Bosch IDP Premium 18 SEER2 Series User manual

Installation Instructions
Inverter Ducted Packaged Heat Pump
Bosch IDP Premium
18 SEER2 Series | 3 Ton Capacity | R410A
BTC 761703103 A |11.2022

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
Table of Contents
1 Key to Symbols and Safety Instructions 4
1.1 Key to Symbols 4
1.2 Safety 4
2 Component Location 6
3 Dimensions 7
3.1 Unit Dimensions 7
3.2 Dimensions - Back and Bottom 8
3.3 Dimensions - Left and Top 9
4 Installation 10
4.1 Pre-Installation 10
4.2 Rigging and Lifting 10
4.3 Location Restrictions 10
4.4 Rooftop Installation - Curb Mounting 12
5 Airflow Performance 13
6 Indoor Fan Motor Function 14
7 Ductwork 15
8 Condensate Drain Connection 16
8.1 Install Drain Pipe 16
9 Air Filter (Not Factory-Installed) 16
10 Electrical Wiring 17
10.1 Power Wiring 17
10.2 Grounding 17
10.3 Control Wiring 17
11 Start Up 19
11.1 System Start Up 19
12 System Charge Adjustment 20
12.1 Charging: Weigh-In Method 20
12.2 Subcooling Charging and Refrigerant Adjustment In Cooling
(Above 55°F Outdoor Temp.) 20
13 System Operation and Troubleshooting 22
13.1 Control Logic Description 22
13.2 Sensors (Thermistors/Pressure Transducer) 22
13.3 Defrost Description 23
13.4 Compressor Crankcase Heater Description 23
13.5 Reversing Valve Operation 23
13.6 Protection Functions 24
13.7 Fault Code Table 25
13.8 Parameter Point Check Table 26
13.9 Control Board Overview 27
13.10 Error Code Troubleshooting (ODU) 29
13.11 Error Code Troubleshooting (IDU) 35
13.12 Temperature and Resistance Relationship Tables (for Sensors) 36
13.13 Temperature and Resistance Relationship Tables (for T5) 37
13.14 Wiring Diagram 38
14 Maintenance 39
14.1 Cleaning Precautions 39
14.2 Regular Maintenance 39

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
1 Key to Symbols and Safety Instructions
1.1 Key to Symbols
Warnings
Warnings in this document are identified by a
warning triangle printed against a grey background.
Keywords at the start of a warning indicate the type and seriousness
of the ensuing risk if measures to prevent the risk are not taken.
The following keywords are defined and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where
there is no risk to people or property.
1.2 Safety
Please read before proceeding
This document contains a wiring diagram and service
information. This is customer property and is to remain with this unit.
Please return to service information pack upon completion of work.
WARNING:HIGHVOLTAGE
Failure to follow this warning could result in property
damage, severe personal injury, or death.
WAIT THREE (3) MINUTES after disconnecting power
prior to touching electrical components as they may hold a
dangerous charge of 380 VDC,then verify DC Voltage is less
than 42VDC at inverter TEST POINTS P-N.
NOTICE:
This document is customer property and is to remain with
this unit. Please return to service information pack upon
completion of work.
These instructions do not cover all variations in systems
or provide for every possible contingency to be met in
connection with the installation.
Should further information be desired or should particular
problems arise which are not covered sufficiently for the
purchaser’s purposes, the matter should be referred to your
installing dealer or local distributor.
WARNING:
This information is intended for use by individuals
possessing adequate backgrounds of electrical and
mechanical experience. Any attempt to repair a central air
conditioning product may result in personal injury and/or
property damage.
WARNING:ELECTRICALSHOCK
Failure to follow this warning could result in property
damage, severe personal injury, or death.
Disconnect all electric power, including remote disconnects
before servicing. Follow proper lockout/tagout procedures
to ensure the power cannot be inadvertently energized.

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
WARNING:PERSONALINJURY/ENVIRONMENTAL HAZARD
Any attempt to repair a central air conditioning product may
result in property damage, severe personal injury, or death.
These units use R-410A refrigerant which operates at
50 to 70% higher pressures than R-22. Use only R-410A
approved service equipment. Refrigerant cylinders are
painted a “Rose” color to indicate the type of refrigerant
and may contain a “dip” tube to allow for charging of liquid
refrigerant into the system. All R-410A systems with variable
speed compressors use a POE oil (VG74 or equivalent )
that readily absorbs moisture from the atmosphere. To
limit this ‘hygroscopic“ action, the system should remain
sealed whenever possible. If a system has been open to
the atmosphere for more than 4 hours, the compressor oil
must be replaced. Never break a vacuum with air and always
change the driers when opening the system for component
replacement.
CAUTION:HOTSURFACE
Do not touch top of compressor. May cause minor to
severe burning. Failure to follow this Caution could result in
property damage or personal injury.
CAUTION:HIGHPRESSURE
Failure to follow proper procedures can result in personal
illness or injury or severe equipment damage. System
contains oil and refrigerant under high pressure. Recover
refrigerant to relieve pressure before opening system.
WARNING:GROUNDINGREQUIRED
Failure to inspect or use proper service tools may result
in equipment damage or personal injury. Reconnect all
grounding devices. All parts of this product that are capable
of conducting electrical current are grounded. If grounding
wires, screws, straps, clips, nuts, or washers used to
complete a path to ground are removed for service, they
must be returned to their original position and properly
fastened.
CAUTION:BURNHAZARD
Failure to follow this warning will result in abrupt release
of system charge and may result in personal injury and/
or property damage. Extreme caution should be exercised
when applying gauges to service ports.
WARNING:ELECTRICALSHOCK
Failure to follow this warning could result in property
damage, severe personal injury, or death.
Grounding is essential before connecting electrical supply.
WARNING:
This product can expose you to chemicals including Lead
and Lead components, which are known to the State
of California to cause cancer and birth defects or other
reproductive harm. For more information go to www.
P65Warnings.ca.gov.
NOTICE:
A manufactured (mobile) home installation must conform
with the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or when this Standard
is not applicable, the Standard for Manufactured Home
Installations (Manufactured Home Sites, Communities and
Set-Ups), ANSI/NCS A225.1, and/or MH Series Mobile
Homes, CAN/CSA Z240.

