Installation and Operating Instructions mode Controller °F 72186100-00N For the contractor AM10 Please read these instructions carefully 7218 6100 (07/2010) US/CA Modulating Outdoor Reset Control US-listed
Contents 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 . . . . . . . . . . . . . . . . . . . . . . . .
Installation manual 1 Installation manual 1.1 Description of Module 1 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.
1 1.2 Installation manual Outdoor reset 1.3 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. Mounting of the AM10 Mount the AM10 module inside a Buderus boiler.
Installation manual 1 On/Off Ø °F mode L Ø = 18 AWG L ≤ 100 ft. R ≤ 100 Ω 72186100-02N Fig. 2 Thermostat mode Ø °F L Ø = 18 AWG L ≤ 100 ft. R ≤ 100 Ω 72186100-03N Fig. 3 Outdoor sensor [°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.
1 1.4 Installation manual Positioning outdoor sensor For best performance the outdoor sensor is to be positioned where the sun can never reach it. Mount only on a north facing wall of the building, out of the sunlight, with at least 1 foot (30 cm) above snow line. Keep the sensor away from heat sources like dryer, water heater, or boiler vents, windows, etc. ☺ ☺ Fig. 4 Sensor location 1.
Installation manual 1 AM10 Module Wire terminal strip RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW 1 2 1 2 1 2 1 Outdoor sensor EV 2 1 2 Terminals FA and WA not used in this application 1 Factory Installed Jumper 2 On / Off 1 2 1 2 DHW Tank Sensor Zone valve Low Voltage Field wiring 120 VAC Field wiring T T X X Pump Relay N H C1 C2 Neutral Line Dedicated 120 VAC 15 Amp Circuit Fig.
1 1.6 Installation manual Cascade Boiler Control In a Buderus cascade with an MCM10 the AM10 is used as a modulating control based on outdoor temperature. The MCM10 will determine which boiler or boilers need to fire and at what modulation. The MCM10 also rotates the boilers for equal run time. For details on the MCM10 module, consult the MCM10 manual. Do not install RC10 module when using this configuration.
User Manual 2 User Manual 2.1 Introduction 2 The AM10 is an outdoor temperaturedependent controller with a linear heating curve. The heat demand is communicated using a dry contact input. 2.2 A C 1 B Heating curve The heating curve indicates the relationship between the outdoor temperature and the supply temperature. This concerns a straight line which can be described by 2 points (A and B).
User Manual 2 If the display receives no user's input for 10 seconds, it will automatically switch over to its idle display (outdoor temperature). The display code is shown (flashing) when the appliance is locked. Otherwise the following symbols are implemented: Symbol Icon 2nd menu, supply temperature set point Use the Mode key to select the 2nd menu item: the supply temperature setpoint . 2.4.2 Range: 32 - 194 °F.
User Manual 2 4th menu, base point of heating curve Use the Mode key used to select the symbol. This concerns the base point of the heating curve corresponding with an outdoor temperature of 68 °F. The value will flash and can be changed using the plus + and minus – keys. 2.4.4 Adjustment range: 68 - 194 °F. Factory setting: 86 °F. °F 72186100-13N Fig. 12 Display of 2.5 °F 72186100-12N th Fig.
2 User Manual 2.5.1 Fault code 5H This is a communication fault. Check the connection to the boiler. °C 72186100-14N Fig. 13 Fault indication 2.5.2 Sensor fault/emergency operation If no sensor is detected on the AM10, dashes are shown in the numerical field instead of the outdoor temperature. If there is a heat request (the display will show ), the AM10 will request 122 °F, if this is permitted by the high limit. °F 72186100-15N Fig.
2 Notes AM10 - We reserve the right to make any changes due to technical modifications! 13
2 Notes 14 AM10 - We reserve the right to make any changes due to technical modifications!
2 Notes AM10 - We reserve the right to make any changes due to technical modifications! 15
United States and Canada Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-584-1681 www.buderus.us U.S.A. Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30-32 D-35576 Wetzlar www.buderus.com Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.
