Ouman H21 heating controller for one circuit
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The Ouman H21 is a surface mounting heating controller for one circuit. It is suitable for radiator heating and floor heating.
Dimensions: width 230 mm, height 160 mm, depth 60 mm
Weight: 1.3 kg
Protection class: IP 41
Operating temperature: 0 ºC…+50 ºC
Storing temperature: -20 ºC…+70 ºC
Power supply L (91), N (92)
Operating voltage: 230 Vac / 200 mA
The internal 24 V power source, total load capacity of max.: 1A/23 VA
Supply cable fuse: max 10A
Measurements inputs:
Sensor measurements (inputs 11-19): NTC10-element: ±0,2 ºC between -50 ºC…+70 ºC
Also sensor tolerances and the effect of cables must be considered when calculating total accuracy. Measurement M1 can be connected also from outside of the casing by a plug-connector.
Digital inputs (27, 28): Contact voltage 15 Vdc, switching current 5 mA. Transfer resistance max. 250 Ω (closed), min. 350 Ω (open).
Analog outputs (68): Output voltage range 0…10 V. Output current max. 7mA
24 VAC output (51): Total current of 24 VAC output and triac-outputs max. 1A.
Pump control contacts (84,85): Contacts for circulation pump. Pumps are controlled by a switch on the top of the H21 device. Relay max. load 3A.
Protective earth terminal (73-78): Protective earth terminal block for 230V devices. Control circuit fuse max. 10A
Control outputs (51): 24 VAC -control output
– Triac (55…60): Total current of triac-outputs and 24 VAC output max. 1A.
Data transfer connections:
– RS-485-bus A (3) and B (6): Unisolated, supported protocols Modbus-RTU.
Options
M-LINK: M-LINK adapter provides Modbus TCP / IP interface for H21
device.
GSMMOD: By connecting the GSM modem to the H21, you can communicate with the text messages to device and receive alarms to GSM phone.
APPROVALS
– Low Voltage Directive: 2014/35/EU
– EMC Directive: 2014/30/EU
– Restriction of Hazardous Substances (RoHS) Directive: 2011/65/EU
The following harmonised standards and technical specifications have been applied:
– LVD: EN 60730-1: 2011, EN 62233: 2008
– EMC: EN 60730-1:2011, EN 61000-3-2:2014, EN 61000-3-3:2013