Polaris PC 130-34 2NV Benutzerhandbuch

8

Combustion Air Inlet Piping; The following plastic 

materials may be used for combustion air inlet piping. 

IMPORTANT: Follow all local codes or, in the absence 

of local codes, CSA B149.1, Natural Gas and Propane 

Installation Code - current edition to properly install air inlet 

piping.
 

•  Schedule 40 PVC

 

•  Schedule 40 or 80 CPVC

 

•  DWV Pipe and Foam Core Piping is

 

  acceptable as intake pipe only.

Exhaust Piping; Exhaust PVC or CPVC plastic piping 

shall be certified and marked as complying to Standard 

for Type BH Gas Venting System ULC-S636. In addition 

plastic piping, plastic components, primers, and glues must 

be from a single source manufacturer and not mixed with 

other listed or unlisted systems. IMPORTANT: Follow all 

local codes or, in the absence of local codes, CSA B149.1, 

Natural Gas and Propane Installation Code - current 

edition to properly install exhaust piping.
Important: Do not use vent elbows in this vent pipe instal-

lation (see figure 5 below).

The following guidelines should be followed when installing 

the air inlet and exhaust outlet piping:
• 

Venting should be as direct as possible with a minimum 

number of pipe fittings.

• 

Vent diameter must not be reduced unless specifically   

noted in the installation instructions.

• 

All 2” horizontal vent piping must be sloped upward  

1/4 inch per foot (21 mm per meter); (3” Piping must 

slope upward at 1/8” per  foot) (10.5 mm per meter). 

This will allow condensate to run back to the heater  

and exit through the condensate trap.

• 

Support all horizontal pipe runs every four feet (1.2 m) 

and all vertical pipe runs every six feet (1.8 m) or       

according to local codes. 

• 

Vents run through unconditioned spaces where below  

freezing temperatures are expected should be  properly 

insulated to prevent freezing.  For horizontal runs, wrap 

the vent pipe with nationally recognized/listed heat tape 

and/or approved insulation for freeze protection. Install 

per the manufacturer’s instructions.

• 

An air intake filter is included with the unit and must be  

 

installed according to the installation instructions 

 

supplied with the filter.

The combustion air inlet and exhaust outlet piping and 

termination may be installed in one of the following type 

terminations:
 

1.   Standard Horizontal (2 Pipe) 

 

2.   Alternate Horizontal (2 Pipe)

 

3.   Vertical (2 Pipe) 

 

4.    Concentric Vent - Through the Wall

 

5.    Concentric Vent - Through the Roof

All pipe, fittings, pipe cement, primers and procedures 

must conform to American National Standard Institute and 

American Society for Testing and Materials (ANSI/ASTM) 

standards in the United States. This water heater has been 

design certified by the Canadian Standards Association for 

use with the specified (CSA) listed plastic vent pipe. 
All joints in the inlet and outlet piping must be properly 

cemented. Size and cut all piping before cementing.
1.   Cut the pipe end square and remove all ragged edges 

and burrs.  Make sure the inside of the pipe is clean 

and free of cuttings and loose dirt.  Chamfer the end 

and apply primer to the fitting and pipe.  

2.    Using a suitable grade of pipe cement, apply a moder-

ate, even coat inside the fitting.  Apply a liberal amount 

of cement to the outside of the pipe to socket depth. 

Note: It is important to select the proper pipe cement for 

the type of plastic pipe being used.
3.   Assemble the parts quickly while the cement is             

still wet. Twist the pipe 1/4 turn during insertion                   

and hold for 30 seconds.

Size the exhaust outlet and combustion air inlet pipes as 

specified in Table 1. This table lists the maximum allow-

able length in feet of the exhaust outlet and combustion air 

inlet pipes as related to the number of required elbows and 

the termination. The specified maximum lengths are for 

the separate inlet and exhaust pipe systems and not the 

combined length of both systems. Minimum pipe length is 

6 feet (1.8 m) with one elbow per side.
1.   Determine termination type and pipe size.

2.   Determine number of elbows in exhaust pipe. Do not 

include the elbows in the termination or the condensate 

trap.  Corresponding number Indicates the maximum 

length of exhaust pipe.

3.   Determine number of elbows in inlet pipe.  Do not  

include the elbows in the termination.  The correspond-

ing number indicates the maximum length of inlet pipe.

Maximim allowable Length in Feet (Meters) of Exhaust and Air Inlet Pipe

For Schedule 40 CPVC, OR PVC Pipe and Fittings

Minimum length is 6 feet (1.8 m) per pipe with 1 elbow per side.

2 Inch pipe may be used with 100,000, 130,000 & 150,000 

BTU/HR (29.3, 38, & 43.9 kW) input models only.