Bosch BC, CA Installation, Operation And Maintenance Manual

CA Model

Installation, Operation and Maintenance Manual

2 | Contents

Contents

Model Nomenclature ...............................................2

Introduction: ............................................................3

Safety Considerations:.............................................3

Initial Inspection, Moving And Storage: ...................3

Installation: ..............................................................3

Piping: ......................................................................4

Condensate Piping:..................................................4

Hose Kits:.................................................................4

Electrical: .................................................................4

Cooling Tower/Boiler Applications: .........................4

Earth Coupled Systems: ..........................................5

Maintenance: ...........................................................5

System Checkout: ....................................................5

Unit Start-Up: ...........................................................5

Freeze Sensor ..........................................................6

Console Model

Unit Protection Module (Upm) ................................6

Power Random Start Up ..........................................6

Y Call ........................................................................6

High And Low Pressure Protection ..........................6

Ground .....................................................................7

Dip Switch Settings .................................................7

Freeze Protection .....................................................7

Brownout Protection ...............................................8

Condensation Overflow ...........................................8

Upm Sequence Of Operation (Soo) Flow Chart ......9

Wiring Diagrams ....................................................10

Operating Temperatures & Pressures Consoles ....13

Unit Check-Out Sheet ............................................15

Cuc Solid State ......................................................16

MODEL NOMENCLATURE

CA 012 - 1 U L C - XXX

SERIES:

CA - R-410A Refrigerant Slope Top

NOT USED

NOMINAL CAPACITY:

HEAT EXCHANGER:

C - COPPER

N - CUPRO-NICKEL

VOLTAGE DESIGNATION:

0 - 115/1/60

1 - 208/1/60 & 230/1/60

2 - 265/1/60

WATER CONNECTION LOCATION

L - LEFT

R - RIGHT

CONTROLS:

U - Manual/Auto Change Over (Unit Mounted)

R - Remote Thermostat

970-293 (2014/06) Subject to change without prior notice

Caution

CA Series

Note that a fault condition initiating a lockout will de-energize the compressor irrespective of which stage is engaged.

Caution

Caution

Caution

INTRODUCTION:

The console 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.

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

Caution

NOTE: Console units are designed for indoor installation in the conditioned space only. Do not install outdoors, in attics or in any other location that would subject the unit to extreme temperature or humidity or to corrosive environments. Doing so will inhibit performance, reliability and service life of the unit.

SAFETY CONSIDERATIONS:

Installation and servicing of this system can be hazardous due to system pressure, electrical components and moving par ts. Only trained and qualified service personnel should install and service this equipment. Untrained personnel can per form basic maintenance such as cleaning coils/cabinet or replacing filters.

WARNING: Before per forming service or maintenance operations on system, turn off main power to unit. On units with unit mounted controls, the On/Off switch DOES NOT disconnect the unit from main power. High voltage components or moving parts can cause injury or death.

When working on this 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 operations and place a fire extinguisher close to the work area.

This unit is designed to be operated with the cabinet, sub base and filter in place. Never operate unit without the cabinet and filter in place or with open access panels. Doing so can expose the operator to hazardous voltage and moving parts and can damage the equipment.

Introduction | 3

INITIAL INSPECTION, MOVING AND

STORAGE:

Inspect the carton or packaging of each console unit as it is received at the job site and before signing the freight bill. Note any damage or shortage on all copies of the freight bill. Concealed damage must be reported to the carrier within 24 hours of receipt.

Unit wiring diagrams and Installation/Operation manuals are provided with each unit. Read these manuals prior to star t up to become familiar with the unit and its operation.

Note that an Installation/start-up checklist is provided at the end of this manual to encourage thorough unit check- out at start-up.

Take care when moving the unit as most of 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.

If the equipment is not needed for immediate installation, it should be stored in its original packaging in a clean, dry area. Units must be moved and stored in an upright position, never lay the unit on it’s side. When storing, do not stack units.

INSTALLATION:

Before installing the unit, examine each pipe, fitting and valve; remove any dirt or debris found on or in these components. Use care when installing the system components to avoid damage to the cabinet finish or chassis.

