Hokkaido HCND 261 G, Инструкция по эксплуатации

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IN-4
Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation
R410A Refrigerant Specifications
Refrigerant R22 (pure) R410A (mixture) R407C (mixture)
Refrigerant oil Mineral oil (SONTEX 200L) Synthetic oil (POE) Synthetic oil (POE)
Pressures Factor: “1” Factor: 1.6 as regards R22 Factor: 1.1 as regards R22
1. Calculate additional amount of R410A eventually required
1. Do not purge pipings by using refrigerant.
2. Use a vacuum pump provided with a one-way valve.
1. Pressurize with nitrogen up to 4.15 MPa.
2. After 24 hours, check if pressure value has been
kept.
1. Do not connect power supply.
1. Respect specifications (min. thickness) of pipings.
2. Use new and perfectly clean pipings.
3. Carry out eventual weldings in nitrogen atmosphere.
Delivery of system
Test of system
Installation of service panels
Check of leakages
Eventual additional charge
Purging method
Pressure test
Refrigerant pipings
Installation of Outdoor Unit
Base of Outdoor Unit
Wiring
Installation of remote controls
Insulation
Canalization works
Drain hose
Refrigerant pipings
Installation of Indoor Units
Assignment of works
1. Check the required refrigerant.
2. Use indicated refrigerant only.
Check of refrigerant
Planning of works
Working pressures of R410A refrigerant are about 1.6 times higher than those of R22 refrigerant. For systems
with R410A, it is required the use of compressors having polyester synthetic lubrication oil (POE). Mineral
lubrication oil is not compatible with refrigerant circuits with R410A.
Sequence (purely as an indication) of installation work
by installation and carry out additional charge.