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Blauberg EVH S21 V.2

EVH S21 V.2
EVH S21 V.2
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Electric duct preheater for heat exchanger freeze protection.
Model features
  • Description
  • Modifications
  • Downloads
  • Designation key
  • Compatibility chart
  • Heater capacity selection diagram
Description
Description
FEATURES

Heat exchanger freeze protection by means of preheating of the intake air. Maintains the duct air temperature at a point that prevents the heat exchanger freezing. Compatible with Ø 125 up to 315 mm air ducts.

CONTROL

Equipped with a power cable. The signal cable for connection to the controller of the air handling unit. Equipped with a triac power regulator.Regulation is carried out via switching-on and switching-off the full load. Load commutation is carried out by the semiconductor device (triac). The switching unit has no wearing mechanical elements. Equipped with overheat thermostats:

  • main protection with automatic restart at +60 °С;
  • emergency protection with manual restart at +90 °С.
  DESIGN

The casing is internally filled with 20 mm layer of non-flammable mineral wool. The casing and the junction box are made of galvanized steel. Heating elements are made of stainless steel. Airtight connection to air ducts due to rubber seals.

MOUNTING

Fixation to round air ducts by means of clamp (included in the delivery). The heater is controlled by the air handling unit through the cable supplied and connected to the heater at the factory.In case of horizontal mounting position the control box cover must be directed upwards only. Permitted deviation up to 90°. The control box cover may not be positioned downwards!

Modifications
Modification name
EVH 125-0.6-1 S21 V.2
EVH 125-0.8-1 S21 V.2
EVH 125-1.2-1 S21 V.2
EVH 150-0.8-1 S21 V.2
EVH 150-1.2-1 S21 V.2
EVH 150-1.7-1 S21 V.2
EVH 150-2.0-1 S21 V.2
EVH 160-0.8-1 S21 V.2
EVH 160-1.2-1 S21 V.2
EVH 160-1.7-1 S21 V.2
EVH 160-2.0-1 S21 V.2
EVH 200-1.2-1 S21 V.2
EVH 200-1.7-1 S21 V.2
EVH 200-2.0-1 S21 V.2
EVH 250-1.2-1 S21 V.2
EVH 250-2.0-1 S21 V.2
EVH 250-3.0-1 S21 V.2
EVH 315-2.0-1 S21 V.2
EVH 315-3.0-1 S21 V.2
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Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
Name
S21 - user's manual (pdf 1.37Mb)
EVH S21 V.2 - image (png 574.82Kb)
EVH S21 V.2 / ENH S21 V.2 - user's manual (pdf 1.5Mb)
EVH S21 V.2 - data sheet (pdf 439.58Kb)
Designation key
Designation key
Series Connected air duct diameter [mm]   Heater power [kW]   Number of phases Compatibility with automation
EVH 125; 150; 160; 200; 250; 315 0.6; 0.8; 1.2; 1.7; 2.0; 3.0 1: single-phase S21 V.2: compatible with an S21 automation without a DB-9M connector
Compatibility chart
Compatibility chart
Heater model Unit model
EVH 125 S21 V.2 KOMFORT EC SB unit with a ∅ 125 pipe and an S21 automation without a DB-9M connector
EVH 150 S21 V.2 KOMFORT EC SB unit with a ∅ 150 pipe and an S21 automation without a DB-9M connector
EVH 160 S21 V.2 KOMFORT EC SB unit with a ∅ 160 pipe and an S21 automation without a DB-9M connector
EVH 200 S21 V.2 KOMFORT EC SB unit with a ∅ 200 pipe and an S21 automation without a DB-9M connector
EVH 250 S21 V.2 KOMFORT EC SB unit with a ∅ 250 pipe and an S21 automation without a DB-9M connector
EVH 315 S21 V.2 BlauAIR unit with a ∅ 315 pipe and an S21 automation without a DB-9M connector
Heater capacity selection diagram
Heater capacity selection diagram
EVH heater parameters calculation example: It is necessary to select EVH freeze protection heater for the KOMFORT EC SB 350 S21 unit. Design outdoor air temperature in cold season is -15 °C. Design capacity is 220 m³/h.Identify the interception point of the air flow line (1) with the outdoor temperature line (2). In this case the heater with the capacity of 1200 W will assure efficient freeze protection of the heat exchanger. Select the EVH 160-1.2-1 heater with the diameter corresponding to the diameter of the spigot of the KOMFORT EC SB 350 S21 unit.