Boiler Economy Setting - Weil-McLain CGA 2 Series Installation And Maintenance Manual

COa Series 2 Gas-Fired Water Boiler - Boiler Manual
6b
Start-up - operate boiler
IAWARNINGI
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 su bstantial property damage. Before
starting the boiler, do the following:
Read manual Section 9 and the Operating Ins truction procedure (see Table 5, below).
Verify the boiler and system are full of water.
Verify the Start-up preparation procedures of Section 6 have been completed.
Table 5 Operating instruction location guide
Models Spark~gnlted pilot
Gas
Page
CGa-25
Honeywell VR8200NR8300
Natura.L!Propane
38
to
Robet1shaw 7200 Natural 39
CGa-6
White-Rodgers 36E
Natural
40
CGa-7 Honeywell VR8200NR8300 Natural/Propane
38
&
CGa-8
White-Rodgers 36C
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 BO ILER TEMP is used to adjust the
operating temperature setpoint, turning clockwise to increase
temperature setting and counterclockwise to decrease. \¥hen the
knob is turned to adjust temperature the display wiU brighten to
indicate adjustment mode. After temperature is set to desired
value, display wiU 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 caU for heat \¥hile 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. TI1e knob labeled ECONOMY
ADJUST provides an adj ustment between maximize (MAX) and
minimize (MIN) the delay. The maximum (MAX) adj ustment
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.
30
ADJUST ECONOMY TO DESIRED POSITION (MAX IS
THE PREFERRED SETTING).
N atural
41
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
reducin~
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 FOLWVliNG 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.
Part Number 550-142-779/0712