Danfoss DCJ121T4LC6 Installation guide

Instructions

70 65 60

SH 11K

55 50 45 40 35 30 25 20

-30 -20 -15-25 -10 -5 50 10 15

Condensing Temperature (°C)

Evaporating Temperature (°C)

70 65 60

SH 5K

SH 11K

HCJ120 & HCJ121

55 50 45 40 35 30 25 20

-30 -20 -15-25 -10 -5 50 10 15

Condensing Temperature (°C)

Evaporating Temperature (°C)

70 65 60

SH 11K

55 50 45 40 35 30 25 20

-30 -20 -15-25 -10 -5 50 10 15

Condensing Temperature (°C)

Evaporating Temperature (°C)

SH 5K

SH 10K

70 65 60 55 50 45 40 35 30 25 20

Condensing Temperature (°C)

-30 -20 -15-25 -10 -5 50 10 15

Evaporating Temperature (°C)

-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25

Condensing temperature (℃)

Evaporating temperature (℃)

SH5K

F G

Danfoss scroll compressors DCJ / H series

1 – Introduction

These instructions pertain to the Danfoss scroll compressors used for HVAC systems. They provide necessary information regarding safety and proper usage of this product.

2 – Nameplate

3 - Operating map

DCJ (R410A)

4 - Electrical connections

HRH/HLH/HLJ/HCJ Model variation T (R410A)

A: Model number B: Serial Number C: Manufacturing year D: Internal protection E: Supply voltage range F: Locked rotor current

Maximum operating current

G: Lubricant type and nominal charge H: Approved Refrigerant

Single pack

PSC wiring

Line

Run Capacitor

HRM/HLM/HCM - HRH/HL H/HLJ/HCJ

Model variation U (R22 / R410A)

HRM/HLM/HCM-HRP/HLP/HCP Model variation T

(R22/407C)

HHP (R407C)

When HRM compressors are used with R417A, the factory charged oil must be replaced by PVE oil 320HV (120Z5034).

Quick connect spade terminals

P & T terminal box type

C T₁

T₃

T₂

Line

Run Capacitor

CSR wiring

Potential Relay

Start Capacitor

5 - Connections size

Ring connect screw terminals

C & Q terminal box type

push

Brazed connection Rotolock connection Models

HRM032-042

HRP034-042

HRM/HRP045-047

HRH029-040 HRM/HRP048-060 HLM/HLP068-075

HRH041-056

HLH061-068

HLJ061-068

HLM/HLP078-081

HCM/HCP094-120

HCJ090-121 DCJ091-121

Connec.

size

Suction

3/4"

Disch. 1/2"

Suction

7/8"

Disch. 1/2"

Suction

7/8"

Disch. 3/4"

Suct. 1"1/8

Disch. 7/8"

Models

- -

HRH044-

056

HLH061-

068

HLJ072-083

- -

Connec.

size

Suct. 1"1/4

Disch. 1"

Installation and servicing of the compressor by qualied personnel only. Follow these instructions and sound refrigeration engineering practice relating to installation, commissioning, maintenance and service.

The compressor must only be used for its designed purpose(s) and within its scope of application (refer to «operating limits»). Consult Application guidelines and datasheet available from cc.danfoss.com

The compressor is delivered under nitrogen gas pressure (between 0.3 and 0.4 bar / 4 and 6 psi). Do not disassemble bolts, plugs, ttings, etc... unless all pressure has been relieved from the compressor.

Never operate compressor without terminal box cover in place and secured.

Under all circumstances, the EN378 (or other applicable local safety regulation) requirements must be fullled. Wear protective goggles and work gloves.

The compressor must be handled with caution in the vertical position (maximum oset from the vertical : 15°).

6 – Handling and storage

Handle the compressor with care. Use the dedicated

• handles in the packaging. Use the compressor lifting lug and use appropriate and safe lifting equipment.

• Store and transport the compressor in an upright position.

• Store the compressor between -35°C and 70°C (31°F and 158°F).

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

7 – Safety measures before assembly

Never use the compressor in a ammable

atmosphere.

• Mount the compressor on a horizontal at surface with less than 7° slope. Verify that the power supply corresponds to the

• compressor motor characteristics (see nameplate).

• When installing a compressor model, use equipment specically 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 piping connected to the compressor must be

• exible in 3 dimensions to dampen vibrations.

•

The compressor must always be mounted with the rubber grommets supplied with the compressor.

8 – Assembly

• Slowly release the nitrogen holding charge through discharge and suction ports.

• Connect the compressor 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 ow.

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

• For parallel assemblies of the compressors in version C8, contact Danfoss.

9 – Leak detection

Never pressurize the circuit with oxygen or dry

air. This could cause re or explosion.

• Do not use leak detection dye. Perform a leak detection test on the complete

• system.

• The low side test pressure must not exceed 31 bar /450 psi.

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

10 – 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) / 0.02 inch Hg absolute.

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

11 – Electrical connections

• Switch o and isolate the main power supply. All electrical components must be selected as per

• local standards and compressor requirements.

• Refer to page 1 for electrical connections details.For three phase applications, the terminals are labeled T1, T2, and T3. For singlephase applications the terminals are labeled C (common), S (start), and R (run).

