Install Instructions

Part number 550-100-131/0715
– 67 –
™
GAS-FIRED WATER BOILER — Boiler Manual
EXPRESS SETUP — EXAMPLE A (continued)
 Evergreen boiler.
 Indirect water heater, if
used (domestic water
piping not shown) —
MUST be direct piped
to boiler to use default
control settings.

Relief valve, supplied
with boiler, field piped
— MUST be piped to
boiler supply connection
— see Figure 6, page 11
for information.
 Relief valve pip-
ing to drain.
 DHW circulator.
 Isolation valves.
 Expansion tank.
 Air separator.
 Flow/check or spring
check valves.
 Purge/drain valves.

Boiler circula-
tor, supplied with
boiler, field piped.
 Unions as needed
for service.
 Return tempera-
ture sensor.
 Supply tempera-
ture sensor.
 Make-up water supply.
 Zone circulators.

Boiler drain
valve, supplied with
boiler, field piped.

Pressure/temperature
gauge, supplied with
boiler, field piped.
 Outdoor sensor.
 Low water cut-off, if used.
 120VAC power to
boiler — see page 51.
 EVG Control module.
 = Items supplied with
boiler — all other items
supplied by installer.
-ULTIZONESPACE HEATING#IRCULATORSWITHCIRCULATORRELAYS\DHW
(Direct-piped)
