Heat Distribution Accessories; Motorised Three-Way Valve (Return Temperature Raising Facility); Circulation Pumps - Viessmann VITOFLEX 300-UF Technical Manual

Installation accessories

4.3 Heat distribution accessories

Motorised three-way valve (return temperature raising facility)

For part no., see pricelist
Rated heating output Designation
[kW]
390 - 1250 Motorised three-way valve, DN 50
390 - 1250 Motorised three-way valve, DN 65
390 and 530 Motorised three-way valve, DN 80
720 Motorised three-way valve, DN 100
950 and 1250 Motorised three-way valve, DN 125
Note
Not available separately: Only as part of an overall system

Circulation pumps

Wilo Stratos high efficiency circulation pumps
For part no., see pricelist
Wilo Stratos high efficiency circulation pumps:
■ EC motor and automatic output matching
■ Thermal insulation as standard for heating applications
■ Pump body with cataphoresis coating to prevent corrosion due to
the formation of condensate
Rated heating Designation
output
[kW]
390 Wilo Stratos 65/1-12
530 and 720 Wilo Stratos 80/1-12
Wilo Stratos IL inline circulation pump
For part no., see pricelist
Wilo IL low pressure inline circulation pumps:
■ Single stage low pressure centrifugal pump in inline design
■ IEC standard motor
■ Pump body with cataphoresis coating to prevent corrosion due to
the formation of condensate
Rated heating Designation
output
[kW]
1250 Wilo IL 100/145-1, 1/4
Note
■ Cannot be ordered separately: Delivery only as part of a complete system
■ We reserve the right to select the pump manufacturers and types
Pump selected according to:
■ Pump selected according to minimum requirements (see Specification page 14)
■ Requirements of the relevant application
VITOFLEX 300-UF
(cont.)
DN
[mm]
DN
[mm]
65
80
DN
[mm]
100
KVs Servomotor
3 230 V
[m /h]
50 40 SQK 33
65 63 SAL 31
80 100 SAL 31
100 160 SAL 31
125 550 SAL 31
■ System extension by retrofitting communication modules LON,
CAN, PLR, etc.
■ Remote control via infrared interface (IR module/IR monitor)
■ Energy efficiency class A
■ ErP ready
■ System temperature from -10 to +110 °C (no icing up)
■ 1 × 230 V~, 50/60 Hz
■ IP rating IP 44
Installed length
[mm]
360
360
■ Bidirectional force-flushed mechanical seal
■ System temperature from -20 to +140 °C
■ 3 × 400 V~, 50/60 Hz
■ IP rating IP 55
Standard delivery:
■ Wilo Stratos IL inline circulation pump
■ Pump with gaskets, mating flanges
Installed length
[mm]
500
Incl. complete fittings
Mating flanges, gaskets
Mating flanges, gaskets
Mating flanges, gaskets
Mating flanges, gaskets
Mating flanges, gaskets
Nominal pressure
PN 6/10
PN 6/10
Nominal pressure
PN 16
Viesmann
29
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