Install Instructions
Evergreen Control operation (continued)
EVG control Priorities & Input/Outputs
s For heating installations with multiple systems, the EVG control
uses PRIORITIES to determine the order of operation of the
systems. The control’s MAX and MIN time settings determine the
maximum and minimum times a system will be operated before
being turned off to allow another system to operate. A typical
example is DHW priority — heat demand from the DHW system
is given preference over space heating, if set to use Priority 1.
s Each PRIORITY has its own set of operating parameters. The
control prompts the user to select the system type (finned tube
baseboard, DHW, etc.) and is factory programmed with param-
eters suited to each of these system types. The user can also choose
CUSTOM to create a system type.
s The EVG control provides up to three priorities for single boiler
applications and up to four priorities for network boiler appli-
cations. The order of operation is: PRIORITY 1, PRIORITY 2,
PRIORITY 3.
s The 120VAC power output to the boiler circulator is provided by
a relay located on the boiler’s Pump/Communications Board. For
each of the priorities, the control can be setup to run the boiler
pump or to leave it off. It is recommended to set Blr Circ to OFF
for DHW that is directly piped with its own DHW Circ.
s Each boiler has three input/output pairs (INPUT/OUTPUT 1,
2 and 3. Control setup prompts the user to assign each of these
I/O pairs to a PRIORITY. The EVG control then knows which
system (priority) to operate when the input receives a call for
heat. On a call for heat to an input, the EVG control closes the
corresponding output (120VAC) and begins controlling the boil-
ers according to the setup for the assigned priority.
s The MAX ON TIME setting controls the maximum time a prior-
ity will be allowed to run before switching to a lower priority’s call
for heat. The MIN ON TIME setting controls the minimum time
a priority will be operated before switching to a higher priority’s
call for heat, or the next lower priority.
s When multiple inputs are set up on the same priority, they will
run at the same time if the priority and inputs are active.
Evergreen control operation
s The control responds to signals from:
s Room thermostats.
s DHW aquastats (if used).
s Temperature sensors (boiler return, boiler supply, flue
temperature) and, when used, system supply and system
return, outdoor temperature).
&OROPTIMALPERFORMANCEIT
ISRECOMMENDEDTOINSTALLTHESYSTEMSUPPLYANDRETURN
SENSORS
s The control automatically adjusts blower speed (and gas flow
rate) to match boiler output to space heating and/or DHW
heating demand.
s The control provides three inputs and three outputs (for circula-
tors or auxiliary devices) plus a fourth boiler circulator output.
s Outdoor reset must be used in all applications that are not exempt
as described on page 127.
s The outdoor temperature is used for supply temperature reset
operation and for the warm weather shut down (WWSD)
option.
s System presets:
s The Evergreen control provides presets by system type (see
Figure 70, page 72 for complete list).
Part number 550-100-131/0715
– 62 –
™
GAS-FIRED WATER BOILER — Boiler Manual
Setting Up the Boiler
Step 1
s $%4%2-).%INPUTOUTPUTNEEDSn
s 7HATARETHEINPUTSn4HERMOSTATSREMOTECONTACTSEND
SWITCHESETC
s 7HATDOESEACHCONTROLSOUTPUTNEEDTODOnOPERATEA
PUMPACTIVATEANAIRLOUVERETC
Step 2
s #ONNECTWIRINGTOTHECONTROLINPUTSANDOUTPUTSTO
ACCOMPLISHTHEPURPOSESSETIN3TEP
Step 3
s )NSTALLTHEBOILERFOLLOWINGALLINSTRUCTIONSINTHE%VERGREEN
"OILER-ANUALBEFOREPROCEEDINGFURTHER
s 3EETHE!DVANCED-ANUALFORMULTIPLEBOILERINSTALLATIONS
s &OLLOWINSTRUCTIONSINTHE"OILER-ANUALTOSTARTUPAND
POWERTHEBOILER
Step 4
s 5SETHE7):!2$BELOWORENTERCONTROLPARAMETERS
MANUALLYSKIP7IZARD
Evergreen control WIZARD
s The Wizard is available on initial setup of the boiler. It leads
through a step-by-step setup procedure designed for the
application chosen.
s Context-sensitive help is available to explain the purpose
of key setup items.
s Advanced settings for single boiler applications can be ac-
cessed manually from the Contractor menu.
WIZARD Sequence
Boiler
Settings
s !LTITUDEn nMUSTBESETCORRECTLYFORPROPER
OPERATION
s 773$nSETOUTDOORTEMPERATUREABOVEWHICHSPACE
HEATINGWILLBEDEACTIVATED
s &UELNATURALGASORPROPANEn
nMUSTBESET
CORRECTLYFORPROPEROPERATIONnCONTROLWILLPAUSEUNTILTHIS
VALUETOSELECTED
Inputs/
Outputs
s 3ELECTTHEUSAGEOFINPUTSAND
s $ETERMINEUSAGEOFOUTPUTSANDOUTPUTSCORRESPOND
TOINPUTS
Set
Priorities
s !SSIGNPRIORITIESANDTOTHEINPUTS
System
Settings
s 3ETSYSTEMSETTINGSORLEAVEATTHEIRDEFAULTS
System
Types
s 3PECIFYWHATSYSTEMTYPEISCONNECTEDTOEACHOFTHETHREE
OUTPUTSEACHSYSTEMTYPECAUSESTHECONTROLTOPRESET
OPERATINGTEMPERATURES
Output
Activation
s 7HENAPPLICABLE3ELECTWHENTOACTIVATE!5805-0
/54054nBYINPUTALWAYSONEXTERNALSWITCHETC
Priority
Switching
s 3ETMAXIMUMANDMINIMUMTIMINGSFORPRIORITIES
Date/Time
s 3ETDATEANDTIMEnIMPORTANTFORCONTROLDIAGNOSTICLOGGING
Information
s 3ETINSTALLERNAMEANDCONTACTINFORMATION
s %NTER#0INSTALLDATEMAINTENANCEDATEETC
s 3ETAUTOMATICMAINTENANCENOTIlCATIONTIMING