Weil-McLain CGi Series 3 Installation And Maintenance Manual page 34

CG i
GAS-FIRED wATER BOILER- sERIEs a -
Boiler Manual
7b
Start-up - operate boiler
r-1&:-:-:- W :-: A -:: R .,- N "' IN c-G :' \ 1
DO NOT proa!ed with boiler operation mliess boiler and system have been tilled 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 OperaUng 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 d isplays 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
Th comply with Department of Energy
regulations, the control
module circulates available hot water before turning o n the boiler
to attempt to satisfy a call for heat. While attempting to satisfy
the heat demand, the control module also mo nitors 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 (JV!AX) and
minimize (MIN) the delay. The max:immn (JV!AX) adjustment
position should be used to ma,imize energy savings. Turning the
knob counterclockwise decreases the delay time and should o nly
be used in the event that the heated space becomes uncomfortable.
• ADJUST ECONOMY TO DESIRED POSmON (MAX IS
THE PREFERRED SETTING).
IMPORTANT
In accordana! 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 sam e
function.
34
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.
I&WARNINGI
I& WARNING!
I& WARNING!
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 tire, 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.
Part
Number 550-142-780/0712