Alpine Installation, Operating, and Service Instructions

103448-10 - 6/18 31
IV. Venting B. CPVC/PVC Venting (continued)
1. Components
a. See Table 7A for CPVC/PVC vent and combustion air components included with boiler.
b. See Table 7B for CPVC/PVC installer provided vent and combustion air components required for optional
horizontal snorkel terminals shown in Figure 6B.
c. See Table 7C for CPVC/PVC installer provided vent and combustion air components required for optional
vertical roof terminals shown in Figures 7A and 8.
d. See Table 7D for installer provided components required for optional IPEX low profile horizontal termination
shown in Figures 6D and 6E.
e. See Table 7E for installer provided components required for optional DiversiTech (HVENT) low profile
horizontal termination shown in Figures 6D and 6F.
f. See Table 7F for installer provided components required for optional IPEX FGV concentric horizontal or
vertical terminations shown in Figures 6G, 7B and 7C.
g. See Table 7G for installer provided components required for optional DiversiTech (CVENT) concentric
horizontal or vertical terminations shown in Figures 6G, 7B and 7C.
2. Field Installation of CPVC/PVC Two-Pipe Vent System Connector
Refer to Figure 9 and following steps:
a. Position the CPVC/PVC vent connector and gasket onto boiler rear panel and insert vent connector inner
stainless steel vent pipe into heat exchanger vent outlet.
b. Align vent connector plate and gasket clearance holes with rear panel engagement holes. Then, secure
the connector and gasket to the panel with six mounting screws.
c. Attach flue temperature sensor wiring harness (taped to boiler rear panel) female connectors to the sensor
male spade terminals. Failure to do so will prevent boiler from starting and boiler display will flash Red and
display Limit String Fault (see Section XII “Troubleshooting” for details).
NOTICE Flue temperature sensor harness must be connected to flue temperature sensor for the
boiler to start-up and operate properly. The installation is not complete unless the harness and the
sensor are interconnected
3. Near-Boiler Vent/Combustion Air Piping
Refer to Figure 10A and the following Steps:
a. Models ALP150BF thru ALP210BF (floor mounted) and ALP285B only:
Apply supplied dielectric grease (grease pouch attached to two-pipe vent connector) to gasket inside vent
section of 3 in. x 3 in. or 4 in. x 4 in. two-pipe vent connector. The grease will prevent gasket rupture when
inserting vent pipe and gasket deterioration due to condensate exposure.
b. Install provided Schedule 40 x 30 in. (760 mm) long CPVC pipe into the vent section of the connector with
a slight twisting motion and secure by tightening the worm band clamp screw.
c. All CPVC vent components supplied with boiler inside vent carton [Schedule 40 x 30 in. (760 mm) long
CPVC pipe and Schedule 80 CPVC 90° Elbow] must be used for near-boiler piping before transitioning to
Schedule 40 PVC (ASTM 2665) pipe components for remainder of vent system. The 30 in. (760 mm) long
CPVC straight pipe may be cut to accommodate desired vent configuration provided both pieces are used
in conjunction with CPVC 90° Elbow before any PVC components are used. Ensure that the CPVC 90°
Elbow is the first elbow used in the vent system as it exits the boiler.
d. Insert Schedule 40 PVC combustion air pipe (installer provided) into the combustion air section of the
connector with a slight twisting motion and secure by tightening the worm band clamp screw.
e. Clean all vent and combustion air pipe joints with primer and secure with transition cement. Follow
application instructions provided on primer and cement bottles.
4. Field Installation of CPVC Vent Pipe - Wall Mounted Boiler Builds
a. The wall mounted boiler builds do not require using 3 in. Schedule 80 CPVC 90° elbow for near-boiler vent
piping. Refer to Figure 10B and the following Steps:
b. Apply supplied dielectric grease (grease pouch attached to 90° vent elbow outlet inside air box) to
gasket inside vent elbow. The grease will prevent gasket rupture when inserting vent pipe and gasket
deterioration due to condensate exposure.