Samsung AM***MXWA Series - Connection Ports and System Requirements

ENGLISH-87
02 INSTALLING THE PRODUCT
1. Refer to following table, for diameter of the outdoor unit connection part where water pipe will be connected. If you
install outdoor units with dierent capacities, install a ow control valve to secure rated ow for each outdoor unit. Socket
must be connected within below tightening torque. If the tightening torque exceeds below value, it may cause product
breakage.
AM080/100/120/200MXWA AM300KXWA
PT 1-1/4 (Internal thread) PT 2 (Internal thread)
Outer diameter of water pipe (mm) Tightening torque (N·m)
10 ~ 20 25
21 ~ 30 50
31 ~ 50 100
51 ~ 80 220
81 ~ 115 600
2. Use certied parts for water pipe system and the water pressure of the water pipe system connected to outdoor unit
must remain under 1.96 MPa.
3. Outdoor unit water pipes must be equipped with valves and other instrumentations as shown in the gure on the
previous page. Strainer and ow switch must be installed within 1~2 m 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 ow 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.
7. If you stop the product for long time or in night time, water pipe circuit may freeze naturally when the temperature
around the outdoor unit is under 0°C. When water pipe circuit freezes, it will cause damage to the plate type heat
exchanger and therefore preventive measure must be taken according to the situation.
- Drain remaining water in the water pipe
- Operate continuous water circulation pump during outdoor unit operation, 1~5 minutes before the operation and 1~5
minutes after operation stops
- Install self-regulating heat cable on the water pipes
8. When inlet water temperature is lower than 10°C, appropriate anti-freeze must be used according to the temperature. Set
the outdoor unit option switch (A Type PBA : K21/K22, B Type PBA : Key option) according to the usage temeprature.
- When lowest inlet water temperature is -5°C, freezing point of anti-freeze must be lower than -8°C
- When lowest inlet water temperature is -10°C, freezing point of anti-freeze must be lower than -15°C
9. Install number of auto air vent valve at a point where air may remain within the pipe (such as vertical water pipe). If the
air within the pipe is not vented, it may cause performance decrease or corrosion on the product or pipes.
10. Keep the inlet water temperature within 'Main usage range'. If not, product may not work continuously.
11. Water scale may occur on the plate type heat exchanger depending on the water quality and the type of plate heat
exchanger so regular chemical cleaning is necessary. When installing water pipes, install a heat source water shut-o
valve and also install the ushing pipe with a ball valves (for chemical cleaning) on the pipe installed between the shut-
o valve and the outdoor unit.