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
2 Component Location
Figure 1
Outdoor Fan
RV
T3
T3L
T2
PT
T4
Indoor Fan
HPS
EEV
T1
Service
Valves
T5
Th
Comp
Fusible
Plug
Component Descriptions Component Descriptions
HPS High pressure switch T3L Condensor outlet temp. sensor
PT Pressure transducer Tf Radiator temp. sensor
T1 Return air temp. sensor Th Comp. return temp. sensor
T2 Indoor coil temp. sensor EEV Electronic expansion valve
T3 Condenser temp. sensor RV Reversing valve
T4 Ambient temp. sensor COMP Compressor
T5 Comp. discharge temp. sensor FP Fusible Plug
Table 1 Component Descriptions

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
3 Dimensions
3.1 Unit Dimensions
Figure 2
Front
Knock out hole
1-3/4" Dia
High voltage
conn. 1-1/8" Dia
Low voltage
conn. 7/8" Dia
Condensate drain
connection 3/4" NPT
(Trap required)
HeatPump Model L W H A B
BRBA-36HWD1N1-M18 50-11/16" 35-1/16" 46-13/16" 44-1/16" 11-3/4"
Table 2 Unit Dimensions
HeatPump Model Net Weight Gross Weight
BRBA-36HWD1N1-M18 400 lbs (182 kg) 420 lbs (191 kg)
Table 3 Unit Weights

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
3.2 Dimensions - Back and Bottom
Figure 3
Bottom view
Back view
OPTIONAL
SUPPLY AIR
OPENING
OPTIONAL
RETURN AIR
OPENING
SUPPLY
DUCT
OPENING
RETURN
DUCT
OPENING
21-9/16"
4-5/16"
2-9/16"
7-7/8"
21-9/16"4-3/16"
HeatPump Model C D E F G H
BRBA-36HWD1N1-M18 47-13/16" 32-1/4" 9-15/16" 15-7/8" 15-3/4" 9-3/4"
Table 4 Dimensions - Back and Bottom

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
3.3 Dimensions - Left and Top
Figure 4
Top view
11-3/4"
5-1/16"
Left side view
6-5/8" 6-5/8"

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Installation Instructions
Bosch 18 SEER2 Series Inverter Ducted Packaged Heat Pump - BTC 761703103 A (11.2022)
4 Installation
4.1 Pre-Installation
Before installation, carefully check the following:
1. Unit should be installed in accordance with national and local safety
codes, including but not limited to ANSI/NFPS No. 70, local plumbing and
wastewater codes and any other applicable codes.
2. For rooftop installation, be sure the structure has enough strength to
support the weight of unit. Unit must be installed on a field supplied roof
curb or rack and leveled.
3. For ground level installation, a field supplied level slab must be used.
4. Condenser airflow should not be restricted.
5. On applications when a roof curb is used, the unit must be positioned on
the curb so the front of the unit is tight against the curb. If the unit is to
be mounted on a curb in a downflow application, refer to Figure 14, and
convert panels prior to rigging and lifting. The panel removal process may
require the unit to be on the ground.
4.2 Rigging and Lifting
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Figure 5
Exercise care when moving the unit. Do not remove any packaging until the unit is
near the place of installation. Rig the unit by attaching chain or cable slings to the
lifting holes provided in the base rails. Spreader bars, whose length exceeds the
largest dimension across the unit, MUST be used across the top of the unit.
When rigging/lifting the unit, the minimum height between the top of the rigging
cables' connection point and top of unit should be 36 inches. Refer to Figure 5.
CAUTION:
Before lifting, make sure the unit weight is distributed
equally on the rigging cables so it will lift evenly.
CAUTION:
All panels must be secured in place when the unit is lifted.
The condenser coils should be protected from rigging
cable damage with plywood or other suitable material.
4.3 Location Restrictions
Ensure the top discharge area is unrestricted for at least 60 inches above the unit.
Do not locate outdoor unit near bedrooms since normal operational noise levels
may be disturbing to building occupants.
Position unit to allow adequate space for unobstructed airflow, wiring, and
serviceability.
Do not restrict outdoor airflow. An air restriction at either the outdoor air inlet or
the fan discharge may be detrimental to compressor life.
Do not place the unit where water, ice, or snow from an overhang or roof will
damage or flood the unit. Do not install the unit on carpeting or other combustible
materials. Slab-mounted units should be at least 2 inches (51 mm) above the
highest expected water and runoff levels. Do not use unit if it has been under water.
Maintain a distance of 24 inches between units. Position unit so water, snow, or ice
from roof or overhang cannot fall directly on unit.
See Figure 7 and Figure 8 for minimum clearance requirements.
Cold climate considerations (heat pump only)
NOTICE:
Precautions must be taken for units being installed in areas
where snow accumulation and prolonged below-freezing
temperatures occur.