HIWARM
A
B
F
E
C
D
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All copying, even partial, of this manual is strictly forbidden
RG66007967 - Rev 02
Domestic hot
water
Water mains
Storage tank
Storage tank
Fan coil
Flooring
REMOTE UNIT
DOMESTIC HOT WATER
HOME ENVIRONMENT
Cooling, dehumidification and simultaneous production of domestic hot water,
alternated with excess heat dissipation to the coil.
3.6
PIPING AND LOAD DESIGN CRITERIA
All the copper pipes are made according to our specifications for the construction process to be fully controlled and implicitly
improve the quality of our products. Each pipeline complies with the requirements of Directive 97/23PED and is verified by
FEM code at the most stressed 180° bending point and at the maximum pressure allowed by the safety components while
also considering adequate safety coefficients.
The tables below provide guidelines regarding the pipes to use to connect the indoor and the outdoor units according to the
different sizes of the HiWarm and the length of the line:
Model
012
022
033
Refrigerant
R410A
Pipe length
m
0-5
6-10
11-15
16-20
21-25
0-5
6-10
11-15
16-20
21-25
0-5
6-10
11-15
16-20
21-25
Compressor frequency
Hz
30-120
30-120
30-120
30-120
30-120
20-120
20-120
20-120
20-120
20-120
20-120
20-120
20-120
20-120
20-120
Intake line (GAS)
mm-in
16-5/8"
16-5/8"
16-5/8"
18-3/4"
18-3/4"
18-3/4"
18-3/4"
18-3/4"
22-7/8"
22-7/8"
22-7/8"
22-7/8"
22-7/8"
28-1 1/8"
28-1 1/8"
Liquid line
mm-in
10-3/8"
10-3/8"
10-3/8"
10-3/8"
10-3/8"
12-1/2"
12-1/2"
12-1/2"
12-1/2"
12-1/2"
16-5/8"
16-5/8"
16-5/8"
16-5/8"
16-5/8"
WARNING
Use pipes marked in compliance with standard UNI 12735.
ATTENTION
The connection gas/liquid lines between the indoor and outdoor units must be vacuumed
before opening the valves of the indoor unit. The absence of air and moisture in the pipes
is important in order to guarantee proper operation and durability of the unit. Qualified
personnel must install the pipes and perform the installation.
