81
Figure 9.10: Isolation of the Boiler from Oxygenated Water with a Plate Heat Exchanger
IX. System Piping
(continued)
D. Piping for Special Situations
1)
Systems containing oxygen - Many hydronic systems contain enough dissolved oxygen to cause severe
corrosion damage to a this boiler. Some examples include:
• Radiant systems that employ tubing without an oxygen barrier.
• Systems with routine additions of fresh water.
• Systems which are open to the atmosphere.
If the boiler is to be used in such a system, it must be separated from the oxygenated water being heated with
a heat exchanger as shown in Figure 9.10. Consult the heat exchanger manufacturer for proper heat
exchanger sizing as well as flow and temperature requirements. All components on the oxygenated side of the
heat exchanger, such as the pump and expansion tank, must be designed for use in oxygenated water.
2)
Piping with a Chiller - If the boiler is used in conjunction with a chiller, pipe the boiler and chiller in parallel.
Use isolation valves to prevent chilled water from entering the boiler.
3)
Air Handlers
- Where the boiler is connected to air handlers through which refrigerated air passes, use flow
control valves in the boiler piping or other automatic means to prevent gravity circulation during the cooling
cycle.
1
Boiler (Right Side View)
2
Isolation Valve
3
Swing Check Valve
4
Central Heating Primary Circulator
5
Plate Heat Exchanger
6
Air Separator
7
Automatic Air Vent
8
Expansion Tank
9
Automatic Fill Valve
10 Cold Water Line
11 Relief Valve
12 Relied Valve Discharge Piping
13 Drain Valve
14 Primary/Secondary Connection
From Oxygenated
System
13
12"
Do Not Exceed
Summary of Contents for Raptor RPTR085
Page 1: ...1...
Page 13: ...13 Figure 5 1 Wall Layout Mounting Hole Location V Mounting The Boiler continued...
Page 87: ...87 Figure 10 5 Internal Wiring Ladder Diagram X Wiring continued...
Page 88: ...88 X Wiring continued...
Page 97: ...97 Operating Instructions XI Start Up and Checkout continued...
Page 142: ...142 XV Repair Parts continued 3A 3B 3C 3D 3F 3E 3G 3H 3O 3P 3Q 3R 3J 3K 3I 3M 3N 3L All Models...
Page 148: ...148 XV Repair Parts continued 6D 6B 6A 6E 6I 6G 6L 6N 6H 6C 6K 6M 6C 6C 6J 6J 6F All Models...
Page 172: ...172...
