Start Up; System Start Up - Bosch 19 SEER Series Operation Manual

Installation & Operation Manual
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.
Compressors
(each)
Voltage
Size
- Phase -
(Tons)
Frequency
RLA LRA
60 208/230-
27A 52A
(5.0) 1-60
Table 8
Electrical Data Without Electric Heat
Heater Circuit
Model kW Stages
EHK-05J 3.8/5 1
EHK-08J 5.6/7.5 1
EHK-10J 7.5/1.0 1
EHK-15J 11.3/15 2
EHK-20J 15/20 2
Table 9 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 installed at factory or fi eld installed.
* Max Fuse/Breaker Sizes listed in Table 9 are for electric heater ONLY. DOES NOT
include breaker size for the unit (refer to Table 8).
WARNING: ELECTRICAL SHOCK / FIRE HAZARD

Any power supply and circuits must be wired and
protected in accordance with local electrical codes.
BTC 761701105 A | 03.2019
OD Fan Supply
Motors Blower Unit Circuit
(each) Motor
Max Fuse²/
MCA¹
FLA FLA Breaker³ Size
(Amps)
(Amps)
2.1A 6.0A 41.9 60
Max Fuse²/
MCA¹
Amps Breaker³
(Amps)
Size (Amps)*
18.1/20.8 23/26 25/30
27.1/31.3 34/40 35/40
36.1/41.7 46/53 50/60
54.2/62.5 68/79 70/80
72.2/83.3 91/105 100/110
Bosch Inverter Ducted Packaged Heat Pump | 19

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 18
3. Turn on disconnect to apply power to the indoor and outdoor units.
Figure 19
4. Wait one (1) hour before starting the unit if compressor crankcase
heater is used and the outdoor ambient temperature is below 70 °F.
60 MIN.
Figure 20
5. Set system thermostat to ON.
Figure 21
ON
OFF
Data subject to change