Express Setup - Example C - Weil-McLain EcoTec 80 Manual

G -
®
ECO Tec
AS FIRED WATER BOILER
EXPRESS SETUP — Example C
Failure to set correctly could result in severe
personal injury, death or substantial property damage.
Incorrect setup or piping can result in severe personal
injury, death or substantial property damage.
Use primary/secondary piping or equivalent unless system
meets requirements on page 46.
Verify that the correct system type is selected on the
control and that operating temperature settings are
suitable for the system. System and structural damage can
occur if temperatures are too high.
Purpose
Space heating with multiple zones.
Zoning with zone valves.
valves — the voltage on the valve end switch will damage
the control. Use only 4-wire zone valves with isolated
end switches.
DHW piped directly to the boiler.
DHW priority — space heating is disabled during call
for heat from water heater.
Control setting notes
See the table at right for required and optional settings.
The sequence in the table follows the WIZARD.
If not using the WIZARD, follow instructions elsewhere
in this manual to enter the settings manually.
The system circulator is wired to OUTPUT 2. It will be
activated on any call for heat from a zone valve end switch.
Circulators and piping
Provide an external relay and external power to
any circulator if its load rating exceeds 2.2 amps
FLA, 3.6 amps locked rotor, or 16.4 amps in rush.
Piping must be primary/secondary as shown.
DHW circulator must be selected to handle the pressure
drop through the water heater and piping. DHW
circulator supplied by installer.
For some large indirect water heaters, the required flow
rate may require piping the water heater differently.
The control settings in table at right provide DHW
priority — space heating will be discontinued during a
call for DHW.
Zone valves and system circulator supplied by installer.
For alternate zone wiring using a zone controller, see
page 71.
A by-pass pressure regulator is recommended when used
in a zone valve system as shown in this express setup.
Boiler circulator is installed internally within the boiler.
Follow all instructions in this manual for piping boiler
and system.
OUTPUT 1 to NONE. Keep all other wiring as
shown at right and follow all settings given above
for PRIORITY 2.
For Combi models, INPUT/OUTPUT 1 and 4
are NOT used and Priority 1 is assigned to
Combi DHW. Use INPUT/OUTPUT 2 and 3
and Priority 2 and 3 for this application.
82
–
80/110/150/199
SPACE HEATING
use 3-wire zone
, set the USE of INPUT/
B
DHW (Direct-piped)
C
ONTROL SETTINGS
( WIZARD )
IN ORDER OF SEQUENCES
BOILER SETTINGS
INPUT/OUTPUT 1
INPUT/OUTPUT 2
INPUT/OUTPUT 3
PRIORITY SWITCH TIMES:
INPUT/OUTPUT 4
PRIORITY SWITCH TIMES:
Finish the WIZARD
M
OILER ANUAL
BLACK -
OBLIQUE VALUE MUST BE SET OR VERIFIED
D — ;
DEFAULT ACCEPTABLE CHANGE ONLY IF DESIRED
Verify model number is correct
Default (70 °F) or as required
Set to YES if above 5,500 feet
HEAT/DHW DEMAND
Select PRIORITY 1
DHW (D)
BOILER OUT (D)
NONE (D)
Yes (D)
HEAT/DHW DEMAND
PRIORITY 2
Select correct system type
Boiler In (D)
ODT (D)
(Outdoor Temp sensor must be installed)
YES (D)
NONE
NONE
Part number 550-100-260/0520