Danfoss OP-LPQM, OP-MPXM Installation guide

Optyma™ Plus

OP-LPQM, OP-MPXM

Name plate

AOP-MPXM034MLP00G

B114X4261

C		Application	MBP
D		Refrigerant	(1) R404A R507 R448A/R449A
E				R407A/R407F/R452A
		M.W.P. HP	(1) 28 bar
		M.W.P. LP	(1) 7 bar
F		Voltage	230 V ~ 1N ~ 50Hz
		LRA	60 A
		OIL INSIDE	POE 46
G		Serial No.	123456CG2816
		EAN No.		xxxxxxxxxxxxxx

MADE IN INDIA

IP 54

(2)R134a

R513A

(2) 23 bar

(2) 5 bar

MCC 19 A

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Danfoss A/S, 6430 Nordborg, Denmark

A: Model

B: Code number

C: Application, Protection D: Refrigerant

E: Housing Service Pressure (Maximum working pressure)

F: Supply voltage, Locked Rotor Ampere, Maximum Current Consumption

G: Serial Number and bar code

U

Q	W
Y	Z
R
	X

Picture 1 : Minimum mounting distances

Q: Air in	R: Air out
	Unit	W	X	Y	Z
		[mm]	[mm]	[mm]	[mm]
	Housing 4	250	900	700	700
(Code n° 114X34-- or 114X44--)

V

T

U

	V
	T: Mounting brackets for stacked mounting (not supplied)
	U: M8 bolts for stacked mounting (supplied)
	V: Mounting bolts (not supplied)
Picture 2 : Stacked mounting

The condensing unit must only be used for its designed purpose(s) and within its scope of application.

Under all circumstances, the EN378 (or other applicable local safety regulation) requirements must be fulfilled.

The condensing unit is delivered under nitrogen gas pressure (1 bar) and hence it cannot be connected as it is; refer to the «installation» section for further details.

The condensing unit must be handled with caution in the vertical position (maximum offset from the vertical : 15°)

Installation and servicing of the condensing units by qualified personnel only. Follow these instructions and sound refrigeration engineering practice relating to installation, commissioning, maintenance and

service.

Picture 3 : Electronic controller display

Compressor running

Crankcase heater on

Fan running

Temperature value for suction pressure. Push lower button to switch to temperature value for condensing pressure

Picture 4 : Normal wiring		Picture 5 : Temporary wiring

© Danfoss | Climate Solutions | 2021.10

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Instructions

Designation system for the Optyma™ Plus range

OP - MPXM

034

ML

P06

G

1 2 3 4

5

6

7

8

Version control

1

Application

M = MBP

Optyma™ Plus

(P06)

L = LBP

IP level

IP54

2

Package

Compressor technology

Scroll/ Reciprocating

Condensing unit family: P = Optyma™ Plus

Control box (pre-wired E-panel)

yes

Microchannel condenser

yes

3

Refrigerant

Fan speed controller*

yes

Q = R452A, R404A/R507

X = R404A/R507, R134a, R407A, R407F, R448A, R513A

Main switch (circuit breaker)

yes

R449A,R452A

Supply monitoring relay

-

4

Condenser

Filter drier (flare connections)

yes

M = Microchannel heat condenser

Sight glass

yes

Crankcase heater

yes

5

Swept volume

Displacement in cm3: Example 034 = 34 cm3

HP/LP adjustable pressostat

Electronic

Fail safe mini-pressostat

Mechanical

6

Compressor platform

Access door(s)

yes

ML = Fixed speed scroll MLZ

Acoustic insulation

yes

LL = Fixed speed scroll LLZ

Condensing unit electronic controller

yes

7

Version

Network connectivity

yes

P06: Optyma™ Plus with PRV

Stack mounting

yes

8

Voltage code

Discharge gas thermostat

yes

E = 400V/3-phase/50Hz compressor & 230V/1-phase fan

HP/LP Alarm

yes

Pressure relief valve

yes

* Inbuilt function within Condensing unit electronic controller

1 – Introduction

These instructions pertain to Optyma™ Plus condensing units OP-LPOM, & OP-MPXM used for refrigeration systems. They provide necessary information regarding safety and proper usage of this product.