1. After removing the console unit from its packaging remove the cabinet by removing the cabinet screws on either side of the unit and lifting the cabinet off the chassis. Set the cabinet aside and cover it (the console unit ’s pack aging can be used for this purpose).

2. Position the sub base directly on the finished floor.

Make sure the sub base is level (use shims if necessary). The sub base has a frame that supports the cabinet and may be secured to wall.

3. Position the chassis onto the sub base. Check and align electrical, water and condensate connections and secure to the sub base with 4 screws.

4. Before connecting the unit to water, make sure that the loop has been properly flushed. After flushing the system, connect piping or hoses to the proper supply, return and condensate connections. Refer to the piping section of this manual for more information

970-293 (2014/06) CA Series Subject to change without prior notice

Note that a fault condition initiating a lockout will de-energize the compressor irrespective of which stage is engaged.

Caution

4 | Piping Console Model

5. Make all necessary electrical connections to the unit.

Refer to the unit wiring diagram and the Electrical section of this manual.

CAUTION: When making electrical connections to the unit make sure that the power is disconnected. Failure to do disconnect power before connecting power wiring to the unit can result in serious injury or death and damage to the unit.

6. Make sure the unit’s washable filter is clean and installed in the sub base. Also make sure that the filter clip is in place.

of the chassis and two screws in the unit sub base.

PIPING:

SUPPLY AND RETURN PIPING:

The following items should be adhered to in addition to applicable piping codes.

• A drain valve at the base of each riser to enable proper flushing of the system at startup and during servicing.

• Shut-off/Isolation ball valves at the supply and return connections and unions at each unit to permit proper flow balancing and unit servicing.

• Strainers at the inlet of each circulating pump.

• Use of teflon tape on threaded pipe fittings to eliminate water leaks and insure against air entering the system.

• Flexible hose connections between the unit and the rigid system to eliminate the possibility of vibration transmission through the piping.

• Insulation is not normally required on supply and return piping for boiler tower installations except in unheated sections or outdoor runs.

• Insulation is required for closed-loop geo-thermal installations as loop temperatures may fall below the dew point and can even fall below the freezing point of water during heating season.

Caution

CONDENSATE PIPING:

Console units are designed with a blow-through configuration in the air handling section. This means that there is positive pressure at the unit drain pan and thus trapping is not required. Condensate is routed from the drain pan via a 5/8” non-pressure rated vinyl hose that is located below the supply and return water connections.

Though horizontal runs of condensate piping are usually too short to pose problems, horizontal runs should be pitched at least 1 inch for every 10 feet of piping. Avoid low spots or unpitched piping, as these areas can collect sediment and eventually block condensate flow.

970-293 (2014/06)

Always inspect both internal and external condensate piping for kinks that could block condensate flow.

HOSE KITS:

When using optional hose kits follow the manufacturer’s recommendations for installation. Never stretch or twist hoses and never use hoses that show external wear or damage or are suspected of having damage. Never exceed the manufacturer’s maximum working pressure recommendations.

ELECTRICAL:

CAUTION: Use only copper conductors for field installed electrical wiring. Always make sure that the power disconnect is open before per forming service on the unit’s electrical circuits.

Field wiring must comply with local and national fire, safety and electrical codes. Power to the unit must be within the operating voltage range indicated on the unit chassis nameplate or the performance data sheet.

Properly sized fuses or HACR breakers must be installed for branch circuit protection. See unit chassis name plate for maximum size.

Each chassis is supplied with a 2 x 4 junction box for power connection. Inside this box there are 2 pigtail leads for power wiring. The field ground is to be connected to the ground connection on the junction box.

On remote thermostat and master/slave units there are also 5 position terminal blocks for low voltage thermostat or slave unit connection. On remote thermostat units, connect the thermostat wires to the low voltage terminal block. On master/slave units connect the thermostat to the “Master ” terminal block of the lead unit and the

“Slave” terminal block to the “Master ” terminal block of the next unit, daisy chaining the units together as required. Note that there is no limit to the number of units that can be connected together in this manner as each unit provides it’s own low voltage power supply.

