Bosch BVA 15 Series Installation Instructions Manual page 22

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2 2 | Bosch IDS BVA 15
TO THERMOSTAT
TO THERMOSTAT
Instructions on changing fan speeds:
1. Default is medium speed by factory settings.
2. High speed wiring: Switch to high speed (black wire) and connect with FAN terminal, move medium speed (red wire) to
M2 terminal.
3. Low speed wiring: Switch to low speed (blue wire) and connect with FAN terminal, move medium speed (red wire) to
M1 terminal.
Figure 19
Indoor Unit Wiring Diagram
Fan speed
Medium
High
Low
Table 10
Fan Speed Terminal Wiring
Data subject to change
FOR (OPTIONAL)
FOR (OPTIONAL)
ELECTRIC HEAT
ELECTRIC HEAT
CN3
CN6
CN8
M1
M2
FAN
CN1
CN4
CN7
CAPACITANCE
FOR SINGLE
FOR SINGLE AUXILARY HEAT MODE
AUXILARY
HEAT MODE
CONNECT W1 OR JUMP W1 AND W2
CONNECT W1 OR
Fan
Red
Black
Blue
L 1
L 2
LINE VOLTAGE
LINE VOLTAGE
FACTORY STANDARD
FACTORY STANDARD
FIELD INSTALLED
FIELD INSTALLED
FACTORY OPTIONAL
FACTORY
LOW VOLTAGE
LOW
VOLTAGE
FACTORY STANDARD
FACTORY STANDARD
FIELD INSTALLED
FIELD INSTALLED
FACTORY OPTIONAL
FACTORY OPTIONAL
FAN
USE COPPER CONDUCTORS ONLY
USE COPPER CONDUCTORS ONLY.
MO TO R
WARNING CABINET MUST BE
WARNING CABINET MUST BE PERMANENTLY
GROUNDED AND ALL WIRING TO CONFORM TO
I.E.C,N.E.C,C.E.C,C.L.C,AND LOCAL CODES AS
I.E.C,N.E.C,C.E.C,C.L.C,AND LOCAL CODES AS
APPLICABLE
APPLICABLE.
REPLACEMENT WIRE MUST BE THE SAME
GAUGE AND INSULATION TYPE AS ORIGINAL
WIRE.
Terminal
M1
Blue
Blue
Red
Installation Instructions
OPTIONAL
M2
Black
Red
Black
10.2020 | Bosch Thermotechnology Corp.

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