The condensing unit includes following:

•Microchannel heat exchanger

•Reciprocating or scroll compressor

•Receiver with stop valve

•Ball valves

•Sight glass

•High & low pressure switches

•Replaceable filter drier

•Electronic controller

•Main circuit breaker (Main switch with overload protection)

•Fan and compressor capacitors

•Compressor contactor

•Robust weather proof housing

2 – Handling and storage

•It is recommended not to open the packaging before the unit is at the final place for installation.

•Handle the unit with care. The packaging allows for the use of a forklift or pallet jack. Use appropriate and safe lifting equipment..

•Store and transport the unit in an upright position.

•Store the unit between -35°C and 50°C.

•Don’t expose the packaging to rain or corrosive atmosphere.

•After unpacking, check that the unit is complete and undamaged.

3 – Installation precautions

Never place the unit in a flammable atmosphere.

Place the unit in such a way that it is not blocking or hindering walking areas, doors, windows or similar.

•Ensure adequate space around the unit for air circulation and to open doors. Refer to picture 1 for minimal values of distance to walls.

•Avoid installing the unit in locations which are daily exposed to direct sunshine for longer periods.

•Avoid installing the unit in aggressive and dusty environments.

•Ensure a foundation with horizontal surface (less than 3° slope), strong and stable enough to carry the entire unit weight and to eliminate vibrations and interference.

•The unit ambient temperature may not exceed 50°C during off-cycle.

•Ensure that the power supply corresponds to the unit characteristics (see nameplate).

•When installing units for HFC refrigerants, use equipment specifically reserved for HFC refrigerants which was never used for CFC or HCFC refrigerants.

•Use clean and dehydrated refrigeration-grade copper tubes and silver alloy brazing material.

•Use clean and dehydrated system components.

•The suction piping connected to the compressor must be flexible in 3 dimensions to dampen vibrations. Furthermore piping has to be done in such a way that oil return for the compressor is ensured and the risk of liquid slug over in compressor is eliminated.

4 – Installation

•The installation in which the condensing unit is installed must comply to pressure Equipment Directive (PED) 2014/68/EU. The condensing unit itself is not a ”unit”in the scope this directive.

•It is recommended to install the unit on rubber grommets or vibration dampers (not supplied).

•It is possible to stack units on top of each other.

	Unit	Maximum
		stacking
	Housing 4	2
	(Code no. 114X34-- or 114X44--)

• When stacking, the topmost unit must be

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© Danfoss | Climate Solutions | 2021.10

Instructions

secured to the wall, as shown in picture 2.

•Slowly release the nitrogen holding charge through the schrader port.

•Connect the unit to the system as soon as possible to avoid oil contamination from ambient moisture.

•Avoid material entering into the system while cutting tubes. Never drill holes where burrs cannot be removed.

•Braze with great care using state-of-the-art technique and vent piping with nitrogen gas flow.

•Connect the required safety and control devices. When the schrader port is used for this, remove the internal valve.

•It is recommended to insulate the suction pipe up to the compressor inlet with 19 mm thick insulation.

5 – Leak detection

Never pressurize the circuit with oxygen or dry air. This could cause fire or explosion.

•Do not use dye for leak detection.

•Perform a leak detection test on the complete system.

•The maximum test pressure is 31 bar.

•When a leak is discovered, repair the leak and repeat the leak detection.

6 – Vacuum dehydration

•Never use the compressor to evacuate the system.

•Connect a vacuum pump to both the LP & HP sides.

•Pull down the system under a vacuum of 500 µm Hg (0.67 mbar) absolute.

•Do not use a megohmmeter nor apply power to the compressor while it is under vacuum as this may cause internal damage.

7 – Electrical connections

•Switch off and isolate the main power supply.

•Ensure that power supply can not be switched on during installation.

•All electrical components must be selected as per local standards and unit requirements.

•Refer to wiring diagram for electrical connections details.

•Ensure that the power supply corresponds to the unit characteristics and that the power supply is stable (nominal voltage ±10% and nominal frequency ±2,5 Hz).

