CFH Startup Guide
Part No. 750-293
3
1 - BEFORE STARTUP
Your Cleaver-Brooks boiler has been factory fire-tested and the control system pre-configured for a trouble-
free startup. To help ensure a successful lightoff and reliable operation, certain initial conditions should be
observed.
Do not attempt to place the boiler into service without verifying that all connections - fuel, steam and
water piping, electrical connections, stack, and combustion air provisions - have been installed properly
and in accordance with any applicable codes or regulations.
1.1 Operating Conditions
• The installation site should be as free as possible from vibration, dust, and corrosive media
• The controllers should be located as far as possible from sources of electromagnetic fields, such as
frequency converters or high-voltage ignition transformers
• Control panel must be connected to earth ground. For electrical wiring requirements, see wiring diagram
provided with the boiler or in the CFH manual.
Figure 1 CFH Connections
Boiler room ambient conditions
Relative humidity
< 85% non-condensing
Ambient temperature range
0
o
C to 50
o
C / 32
o
F to 122
o
F
Storage temperature range
-20
o
C to 60
o
C / -4
o
F to 140
o
F
Combustion air temperature
0
o
C to 50
o
C / 32
o
F to 122
o
F
Specifications
Input power
115 VAC single phase 60Hz
Recommended operating steam
pressure
Up to 135 psig (150# design)
Up to 13.5 psig (15# design)
Gas pressure requirements
See Table 1
GAS SUPPLY
CHEMICAL FEED
FEED WATER
COMB. AIR/
DIRECT VENT
WATER COLUMN DRAIN
GAUGE GLASS
DRAIN
CHEMICAL FEED
STEAM OUTLET
STACK OUTLET
SURFACE
BLOWOFF
BLOWDOWN
!
Warning
W h e n u s i n g d i r e c t v e n t
combustion in cold climates,
special care must be taken to
o b s e r v e c o m b u s t i o n a i r
temperature limits.
Failure to
follow this precaution may lead
to equipment damage or unsafe
operation.
