Weil-McLain Evergreen EVG 220 Manual page 71

®
gas
EXPRESS SETUP — e
2- or 3-Zone SPACE HEATING (Circulators without circulator relays) | DHW (Direct-piped)
Part number 550-100-131/0120
-
fired water boiler
— 220/299/300/399 Boiler Manual
B
xample
(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.
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