Weil-McLain Evergreen EVG 110, Manual

Page: 73 / 144

Part number 550-100-191/0917
73
®
g
as-fired water boiler —
70/110/155
Boiler Manual
EXPRESS SETUP — Example A (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, fi eld piped
— MUST be piped to
boiler supply connection
— see Figure 8, page 14
for information.
4
Relief valve piping
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 circulator,
supplied with boiler,
fi eld piped.
14 Unions as needed
for service.
15 Return temperature
sensor.
16 Supply temperature
sensor.
20 Make-up water supply.
23 DHW Temperature and
Pressure relief valve
24 Zone circulators.
25 Boiler drain
valve, supplied with
boiler, fi eld piped.
30 Pressure/temperature
gauge, supplied with
boiler, fi eld piped.
31
Outdoor sensor.
32
Low water cut-off.
33 120VAC power to
boiler — see page 56 .
35 EVG Control module.
= Items supplied with
boiler — all other items
supplied by installer.
Multi-zone SPACE HEATING (Circulators with circulator relays) | DHW
(Direct-piped)