Ultra Boiler Manual

Part number 550-100-440/0122
64
  
 (continued)
Figure 65 Piping layout — typical piping for multiple Ultra boilers, using isolation exchanger
Use isolation heat
exchanger for:
1.
L
arge volume systems with high
mineral content in water.
2. Systems exposed to untreated
quantities of makeup water.
3.
Old s
ystems severely con-
taminated with scale and rust
b
uildup inside piping and heat
distribution units.
4.
P
rocess applications.
5.
C
ommercial service water ap-
plications.
6.
H
igh water pressure applica-
tions, requiring pressure relief
set
ting in heating system more
than 30 PSIG (tall buildings).
See notes below.
Legend — Figure 65
1 Flow/check valve (each boiler)
2 Isolation valves (when used)
3 Cap
4 Easy-Fit® Manifold (supply) — layout
and size per page60
5 Easy-Fit® Manifold (return) — layout
and size per page60
6a Heating system circulator (exchanger
tube-side)
6b Heat exchanger shell-side circulator
7 Expansion tanks (diaphragm type)
8 System air eliminator
9 System automatic air vent
13 Cold water supply connections
17 Boiler circulator (each boiler)
18 Heating system supply
19 Heating system return
20 Boiler relief valve and discharge piping,
installed per Ultra Boiler Manual
30 Strap system supply and return sensors to
lines as shown, at least 6 pipe diameters (but
no more than 3 feet) from boiler connection
tees.
31 Temperature/pressure gauge
Notes:
1. Contact heat exchanger manufacturer for heat exchanger
shell-side and tube-side piping and circulator require-
ments. Tube-side ow and temperatures must meet heat-
ing system requirements.
2. Contact heat exchanger manufacturer for sizing heat
exchanger.
3. Heat exchanger shell-side circuit requires its own expan-
sion tank as shown.
4. Heating system circuit requires its own expansion tank,
as shown, plus its own relief valve set to protect heating
system and heat exchanger piping and components.
5. When individual isolation valves are used, individual
boiler and level controls may be required.
2
17
31
20
2
17
31
U3159
1
3
4
5
6b
7
8
9
13
18
19
2
2
2
2
13
7
6a
2
2
2
Heat exchanger
8
9
Boiler-side circuit
Heating system circuit
31
2
17
31
2
17
30
30
20
31
2
17
20
20
20
1
2
1
2
1
2