Buderus Logamax plus GB162 Instructions for use

CAUTION!
Before putting the boiler into operation read this manual carefully.
WARNING!
Improper installation, adjustment, alteration, service or maintenance
can cause injury, loss of life or property damage. Refer to this manual.
For assistance or additional information consult a qualied installer,
service agency or the gas supplier.
CAUTION!
The operating manual is part of the documentation that is delivered to
the installation's operator. Go through the information in this manual
with the owner/operator and make sure that he or she is familiar with
all the necessary operating instructions.
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high temp
heating
circuit
1
GB162
boiler pump group single boiler
low loss header
PK pump
TT
Supply Return
Back of Pump Group
-Remove plug 1" NPT Female to connect LWCO stand pipe.
Notes: 1. Contractor to furnish and install LWCO and
High Temp Manual Reset devices as requir
e
by local codes.
2. Do not install any type of valve or check val
v
in between LWCO and Boiler.
3. Refer to the manufacturer’s instructions wh
e
installing the low water cut-out (LWCO).
4. LWCO must be located above the highest
point of the boiler heat exchanger.
5. Hi Temp Manual Reset remote sensing bulb
must be in the boiler supply.
low water cut-out (LWCO)
- see notes 3 & 4
high temp manual reset -see note 5
reset button
AM10

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ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #1
T
Legend
Pump Low loss
Header
High Temp Heating Circuit Valve
TOutside
Temp Sensor
AM10
TT FA
WHT RED BLU
PK
Check Valve Thermostat
high temp manual reset
N.C. N.C.
low water cut-out (LWCO)
Notes: 1. Installing activity shall furnish and install
LWCO and high temp. manual reset per
local codes.
2. Jumper across ‘EV’ must be removed prior
to wiring in LWCO and high temp manual reset.

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MCM10 Front Panel
12345
Off: No power / internal error MCM10
On: Standard operation
Off: Pump off
On: Pump on
Off: Switching contact not activated
Blinking: System fault (example : system pressure too low or error in
the heating appliance(s))
Off: No communication
On: Communication between MCM10 and the previous MCM10.
Communication between MCM10 and a Heating Controller (e.g. RC35)
Off: No heat demand, heating appliance stand by
On: Heat demand, heating appliance in operation
GRN
RED
GRN
!
GRN
GRN
1
2
3
4
5

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120V
PE N L
120V
PE N LPE N LNO C NC
120
VAC
12
3456789101112
-
+
0 .... 10V
13 14 15 16 17 18 19 20 21 22 23 24
120V
PE N L
120V
PE N LPE N LNO C NC
YELYEL GRN RED
13 14 3456789101112
-
+
0 .... 10V
GRN WHT ORG
BLU RED
BRN
13 14 15 16 17 18 19 20 21 22 23 24
WHT
WHT WHT
WHT
GRY BLK
Input Mains
Supply
Output Mains
Supply to
following
MCMC10
System
Pump
Alarm / Error
output 120V
Do
not
use
Outdoor
Temperature
Sensor
External
brake
contact
(safeguard)
On/Off
Control
0 - 10 Volt
Signal
MM10, WM10
& continue to
modulating
control AM10
or RC35
Communication
between this
MCM10 and
heating control
Communication
between this
MCM10 and
following
MCM10
Heating
Appliance 1
Heating
Appliance 2
Heating
Appliance 3
Heating
Appliance 4
Printed
Circuit
Board
Low voltage
Line voltage

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WM10

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MCM10
RC35
EMS Bus
OA
PH
PH
EMS Bus
EMS Bus
FV
FK
Supply
Supply
Return Return
AUT
RC35
EMS Bus
Notes: 1. See page 48 for details on where to connect LWCO standpipe to pump group. 2. LWCO and high temp manual reset are furnished and installed by others per local code. 3. LWCO must be located above the highest point of the boiler heat exchanger.
4. Hi Temp Manual Reset remote sensing bulb must be located in the boiler supply.
low water cut-out (LWCO) -see notes 2 & 3
reset button
high temp manual reset -see note 4
high temp manual reset -see note 4
reset button
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RC 35 room control unit
EXT
123456789101112
-
+
0 .... 10V
GRN WHT ORG
BLU RED
BRN
120V
PE N L
120V
PE N LPE N LNO C NC
YELYEL GRN RED
13 14 15 16 17 18 19 20 21 22 23 24
WHT
WHT WHT
WHT
GRY BLK
MCM10
WM10 MM10
T
Legend
T
Motor
Pump
Temp Sensor
Mixing Valve
Low loss Header
Low Temp Heating Circuit
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #1
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #2
120 V /60Hz Line In
120 V /60Hz Line In
120 V /60Hz Line In
T
High Temp Heating Circuit
Valve
high temp manual reset
N.C. N.C.
low water cut-out (LWCO)
Notes: 1. Jumper(s) must be removed prior to wiring
the LWCO and high temp. manual reset.
high temp manual reset
N.C.

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3rd Party Controller
Supply
Return
Supply
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-
+
0 .... 10V
GRN WHT ORG
BLU RED
BRN
120V
PE N L
120V
PE N LPE N LNO C NC
YELYEL GRN RED
13 14 15 16 17 18 19 20 21 22 23 24
WHT
WHT WHT
WHT
GRY BLK
MCM10
Third Party Controller
T
T
Legend
T
Motor
Pump
Temp Sensor
Mixing Valve
Low loss Header
Low Temp Heating Circuit
TOutdoor
Temp sensor
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #1
120 V /60Hz Line In
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #2
120 V /60Hz Line In
T
High Temp Heating Circuit
Valve
120 V /60Hz Line In
0 - 10 VDC signal

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MCM10 RC35
T
Supply
Return
Return
Supply
PZ
AUT
RC35

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ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #1
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #2
123456789101112
-
+
0 .... 10V
GRN WHT ORG
BLU RED
BRN
120V
PE N L
120V
PE N LPE N LNO C NC
YELYEL GRN RED
13 14 15 16 17 18 19 20 21 22 23 24
WHT
WHT WHT
WHT
GRY BLK
MCM10
T
T
Legend
T
Motor
Pump
Temp Sensor
Mixing Valve
Low loss Header
DHW Outlet
TOutdoor
Temp sensor
RC 35 room control unit
EXT
T
120 V /60Hz Line In
120 V /60Hz Line In
120 V /60Hz Line In
PS
PZ
Indirect Storage Tank
WM10
PH system pump

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MCM10 RC35
Supply
Return
Supply
Return
AUT
RC35

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T
T
Legend
T
Pump
Temp Sensor
Low loss Header
High Temp Heating Circuit
Valve TOutdoor
Temp sensor
123456789101112
-
+
0 .... 10V
GRN WHT ORG
BLU RED
BRN
120V
PE N L
120V
PE N LPE N LNO C NC
YELYEL GRN RED
13 14 15 16 17 18 19 20 21 22 23 24
WHT
WHT WHT
WHT
GRY BLK
MCM10
RC 35 room control unit
EXT
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #1
120 V /60Hz Line In
ORG BLU GRN GRY RED LT BLU GRYGRN PUR WHT
GB162 #2
120 V /60Hz Line In
2
0 V /60Hz
ne In
WM10
2
0 V /60Hz
ne In
WM10
2
0 V /60Hz
ne In
WM10

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MCM10MCM10RC35
Supply
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Supply
AUT
RC35