Empire Heating Systems PVS18N-3, Owner'S Manual And Installation Instructions

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VENTING REQUIREMENTS

WALL FURNACE INSTALLATION

WARNING

This appliance must not be vented with any other applianc

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es, even if that appliance is of the condensing type. Com

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mon venting can result in severe corrosion of other appli

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ances or their venting and can allow combustion gases to 

escape through such appliances or vents. Do not vent the 

wall furnace into a fireplace chimney or building chase. The 

flue exhaust pipe must be vented outside.

WARNING

Upon completion of the installation, carefully inspect the en

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tire flue system to ensure it is properly sealed. DO NOT use 

any vent material other than what is specified in this manual. 

Leaks in the flue system can result in serious personal injury 

or death due to exposure of flue products, including carbon 

monoxide. 

The UltraSaver is classified as a “Category IV” appliance, which 

requires special venting materials and installation procedures. 

Installations can be Conventional (one-pipe) and Direct Vent  

(two-pipe). Venting must be completed with 1-1/2 or 2 inch diam-

eter pipe. In selecting a location for installation, it is necessary to 

provide adequate clearances for servicing and proper installation. 

All vent and combustion air pipes and fittings must be Schedule 

40 PVC, ULC S636 and meet the ANSI/ASTM Standard D1785. 

Cement must conform to ASTM Standard D2564. 

Installation in Canada must conform to the requirements of CSA 

B149 code. Vent systems must be composed of pipe, fittings, 

cements, and primers listed to ULC S636. In Canada, the primer 

and cement must be of the same manufacturer as the vent 

system; do not mix primers and cements from one manufacturer 

with a vent system from a different manufacturer. Follow the 

manufacturer’s instructions the use of primer and cement and 

never use primer or cement beyond its expiration date.

The safe operation, as defined by ULC S636, of the vent system 

is based on following these installation instructions, the vent 

system manufacturer’s installation instructions, and proper use 

of primer and cement. Acceptability under Canadian standard 

CSA B149 is dependent upon full compliance with all installation 

instructions. Under this standard, it is recommended that the vent 

system be checked once a year by qualified service personnel. 

The authority having jurisdiction (gas inspection authority, 

municipal building department, fire department, etc) should be 

consulted before installation to determine the need to obtain a 

permit.

The maximum vent length is 40 feet equivalent with (3) 90° 

elbows.

The minimum vent length is 12 inches. 

Each 90° 

elbow used in the vent system will be the equivalent to 3 feet, 

and each 45° elbow is equivalent to 1.5 feet, which should be 

added to the overall vent length.

1.  The installation must conform with, as applicable:

A.  A non-metallic venting system for use in Canada shall 

be listed to the Standard for Type BH Gas Venting 

Systems, ULC S636.

B.  A maintenance schedule, when a means is provided to 

neutralize condensate, if required.

C.  Periodic cleaning of the condensate collection and 

disposal system(s), if required.

D.  For Category IV appliances:

(1)  When the manufacturer supplies the venting 

system, the instructions shall include a parts list 

and instructions covering the installation of properly 

identified parts to provide for the venting of the vent 

gases to the outdoors.

(2)  When the parts for venting the vent gases are not 

provided by the manufacturer and they are specific 

types listed by a nationally recognized testing 

agency, these instructions shall clearly identify and 

specify the use of the specific parts.

2.  For Category IV appliances, the venting system shall be 

installed in accordance with the appliance manufacturer’s 

instructions.

3.  Instructions for proper venting installation:

A.  Horizontal portions of the venting system shall:

(1)  Be supported to prevent sagging. The methods of 

and intervals for supports shall be specified in the 

installation manuals.

(2)  Slope upwards not less than 1/4 in/ft (21 mm/m) 

from the appliance to the vent terminal.

(3)  Category IV appliances shall be installed so as to 

prevent accumulation of condensate in the venting 

system.

4.  Category IV appliance installations shall provide a means for 

removal of condensate.

5.  For appliance installation instructions accompanying a direct 

vent appliance or other appliance that can utilize a side wall 

vent system shall include information on where the vent 

terminal can and cannot terminate, including:

For Category IV appliances, the following statement:

The vent for this appliance shall not terminate:

(a)  Over public walkways; or

(b)  Near soffit vents or crawl space vents or other 

areas where condensate or vapor could create a 

nuisance or hazard or cause property damage; or

(c)  Where condensate vapor could cause damage or 

could be detrimental to the operation of regulators, 

relief valves, or other equipment.

6.  Non-metallic venting systems shall not interchange 

components with another listed or unlisted metallic or 

nonmetallic vent systems.

Attention: Check local codes for venting requirements.

NOTE:

   IPEX System 636 Flue Gas Venting Adaptor is provided. 

Installer to check for adhesive material requirements.

Empire approved poly pipe with gasketed joints may also be used. 

Contact your Empire dealer for availability. The use of vent tubes 

not approved by the manufacturer may result in unsatisfactory per-

formance.