Procedure for venting air from the pumps
4.2 - Victaulic type hydraulic connections
Typical hydraulic circuit diagram without hydraulic module
T
T
G
Q
Q
V
V
W
I
S
T
T
T
U
U
Option
B
L
H
J
K
O
Key
Components of the unit and hydraulic module
B
Screen lter (particle size of 1.2 mm)
C
Water drain tap
D
Relief valve
E
Pressure sensor
NOTE: Provides pressure information for the pump suction inlet (see
Control manual)
F
Variable speed dual pump (high or low pressure)
G
Water exchanger ow rate sensor
H
Temperature probe
NOTE: Provides temperature information for the water exchanger inlet
(see Control manual)
I
Evaporator
J
Water purge (evaporator)
K
Air purge (evaporator)
L
Temperature probe
NOTE: Provides temperature information for the water exchanger outlet
(see Control manual)
M
Pressure sensor
NOTE: Provides pressure information for the water exchanger outlet (see
Control manual)
N
Expansion vessel (Option 293)
O
Heater for evaporator frost protection (option 41A & 41B)
P
Heater for hydraulic module frost protection (option 41B)
Installation components
Q
Pressure gauge
R
Bypass valve for frost protection (if shut-o valves (item 19) are closed during
winter)
S
Water ow control valve
T
Shut-o valve
U
Pocket
V
Flexible connection
W
Charge valve
X
Air bleed
……... Included with the unit
- - - - - Hydraulic module (unit with hydraulic module option 116A & 116W)
Notes:
- The system must be protected against freezing.
- The unit's hydraulic module and the water type heat exchanger may be
protected against freezing using electric heaters and heat trace cables
(factory-tted options 41A & 41B).
- The pressure sensors are assembled on connections without Schrader.
Depressurise and drain the system before any work.
O
O
O
4 - WATER CONNECTIONS
24