AM, EM, AQ, BA, ASW - IOM
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Ing.Ji
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í Jiránek
2 Piping Connection of Indoor and Outdoor Units – AM, EM
After mechanical installation of split heat pumps AM and EM, installation of piping connection
between the indoor and outdoor unit must be performed..
2.1 Danger
The inner units of heat pumps are filled with coolant r407c or r410a by the manufacturer. The
outer units are pressured by nitrogen to 1,0MPa. Please follow the following safety guidelines:
•
Always use safety googles and protection gloves during manipulation
•
In the case of servicing and repairs make sure the equipment has been disconnected
from the power source
•
Pay attention to the working areas of fans when the equipment is connected to the power
source
•
Refrigerant causes frostbites
•
The coolant becomes toxic after burning, be careful during manipulation with the flame of
the welding unit
2.2 Piping
For installation deoxidized, plugged Cu piping with certification for cooling equipment must be
used. The piping must be certified in accordance with EN12735-1. We recommend using pre-
insulated piping. The connection comprises always of the steam piping and liquid piping.
Never use piping dedicated for water.
Piping dimensions of different types of heat pumps see table below:
typ T
Č
D vapour line
[mm]
d liquid line
[mm]
max. length
[m]
max. height
[m]
AM3015
18x1 (3/4“)
12x1 (1/2“)
15
10
AM3021
18x1 (3/4“)
12x1 (1/2“)
15
10
AM3030
22x1(7/8“)
12x1 (1/2“)
15
10
AM3038
22x1(7/8“)
12x1 (1/2“)
15
10
AM3045
22x1(7/8“)
12x1 (1/2“)
15
10
AM3060.2
2x 22x1(7/8“)
2x 12x1 (1/2“)
15
10
AM3076.2
2x 22x1(7/8“)
2x 12x1 (1/2“)
15
10
AM3090.2
2x 22x1(7/8“)
2x 12x1 (1/2“)
15
10
EM26Z
22x1(7/8“)
12x1 (1/2“)
15
10
EM30Z
22x1(7/8“)
12x1 (1/2“)
15
10
EM37Z
22x1(7/8“)
12x1 (1/2“)
15
10
EM45Z
22x1(7/8“)
12x1 (1/2“)
15
10
EM60Z
28x1
15x1 (16x1)
20
10
EM75Z
28x1
15x1(16x1)
15
15
Also follow the following instructions:
•
Always use only the Cu roller-type pipe cutter for cutting the piping, never use a saw
•
Cut the piping immediately prior to connecting operation
•
Remove the plugs no sooner than immediately prior to connecting operation
•
Never leave the piping and components open to the atmosphere, not even for a short
time
•
During bending pay attention that the piping is not deformed (narrowed), always use
special equipment and tools
•
Never bend the piping by hand, over the knee etc.
