26
LP-542 REV. 7.16.15
4. Screen Installation
After connecting the intake air and exhaust vent pipes, it is required to install the
included screens into the exhaust vent and intake pipe terminations to prevent
damages to the unit due to blockages. Clean the vent terminations and cement
the screens into the terminations. See Figure 12 for installation detail.
Do not connect any other boiler vents to the boiler exhaust vent or intake
pipes.
PART 6 – INSTALL THE CONDENSATE DRAIN
1. Due to its efficient design, the boiler produces condensate (water) as a normal by-product. This
condensate is acidic, with a pH level between 3 and 4. This condensate must be drained away from the
boiler and disposed in accordance with all local regulations.
2. Use corrosion-resistant materials approved by the Authority Having Jurisdiction (AHJ) to drain
condensate. In the absence of an AHJ, the included flexible plastic hose, or field supplied ½” PVC and
CPVC drain pipe complying with ASTM D1785, F441, or D2665 may be used. Cement and primer must
comply with ASTM D2564 or F493. For Canadian applications, use CSA or ULC certified PVC or CPVC
pipe, fittings, and cement.
3. Local building codes may require an in-line neutralizer to be installed (not included) to treat the
condensate. Follow all the installation instructions included with the neutralizer. If a neutralizer is
installed, periodic replacement of the limestone (or neutralizing agent) will be required. The rate of
depletion of the limestone varies with usage of the boiler. During the first year of boiler operation, check
the neutralizer every few months for depletion.
4. Route the drain line to a nearby floor drain, laundry tub, or condensate pump.
NOTE: If a nearby laundry tub is used as a disposal for waste water from the washing machine, draining
the condensate into this tub allows the soapy water discharge to neutralize the acidic condensate.
5. An error will appear on the boiler display if condensate line is blocked. The boiler will not operate with a blocked condensate line. It is
extremely important to have this condition repaired by a qualified service technician.
NOTE: This boiler has an internal condensate trap that must be cleaned and maintained. See Maintenance section of this manual for
instructions on maintaining the trap.
Figure 13 – Internal
Condensate Trap
Figure 12 - Screen Installation
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