Bosch BRBA-36HWD1N1-M18 - System Start Up; 11.1 System Start Up

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
WARNING: ELECTRICAL SHOCK
 Label all wiring prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
Size
(Tons)
Voltage
- Phase -
Frequency
Compressors
(each)
OD Fan
Motors
(each)
Supply
Blower
Motor
Unit Circuit
RLA LRA FLA FLA
MCA¹
(Amps)
Max Fuse²/
Breaker³ Size
(Amps)
36
(3)
208/230-
1-60
19A 52A 2.1A 3.8A 28.7 45
Table 11 Electrical Data Without Electric Heat
Heater Circuit
Dual Point Single Point
Model
kW
208/
240
Stages
FLA
(Amps)
MCA¹
(Amps)
Max Fuse²/
Breaker³
Size
(Amps)*
MCA
(AMPS)
Max Fuse²/
Breaker³
Size
(Amps)**
EHK-05J 3.8/5 1 18.1/20.8 23/26 25/30 52/55 60/60
EHK-08J 5.6/7.5 1 27.1/31.3 34/40 35/40 63/68 70/70
EHK-10J 7.5/10.0 1 36.1/41.7 46/53 50/60 74/81 80/90
EHK-15J 11.3/15 2 54.2/62.5 68/79 70/80 97/107 100/110
Table 12 Electrical Data With Electric Heat
1. Minimum Circuit Ampacity.
2. Maximum Over Current Protection per Standard UL 1995.
3. Fuse or HACR circuit breaker size fi eld installed.
* Max Fuse/Breaker Sizes are for electric heater ONLY (dual point electric heat).
DOES NOT include breaker size for the unit.
**Max Fuse/Breaker Sizes include breaker size for the unit AND electric heat (single
point electric heat).
Refer to Electric Heat Kit Installation Manual, some heater kits include
fuses from the manufacturer.
WARNING: ELECTRICAL SHOCK / FIRE HAZARD
 Any power supply and circuits must be wired and
protected in accordance with federal, state and local
electrical codes.
11 Start Up
11.1 System Start Up
1. Ensure Sections 4, 5, 6, 7, and 8 have been completed.
2. Set System Thermostat to OFF.
Figure 19
3. Turn on disconnect to apply power to the indoor and outdoor units.
Figure 20
ON
OFF
4. Wait one (1) hour before starting the unit if compressor crankcase heater is
used and the outdoor ambient temperature is below 70 °F.
Figure 21
60 MIN.
5. Set system thermostat to ON.
Figure 22