Danfoss 7773106 Commercial Compressor Crankcase Heater Instruction Manual

: August 28, 2024
: Danfoss

Table of Contents

7773106 Commercial Compressor Crankcase Heater
Technical speciﬁcations
Introduction
Safety measures prior to assembly:
Assembly:
Start up:
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Instructions
Danfoss commercial compressor
Crankcase Heater

7773106 Commercial Compressor Crankcase Heater

Code number| Voltage (V)| Output (W)| L1 (mm)| L2 (mm)| Resistance (Ω)| Diameter| Application
---|---|---|---|---|---|---|---
Min. (mm)| Max. (mm)| Performer ® HVAC scroll compressors| Performer® refrigeration scroll compressors| Maneurop ® reciprocating compressors
7773106| 230| 55| 550| 880| 220| 185| 280| –| –| MT(Z)18 to 40 LT(Z)22-28 NTZ048-068 MPZ038-068 VTZ038 to 054
7773109
7973001| 110| 65| 650| 1040| 186| 220| 325| SM/SZ084 to 161
SH090 to 184
VSH088 – 117| MFZ166 to LFZ166| MT(Z) 44 to 81
LT(Z) 40 to 50
NTZ096 to 136 VTZ086 to 121
120Z0038
7773107
7973002| 230| 65| 650| 1040| 814| 220| 325
7773117
120Z0039| 400| 65| 650| 1040| 2462| 220| 325
120Z0466| 460| 65| 650| 1040| 3287| 220| 325
120Z0467| 575| 65| 650| 1040| 5137| 220| 325
7773110| 110| 75| 750| 1190| 161| 245| 380| SM/SZ 175 to 185
SH180 to 300 VSH170| MFZ250 to LFZ250| MT(Z) 100 to 160
LT(Z) 88-100 NTZ215-271
VTZ171 to 242
7773108
7973005| 230| 75| 750| 1190| 705| 245| 380
7773118| 400| 75| 750| 1190| 2133| 245| 380
120Z0464| 460| 75| 750| 1190| 2693| 245| 380
120Z0465| 575| 75| 750| 1190| 4452| 245| 380
7773121| 110| 130| 980| 1190| 93| 325| 380| SY/SZ 240 to 380 SH 380| –| –
7773122
7973007| 230| 130| 980| 1190| 407| 325| 380
7773123| 400| 130| 980| 1190| 1231| 325| 380
120Z0055| 230| 40| 400| 565| 1322| 140| 175| HRM032 to 047
HRP034 to 047
HRH029 to 040
HHP015 to 026| MLZ/MLM015 to 026| –
120Z0056| 400| 40| 460| 565| 4000| 160| 175
120Z0057| 230| 50| 520| 705| 1058| 180| 215| HRM/HRP048 to 060
HLM/HLP068 to 075
HRH041 to 056
HLH061 – 068
HLJ072 – 075
HHP030 to 045| –| –
120Z0058| 400| 50| 520| 705| 3200| 180| 215
120Z0059| 230| 65| 520| 705| 814| 180| 215| HLM078 – 081 HLP081 & HLJ083 HCM/HCP094 to 120
HCJ090 to 120| MLZ/MLM030 to 076| –
120Z0060| 400| 65| 520| 705| 2461| 180| 215
120Z0748| 230| 65| 650| 870| 814| 220| 270| SH090 to SH161| –| –

Technical speciﬁcations

Insulation resistance: minimum 100 megohms- 2500 Volts.
Tolerance: output: ±10%
Cold tail: 3×0.75mm², PVC insulated
Cold tail length: 1 meter
IP55 – UL and CE marks
Admissible operating temperature -40 – 100°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 alteration of this product are not allowed
The goal of these heaters is to prevent refrigerant migration during oﬀ cycle periods.

Safety measures prior to 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 is to be performed by qualiﬁed personnel in compliance with all pertinent practises 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 on the pictures Fig. 1& 2 above.
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. 3) 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 energise the belt heater once the compressor has been switched oﬀ.
Refer to application guideline of each product range for 1st start-up recommendations.

Start up:

Check the resistance according to the heater model, see table on page 1.
Perform an insulation test before start up
Check the voltage.
Ensure the oil temperature in the oil sump of the compressor is maintained 10 K above the saturated LP temperature of the refrigerant.

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 in order to limit the surrounding energy losses

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 specifications 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.

AN00008643901602-000301 © Danfoss | DCS (CC) | 2019.07