16
9.0 Installation and Commissioning of 2-C Systems (Pressurized & Non Pressurized)
Note: For schematic layout please refer enclosed annexure 3.
9.1 Installation of Tank and Collector
Installation of mounting structure and collector for 2-C systems is similar to normal system. Refer section 5 for
details.
9.2 Installation of Make-up tank.
Polymer tank of 3L capacity will be provided along with installation kit for all 2-C systems.
Connect the ¾” MS Elbow provided in the kit to pipe indicated as “ Glycol Filling Inlet”
Fix the polymer makeup tank to the elbow securely.
9.3 Procedure for filling Secondary circuit in 2-C systems
Complete all the connections as per the schematic. Cover the collectors with opaque sheet
Fill the water into the primary circuit (Main tank) from the cold water inlet pipe.
Disconnect the hot water rising pipe from the tank and hold it in upward direction.
Remove the Air release plug provided at the top of the tank.
Fix the funnel on the top of the tank and start filling the DM water / Water glycol mixture till the air inside
the system is vented out and water flows over the disconnected hot water rising pipe.
Connect back the hot water rising pipe into the tank. Continue filling till the water reaches the maximum
level
(¾” level) of the makeup tank and close the lid of the tank.
Fig 24
Ensure the water level is between maximum & minimum marking. Do not fill the
tank completely with water / glycol mixture.
Check the level of water/glycol periodically and top up if required
Ensure no leakage though any of the joints
9.4
Approximate DM water / Glycol mixture required
System
capacity
Jacket volume
in litres
Collector
volume in litres
Make up tank &
connections volume in litres
~ Total volume of DM
water required in litres
100-2C
5
3
6
14
125-2C
6
3
6
15
200-2C
8
6
8
22
250-2C
11
6
8
25
300-2C
16
9
10
35
500-2C
26
12
12
50
Use only De- Mineralized (DM) Water OR Distilled water for filling the Secondary circuit. When
system is installed in high altitudes, where minimum ambient temperature is less than 5 deg C, use
mixture of glycol and DM water in 1:1 ratio
Max Level (¾“of the tank)
Min Level (¼“of the tank)
Summary of Contents for FCB 120-1V-NB
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