NOTE: All 208/230 volt (-1 voltage code) units are factory wired to 230 volts unless ordered other wise. In 208 voltage applications the transformer wiring may need to be switched from the 230 volt tap to the 208 volt tap. Cap all unused leads.

COOLING TOWER/BOILER

APPLICATIONS:

The cooling tower and boiler water loop temperature is usually maintained between 50°F and 100°F to assure adequate cooling and heating performance.

In the cooling mode, heat is rejected from the console unit into the water loop. A cooling tower provides evaporative cooling to the loop water thus maintaining a constant supply water temperature to the unit. When

Subject to change without prior notice CA Series

Earth Coupled Systems | 5 utilizing open cooling towers chemical water treatment is mandatory to ensure the water is free from corrosive elements. A secondary heat exchanger may also be used between the unit and the cooling tower water. In closed loop systems such as this it is imperative that all air be removed from the closed side of the system to insure against fouling of the heat pump water-to-refrigerant heat exchanger.

In the heating mode, heat is absorbed from the loop by the console unit. A boiler may be used to maintain the loop at the desired temperature.

No unit should be connected to the supply or return piping until the water system has been completely cleaned and flushed to remove any dirt, piping chips or other foreign material. Supply and return hoses should be connected together during this process to ensure the entire system is properly flushed. After the cleaning and flushing has taken place the unit may be connected to the water loop and should have all valves wide open.

EARTH COUPLED SYSTEMS:

Closed loop and pond applications require specialized design knowledge. No attempt at these installations should be made unless the contractor has received specialized training.

Anti freeze solutions are utilized when low evaporating conditions are expected to occur (I.E.: low loop temperatures in heating). Typical temperatures are 30°F fluid temperature in heating and 100°F in cooling.

MAINTENANCE:

1. Filter changes or cleanings are required at regular intervals. The time period between filter changes will depend upon type of environment the equipment is used in. In a single family home, that is not under construction, changing or cleaning the filter every 60 days is sufficient. I n other applications, such as motels, where daily vacuuming procedures a large amount of lint, filter changes may need to be as frequent as biweekly.

2. An annual “checkup” is recommended by a licensed refrigeration mechanic. Recording the performance measurements of volts,amps, and water temperature differences (both heating and cooling) is recommended. This data should be compared to the information on the unit’s data plate and the data taken at the original startup of the equipment.

3. Lubrication of the blower motor is not required.

4. The condensate drain should be checked annually by cleaning or flushing to insure proper drainage.

5. Periodic lockouts almost always are caused by air or water flow problems. The lockout (shut down) of the unit is a normal protective measure in the design of the equipment. If continual lockouts occur call a mechanic immediately and have them check for:

CA Series Subject to change without prior notice water flow problems, water temperature problems, air flow problems or air temperature problems. Use of the pressure and temperature charts for the unit may be required to properly determine the cause.

SYSTEM CHECKOUT:

• After completing the installation, and before energizing the unit, the following system checks should be made:

• Verify that the supply voltage to the heat pump is in accordance with the nameplate ratings.

• Make sure that all electrical connections are tight and secure.

• Check the electrical fusing and wiring for the correct size.

• Verify that the low voltage wiring bet ween the thermostat and the unit is correct.

• Verify that the water piping is complete and correct.

• Check that the water flow is correct, and adjust if necessary.

• Check the blower for free rotation, and that it is secured to the shaft.

• Verify that vibration isolation has been provided.

• Unit is serviceable. Be certain that all access panels are secured in place.

UNIT START-UP:

1. Set the thermostat to the highest setting.

2. Set the thermostat system switch to “COOL”, and the fan switch to the “AUTO” position. The reversing valve solenoid should energize. The compressor and fan should not run.

3. Reduce the thermostat setting approximately 5 degrees below the room temperature.

4. Verify the heat pump is operating in the cooling mode.

5. Turn the thermostat system switch to the “OFF” position. The unit should stop running and the reversing valve should de-energize.

