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E. FILLING CONDENSATE TRAP WITH WATER
ON THE INITIAL START UP THE CONDENSATE TRAP MUST BE MANUALLY FILLED WITH
WATER
The following are the steps required to initially fill the condensate trap for start up, these steps are
only required at the initial start up or if maintenance requires draining of the condensate trap:
1. Disconnect the vent condensate drain line from the bottom of the vent tee on the boiler.
2. Pour about 1 cup of cold tap water into the vent drain line with a proper funnel.
3. Excess water should go through the overflow and out through the condensate drain line.
Verify proper operation of the drain line (or external condensate pump if used).
4. Reinstall the vent drain line.
F. CHILLED WATER PIPING
The boiler, when used in connection with a refrigeration system, must be installed so the chiller
medium is piped in parallel with the boiler with appropriate valves to prevent the chilled medium
from entering the boiler.
The boiler piping system of a hot water boiler connected to heating coils is located in air handling
units where they may be exposed to refrigerated air circulation must be equipped with flow control
valves or other automatic means to prevent gravity circulation of the boiler water during cooling
cycle.
A. CONNECTIONS AND TERMINATION
For boilers connected to gas vents or chimneys, vent installations shall be in accordance with part
7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223. l-latest revision,
CAN/CGA-B149.1 and B149.2, and applicable provisions of the local building codes.
Provisions for combustion and ventilation air must be in accordance with section 5.3, Air For
Combustion and Ventilation, of the National Fuel Gas Code,ANSI Z223. l-latest revision,
CAN/CGA-B149.1 and B149.2, or applicable provisions of the local building code.
These boilers require a dedicated direct vent system. All air for combustion is taken directly from
outdoors through the combustion air intake pipe. All flue products are discharged to the outdoors
through the vent pipe.
1. See Fig.9 & 10 for combustion air and vent pipe roof and sidewall termination. (Roof
termination is preferred) Combustion air and vent pipes must terminate together in same
atmospheric pressure zone as shown. Construction through which vent and air intake pipes
may be installed is a maximum 24 inches, minimum 1_"thickness.
2. Combustion air and vent pipe fittings must conform to American National Standards Institute
(ANSI) standards and American Society for Testing and Materials (ASTM) standards D1784
(schedule-40 CPVC), D1785 (schedule-40 PVC), D2665 (PVC-DWV), D2241 (SDR-21 and
SDR-26 PVC), D2661 (ABS-DWV), or F628 (schedule-40 ABS). Pipe cement and primer
must conform to ASTM standards D2564 (PVC) or D2235 (ABS).
2O
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