Solar Control Units 9. 1 Solar Control Module, Type Sm1, Part No. 7429 073; Specification; Delivered Condition; Approved Quality - Viessmann VITOSOL SERIES Technical Manual

Solar control units
(cont.)
9.1 Solar control module, type SM1, part no. 7429 073

Specification

Construction
The solar control module contains:
■ PCB
■ Connection terminals for:
– 4 sensors
– Solar circuit pump
– KM BUS
– Power supply (on-site ON/OFF switch)
■ PWM output for controlling the solar circuit pump
■ 1 relay for switching a pump or valve
Collector temperature sensor
For connection inside the appliance.
On-site extension of the connecting lead:
■ 2-core lead, length max. 60 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables
Lead length
IP rating
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
Cylinder temperature sensor
For connection inside the appliance.
On-site extension of the connecting lead:
■ 2-core lead, length up to 60 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables
Lead length
IP rating
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
For systems with Viessmann DHW cylinders, the cylinder temperature
sensor is installed in the threaded elbow (see chapter "Specification"
of the relevant DHW cylinder and chapter "Installation accessories")
in the heating water return.
Functions
■ Switching the solar circuit pump
■ Electronic limiter for the temperature in the DHW cylinder (safety
shutdown at 90 °C)
■ Collector safety shutdown

Delivered condition

■ Solar control module, type SM1
■ Cylinder temperature sensor
■ Collector temperature sensor

Approved quality

CE designation according to current EC Directives
VITOSOL
■ Central heating backup is controlled in conjunction with a multi-mode
heating water buffer cylinder
■ The heating of two consumers is controlled via a collector array
■ Switching an additional pump or valve via relay
■ Second temperature differential control or thermostat function
■ Solar circuit pump speed control via wave pack control or solar circuit
pump with PWM input (Grundfos)
■ Suppression of DHW cylinder reheating by the boiler (auxiliary func-
tion for DHW heating is possible)
■ Suppression of reheating for central heating by the boiler with central
heating backup
■ Heating up of the solar-heated preheat stage (for DHW cylinders with
a total capacity of ≥ 400 l)
■ Load balancing and diagnostic system
2
(cop- Specification
2.5 m
IP 32 to EN 60529; ensure
through design/installation
NTC 20 kΩ at 25 °C
−20 to +200 °C
−20 to +70 °C
2 (cop-
Rated voltage
3.75 m
Rated frequency
IP 32 to EN 60529; ensure
Rated current
through design/installation
Power consumption
NTC 10 kΩ at 25 °C
Protection class
IP rating
0 to +90 °C
−20 to +70 °C
Function
Permiss. ambient temperature
– during operation
– during storage and transport
Rated capacity of the relay outputs
– Semi-conductor relay 1
– Relay 2
– Total
0
1 8
5 8
230 V~
50 Hz
2 A
1.5 W
I
IP 20 to EN 60529; ensure
through design/installation
Type 1B to EN 60730-1
0 to +40 °C use in the living
space or in boiler rooms
(standard ambient conditions)
−20 to +65 °C
1 (1) A, 230 V~
1 (1) A, 230 V~
max. 2 A
9
VIESMANN
35