Electric Heater Package Option - Bosch ES025 Installation And Maintenance Manual

ES Series

ELECTRIC HEATER PACKAGE OPTION

WARNING: The HP series heater
package requires its own electrical
service separate from the heat pump's
power supply. DO NOT attempt to wire
the package into the same circuit as the
heat pump.
Factory installed internal electric heater packages
are available for ES Series units. Two power
supplies are required when heater packages are
utilized. The power supply for the heater package
(located in the electric heater package control
box) provides power for the heater elements, the
blower motor and the control circuit for the unit.
The power supply for the unit provides power for
the compressor. This allows the electric heaters to
continue to operate along with the blower motor in
the case of unit compressor and/or compressor
power supply failure.
Heater
Model
Model
ES025 thru 035 HP050-1XS
ES049 thru 071 HP050-1XM
ES049 thru 071 HP100-1XM
ES049 thru 071 HP150-1XM
HP150-1XM
ES049 thru 071 HP200-1XM
HP200-1XM
All heaters rated single phase 60Hz, and include unit fan load. All fuses type "D" time delay, HACR type breaker or
ES Series
KW Heater AMPS
208V
4.8 17.3
4.8 17.3
9.6 34.7
14.4 52.0
14.4 34.7
17.3
19.2 69.3
19.2 34.7
34.7
HRC FORM 1. Wire size based on 60 deg. C copper conductors.
Figure # 16 Heater Package Compatibility
Electric Heater Package Option | 15
Each ES Series model has a number of heater sizes
available. Refer to Figure #13 for heater package
compatibility with specific ES series units, model
nomenclatures and electrical data.
NOTE: If heat recovery unit is installed in an
area where freezing may occur, the unit
must be drained during winter months to
prevent heat exchanger damage. Heat
exchanger ruptures that occur due to
freezing will void the heat recovery package
warranty along with the heat pump
warranty.
Circuit MCA
240V 208V
20.0 L1/L2 27.1
20.0 L1/L2 27.1
40.0 L1/L2 49.5
60.0 SINGLE 71.2
40.0 L1/L2 49.5
20.0 L3/L4 21.7
80.0 SINGLE 92.9
40.0 L1/L2 49.5
40.0 L3/L4 43.4
Max. Fuse
240V 208V 240V
30.4 30 30
30.4 30 30
56.3 50 60
81.3 80 90
56.3 60 60
25.0 25 25
106.3 100 110
56.3 50 60
50.0 45 50
T111970291 (2015/01)
AWG
Min.
8
8
6
4
6
10
2
6
6