Install Instructions

Part Number 550-142-902/1016
CGi
GAS-FIRED WATER BOILER — SERIES 3 — Boiler Manual
34
Start-up — operate boiler
7b
If you discover evidence of any gas
leak, shut down the boiler at once. Find
the leak source with bubble test and
repairimmediately. Do not start boiler
again until corrected. Failure to comply
could result in severe personal injury,
death or substantial property damage.
Eliminate all system leaks. Continual
fresh makeup water will reduce boiler life.
Mineralscanbuildupinsections,reducing
heat transfer, overheating cast iron, and
causing section failure.
Glycol or antifreeze leaks around the
boiler may result in fire, causing severe per-
sonal injury, death or substantial property
damage.
 Do not use petroleum-based cleaning
or sealing compounds
in boiler system.
Severedamagetoboilerwilloccur,result-
ing in substantial property damage.
DO NOT proceed with boiler operation unless boiler and system have been filled with water and all instructions
and procedures of previous manual sections have been completed. Failure to do so could result in severe personal
injury,deathorsubstantialpropertydamage.Beforestartingtheboiler,dothefollowing:
• Readmanual
Section 9 and the Operating instruction procedure applicable for the gas valve supplied on
theboiler(Section9c).
• Verifytheboilerandsystemare
full of water.
• Verifythe
Start-up preparation procedures of Section 7 have been completed.
Adjust boiler control settings
BOILER OPERATING TEMPERATURE
With power turned on, control module receives a signal from
the temperature sensor and displays boiler temperature. The
control knob labeled BOILER TEMP is used to adjust the
operating temperature setpoint, turning clockwise to increase
temperature setting and counterclockwise to decrease. When the
knob is turned to adjust temperature the display will brighten to
indicateadjustmentmode.Aftertemperatureissettodesired
value, display will dim after approximately 5 seconds to indicate
measurement mode.
• ADJUST BOILER OPERATING TEMPERATURE TO
DESIRED SETPOINT.
BOILER ECONOMY SETTING
TocomplywithDepartmentofEnergyregulations,thecontrol
module circulates available hot water before turning on the boiler
to attempt to satisfy a call for heat. While attempting to satisfy
the heat demand, the control module also monitors the boiler
temperature changes via the temperature sensor and determines
whether or not the available hot water will satisfy the demand,
adjusting the time delay to turn on the boiler until it determines
thatadditionalheatwillbeneeded.TheknoblabeledECONOMY
ADJUSTprovidesanadjustmentbetweenmaximize(MAX)and
minimize(MIN)thedelay.Themaximum(MAX)adjustment
position should be used to maximize energy savings. Turning the
knob counterclockwise decreases the delay time and should only
be used in the event that the heated space becomes uncomfortable.
• ADJUST ECONOMY TO DESIRED POSITION.
IMPORTANT
InaccordancewithSection325(f)(3)oftheEnergyPolicy
andConservationAct,thisboilerisequippedwithafeature
that saves energy by reducing the boiler water temperature
as the heating load decreases. This feature is equipped with
an override which is provided primarily to permit the use of
an external energy management system that serves the same
function.
THISOVERRIDEMUSTNOTBEUSEDUNLESSATLEAST
ONEOFTHEFOLLOWINGCONDITIONSISTRUE:
• Anexternalenergymanagementsystemisinstalledthat
reduces the boiler water temperature as the heating load
decreases.
• This boiler is part of a modular or multiple boiler system
havingatotalinputof300,000BTU/hrorgreater.
• This boiler is equipped with a tankless coil.