Danfoss 120Z0055 Commercial Compressor Crankcase Heater Instructions
- June 1, 2024
- Danfoss
Table of Contents
Danfoss 120Z0055 Commercial Compressor Crankcase Heater
Product Information
- Specifications
- Power (W): 40, 50, 60, 55/70, 65, 70, 54, 75, 130
- Voltage (V): 230, 400/460, 240, 110, 575, 24
- L1 (mm): Range from 400 to 980
- L2 (mm): Range from 565 to 1220
- Resistance (): Range from 93 to 5137
- Diameter Min. (mm): Range from 140 to 380
- Diameter Max. (mm): Range from 175 to 380
- Application: Various compressor models for A/C and refrigeration with Danfoss Commercial Compressors
Product Usage Instructions
- Installation
- Ensure the power supply matches the voltage requirement of the crankcase heater.
- Select the optimum location area as shown in Figs. 1-5 ensuring the minimum oil level required for the compressor model is respected.
- Follow the application guidelines to determine compatibility with your specific compressor model.
- Usage
- Connect the crankcase heater to the appropriate power source following electrical safety protocols.
- Monitor the heater periodically to ensure proper functioning.
- Refer to the user manual for any troubleshooting or maintenance requirements.
- Maintenance
- Regularly inspect the crankcase heater for any signs of damage or wear.
- Clean the heater as needed to maintain optimal performance.
- Seek professional assistance for any repairs or replacements if necessary.
FAQs
- Q: Can the crankcase heater be used with all Danfoss compressor models?
- A: No, the crankcase heater is designed for specific compressor models listed in the user manual under the “Application” section.
- Q: What should I do if the crankcase heater malfunctions?
- A: If the crankcase heater malfunctions, disconnect it from the power source immediately and consult a qualified technician for repair or replacement.
- Q: Is it necessary to monitor the oil level of the compressor when using the crankcase heater?
- A: Yes, it is essential to ensure that the minimum oil level required for your compressor model is maintained while using the crankcase heater to avoid damage.
Instructions
Danfoss commercial compressor Crankcase Heater
Belt crankcase heater| Power| Voltage| L1| L2|
Resistance| Diameter| Application|
---|---|---|---|---|---|---|---|---
Min. (mm)| Max. (mm)|
(W)| (V)| (mm)| (mm)| (0)|
120Z0055| 40| 230| 400| 565| 1322| 140| 175| HRM025-047; HRP025-047;
HRH029-050|
120Z0890| 40| 400/460| 460| 565| 4000| 160| 175| HRM025-047; HRP025-047;
HRH029-050; ; VZH028-035-044|
120Z0057| 50| 230| 520| 705| 1058| 180| 215| HRM048-060; HLM068-08;
HRP048-060; HLP068-081; HRH041-056; HRH041-056 HLH061-068; HLJ072-083|
120Z0058| 50| 400| 520| 705| 3200|
120Z0895| 60| 240| 460| 565| 960| 160| 175| MLZ/MLM 015-026|
120Z0893| 55/70| 400/460| 500| 565| 3255| 180| 215| LLZ all models|
120Z0892| 65| 230| 520| 705| 814| HCM094-120; HCP094-120; HCJ091-121;
DCJ091-121 MLZ/
MLM 030-076; LLZ all models
|
120Z0060| 65| 400| 520| 705| 2461|
120Z0894| 70| 460| 500| 705| 3255| HCM094-120; HCP094-120; HCJ091-121;
DCJ091-121 MLZ/ MLM 030-076; LLZ all models; DCJ091-121|
7773106| 54| 230| 550| 880| 220| 185| 280| MT(Z)18 to 40 NTZ048-068
VTZ038 to 054
|
120Z0891| 65| 400| 650| 1050| 2462| 185| 325|
7773109| 65| 110| 650| 1050| 186| 220| 325| SM/SZ084-161 VSH088.117 &
VZH088.117 MT(Z) 44 to 81 NTZ096 to 136 VTZ086 to 121|
7773107| 65| 230| 650| 1050| 814| 220| 325|
7973002| 65| 230| 650| 1050| 814| 220| 325|
