40
Installation and operation manual
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DTHC-V4-2020
CONDENSATE DRAIN LINE INSTALLATION RECOMMENDATIONS:
1.
Measure distance between the two drain outlets of the heat exchanger.
2.
Cut a short section of ½” i.d. reinforced pvc tube or rigid cpvc pipe
(by others). Short section length
equals measured distance minus 1 in.
3.
Connect a 90deg elbow and tee fittings (by others) to this short tube or pipe section as shown on
figure #2. Note 1: as you push the tube will expand over the barb and as the tube relaxes to its original
diameter the barb will grip and seal it. Note 2: always use plastic fittings, steel will deteriorate with
acidic water.
4.
Connect the loose ends of the 90deg elbow and tee fitting to the rigid drain tubes that are already
connected to the drain outlets of the heat exchanger.
5.
Measure distance between the heat exchanger and where the drain line is ending. Cut a long section
of ½” i.d. reinforced pvc tube or rigid cpvc pipe (by others). Long section length =
measured distance.
6.
Pull the long section of drain tube or pipe (by others) through the entry hole that is located on the
exterior side wall (on the same side as the gas supply inlet).
7.
Connect the long section of drain tube or pipe to the tee fitting.
8.
(optional step) secure tube or pipe with worm gear metal clamp.
9.
Make sure the drain line is sloped a minimum of 1/4-inch per foot, starting from the heat exchanger to
the where the drain line terminates, or it could cause drain clogs.
10.
To prevent flue gas from entering the building and living space you must form a p-trap before
discharging the condensate into the sewer drain pipe (or where the condensate piping terminates).
The p-trap must be filled with water before starting the unit.
11.
Once your condensate drain line installation is completed start the operation of the heat exchanger
and inspect all your installation to make sure that there a no condensate and flue gas leakage.
Optional neutralization kit
12.
The condensate is slightly acidic, however, local codes may require it to be neutralized prior to
entering the drainage system. An optional, field installed, condensate neutralization system is
available from our factory.
13.
If you are using the optional condensate neutralization tank (axiom industries nc-2 or nt25) it must be
installed inside the building in a heated room or it could freeze and back water up into the heat
exchanger which will cause serious damage.
14.
To prevent flue gas from entering the building and living space make sure you have installed a
condensate trap before discharging the condensate into the sewer drain pipe (or where the
condensate piping terminates) and before it reaches the condensate neutralization tank which does
not provide the required flue gas trap.
15.
For more details about the condensate neutralization tank please refer to the manufacturer
installation and operation manual. It is essential to read and follow all the instructions and warnings in
the manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious
injury.