Alternate Condensate Drain Piping Installation Using Pvc Or Cpvc - Napoleon 9700 SERIES Installation And Operating Instructions Manual

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IMPORTANT:
THE CONDENSATE DRAIN TRAP ASSEMBLY SHOULD BE FULL OF WATER (PRIMED)
BEFORE STARTING THE FURNACE. TO FILL THE CONDENSATE DRAIN TRAP ASSEMBLY,
TEMPORARILY REMOVE THE VENT DRAIN HOSE FROM THE EXHAUSTER ASSEMBLY
ELBOW/DRAIN FITTING, AND POUR APPROXIMATELY ONE CUP OF WATER DOWN THE
HOSE. WATER WILL BEGIN RUNNING OUT THE CONDENSATE DRAIN TRAP OUTLET
WHEN IT IS FULL. REFASTEN THE VENT DRAIN HOSE TO THE EXHAUSTER ASSEMBLY
ELBOW/DRAIN FITTING.
THE CONDENSATE DRAINAGE CONFIGURATION REQUIRES A VENT. IT TAKES LESS
THAN A ONE INCH RISE ANYWHERE ALONG THE HORIZONTAL ROUTE OF THE DRAIN
TUBE TO CREATE A VAPOR LOCK, WHICH WILL PREVENT CONDENSATE FROM
DRAINING AWAY FREELY, AND RESULT IN ERRATIC FURNACE OPERATION.
A typical confi guration would be to cement the side branch of a ½" CPVC tee to the drain trap assembly
outlet, with the end branches oriented vertically. (Figure 27)
A 1" piece of ½" CPVC pipe cemented to the upper end branch will serve as a vent, which will prevent the
creation of a vapor lock, and serve as an overfl ow in the event that the drain line becomes blocked. A similarly
sized piece of pipe cemented to the lower end branch will permit connection to the condensate outlet with
⅝" id / ⅞" OD fl exible tubing, or the condensate may be piped entirely in CPVC to the fl oor drain/sump/
condensate pump.
NOTE
It is recommended that the condensate drain assembly not be cemented to the condensate trap
outlet, if removal of the condensate trap is required in the future. Use a piece of the provided 1/2"
drain hose if removal of the condensate trap is anticipated.
11.1.2
USING PVC OR CPVC
The supplied parts bag includes a length of ½" and 5/8" rubber hose and the condensate trap. Install the
condensate trap according to instructions included in the IOM.
FIGURE 17
If installing with ½" PVC, use the ½" hose. If installing with ¾" CPVC, use the 5/8" hose. Slide the appropriate
hose over the condensate trap outlet and cut it fl ush with the end of the outlet. The remaining rubber should be
fl ush with the end of the outlet on the condensate trap. The remaining hose is suffi cient length to accommodate
all furnace orientations.
W415-1064 / 11.11.11
ALTERNATE CONDENSATE DRAIN PIPING INSTALLATION
FIGURE 18