Bosch CA User manual

Installation, Operation and Maintenance Manual
CA Model
8733942456 (2016/04)

2| CA Model
CA Model8733942456 (2016/04) Subject to change without prior notice
CONTENTS
Model Nomenclature..........................................................3
Key to Symbols...................................................................4
Safety Warnings.................................................................4
Standard Package..............................................................5
Initial Inspection................................................................5
General Description...........................................................5
Moving and Storage...........................................................5
Location............................................................................5
Installation........................................................................6
Piping ............................................................................... 6
Supply and Return Piping...............................................6
Condensate Piping........................................................6
Hose Kits.....................................................................6
Electrical ..........................................................................7
Safety Devices and the UPM Controller ...............................7
CUC Solid State Console Unit Controller)...........................9
Application considerations...............................................10
Well Water Systems ...................................................10
Ground Water Loop Applications...................................10
Water Quality...................................................................11
Water Quality Table.....................................................12
UPM Sequence of Operation.............................................13
Sequence of Operation ....................................................14
Cooling Mode............................................................14
Heating Mode............................................................14
Cooling Tower/Boiler Systems.......................................... 14
Geothermal (Earth-Coupled) Systems .......................... 14
System Checkout.............................................................14
Unit Start-up ...................................................................15
Troubleshooting ..............................................................15
Blower Performance Data.................................................17
PSC Motor ( Electrical Data Table-PSC Blower Motor)..........18
Water Side Pressure Drop.................................................18
Operating Temperatures & Pressures.................................19
Wiring diagrams ..............................................................20
Schematic.......................................................................22
Dimensions......................................................................23
Standard Length.........................................................23
Extended Length........................................................24
Unit Check-Out Sheet ...................................................... 25
Customer Data.......................................................... 25
Unit Nameplate Data.................................................. 25
Operating Conditions................................................. 25
Auxiliary Heat ........................................................... 25
Maintenance................................................................... 26
Information On Decommissioning......................................26
Terminology ................................................................... 27

Model Nomenclature | 3CA Model
8733942456(2016/04)CA Model
MODEL NOMENCLATURE
Figure # 1
CA 018 - 1 UL C -48 0PE R A -XG A MXXXS 7MXX X7XX XXSB A
CA Code String Rev Level Size Channel
009 B - Bosch
012 015 Standard/Special 018 S - Standard
Voltage AIR FILTRATION
0 115/60/1 7 - Cleanable Mesh Filter 1 208-230/60/1 2 265/60/1 Water Flow Control Options
X - None
Cabinet Conguration F - 1/2" FPT ttings
UL - Unit Mounted Controller, Left Hand Water UR - Unit Mounted Controller, Right Hand Water Controls
RL - Remote Thermostat, Left Hand Water X - Standard RR - Remote Thermostat, Right Hand Water M - DDC - Multi-Protocol (BacNET, Modbus, N2)
L - DDC - LonWorks
Coax Options
C - Copper Transformer N - Cupro-Nickel 4 - 40 VA
7 - 75 VA
Cabinet Width
48 - 48" Refrigeration Circuit Options 63 - 63" X - None
XX - N/A S - Straight Cool
Supply Air Conguration General Electrical Options (up to 5 available per unit)
0 - N/A A - EMS relay
B - Blower Monitor Relay
Fan/Motor Options C - Compressor Monitor Rela
y
P - Standard PSC E - Pump/valve relay
J - Disconnect Switch
Air Coil M - Wire to 208 V E - Epoxy Coated O - Outside Air Damper
X - As default for non used electrical codes
Cabinet Construction
R - Standard Cabinet and Sub-base (48") Application
S - No Cabinet, Standard Sub-base G - EXTENDED RANGE w/ SHRADER VALVE (Geothermal)
T - No Cabinet or Sub-base (chassis onl
y
)
Electric Heat
Revision Level X - None
A - Current

