User Guide

®
CONDENSING GAS BOILER — 70/110/155 Advanced Manual
Part number 550-100-193/0817
– 24 –
Fast-Track Setup — Typical Application C (cont.)
Boiler Model, Altitude and Fuel Type are critical settings. Failure to set correctly could result in severe personal
injury, death or substantial property damage.
Boiler Wiring and Control Settings (See Figure 12, page 22 for items referenced)
Boiler
ID
TT
input
Wired
from:
Input
Assignment
Aux
Option
Output
Wired to:
***
1
Master
1 No Wire Aux Pump/Output ** Any TT Input By It's Priority Settings ** 1 System Circ
2 No Wire Aux Pump/Output Any TT Input By It's Priority Settings 2 Shell-side Circ
3 Zone 1 Tstat Priority 2 - Network 1 N/A 3 Zone 1 Circ/Valve
2
Shadow
1 Zone 2 Tstat Priority 2 - Network 1 N/A 1 Zone 2 Circ/Valve
2 Zone 3 Tstat Priority 2 - Network 1 N/A 2 Zone 3 Circ/Valve
3 Zone 4 Tstat Priority 2 - Network 1 N/A 3 Zone 4 Circ/Valve
3
Shadow
1 Zone 5 Tstat Priority 2 - Network 1 N/A 1 Zone 5 Circ/Valve
2 Zone 6 Tstat Priority 2 - Network 1 N/A 2 Zone 6 Circ/Valve
3 Zone 7 Tstat Priority 2 - Network 1 N/A 3 Zone 7 Circ/Valve
4
Shadow
1 Zone 8 Tstat Priority 2 - Network 1 N/A 1 Zone 8 Circ/Valve
2 Zone 9 Tstat Priority 2 - Network 1 N/A 2 Zone 9 Circ/Valve
3 Zone 10 Tstat Priority 2 - Network 1 N/A 3 Zone 10 Circ/Valve
** System circulator will not be used if system is circulator zoned. Aux Pump/Output would not be required.
An additional Zone CIRC. could be used here, instead.
*** Outputs are 120 VAC maximum 2.0 amps. Use relay for other voltages or higher amperages.
Priority Settings
Priority # Setting Value Priority # Setting Value
Priority 2 – Network 1
System Type
Select CUSTOM and set
temperatures and other as
needed for heat exchanger
Run Blr Pump YES
Run Aux Output YES
Figure 13 Typical Application C — multiple boiler system — setup requirements (parameters not listed below can be
left at factory default settings unless special needs indicate different settings)
Purpose
s Isolation heat exchanger for applications with high system
pressure (over 30 PSIG), such as tall buildings. Typical
application shown with shell and tube heat exchanger
provided by installer. Boiler maximum allowable pressure
is 30 PSI. Space heating provided by hot water supply of
heat exchanger to terminal units.
s System circulator and shell-side circulator are activated on
call for heat by the heating system.
s DHW system not shown.
Control setting notes
s See the tables in Figure 13 for required and optional
settings.
s The table follows the general setup required to achieve
the shown systems with shown priorities.
s Settings can be made using the WIZARD or by following
instructions elsewhere in this manual to enter the settings
manually.
Circulators and piping
Provide an external relay and external power to any cir-
culator if its load rating exceeds 2.2 amps FLA, 3.6 amps
locked rotor, or 16.4 amps in rush.
s Piping must be primary/secondary as shown, with the
boiler piped in a secondary loop.
s Size circulators for required flow.
s Zone circulators and relays supplied by installer. For
alternate zone wiring using a zone controller, see page 36.