ENERGY KINETICS EK1C, Installation & Service Manual

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Accel CS Boiler - Gas Heat - Eighth Edition – January, 2015 24
COMBUSTION AIR
The ACCEL CS is provided with a sealed outer jacket that when piped to the air outside the building provides a clean
fresh air supply for combustion. Piping of outside air directly to the boiler isolates the boiler from the home environment and
any of the contaminants often found in indoor air. The Accel CS comes from the factory with a 3” PVC adapter installed at
the top of the boiler directly behind the stainless steel vent connector. The outside air source must be located high enough
above grade to be at least 12” (24” preferred) above expected snow accumulation. The use of PVC pipe is suitable for
piping the air intake only. See venting drawings for recommended placement locations of the combustion air pipe
termination on the sidewall. Additionally, you may run corrugated polypropylene pipe in the chimney flue if space allows.
If it is determined that piping combustion air to the boiler is not feasible with the venting option used, you must insure that
there is adequate combustion air available by providing no less than 2 unobstructed openings of at least 30 square inches
each into the boiler room.
One of these must be no more than 12” from the ceiling and one must be at least 12” above the floor.
NOTICE: If a screen or louvers are used on the outside of these openings, the size of the openings must be increased
enough to balance out this air flow restriction.
If the building construction is unusually tight (see National Fuel Gas Code for definition), you will need to provide air
openings into the building. Provide two openings sized and located the same as the two described above. Sometimes
vented attic space is a good place to route the upper opening.
CONDENSATE DRAIN TRAP
1. Locate condensate trap kit.
2. Refer to photo for assembly of trap.
3. Remove threaded drain nut and rubber seal from trap.
4. Put flexible PVC drain tube through the threaded nut and install
rubber seal (flange down) as shown in Figure
5. Push drain tube up into trap body and hand tighten the drain nut (The
shoulder on the rubber seal should seat against the trap body).
NOTICE: Use of ¾” PVC, CPVC, EPDM or polypropylene pipe or flex
hose is acceptable for trap drain use. When using pipe, make
sure pipe I.D. and O.D. are well de-burred to allow mating
with trap body.
6. Make sure the trap ball is located inside the trap body.
7. With trap retaining nut loose, slide the trap body onto the boiler
condensate outlet. Firmly hand tighten the nut.
WARNING: The condensate trap ball MUST be in place in the
condensate trap assembly to prevent possible flue gas
leakage through the condensate drain system. Do not
install condensate trap if ball is missing, replace the entire
assembly.
NOTICE: 13/16”I.D. hose may be used for condensate drain piping.
NOTICE: Only use drain line materials approved by the authority having
jurisdiction. In absence of such authority, PVC and CPVC pipe must
comply with ASTM D1785,F441 or D2665. Cement and primer must
comply with ASTM D2564 or F493.
8. Continue the pipe from the drain assembly to a floor drain or condensate
pump.
9. When selecting a condensate pump (if needed), select one that is
approved for use with condensing boilers or furnaces that is equipped with an
overflow switch to prevent damage from condensate spillage. Pump should
have a minimum capacity of 3 GPH.
10. Condensate from the Accel CS boiler will be slightly acidic with a pH content below 4.0. Install a neutralizing filter if
required by local code or draining into metal pipe.
NOTICE: Condensate pumps (if equipped) with integrated high water cutoff switches (HWCO) should be wired into the
junction box in place of the jumper as noted in drawing SYS-08-300. This will cause a lockout if the condensate reservoir
reaches the cutoff level- indicating a pump failure.