4| Key to symbols CA Model
CA Model8733942456 (2016/04) Subject to change without prior notice
KEY TO SYMBOLS
Warnings
The following keywords are defined and can be used in
this document:
•NOTICE Indicates a situation that could result in
damage to property or equipment.
•CAUTION Indicates a situation that could result in
minor to medium injury.
•WARNING Indicates a situation that could result in
severe injury or death.
•DANGER Indicates a a situation that will result in
severe injury or death.
Important Information
SAFETY 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 s are not
taken.
This symbol indicates important information where
there is no risk to property or people.
NOTICE: This unit is design to be operated
with the cabinet, sub base and filter in
place. Never operate unit with open access
panels Doing so can expose the operator to
hazardous voltage, moving parts and can
damage the equipment.
WARNING: Installation and servicing of this
equipment can be hazardous due to system
pressure and electrical components. Only
trained and qualified personnel should
install, repair, or service the equipment.
DANGER: Before performing service or
maintenance operations on the system, turn
off main power to the unit. On units with
mounted controls, the On/Off switch DOES
NOT disconnect the unit from main power.
High voltage components or moving parts
will cause injury or death.
CAUTION: When working on equipment,
always observe precautions described in
the literature, tags, and labels attached to
the unit. Follow all safety codes. Wear
safety glasses and work gloves. Use a
quenching cloth for brazing, and place a fire
extinguisher close to the work area.
NOTICE: All refrigerant discharged from this
unit must be recovered WITHOUT
EXCEPTION. Technicians must follow
industry accepted guidelines and all local,
state, and federal statutes for the recovery
and disposal of refrigerants. If a compressor
is removed from this unit, refrigerant circuit
oil will remain in the compressor. To avoid
leakage of compressor oil, refrigerant lines
of the compressor must be sealed after it is
removed.
NOTICE: To avoid the release of refrigerant
into the atmosphere, the refrigerant circuit
of this unit must be serviced only by
technicians who meet local, state, and
federal proficiency requirements.
NOTICE: To avoid equipment damage, DO
NOT use these units as a source of heating
or cooling during the construction process.
Doing so may affect the unit’s warranty.
The mechanical components and filters will
quickly become clogged with construction
dirt and debris, which may cause system
damage.

Standard Package | 5CA Model
8733942456(2016/04)CA Model
STANDARD PACKAGE
Figure # 2
[1] CA Model Water-to-Air Heat Pump
[2] Installation and Operation Manual
INITIAL INSPECTION
Please inspect the product carefully for any defects or
discrepancies. Should you identify any issue, contact the
Bosch Wholesaler / Distributor you purchased the unit
from.
GENERAL DESCRIPTION
CA Model Water source Heat Pumps are designed for
use as decentralized room terminals that are field
connected to a closed-circuit piping loop within a
structure. Typically these units are installed in perimeter
zones and are ideal for installations where ducted
systems are impractical.
CA Series provide the best combination of performance
and efficiency available. Safety devices are built into
each unit to provide the maximum system protection
possible when properly installed and maintained.
All units are designed for boiler/tower systems
geothermal closed loop applications and can operate
with fluid temperatures as low as 25°F in heating and as
high as 110°F in cooling. Units are available in 3/4, 1, 1-
1/4 and 1-1/2 tons nominal capacity in cooling. Refer to
the unit specification sheet for precise performance
figures at various entering air and water conditions.
All CA water to Air Heat Pumps conform to UL1995
standard and are certified to CAN/CSA C22.2 No 236 by
Intertek-ETL.
MOVING AND STORAGE
If the equipment is not needed for immediate
installation upon its arrival at the job site, it should be
left in its shipping carton and stored in a clean, dry area.
Units must only be stored or moved in the normal
upright position as indicated by the “UP” arrows on each
carton at all times.
LOCATION
Locate the unit in an indoor area that allows easy
removal of the filter and access panels, and has enough
room for service personnel to perform maintenance or
repair. Provide sufficient room to make fluid, electrical
connection(s). If the unit is located in a confined space,
provisions must be made for return air to freely enter the
unit’s. Allow adequate room below the unit for a
condensate drain trap and do not locate the unit above
supply piping.
Heat Pump operating under extreme conditions will
have limitations on air/fluid flow rates and/or
temperatures.
1
2
50° Minimum Entering Water Temperature (EWT)
forwellwaterapplications with sufficient water flow
to prevent freezing. Antifreeze solution is not
required for all closed loop applications. Cooling
Tower/Boiler and Geothermal applications should
have sufficient antifreeze solution to protect against
extreme conditions and equipment failure. Frozen
water coils are not covered under warranty.
NOTICE: This product should not be used
for temporarily heating/cooling during
construction. Doing so may Affect the units
warranty.
CAUTION: Do not stack units.
Take care when moving the unit ‘s weight is
located on the left (compressor) end.
Always store and move unit in an upright
position. Take care to protect the unit
cabinet and sub base when moving or
storing. Never move or lift unit by its water
connections. Units must be moved and
stored in an upright position, never lay the
unit on it’s side.
NOTICE: These units are not approved for
outdoor installation; therefore, they must
be installed inside the structure being
conditioned space. Do not locate in areas
that are subject to freezing.