•Dimension the power supply cables according to unit data for voltage and current.

•Protect the power supply and ensure correct earthing.

•Make the power supply according to local standards and legal requirements.

•The unit is equipped with an electronic controller. Refer to Manual 118U3808 for details.

•The unit is equipped with a main switch with

overload protection. The overload protection is factory preset but it is recommended to check the value before taking the unit in operation. The value for the overload protection can be found in the wiring diagram in the front door of the unit.

•The unit is equipped with high and low pressure switches, which directly cut the power supply to the compressor in case of activation. Parameters for high and low pressure cut outs are preset in the controller, adapted to the compressor installed in the unit.

•P05 models are also equipped with phase sequence relay to protect the unit against phase loss/sequence/ asymmetry and under-/ over-voltage.

For units with a 3-phase scroll compressor (OPMPXMxxxxxxxxE), correct phase sequence for compressor rotation direction shall be observed.

•Determine the phase sequence by using a phase meter in order to establish the phase orders of line phases L1, L2 and L3.

•Connect line phases L1, L2 and L3 to main switch terminals T1, T2 and T3 respectively.

8 – Safety

Fusible Plug is not installed in unit, it is replaced with adapter blanking plug.

Unit has liquid receiver with an Adapter Plug with 3/8” NPT connection. installer/end user can select various options as mentioned in EN378-2 : 2016 Article § 6.2.2.3

•Optyma Plus fitted with atmospheric pressure relief valve. Don’t connect any tube at end of the pressure relief valve.

•Once the pressure relief valve opens, don’t use dry air or oxygen to evacuate the refrigerants.

•Optyma Plus (P06 version only) factory fitted with pressure relief valve at 33 bar setting.

•Once pressure relief valve opens, Danfoss recommended to replace new pressure relief valve.

•The unit/installation into which the condensing unit is mounted/integrated, must be in accordance with the PED.

•Beware of extremely hot and cold components.

•Beware of moving components. Power supply should be disconnected while servicing.

9 – Filling the system

•Never start the compressor under vacuum. Keep the compressor switched off.

•Use only the refrigerant for which the unit is designed for.

•Fill the refrigerant in liquid phase into the

condenser or liquid receiver. Ensure a slow charging of the system to 4 – 5 bar for R404A/ R448A/R449A/R407A/R407F/R452A and approx. 2 bar for R134a and R513A.

•The remaining charge is done until the installation has reached a level of stable nominal condition during operation.

•Never leave the filling cylinder connected to the circuit.

10 – Setting the electronic controller

•The unit is equipped with an electronic controller which is factory programmed with parameters for use with the actual unit. Refer to Manual 118U3808 for details.

•By default, the electronic controller display shows the temperature value for the suction pressure in °C. To show the temperature value for the condensing pressure, push the lower button (picture 3).

The electronic controller is factory preset for R404A or R449A or R452A or R134a depending on the model of compressor mounted and application (Refer Annexx in Optyma Controller installation manual). If another refrigerant is used, the refrigerant setting must be changed. Parameter r12 must be set to 0 before (software main switch= off).

•Push the upper button for a couple of seconds. The column with parameter codes appears.

•Push the upper or lower button to find parameter code o30.

•Push the middle button until the value for this parameter is shown.

•Push the upper or lower button to select the new value: 2 = R22, 3 = R134a, 36 = R513A, 17 = R507, 19 = R404A, 20 = R407C , 21 = R407A, 37 = R407F, 40 = R448A, 41 = R449A, 42 = R452A.

•Push the middle button to confirm the selected value.

•Push the upper or lower button to find parame­ ter code r84.

•Push the middle button until the value for this parameter is shown as 125

•Push the upper button to select the new value: 130.

11 – Verification before commissioning

Use safety devices such as safety pressure switch and mechanical relief valve in compliance with both generally and locally applicable regulations and safety standards. Ensure that they are operational and properly set.

Check that the settings of high-pressure switches and relief valves don’t exceed the maximum service pressure of any system component.

•Verify that all electrical connections inside the condensing unit are properly fastened as they could have worked loose during transportation.

•When a crankcase heater is required, the unit

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