• Danfoss scroll compressors will only compress gas while rotating counter-clockwise (when viewed from the compressor top). Since single-phase motors will start and run in only one direction, reverse rotation is not a major consideration. Three-phase motors, however,

Danfoss A/S, 6430 Nordborg, Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

AN146886422104en-000501

will start and run in either direction, depending on the phase angles of the supplied power. Care must be taken during installation to ensure that the compressor operates in the correct direction. Use ø 4.8 mm / #10 - 32 screws and ¼” ring

• terminals for the power connection with ring connect screw terminal (C type). Fasten with 3 Nm torque.

• Use ø 6.3 mm tabs for quick connect spade terminals (P type).

• Use a self tapping screw to connect the compressor to earth.

12 – Filling the system

• Keep the compressor switched o.

• Keep the refrigerant charge below the indicated charge limits if possible. Above this limit; protect the compressor against liquid ood-back with a pump-down cycle or suction line accumulator. Never leave the lling cylinder connected to the

• circuit.

Compressor models

HRM032-034-038-040-042-045-047

HRP034-038-040-042-045-047 /

HHP015-019-021-026 /

HRH031-032-034-036-038-040

HRM048-051-054-058-060 / HLM068-072-075-078-081 /

HRP048-051-054-058-060 /

HLP068-072-075-081 /

HHP030-038-045 /

HRH044-049-051-054-056 /

HLH061-068 - HLJ072-083

HCM094-109-120 /

HCP094-109-120 /

HCJ090-091-105-106-120-121 /

DCJ091-106-121

Refrigerant

charge limit

3.6 kg / 8 lb

5.4 kg / 12 lb

7.2 kg / 16 lb

13 – 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 don’t exceed the maximum service pressure of any system component.

• A low-pressure switch is recommended to avoid

low pressure operation.

Minimum setting for R22 Minimum setting for R407C Minimum setting for R410A 2.5bar (absolute)/36 psia

•

Verify that all electrical connections are properly fastened and in compliance with local regulations.

• When a crankcase heater is required, it must be

1.5bar (absolute)/22 psia

energized at least 24 hours before initial start-up and start-up after prolonged shutdown.

• Please respect a 90 Nm ± 20 Nm for tightening

torque of all rotolock nut.

14 – Start-up

• Never start the compressor when no refrigerant

is charged.

• Do not provide any power to the compresor

unless suction and discharge service valves are open, if installed. Energize the compressor. It must start promptly.

•

If the compressor does not start, check wiring conformity and voltage on terminals.

•

Eventual reverse rotation can be detected by following phenomena; the excessive noise, no pressure dierential between suction and discharge, and line warming rather than immediate cooling. A service technician should be present at initial start-up to verify that supply power is properly phased and that the compressor is rotating in the correct direction. H-series Scroll compressors are designed to operate for a maximum of 150 hours in reverse, but as a reverse rotation situation can go unnoticed for longer periods, phase monitors are recommended. For compressors HLM078, HLP081, HLJ083 and larger, phase monitors are required

for all applications. Danfoss recommends phase protection for residential compressors.

• If the internal overload protector trips out, it must cool down to 60°C / 140°F to reset. Depending on ambient temperature, this may take up to several hours.

15 – Check with running compressor

Check current draw and voltage. Measurement of amps and volts during running conditions must be taken at other points in the power supply, not in the compressor electrical box.

•

Check suction superheat to reduce risk of slugging.

• Observe the oil level in the sight glass (if

provided) for about 60 minutes to ensure proper oil return to the compressor.

• Respect the operating limits.

Check all tubes for abnormal vibration.

•

Movements in excess of 1.5 mm / 0.06 in require corrective measures such as tube brackets.

•

When needed, additional refrigerant in liquid phase may be added in the low-pressure side as far as possible from the compressor. The compressor must be operating during this process.

• Do not overcharge the system.

• Never release refrigerant to atmosphere.

• Before leaving the installation site, carry out

a general installation inspection regarding cleanliness, noise and leak detection.

• Record type and amount of refrigerant charge

as well as operating conditions as a reference for future inspections.

16 – Maintenance

Internal pressure and surface temperature are dangerous and may cause permanent injury. Maintenance operators and installers require appropriate skills and tools. Tubing temperature may exceed 100°C / 212°F and can cause severe burns.

Ensure that periodic service inspections to ensure system reliability and as required by local regulations are performed. To prevent system related compressor problems, following periodic maintenance is recommended:

• Verify that safety devices are operational and

properly set.

• Ensure that the system is leak tight.

• Check the compressor current draw.

• Conrm that the system is operating in a way

consistent with previous maintenance records and ambient conditions.

• Check that all electrical connections are still

adequately fastened.

• Keep the compressor clean and verify the

absence of rust and oxidation on the compressor shell, tubes and electrical connections.

• Acid / moisture content in system and oil should

be checked regularly.

17 - Warranty Always transmit the model number and serial number with any claim led regarding this product. The product warranty may be void in following cases:

• Absence of nameplate.

• External modications; in particular, drilling,

welding, broken feet and shock marks.

• Compressor opened or returned unsealed.

• Rust, water or leak detection dye inside the

compressor.

• Use of a refrigerant or lubricant not approved by

Danfoss.

• Any deviation from recommended instructions

pertaining to installation, application or maintenance.

• Use in mobile applications.

• Use in explosive atmospheric environment.

• No model number or serial number transmitted

with the warranty claim.

14 – Disposal

Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site.