6. Leave the unit off for approximately (5) minutes to allow for system equalization.

7. Turn the thermostat to the lowest setting.

8. Set the thermostat switch to “HEAT”.

9. Increase the thermostat setting approximately 5 degrees above the room temperature.

10. Verify the heat pump is operating in the heating mode.

11. Set the thermostat to maintain the desired space temperature.

12. Check for vibrations, leaks, etc...

970-293 (2014/06)

6 | Freeze Sensor Console Model

FREEZE SENSOR

This is optional and can be set to ignore or monitor a freeze sensor. There are 2 configurable freeze points,

30°F and 15°F. The unit will enter a soft lock out until the temperature climbs above the set point and the anti-short cycle time delay has expired. The freeze sensor may not provide protection in the case of loss of flow in the heating mode. A flow switch or pressure differential switch is recommended to prevent unit operation in case of loss of flow.

Caution

UNIT PROTECTION MODULE (UPM)

The Unit Protection Module (UPM) as shown in figure 1, is a printed circuit board (PCB) that inter faces with the thermostat or the digital direct controller.

The main purpose of this device is to protect the compressors by monitoring the different states of switches and sensors of each refrigerant circuit, this

If the controller has been completely powered down for more than 28 milliseconds, a random delay is initiated typically the unit will start between the time range of 270 and 300 seconds, this only if the controller is set to normal operation (test switch set to NO).

In order for the random sequence to initiate the unit power must be removed completely.

IMPORTANT: If the board is set to “ TEST ” mode through the “ TEST ” DIP switch SW1 delay will be 10 seconds.

ANTI SHORT CYCLE DELAY

This feature protects the compressor short cycling if the

Y call is set and removed.

The anti short cycle delay is 300sec delay on break during normal operation.

freezing of the water and refrigerant heat exchangers as well as condensate overflow when the appropriate sensors are installed (Figure 1).

Figure 1—Refer to unit wiring diagram for connection details

Alarm output is Normally Open (NO) dry contact. If 24

VAC output is needed R must be wired to the ALR- COM terminal; 24VAC will be available on the ALR-OUT terminal when the unit is in alarm condition. If pulse is selected the alarm output will be pulsed.

POWER RANDOM START UP

This feature prevents multiple units sharing same electrical circuit or network from starting at the same time.

It assures that Heat Pumps sharing the same electrical circuit do not demand high inrush currents simultaneously when star ting back up after a power failure.

970-293 (2014/06) Subject to change without prior notice

NOTE: If the board is set to test mode through the “ TEST ” DIP switch the delay will be 5 seconds.

Y CALL

The UPM will energize the compressor’s output (CC) in an event of a “Y” call from a thermostat or controller

(after the random start up and/or the anti short cycle delays have elapsed). Y input terminal must be energized with a 24 VAC signal.

HIGH AND LOW PRESSURE PROTECTION

The UPM monitors the state of the High and Low pressure

Switch inputs of each refrigerant circuit, HPC and LPC on the board respectively, these switches must be closed in order for the controller to energize the compressor output

(CC). The CC output will only be energized when the switches are closed and the anti short cycle (and /or random start up when applicable) has expired.

HIGH PRESSURE PROTECTION

If the HPC switch is open upon a Y call the UPM will not energize the CC output and therefore the compressor will remain off, the fault LED will flash one (1) time for the HPC and the alarm contact will remain off.

If the compressor is running in normal mode on a Y call and the high pressure switch opens, the UPM will shut down the compressor output and will keep it off until the switch closes and the anti short cycle has expired. The controller will keep track of the number of times the switch opens, if within one (1) hour period the switch opens the number of times set via the DIP switch the controller will shut the compressor down and per form a hard lockout condition under this condition the alarm contact will be energized.

The UPM allows the user to configure the counts that the

HPC will be allowed to open within one hour before the

UPM per forms a hard lockout on the compressor. The

CA Series

Caution

Low Pressure Protection | 7 user can select either two or four times by changing switch four (4) on the DIP switch SW1 (shown on table

3) on the UPM board.

