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❋ Design condition
Circulating
Type
water
Heat source
Water loop
water
Ground heat
Ground loop
Note1)
source
Note 1): Anti-freeze must be used when temperature of water inlet for heating is below 10 °C (50 °F) or ground heat
source is used. Maintain appropriate concentration level of anti-freeze according to temperature of water inlet.
Note 2): Strict management of anti-freeze concentration level is required. Consult Samsung before application.
Note 3): When inlet water temperature is outside of limit, consult Samsung before application.
1. Diameter of the outdoor unit connection part where water pipe will be connected is 1 1/4 FPT. If you install outdoor units
with different capacities, install a flow control valve to secure rated flow for each outdoor unit. Socket must be connected
within below tightening torque. If the tightening torque exceeds below value, it may cause product breakage.
Outer diameter of water pipe
mm
10 ~ 20
21 ~ 30
31 ~ 50
51 ~ 80
81 ~ 115
2. Use certified parts for water pipe system and the water pressure of the water pipe system connected to outdoor unit
must remain under 1.96 MPa (285 psi).
3. Outdoor unit water pipes must be equipped with valves and other instrumentations as shown in the figure on the
previous page. Strainer and flow switch must be installed within 1 ~ 2 m (3.3 ~ 6.6 ft) from the entrance pipe of the
outdoor unit. (Strainer must be installed on entrance side)
- When strainer is not installed, sand, dust or rust debris may cause product breakage.
- Make sure to install a flow switch that works at minimum discharge. When optimal discharge level is not reached, heat
exchanger within the outdoor unit may break.
4. Water inlet pipe is located at the bottom part of the heat exchanger and the water outlet pipe is at the top part of the
heat exchanger.
5. Outdoor unit must be installed indoor at room temperature and the water inlet and outlet of the outdoor unit must be
insulated with the heat exchanger as shown in the illustration.
6. Damp-proof, cold reserving and insulation work must be done thoroughly to prevent condensation from forming on the
surface of the product and drain pipes of indoor/outdoor units. When the necessary work is not done thoroughly, you will
waste energy caused by thermal loss and may get property damage during cold seasons when water pipe freezes and
bursts.
Inlet water temperature
Operation
Main usage range
Cooling
20 ~ 35 °C (68 ~ 95 °F)
Heating
Cooling
15 ~ 35 °C 59 ~ 95 °F)
Heating
5 ~ 25 °C (41 ~ 77 °F)
inch
0.39 ~ 0.79
0.83 ~ 1.18
1.22 ~ 1.97
2.0 ~ 3.15
3.19 ~ 4.53
ENGLISH-99
Note 3)
Usage range limit
10 ~ 45 °C (50 ~ 113 °F)
10 ~ 45 °C (50 ~ 113 °F)
management ' on
-5 ~ 45 °C (23 ~ 113 °F)
Note 2)
-10 ~ 45 °C (14 ~ 113 °F)
Tightening torque
N·m
25
50
100
220
600
Remarks
Refer to
'Cooling water
page 118
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