Weil-McLain CGi 4 Series Manual page 34

CGi
SERIES 4 — GAS-FIRED WATER BOILER —
7b
Start-up — operate boiler
proceed with boiler operation unless boiler and system have been filled with water and all instructions
DO NOT
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
the boiler (Section
• 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/LWCO 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 also monitors the boiler temperature
changes via the temperature/LWCO sensor. It then determines
whether the available hot water will satisfy the demand and
adjusts 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) time 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.
34
and the
Section 9 Operating instruction
).
9c
full of water
procedures of
Start-up preparation
Boiler Manual
procedure applicable for the gas valve supplied on
.
have been completed.
Section 7
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.
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.
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
boiler may result in fire, causing severe per-
sonal injury, death or substantial property
damage.
Do not use
or sealing compounds
Severe damage to boiler will occur, result-
ing in substantial property damage.
Continual
around the
petroleum-based cleaning
in boiler system.
Part Number 550-142-302/0520