Bosch BVA 15 Series Installation Instructions Manual page 22

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.