Part number 550-100-131/0120
– 71 –
®
gas
-
fired
water
boiler
— 220/299/300/399
Boiler Manual
EXPRESS SETUP —
e
xample
B
(continued)
1
Evergreen boiler.
2
Indirect water heater, if
used (domestic water
piping not shown) —
MUST be direct piped
to boiler to use default
control settings.
3
Relief valve, supplied
with boiler, field piped
— MUST be piped to
boiler supply connection
— see Figure 6, page 11
for information.
4
Relief valve pip-
ing to drain.
5
DHW circulator.
6
Isolation valves.
8
Expansion tank.
9
Air separator.
10
Flow/check or spring
check valves.
11
Purge/drain valves.
12
Boiler circula-
tor, supplied with
boiler, field piped.
14
Unions as needed
for service.
15
Return tempera-
ture sensor.
16
Supply tempera-
ture sensor.
20
Make-up water supply.
24
Zone circulators.
25
Boiler drain
valve, supplied with
boiler, field piped.
30
Pressure/temperature
gauge, supplied with
boiler, field piped.
31
Outdoor sensor.
32
Low water cut-off.
33
120VAC power to
boiler — see page 53.
35
EVG Control module.
= Items supplied with
boiler — all other items
supplied by installer.
2- or 3-Zone
SPACE HEATING
(Circulators without circulator relays) |
DHW
(Direct-piped)
