Buderus AM10 Installation And Operating Instructions Manual

For the contractor

Please read these
instructions care­fully

Installation and Operating Instructions

Controller

Modulating Outdoor Reset Control

mode

°F

72186100-00N

AM10

7218 6100 (07/2010) US/CA

US-listed

Contents

AM10 - We reserve the right to make any changes due to technical modifications!

2

Contents

1 Installation manual . . . . . . . . . . . . . . . . . . . . . 3

1.1 Description of Module . . . . . . . . . . . . . . . . 3

1.2 Outdoor reset . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Mounting of the AM10 . . . . . . . . . . . . . . . . 4

1.4 Positioning outdoor sensor . . . . . . . . . . . . 6

1.5 Single Boiler Control . . . . . . . . . . . . . . . . . 6

1.6 Cascade Boiler Control . . . . . . . . . . . . . . . 8

2 User Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 Heating curve . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Settings description . . . . . . . . . . . . . . . . 10

2.4.1 1st menu, idle display . . . . . . . . . . . . . . . 10

2.4.2 2nd menu, supply temperature set point. 10

2.4.3 3th menu, target point of heating curves. 10

2.4.4 4th menu, base point of heating curves 11

2.4.5 5th menu, warm weather shut down . . . 11

2.5 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.5.1 Fault code 5H . . . . . . . . . . . . . . . . . . . . . 12

2.5.2 Sensor fault/emergency operation . . . . 12

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

AM10 - We reserve the right to make any changes due to technical modifications!

3

Installation manual

1

1 Installation manual

1.1 Description of Module

Product description

The AM10 is a modulating control for
Buderus boilers equipped with the EMS
bus. It sets the supply water temperature
based on outdoor temperature. The boiler
fires, runs and modulates based on the
information received from the AM10, and
the delta temperature between supply and
return.
An ON/OFF signal from 3th party room
thermostats or zone controllers is used to
communicate a heat demand.
The AM10 offers warm weather shutdown
when the outdoor temperature rises above
an adjustabletemperature. To control and
stage multiple boilers, combine the AM10
with an MCM10 module.

Fig. 1 Included items

2 x

2 x

2 x

4 x

3 x

mode

°F

72186100-01N

Installation manual

AM10 - We reserve the right to make any changes due to technical modifications!

4

1

1.2 Outdoor reset

Outdoor reset is a smart way to
economically control space heating based
on outdoor temperature. It functions based
on the fact that the colder the weather the
greater the heat loss of a structure, and the
higher the supply water temperature
needed to heat the house. On a warmer
day with smaller losses a lower water
temperature will be able to heat the house.

Outdoor reset is the preferred control
when using multiple zones, as the boiler
supply water temperature is not dictated by
a master or largest zone, but solely based
on the heat loss of the structure.

Heating curve

The AM10 has a built in linear heating
curve that sets the supply water
temperature in relation to the outdoor
temperature.

The maximum supply water temperature is
set on the boiler dial works as a high limit.
The boiler will follow the heating curve in
the AM10 up to the high limit.

1.3 Mounting of the AM10

Mount the AM10 module inside a Buderus
boiler. For detailed instructions see the
installation manual of your boiler.

For connecting the AM10 to the EMS-Bus:
(Æfig. 5).

Setting

Outside

temperature

[°F]

Supply

temperature

[°F]

Default 14 167
Example 1 0 170
Example 2 -10 175
Example 3 -20 180

Tab. 1 Heating curve

AM10 - We reserve the right to make any changes due to technical modifications!

5

Installation manual

1

Fig. 2 Thermostat

Fig. 3 Outdoor sensor

On/Off

mode

°F

L

L ≤ 100 ft.

R ≤ 100 Ω

Ø = 18 AWG

Ø

72186100-02N

mode

°F

L

L ≤ 100 ft.

R ≤ 100 Ω

Ø = 18 AWG

Ø

72186100-03N

[°F] [k Ω] [°F] [k Ω] [°F] [k Ω] [°F] [k Ω]

-40 336.5 5 72.9 50 19.9 95 6.5

-31 242.6 14 55.3 59 15.7 104 5.3

-22 177.0 23 42.3 68 12.5 113 4.4

-13 130.4 32 32.7 77 10.0 122 3.6

-4 97.1 41 25.4 86 8.1

Tab. 2 Sensor resistance table