Weil-McLain Eco Tec 2 Series Manual page 88

ECO ® Tec series 2 gas-fired water boiler – boiler manual
EXPRESS SETUP — Example A
Multi- Zone SPACE HEATING (Circulators without circulator relays) | DHW (Direct-piped)
Boiler Model, Altitude and Fuel Type are
critical settings. 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 47.
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 circulators using control outputs to
operate zone circulators (4 zones if space heating
only; or 3 space heating zones plus DHW.)
• 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.
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 circulators supplied by installer. For alternate
zone wiring using a zone controller, see page 73.
BOILER
• Boiler circulator is installed internally within the
boiler.
• Follow all instructions in this manual for piping
boiler and system.
88
Control settings
( WiZArd )
in order of sequences
BOILER SETTINGS
BOILER MODEL
WWSD TEMP
HIGH ALTITUDE
INPUT/OUTPUT 1 (Assign to PRIORITY 1) (Note 1)
WHAT IS THE USE OF INPUT/OUTPUT 1?
WHAT PRIORITY IS INPUT #1?
WHAT SYSTEM TYPE IS INPUT/OUTPUT 1?
TARGET MODULATION SENSOR
TARGET ADJUST
MAX TARGET TEMP
RUN BOILER PUMP?
RUN AUX PUMP/OUTPUT?
INPUT/OUTPUT 2 (Assign to PRIORITY 2)
WHAT IS THE USE OF INPUT/OUTPUT 2?
WHAT PRIORITY IS INPUT #2?
WHAT SYSTEM TYPE IS INPUT/OUTPUT 2?
TARGET MODULATION SENSOR
TARGET ADJUST
MAX TARGET TEMP
MIN TARGET TEMP
OUTDOOR TEMP FOR MIN TARGET
OUTDOOR TEMP FOR MAX TARGET
TARGET BOOST TIME
RUN BOILER PUMP?
RUN AUX PUMP/OUTPUT?
INPUT/OUTPUT 3 (Assign to PRIORITY 2)
If PRIORITY 2 is assigned, no further steps are required. If PRIORITY 3
is assigned, repeat the steps from INPUT/OUTPUT 2, above.
INPUT/OUTPUT 4 (Assign to PRIORITY 2)
If PRIORITY 2 is assigned, no further steps are required. If PRIORITY 3
is assigned, repeat the steps from INPUT/OUTPUT 2, above.
PRIORITY SWITCH TIMES:
P1 MAX ON TIME
P2 MAX ON TIME
P2 MIN ON TIME
P3 MIN ON TIME
Finish the WIZARD
ENTER TIME, DATE AND MAINTENANCE INFORMATION AS PROMPTED
* System sensors are optional but recommended. Otherwise, set target modulation
sensor to boiler out.
f DHW is not used, provide a fourth space heating zone
Note 1: I
by setting up INPUT/OUTPUT 1 exactly the same as INPUT/
OUTPUT 2. Assign INPUT/OUTPUT 1 to PRIORITY 2. Wire
the fourth zone thermostat to J17 – 1&2 and its circulator to
T2 – 4, 5, 6.
(continued)
Bold italic -
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 closest altitude if over 2,000 feet
HEAT/DHW DEMAND
Select PRIORITY 1
DHW (D)
BOILER OUT (D)
NONE (D)
D (or change if desired)
Yes (D)
D (not applicable)
HEAT/DHW DEMAND
PRIORITY 2
Select correct system type
* System Supply (recommended)
ODT (D)
(Outdoor Temp sensor must be
installed)
D (or change if desired)
D (or change if desired)
D (or change if desired)
D (or change if desired)
D (or change if desired)
YES (D)
D (not applicable)
D (or change if desired)
D (or change if desired)
D (or change if desired)
D (not applicable)
Part number 550-100-270/0122