Weil-McLain CGA Series 2 Manual page 30

CGa Series 2 Gas-Fired Water Boiler — Boiler Manual
6b
Start-up — operate boiler
DO NOT
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
• Verify the boiler and system are
• Verify the
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 (MAX IS
THE PREFERRED SETTING).
30
proceed with boiler operation unless boiler and system have been filled with water
Section 9
and the
full of water
Start-up preparation
Table 5 Operating instruction location guide
Models Spark-ignited pilot
Honeywell VR8204/VR8304
CGa-25
to
Robertshaw 7200
CGa-6
White-Rodgers 36E
CGa-7
Honeywell VR8204/VR8304
&
White-Rodgers 36C
CGa-8
Operating instruction
procedure (see
.
Section 6
procedures of have been completed.
Gas
Natural/Propane
Natural
Natural
Natural/Propane
Natural
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.
Table 5
, below).
Page
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41
IMPORTANT
Part Number 550-142-900/0519