LOW PRESSURE PROTECTION

If the LPC switch is open upon a Y call the UPM will not energize the CC output and therefore the compressor will remain off, the fault LED will flash two (2) times for the LPC and the alarm contact will remain off.

If the compressor is running in normal mode on a Y call and the low pressure switch opens, the UPM will keep the compressor running for two (2) minutes if the condition remains after this period of time the compressor will shut down and the UPM will start a soft lockout. The UPM will flash two (2) times for the LPC.

And the alarm contact will remain off.

If the switch closes, the UPM will start the compressor after the anti short cycle has expired UPM will energize the compressor output.

IMPORTANT: To exit the hard lockout the controller must be reset from the Y or R terminal by removing the power from the selected terminal. The user can choose which will be the reset point via the DIP switch SW1.

GROUND

The UPM controller takes its ground reference from the unit chassis which is connected to the controller via the

C- GND spade terminal.

DIP SWITCH SETTINGS

The DIP switch is used to configure most of the available features of the UPM as follows:

• Alarm mode, Constant or Pulse

• Reset mode, Y signal or R signal

• Lockout mode, two (2) or four (4) Strikes

• Test mode, Normal or Test operation

The settings shown below are factory default for most heat pump applications, however the Unit wiring diagram is the ultimate guide for factory DIP switch default settings (Figure 2).

The following table is available on the UPM board as well and it depicts the switch position and its associated functionality.

2

1

4

3

UPM Dip Switch Configuration

LOCKOUT 4

RESET

ALARM

TEST

R

CONT

YES

2

Y

PULSE

NO

Figure 3

SELECTABLE ALARM MODE

The UPM controller can be configured to have either a constant signal or a pulse.

If constant (CONT) is selected the UPM will provide a closed contact until the alarm is cleared.

If pulsed (PULSE) is selected the UPM will sequence the alarm contact with the fault LED flashes.

FREEZE PROTECTION

The default setting for the freeze limit trip is 30°F, however this can be changed to 15°F by cutting the R42 resistor located on top of the DIP switch SW1.

The UPM controller will constantly monitor the refrigerant temperature with the sensor mounted close to the condensing water coil between the thermal expansion valve and water coil as shown in figure 4. If temperature drops below or remains at the freeze limit trip for 30 seconds, the controller will shut the compressor down and enter into a soft lockout condition. Both the status

LED and the Alarm contact will be active. The LED will flash (three (3) times) the code associated with this alarm condition.

CA Series

Lockout

Reset

Alarm

Test

Figure 2

Subject to change without prior notice

Figure 4 Freeze Protection Sensor

Freeze

Protection

Sensor

970-293 (2014/06)

8 | Brownout Protection

BROWNOUT PROTECTION

The UPM controller will constantly monitor the power supply, if the nominal voltage drops below 25% of its value. (18 VAC approximately), the unit will enter brownout protection mode. The compressor CC output will be de-energized and the unit will enter the soft lockout mode.

The controller will not monitor the power supply during the first 500 milliseconds of compressor start up to avoid noise and false alarms.

Once the UPM detects a brownout condition its fault LED will flash five (5) times as error code indication.

CONDENSATION OVERFLOW

The UPM controller continuously monitors the drain pan for high condensate water level, and to do so it utilizes a sensor and identifies an alarm condition when the sensor

’s impedance drops below 230KΩ +/- 15 % (ONLY when condensate sensor option is present). Once the UPM senses this resistance value it enters into a hard lockout and reports the correspondent code via its status LED (4 flashes).

To exit the hard lockout water has to return to its normal level the UPM has to be reset by removing the power from the Y terminal (R if set on the DIP switch) the compressors will be turned on after anti short cycle expires.

