e-mail: sales@us.ebmpapst.com · TEL: 860-674-1515 · FAX: 860-674-8536

ebm-papst Inc., 100 Hyde Road, Farmington, CT 06034 USA

ebm-papst Inc., 2006 © ebm-papst Inc. reserves the right to change any specifications or data without notice

Combustion Air Blowers

Drive unit:

Brushless DC-motors with integrated electronics.

Series RG: internal-rotor design

Insulation class F (EN60335-1)

Series G1G/G3G: external-rotor design

Insulation class F (EN60335-1)

The motor is anti-vibration mounted to minimize

structure-born noise; rigid mounting with RG100.

Controllable blowers with steep pressure/air

flow characteristics curves and high maximum

pressure are required to provide optimal fuel/air

mixture and volume for modern gas or oil-fired

heating boilers that operate in modulating mode,

and also for gas technology in every operating

status and external condition.

The RG blowers with brushless DC-motors

have been developed to meet the special

requirements of these appliances. ebm-papst

has played a decisive part in the development of

EC blowers suited to this purpose and can,

today, offer the most extensive range of blowers

for this field of application. The special features

of these blowers can, however, also be used in a

wide range of other applications.

Housing:

RG and G1G/G3G: Die-cast aluminium

The air tightness required for gas pre-mixing is

achieved by sealing the two casing shells and

the passage hole of the drive shaft. When using

blowers for such applications, special criteria,

testing and approvals have to be asserted with

the customer. Safety tests (gas tightness etc.)

for the complete system have to be carried out

by the customer and are his responsibility.

Blower impellers:

RG and G1G/G3G:

Material: Plastic, anti-static, resistant

to pentane, surface resistance <10

dynamically fine-balanced.

Protection type:

IP20 with cover

RG100:

IP00

40,000 hours of ope-

Protection class:

The motors comply with the requirements for

protection class III. At rated voltages of over 42

V, therefore, a potential separation is provided

for between the voltage supply to the motor and

the interface to the control module and, com-

mensurate with the requirements on greater

insulation, creepage distances and clearances

of 8mm are also provided for. Protection class III

then only applies to the signal plug.

The blower complies with protection class I.

Humidity class:

The electronics comply with humidity class “E”

according to DIN 40040.

The circuit boards are coated with a protective

varnish to safeguard optimal protection in a cor-

rosive environment.

Bearings:

Maintenance-free ball bearings covered on both

sides, for the RG100 sintered calotte-sleeve

bearings with a lubricant depot. Calculated ser-

vice life expectation L10

ration at an ambient temperature of 40°C, hori-

zontal mounting position and typical operating

conditions.

Mounting positions:

1

2

3

4

5

6

Mounting positions 1 – 4 are possible. If the

motor is installed on anti-vibration mounts, the

motor weight is given additional support by an

elastic element. Details of the mounting position

must therefore be provided.

Consultation is indispensable for installation

positions 5 and 6.

Closed-/Open-loop speed control:

The blower speed can be adjusted over a wide

range using a PWM (pulse width modulation)

signal. The PWM signal is a rectangular signal,

preferably with constant frequency and variable

pulse width. It is activated by an open collector

drive and a pull-up resistor.

An additional electronic system is available as

an option, to convert an analog voltage signal of

0 – 10 V into the required PWM signal. In addi-

tion, there is another electronic system which

allows to activate two speeds, preset with

potentiometers, via a control input.

Interference suppression/EMC:

230 V AC: EMC according to EN 55011 and EN

50082-2

24 V DC: EMC according to EN 55014

Pressure relief:

Apertures for pressure relief on request.

Commutation electronics:

Motor electronics integrated in the blower unit,

with start-up current limit and reverse battery

protection using plug coding, locked-rotor pro-

tection and overload protection optional.

See separate drawings for details of interface

requirements.

Adaption to the boiler control is required

in specific cases.

Speed recognition:

Hall IC signal output (2 pulses per revolution).

RG100: 1 pulse per revolution

The derivative feedback is galvanically decou-

pled with motors on mains voltage operation.

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