120Z0891| 65| 400| 650| 1050| 2462| 185| 325|
120Z0466| 65| 460| 650| 1050| 3287| 220| 325|
120Z0467| 65| 575| 650| 1050| 5137|
120Z0039| 65| 400| 650| 1050| 2462| SM/SZ084-161 VSH088.117 & VZH088.117|
120Z0038| 65| 230| 650| 1050| 814| VSH088.117 & VZH088.117|
7773110| 75| 110| 750| 1220| 161| 245| 380| SM/SZ175-185 & SH180 to 485 &
DSH240 to 600 VZH 170 & DSF270 to 530MT(Z) 100 to 160 NTZ215-271 VTZ171 to
242|
120Z0870| 75| 24| 750| 1220| 7.7|
7773108| 75| 230| 750| 1220| 705|
7973005| 75| 230| 750| 1220| 705|
7773118| 75| 400| 750| 1220| 2133|
120Z0464| 75| 460| 750| 1220| 2693|
120Z0465| 75| 575| 750| 1220| 4452|
7773121| 130| 110| 980| 1220| 93| 325| 380| SY/SZ240-380|
7773122| 130| 230| 980| 1220| 407|
7973007| 130| 230| 980| 1220| 407|
7773123| 130| 400| 980| 1220| 1231|
Technical specifications
- Insulation resistance: minimum 100 megohms – 2500 Volts.
- Tolerance: output: ±10%
- Cold tail: 3xAWG20 or AXG18 or AVLV2/8, PVC or Silicone insulated
- Cold tail length: 0.41~1.27 meter
- IP55- Marking UL (cUL on 75W and ref. 120Z0890 up to 120Z0895), CE, and UKCA (except 24V)
- Admissible operating temperature – 40°C/105°C
Introduction
- These instructions pertain to crankcase heaters used for A/C and refrigeration with Danfoss Commercial Compressors; they provide necessary information regarding safety features and proper handling of this product.
- Modifications or alterations of this product are not allowed
- The goal of these heaters is to prevent refrigerant migration during off-cycle periods.
- The lead wires of the heating belts with 3 lead wires shall not be cut (as they are made of glass fiber)
Safety measures before assembly:
- These heaters have been designed and qualified to be used with Danfoss Commercial Compressors, the use with any other application is not allowed.
- Installation and servicing are to be performed by qualified personnel in compliance with all pertinent practices and safety procedures.
- Check that the heater model corresponds to the compressor model (refer to table above).
- Verify that the power supply corresponds to the heater characteristics written on the heater cable.
Assembly
- Install the heater at the lower part of the compressor where the oil is accumulated (below the sight glass) as shown in the pictures Fig. 1& 2 above and Fig. 3&4, and fix over the Ebox.
- Fit the crankcase heater around the compressor and make sure it is in good contact along the entire length.
- Lock the clip and tighten the screw (see Fig. 5) Max torque 2 Nm.
- Before performing an electrical connection, make sure the main power supply has been switched off and isolated
- A separate permanent electrical supply is recommended.
- Belt crankcase heaters are not self-regulating; control must be applied to energize the belt heater once the compressor has been switched off.
- Refer to the application guidelines of each product range for 1st start-up recommendations.
Startup:
- Check the resistance according to the heater model, see table on page 1.
- Perform an insulation test before starting
- Check the voltage.
- Ensure the minimum oil superheat required by the compressor model is respected.
Note:
- An appropriate oil temperature should be maintained under all ambient conditions (temperature and wind).
- However, below -5°C ambient temperature and a wind speed of above 5 m/s, we recommend that the heaters be thermally insulated to limit the surrounding energy losses.
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