Console Model

970-293 (2014/06) Subject to change without prior notice CA Series

UPM SEQUENCE OF OPERATION (SOO) FLOW CHART

UPM Sequence of Operation (SOO) Flow | 9

Chart

START

YES

R = 24VAC Y1 = ON

NO

YES

POWER/ SWITCHES/SENSOR

STATUS CHECK

RESET ON

Y

NO

YES

CLEAR FAULTS

RESET ON R

NO

V > 18VAC

NO

YES

HPC =

CLOSED

NO

YES

LPC

=CLOSED

NO

YES

START

TIMER

FRZ >TEMP

LIMIT

NO

YES

START

TIMER

BLINK CODE ON STATUS LED

SOFT LOCKOUT

RECORD ALARM

START COUNTER (IF APPLICABLE)

COUNTER

NEEDED?

NO

YES

LOCKOUT CAN BE SET

TO 4 VIA DIP SWITCH

NO

COUNT = 2

OR

COUNT = 4

YES

TIME > 120

SEC

YES

NO

BLINK CODE

ON STATUS LED

NO

HARD

LOCKOUT?

YES

BLINK CODE ON STATUS LED

DISPLAY OUTPUT = PULSE

ALR OUTPUT = ON/PULSE

TIME > 30

SEC

YES

NO

CC OUTPUT = OFF

CA Series

CON > 0

NO

YES

INITIAL

POWER UP

NO

YES

START

ANTI SHORT CYCLE

NO

START

RANDOM START UP

Subject to change without prior notice

YES

CC OUTPUT = ON

970-293 (2014/06)

10 | Wiring Diagram

WIRING DIAGRAM

Console Model

970-293 (2014/06) Subject to change without prior notice CA Series

WIRING DIAGRAM

Wiring Diagram | 11

CA Series

For Reference Only

Actual unit wiring may vary from this example.

Always refer to the wiring diagram attached to the unit.

Subject to change without prior notice 970-293 (2014/06)

