Bosch FHP UPM I Manuale utente

I/O ZONE 560/583

UPM I

INSTALLATION

AND OPERATION

MANUAL

UNIT PROTECTION MODULE HARDWARE OPERATION

IMPORTANT: This manual is for UPM board part numbers 8733 800 259. See controller label

as shown in figure 1 to verify correct part number.

TABLE OF CONTENTS

Specifications.....................................................................................................................3

Unit Protection Module (UPM)...........................................................................................4

Power Random Start Up ...............................................................................................5

Anti short cycle delay ...................................................................................................5

Y Call..........................................................................................................................5

High and Low pressure protection .................................................................................5

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

DIP Switch Settings......................................................................................................7

Selectable Alarm Mode .................................................................................................7

Freeze protection.........................................................................................................8

Brownout protection.....................................................................................................8

Condensation overflow .................................................................................................8

UPM Sequence of Operation (SOO) Flow Chart ..................................................................9

Specifications

Power: 24VAC ± 10%, 50-60Hz, 1.4 VA of standby power consumption

(Single Class II 70VA or 100VA option available)

Physical: Printed Circuit Board and plastic stand offs.

Environmental

Operating Range: -40° to 176°F (-40 °C to 80°C); 10 to 90% relative humidity, non-condensing

All controls are conformal coated for environmental protection.

Digital Outputs: Two digital outputs relay contacts rated at 10A resistive @ 125 VAC; One dedicated for the

compressor contactor 24VAC when “ON” and one dedicated for alarm purposes dry

contact Normally Open (NO)

Inputs: Four (4) inputs. Dedicated inputs for:

High Pressure Switch (HPC)

Low Pressure Switch (LPC)

Freeze Sensor (FREEZE) 10 K @ 77F Thermistor

Condensate Overflow Sensor (CON) 230 K +/- 15%

Compressor Call (Y) Signal

Status Indication: Visual (LED) status of power and alarms status indication.

Protection: Surge and transient protection circuitry.

Weight: 0.14 lbs. (0.07 Kg).

Overall

Dimensions: 4-1/4” (width) by 3-3/4” (height) by 1-3/4” (recommended panel depth).

108mm (width) by 95mm (height) by 32mm (recommended panel depth).

Listed By: UL

Mounting Hole

Dimensions: Four mounting holes in rectangular pattern with dimensions between them as follows:

3-3/4” (width) by 3-1/4” (height).

95mm (width) by 83 mm (height).

Unit Protection Module (UPM)

The Unit Protection Module (UPM) as shown in figure 1, is a printed circuit board (PCB) that

interfaces 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, this device provides time delays and protects the unit against freezing

of the water and refrigerant heat exchangers as well as condensate overflow when the

appropriate sensors are installed.

Figure 1 - UPM Single Stage

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

The anti short cycle delay is 300sec delay

on break during normal operation.

same electrical circuit or network from

tarting at the same time.

not demand high

rush currents simultaneously when starting

e than 28

illiseconds, a random delay is initiated

27 3 t

t be removed completely.

cycle delay

feature protects the compressor short

all from a

ermostat or controller (after the random

tart up and/or the anti short cycle delays

have elapsed). Y input terminal must be

d with a 24 VAC signal.

energize the compressor output (CC). The

the

It assures that eat Pumps sharing the

same electrical circuit do

back up after a power failure.

If the controller has been completely

powered down for mor

typically the unit will star between the time

range of 0 and 00 seconds, his 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 mus

Anti short

This

cycling if the Y call is set and removed.

Y Call

The UPM will energize the compressor’s

utput (CC) in an event of a “Y” co

energize

High and Low pressure protection

The UPM monitors the state of the High and

Low pressure Switch inputs, HPC and LPC

on the board respectively, these switches

must be closed in order for the controller

CC output will only be energized when

switches are closed and the anti short cycle

(and /or random start up when applicable)

has expired.

NOTE:

If the board is set to test mode through the “TEST”

DIP switch the delay will be 5 seconds.

IMPORTANT:

If controller is set to “TEST” mode through the

“TEST” DIP switch SW1 delay will be 10 seconds.

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 perform 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 performs a

hard lockout on the compressor. The 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.

High pressure protection

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

l f e

IP switch default settings.

Figure 2 - Dip switch settings

le on the UPM

nstant signal or a pulse.

is selected the UPM will

The DIP switch is used to configure most of

the avai able eatures of th 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 D

The following table is availab

board as well and it depicts the switch

position and its associated functionality.

Selectable Alarm Mode

The UPM controller can be configured to

have either a co

If constant (CONT) is selected the UPM will

provide a closed contact until the alarm is

cleared.

If pulsed (PULSE)

sequence the alarm contact with the fault

ED flashes. L

UPM DIP SWITCH CONFIGURATION

4 LOCKOUT 4 2

3RESET R Y

2 ALARM CONT PULSE

1TEST YES NO

Figure 3 - DIP switch table

1234

LOCKOUT

RESET

ALARM

TEST

ze protection

lt setting for the freeze limit trip is

l constantly monitor

e refrigerant temperature with the sensor

4. If

the

r down and enter into

nd the Alarm contact will be active. The

Free

The defau

30°F, however this can e changed to 15°F

by cutting the R42 resistor located on top of

the DIP switch SW1.

The UPM controller wil

mounted close to the condensing water coil

between the thermal expansion valve and

water coil as shown in figure

temperature drops below or remains at

freeze limit trip for 30 seconds, the controller

will shut the compresso

a soft lockout condition. Both the status LED

LED will flash (three (3) times) the code

associated with this alarm condition.

Figure 4 reeze sensor locat

Brownout protection

The UPM controller will constantly monitor

the power supply, if the nominal voltage

tput

be de-energized and the unit will enter

e co not monitor the power

pply du first 500 illisecon f

mpress p to av e a

the UPM detects a brownout condition

ive (5) times as error

code indication.

ondensation overflow

tors

e drain pan for high condensate water

impedance drops below 230KΩ +/-

5 % (ONLY when condensate sensor

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.

drops below 25% of its value. (18 VAC

approximately), the unit will enter brownout

protection mode. The compressor CC ou

will

the soft lockout mode.

Th ntroller will

su ring the m ds o

co or start u oid nois nd false

alarms.

Once

its fault LED will flash f

The UPM controller continuously moni

level, and to do so it utilizes a sensor and

identifies an alarm condition when the

sensor’s

option is present). Once the UPM senses

this resistance value it enters into a hard

lockout and reports

ion - F

UPM Sequence of Operation (SOO) Flow Chart

601 N.W. 65 Court, Ft. Lauderdale, FL 33309.

Phone: 954-776-5471 Fax: 954-776-5529

www.fhp-mfg.com

6 720 220 321 REV. 6-11

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