump exterior unit (fig. 4-37,
H 10 m).
O
– At least one oil trap arc must be installed every 10 m dif-
ference in height (fig. 4-37, H = clearance from oil trap arc
to oil trap arc).
– Oil trap arc only required in gas line.
Install lines with bending unit and an adequate clearance to
electrical lines.
32
Key names
Explanation
/ V1)
R1
Z
V1
Short desig-
nation
Switching contact for Smart Grid (intelligent mains
SG
connection)
TRA1 Transformer
t External temperature sensor (RoCon OT1)
AU
t Storage tank temperature sensor 1 (RoCon BM1)
DHW1
t 2 (A1P) storage tank temperature sensor
DHW2
Return flow temperature sensor 1 (FLS - RoCon
t
R1
BM1)
t 2 (A1P) return flow temperature sensor
R2
t Flow temperature sensor 1 (RTX-AL4)
V1
t 2 (A1P) flow temperature sensor
V2
t Flow temperature sensor Backup Heater (A1P)
V, BH
V1 Flow sensor (FLS - RoCon BM1)
XAG1 Plug connection exterior heat pump unit
XBUH1 Plug connection Backup Heater (BUxx)
X2M6 Connecting cable clamp HPc-VK-1
X2M7 Connecting cable clamp HPc-VK-1
X11M Terminal block in HP convector
Only solder with light nitrogen flow
(hard soldering only).
Do not apply heat insulation to joins until after start-up (for
purposes of leakage search).
Establish flange connections and connect to the units.
( Pay attention to the tightening torque, see chapter 10.3
"Tightening torque").
FA ROTEX HPSU compact 4 - 06/2015
Explanation