12 | Wiring Diagram

WIRING DIAGRAM

Console Model

970-293 (2014/06) Subject to change without prior notice CA Series

FLUID

FLOW

GPM

2

3

2

3

2

3

1.5

2

1.5

2

1.5

2

1.5

2

1.5

2

1.5

2

1.5

2

1.5

2

2

3

2

3

2

3

2

3

2

3

MODEL

009

012

100˚

30˚

40˚

70˚

80˚

90˚

ENTERING

FLUID

TEMP, ˚F

30˚

40˚

50˚

60˚

80˚

90˚

100˚

50˚

60˚

70˚

Operating Temperatures & Pressures | 13

Operating Temperatures & Pressures Consoles

Consoles

125-130

126-131

127-132

125-130

132-137

130-135

136-141

135-140

139-144

137-142

141-145

139-144

140-145

135-140

142-147

137-142

145-150

143-152

152-157

150-155

154-159

152-158

156-160

154-159

SUCTION

PRESSURE

PSIG

OPERATING DATA R-410A

285-295

275-285

295-305

285-295

315-325

305-315

345-355

335-345

370-380

360-370

415-425

410-420

290-300

270-280

320-320

300-310

335-345

325-335

360-370

350-360

385-395

375-385

435-445

425-435

COOLING

DISCHARGE

PRESSURE

PSIG

FLUID

TEMP

RISE, ˚F

AIR

TEMP

DROP, ˚F

SUCTION

PRESSURE

PSIG

120-125

125-130

120-125

125-130

12.8-14.2

18.1-20.0

135-140

10.5-11.6

18.1-20.0

130-135

12.6-14.0

17.4-19.2

135-140

9.8-10.8

12.4-13.8

16.7-18.5

155-165

9.7-10.7

17.6-19.4

140-145

17.0-18.8

160-170

12.4-13.7

16.2-17.9

165-175

9.5-10.5

16.3-18.1

170-175

12.2-13.4

15.5-17.1

9.4-10.4

15.7-17.3

12.1-13.3

14.8-16.4

9.3-10.3

15.1-16.7

110-115

115-120

110-115

115-120

12.5-13.9

20.0-22.2

115-120

10.3-11.3

20.2-22.4

120-125

12.4-13.7

19.4-21.4

125-130

10.2-11.2

19.7-21.7

130-135

12.3-13.5

18.9-20.9

145-150

10.1-11.1

19.1-21.1

150-155

12.2-13.4

18.3-20.3

155-160

10.0-11.0

18.5-20.5

160-165

12.1-13.3

17.8-19.6

9.9-10.9

12.0-13.2

17.3-19.1

9.8-10.8

18.1-20.0

17.5-19.3

305-315

305-315

310-315

310-315

315-320

320-325

325-330

330-335

335-240

340-350

345-350

350-360

DSICH

PRESS.,

PSIG

295-305

300-310

300-305

300-310

305-310

310-320

315-320

320-330

325-335

330-340

335-345

340-350

HEATING

4.6-5.0

3.8-4.2

5.4-6.0

4.5-4.9

6.3-6.9

5.1-5.7

7.0-7.8

5.8-6.4

7.9-8.7

7.4-8.2

8.7-9.7

7.1-7.9

FLUID

TEMP

DROP, ˚F

4.3-4.7

3.3-3.7

5.2-5.8

4.1-4.5

6.2-6.8

4.8-5.3

7.1-7.9

5.5-6.1

8.2-9.0

6.3-6.9

9.0-10.0

7.0-7.8

15.3-16.9

15.6-17.2

17.4-19.2

17.8-19.6

19.5-21.5

19.9-21.9

21.5-23.7

21.9-24.2

23.5-25.9

23.9-26.5

25.6-28.2

26.0-28.8

AIR

TEMP

RISE, ˚F

12.2-13.4

12.4-13.8

14.3-15.8

14.6-16.2

16.2-18.0

16.7-18.5

18.3-20.3

18.8-20.8

20.0-22.2

20.9-23.1

22.3-24.7

22.9-25.3

CA Series Subject to change without prior notice

970-293 Revised 05-12

970-293 (2014/06)

MODEL

ENTERING

FLUID

TEMP, ˚F

30˚

015

40˚

50˚

60˚

70˚

80˚

90˚

100˚

FLUID

FLOW

GPM

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

SUCTION

PRESSURE

PSIG

127-132

125-130

129-135

127-132

135-140

133-138

142-147

140-145

144-149

143-148

147-152

145-150

This chart shows approximate temperatures and pressures for a unit in good repair.

The values shown are meant as a guide only and should not be used to estimate system charge. This chart assumes rated air flow and 80º d.b./67º w.b. entering air temperature in cooling, 70º d.b. entering air temperature in heating. Heating data at entering fluid temperatures below 50º assumes the use of antifreeze.

OPERATING DATA R-410A

275-285

265-275

310-320

295-305

330-340

320-330

355-365

345-365

380-390

370-380

430-440

420-430

COOLING

DISCHARGE

PRESSURE

PSIG

FLUID

TEMP

RISE, ˚F

AIR

TEMP

DROP, ˚F

SUCTION

PRESSURE

PSIG

110-115

110-115

115-120

115-120

12.4-13.8

21.8-24.0

115-120

9.7-10.7

22.0-24.4

120-125

12.2-13.4

20.7-22.9

125-130

9.4-10.4

21.0-23.2

130-135

11.8-13.0

19.8-21.8

145-150

9.1-10.1

20.0-22.2

150-155

11.5-12.7

18.7-20.7

155-16-

8.9-9.9

19.0-21.0

160-165

11.1-12.3

17.7-19.5

8.6-9.6

18.0-19.8

10.8-12.0

16.7-18.5

8.4-9.2

16.9-18.7

DSICH

PRESS.,

PSIG

280-290

290-295

295-300

300-305

305-310

310-315

315-320

320-325

325-330

330-340

335-340

345-350

HEATING

FLUID

TEMP

DROP, ˚F

3.6-4.0

2.9-3.2

4.4-4.8

3.4-3.8

5.2-5.8

4.1-4.5

6.1-6.7

4.8-5.3

6.9-7.7

5.4-6.0

7.8-8.6

6.0-6.6

AIR

TEMP

RISE, ˚F

13.6-15.0

13.9-15.3

15.8-17.4

16.2-17.9

18.1-20.1

18.5-20.5

20.5-22.7

21.1-23.3

23.0-25.4

23.6-26.0

25.3-27.9

25.9-28.7

As a result of continuing research and development, specifications are subject to change without notice.

