Weil-McLain Eco Tec 2 Series Advanced Manual page 32

®
ECO Tec series 2 gas-fired water boiler – advanced manual
EXPRESS Setup — Typical Application D
Boiler Model, Altitude and Fuel Type are critical settings.
injury, death or substantial property damage.
Figure 16 Typical Application D — multiple boiler system — (Combi & Heating Only Boilers) — setup requirements
(parameters not listed below can be left at factory default settings unless special needs indicate different settings)
Boiler Wiring and Control Settings
Boiler TT Wired
ID input from:
1 Zone 1 Tstat
2 Zone 2 Tstat
1
Master 3 No Wire
4 Zone 3 Tstat
1 Combi
2 Zone 4 Tstat
2
Shadow
3 Zone 5 Tstat
4 N/A
* System circulator will not be used if system is circulator zoned. Aux Pump/Output would not be required.
Priority # Setting
System Type
Priority 1 – Local 1
Run Blr Pump
(Boiler 2 only)
Run Aux Output
*** Outputs are 120 VAC maximum 2.2 amps. Use relay for other voltages or higher amperages.
Purpose
y Space heating with multiple zones using system
pump or zone pumps.
y DHW using Combi Boiler as one of the boilers in a
multiple boiler system (as shown in Shadow boiler,
page 31). Cannot combine multiple Combi Boiler's
DHW piping circuits together.
y DHW priority — on Combi boiler only. Heating only
boiler may work for space heating during DHW call.
Control setting notes
y See the table above for required and optional settings.
y The table follows the general setup required to
achieve the shown systems with shown priorities.
y Settings can be made using the WIZARD or by fol-
lowing 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.
– 32 –
SETUP FOR Figure 15, page 30 AS SHOWN
Input
Assignment
Priority 2 - Network 1
Priority 2 - Network 1
Aux Pump/Output *
Priority 2 - Network 1
Combi
Priority 2 - Network 1
Priority 2 - Network 1
N/A
An additional Zone Circ. could be used here, instead.
Priority Settings
Value
Combi-DHW
YES +
NO
+ Cannot be changed.
Failure to set correctly could result in severe personal
(See Figure 9, page 17 for items referenced)
Aux
Option
N/A
N/A
Any TT Input By It's Priority Settings
N/A
N/A
N/A
N/A
N/A
Priority # Setting
System Type
Priority 2 – Network 1
Run Blr Pump
(Boiler 1 only)
Run Aux Output
y Piping must be primary/secondary as shown.
y DHW and components must be installed per the
ECO Tec boiler manual in section Install boiler wa-
ter piping – Domestic Water Piping – Combi boiler.
BOILER
y Boiler circulator is installed internally within the
boiler.
y Follow all instructions in this manual for piping
boiler and system.
(cont.)
Wired to:
Output
***
1 Zone 1 Circ/Valve
2 Zone 2 Circ/Valve
3 System Circ Relay *
4 Zone 3 Circ/Valve
1 3 way valve
2 Zone 4 Circ/Valve
3 Zone 5 Circ/Valve
4 3 way valve
Value
Select heating
system type
YES +
YES
Part number 550-100-272/1021