Warmup WHS-M-S3-Series Installation Manual page 19

Step 3 -
Circuit Purging & Filling
7
40
30 50
90 110
20 60
130
70
150
50 • Turn on the water supply and
10 70
170
32
°F
0 80
°C
open both fill/drain valves.
9
• Purge until discharge water
is clear and free of air. Close
the circuits flow valve first
followed by its return valve.
11
40
30 50
90 110
20
60
130
70
150
50
10 70
170
32
°F • If fitted, open the mixing units
0 80
°C
circulator isolation valve to
purge and fill it.
13
• Open the air vent on the
flow arm, until all air has
been expelled and water is
discharged.
20
70
50
10
°F
0
°C
40
30 50
90 110
20
60
130
70
150
50
10 70
170
32
°F
0 80
°C
40
30 50
90 110
20
60
130
70
150
50
10 70
170
32
°F
0 80
°C
30
90
20
70
50
10
32
°F
0
°C
8
40
30 50
90 110
60
130
150
70
170
32
80
• Open first circuits return valve
followed by its flow valve.
10
40
30 50
90 110
20 60
130
70
150
50
10 70
170
32
°F
0 80
°C
• Repeat steps 6 & 7 for all
remaining circuits, and replace
the flow-meter locking rings.
12
• Close the flow arm fill/drain
valve.
40
50
110
60
130
150
70
170
80
14
• Close the return arm fill/drain
valve, turn off and disconnect
the water supply.
19