970-293 (2014/06) Subject to change without prior notice

970-293 Revised 05-12

CA Series

UNIT CHECK-OUT SHEET

Customer Data

Customer Name ________________________________________________

Address ________________________________________________________

__________________________________________________________________

Phone __________________________________________________________

Unit Nameplate Data

Unit Make ______________________________________________

Model Number _________________________________________

Refrigerant Charge (oz) _____________________

Date __________________________________

Unit Number _________________________

Serial Number_______________________________

Maximum Fuse Size (Amps) ________________

Minimum Circuit Ampacity (Amps) _________

Operating Conditions

Entering / Leaving Air Temp

Entering Air Measured at:

Leaving Air Measured at:

Entering / Leaving Fluid Temp

Fluid Flow (gpm)

Compressor Volts / Amps

Blower Motor Volts / Amps

Source Fluid Type

Fluid Flow (gpm)*

Fluid Side Pressure Drop*

Suction / Discharge Pressure (psig)*

Suction / Discharge Temp*

Suction Superheat*

Entering TXV / Cap Tube Temp*

Liquid Subcooling*

* Required for Troubleshooting ONLY

Cooling Mode Heating Mode

______________ / _____________ ______________ / _____________

_______________________________ ______________________________

_______________________________ ______________________________

______________ / _____________ ______________ / _____________

______________________________ ______________________________

______________ / _____________ ______________ / _____________

______________ / _____________ ______________ / _____________

_______________________________ ______________________________

______________________________ ______________________________

______________________________ ______________________________

______________ / _____________ ______________ / _____________

______________ / _____________ ______________ / _____________

_______________________________ ______________________________

_______________________________ ________________________________

_______________________________ ________________________________

Auxiliary Heat

Unit Make ______________________________________________

Model Number _________________________________________

Max Fuse Size (Amps) __________________________________

Volts / Amps_____________________ /______________________

Entering Air Temperature _______________________________

Leaving Air Temperature _______________________________

Serial Number_______________________________

Bosch Group 601 N.W. 65th Court Fort Lauderdale, FL 33309

Phone: 866-642-3198 Fax: 800-776-5529 http://www.bosch-climat.us

CA Series Subject to change without prior notice 970-293 (2014/06)

16 | CUC Solid State

CUC SOLID STATE

CONSOLE UNIT CONTROLLER

Designed to enhance the unit operation with more flexibility, accurate control and operating modes the CUC provides an increased level of comfort in the conditioned space together with solid state reliability and ease of operation.

The same functions of the proven UPM module are incorporated into the CUC for unit protection.

CUC controllers are standard on all console units except for remote options.

• Tactile touchpad for temperature, fan and mode adjustment.

• Digital display of temperature in either degrees

Fahrenheit or Celsius.

• LED Display provides indication for unit operating mode as well as fan speed and fault indication for high or low pressure lockout.

• Adjustable Temperature Set point from 60° F through 80° F (15.5° C through 26.7° C ).

• Adjustable Temperature Differential between 1° F and 6° F (0.6° C and 3.3° C).

• Selectable options

- Manual/Automatic changeover

- Fan speed – High or Low

- Fan operation constant fan or cycling with compressor

• Additional features

- 5 minute anti short cycling delay

- Random start

- 90 second low pressure bypass timer prevents nuisance lockouts during cold winter start up

- Intelligent reset allows the unit to automatically restart after 5 minutes if a fault is no longer active

Console Model

970-293 (2014/06) Subject to change without prior notice CA Series

Notes | 17

CA Series Subject to change without prior notice 970-293 (2014/06)

18 | Notes Console Model

970-293 (2014/06) Subject to change without prior notice CA Series

Notes | 19

CA Series Subject to change without prior notice 970-293 (2014/06)

601 N.W. 65th Court

Ft. Lauderdale, FL 33309

Phone: 866-642-3198

Fax: 954-776-5529 www.bosch-climate.us

970-293 (2014/06) or