Technical Data Vgh Boilers; Functional Introduction; Location Of Version Numbers - Slant/Fin VGH-299-CH Installation And Service Manual

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TECHNICAL DATA VGH BOILERS

Functional introduction

The VGH boilers are central heating boilers with a maximum high efficiency. Such a performance can be reached
by, amongst other things, using a special heat exchanger made of stainless steel. This allows the flue gases to
cool down below the condensation point, and so release extra heat. This has an immediate positive impact on the
efficiency.
The VGH boiler is set for Natural gas.
Fuel used must have Sulphur rates with a maximum annual peak over a short period of time of 150 mg/m
ppm) and an annual average of 30 mg/m
Boiler control includes:
 Cascade control for up to sixteen boilers
Remote operation and heat demand indication from each boiler

 Weather compensation control – Outdoor reset.
 Indirect tank control
Connections for:
 On/Off thermostat or
 0-10 VDC remote flow temperature (set point) control
 0-10 VDC remote boiler input control
 Outdoor temperature sensor
 External indirect tank circulator or diverter valve
 Boiler circulator

Location of version numbers

Burner Controller Hardware Version
– To be found on the second line of the white sticker on the side of the burner controller.
e.g. 957MN15_3Rh4a
Burner Controller Software Versions
– Press the menu button
Information
Software Versions
Boiler Status
Boiler History
Error Log
Software Versions
Display
Boiler
Device Group
. (22 ppm average)
3
modulating thermostat
Picture 3
, go to Information and then to Software Versions.
i
Picture 3.1
[63EF 83BC]
[5C79 14A9]
900MN
Picture 3.2
E93.1601EN032.C VGH installation manual
 PWM control for external boiler circulator.
 System circulator
 External flow switch or external safety device.
 Modbus
 External system sensor
 DHW indirect sensor or aquastat.
 External Ignition coil
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