Hitachi YUTAKI S Series Installation And Operation Manual

18
PMEN0643 rev.0 - 04/2023
5
R32 REFRIGERANT CIRCUIT
REFRIGERANT AND WATER PIPING
5.2.2 Refrigerant piping
◆ Refrigerant piping length between indoor unit and outdoor unit
The unit installaon and refrigerant piping should comply with the relevant local and naonal
regulaons for the designed refrigerant.
Due to R32 refrigerant and depending on nal refrigerant charge amount, a minimum oor area
for installaon must be considered.
• If total refrigerant charge amount <1.84kg, there are no addional minimum oor area
requirements.
• If total refrigerant charge amount ≥1.84kg, there are addional minimum oor area
requirements to be checked.
New YUTAKI R32 range (1.5-3HP) due to low refrigerant charge amount and due to low addional
charge needed, unit installaon can achieve up to 30m without any minimum oor area requirement.
1.5HP 2HP 2.5HP 3HP
Factory Charge kg 1.1 1.1 1.3 1.3
Charge-less piping length m 10 10 10 10
Addional Charge needed g/m 15 15 15 15
Maximum piping m 30 30 30 30
Maximum total refrigerant charge kg 1.4 1.4 1.6 1.6
Minimum room area requirement (Amin) m
2
No requirement is needed
Minimum piping length between outdoor unit and indoor unit (Lmin) m 3
Maximum height dierence between indoor and outdoor unit (H)
Outdoor unit higher than indoor unit m 30
Indoor unit higher than outdoor unit m 20

Hitachi YUTAKI S Series Specifications

General

Brand	Hitachi
Model	YUTAKI S Series
Category	Heat Pump
Language	English