Model CFC ClearFire Commercial Boilers
30 Rev. 05-2012
Table B5-21. Model CFC Maximum Condensation
As prescribed by local codes, this condensate may be discharged directly to the
drain or treated using an optional treatment assembly. Figure B5-21 depicts piping
without the treatment assembly and Figure B5-22 shows the optional treatment
assembly.
Condensate Piping for Multiple Boilers
The number of condensate treatment tanks
required for multiple boiler installations depends
on the total amount of condensate produced by
the system. As a general rule, CB recommends
one tank per 5 million BTU/hr of boiler capacity
(5.0 MMBTU/hr). Model CFC capacities are in
Table B5-22.
See Figure B5-23 and Figure B5-24 for suggested
piping. A drain trap is built into the condensate
tank. Make-up water must be supplied at the
connection shown in order to prevent flue gas from
entering an idle boiler. An internal float in the condensate tank activates the make-
up water valve.
Figure B5-22. Condensate Piping Direct To Drain
Boiler Size
Gallons Per Hour - GPH
(Liters Per Hour - L/H)
500 3.5 (13.2)
750 5 (18.9)
1000 7 (26.5)
1500 9 (34)
1800 12 (45.4)
2500 17 (64.4)
3300 22 (83.3)
Boiler Operating @ maximum in full condensing mode.
Table B5-22. CFC capacities
CFC Model BTU/hr
3300 3,300,000
2500 2,500,000
1800 1,800,000
1500 1,500,000
1000 1,000,000
750 750,000
500 500,000
1
2
3
1. Removable front
2. Min. 6” water trap
3. Plastic drain pipe
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