Water Piping And Fitting; Buffer Tank (Optional) - McQuay C Serie Manual De Instalación

• All water pipe must be insulated to prevent capacity losses and condensation.
• Install a 40-60 mesh strainer to ensure water quality is good.
• Water pipe recommended are GI pipe, black steel pipe and copper pipe.
• During installation, the piping of the unit should be clamp before rotating the installation pipe to reduce the moment induce
on the unit piping.
• Users are recommended to install the pipe and accessories as shown in Figure 2.
• An air vent must be installed at the highest position, while a drainage plug at the lowest position of the water circuit. Open
the air vent to release any air trap in the water circuit.
• Run the clean water through the water inlet and operate the pump to drain out the dirty water. Clean the strainer after
running the pump for 30 minutes.
• Fill up the water circuit after connecing all the pipes and equipment. Check water leakages at all connections and joints. Do
not start the unit when the system is leaking. To optimize the capacity of the system, ensure that the system is free of air
bubbles. The air trapped in the system would make the system unbalanced.
• Do not allow water remain in the water pipes if the unit is not operating for a long period.
Water must be drained out if the unit is not running during winter. Failing to do so would cause the pipe to crack.
• Do not drink the chilled water in the unit.
• The unit does not come with a water buffer tank. However if required, a 135 litre water buffer tank is available.
• Refer Figure 2 for position and connection of the water tank.
• The adaptor installed on the water tank is 1 1/4 inches BSPT female type.
• A drainage point is available at the bottom of the tank. However the drainage pipe must be field installed.
WATER IN FROM FCU
WATER OUT TO FCU
WATER OUT TO CHILLER

WATER PIPING AND FITTING

PRESSURE GAUGE
GATE GATE
VALVE VALVE
GATE BALANCING
THERMOMETER
VALVE VALVE
WATER
GATE
THERMOMETER
VALVE
(OPTIONAL)
FLEXIBLE
! ! ! ! ! CAUTION

BUFFER TANK (OPTIONAL)

654.0
33.5 33.5
➞
➞
➞
116.1
1-4
AIRVENT (INSTALL
HIGHEST POSITION)
AUTO PRESSURE RELIEF
BALANCING
P
GATE
VALVE
VALVE
STRAINER
TANK
CHECK
VALVE
GATE VALVE (LOWER
POSITION FOR DRAINAGE)
MAKE UP
WATER DRAINAGE
VALVE
VALVE
51.5
61.5 561.8
FAN COIL UNIT/AIR HANDLING UNIT
Figure 2