Utica Boilers UB95M-200 Installationsanweisungen

Boilers for connection to gas vents or chimneys, vent 

installations shall be in accordance with “Venting of 

Equipment” of the National Fuel Gas Code, ANSI Z223.1/

NFPA 54, or “Venting Systems and Air Supply for 

Appliances”, of the Natural Gas and Propane Installation 

Code, CAN/CSA B149.1, or applicable provisions of local 

building codes. 

Provisions for combustion and ventilation air must be 

in accordance with section, Air For Combustion and 

Ventilation, of the National Fuel Gas Code, ANSI 2223.1/

NFPA54, National Gas and Propane Installation Code, CAN/

CGA-B 149.1, in absence of such requirements to the 

Authority having jurisdiction.

Boilers require dedicated direct vent system. All air for 

combustion is taken directly from outdoors through 

combustion air intake pipe. All flue products are discharged 

to outdoors through vent pipe.

See

 

Figures 5 and 6 for two pipe combustion air 

and vent pipe roof and sidewall termination. Roof 

termination is preferred. Combustion air and vent pipes 

must terminate together in same atmospheric pressure 

zone as shown. 

Use of concentric vent termination see Figures 7-9for 

proper setup.

For Canadian installations all plastic venting material 

must be listed to ULC S636.  

Construction through which vent and air intake pipes 

may be installed is maximum 24 inches, minimum ¼” 

thickness.

See Table 5 for combustion air and vent pipe fittings 

approved material and standards.

Canada construct all combustion air and vent pipes 

for this unit of ULC S636 listed schedule-40 CPVC, 

schedule-40 PVC, PVC-DWV or ABS-DWV pipe and pipe 

cement. SDR pipe is not approved in Canada. 

• First 3 feet (900mm) of venting must be readily 

available for visual inspection. 

• Specified primers and glues of certified vent 

system must be from single manufacturer, and not 

intermixed with other manufacturer’s vent system 

parts.  

• Components of the certified system must not be 

interchanged with other vent systems, or unlisted pipe 

and/or fittings.

Transition from 2” pipe to 3” pipe must be made in 

vertical run.

Boiler combustion air and vent pipe connections are 2” 

but must increase to 3”. Due to potential for flue gas 

temperatures above 155°F, first 30” of supplied vent 

pipe is CPVC while remaining vent pipe can be PVC. Any 

replacement of first 30” of vent pipe must be made with 

CPVC.   

Covering non-metallic vent pipe and fittings with thermal 

insulation shall be prohibited.

                                                    

TABLE 4

Maximum Allowable Temperatures 

Of Typical Non-Metallic Vent Material

Material

HDT

RTI 

Standard

°F

°C

°F

°C

PVC

158 

70

–

–

ASTM F 891 *
ASTM D2665 **
ASTM D1785 **
ASTM D2241 **

CPVC

210

100

–

–

ASTM D2846 **
ASTM F441 **
ASTM F442 **

ABS

180

82

–

–

ASTM D2661 ***
ASTM F628 ***

*  

 Allowable temperatures based on Classifications   covered in ASTM 

D4396 [Deflection Temperatures under Load (264psi) (1819 KPa)].

**  Allowable temperatures based on Classifications   covered in ASTM 

D1784 [Deflection Temperatures under Load (264psi) (1819 KPa)].

*** Allowable temperatures based on Classifications covered in ASTM 

D3965 [Deflection Temperatures under Load (264psi) (1819 KPa)].

Length of pipe is counted from end of supplied 2” CPVC 

pipe exiting boiler. Termination is not counted in “Total 

Equipment Length.”

Item

Material 

Standards

Vent Pipe 

and Fittings

PVC schedule 40

ANSI/ASTM D1785

PVC - DWV

ANSI/ASTM D2665

CPVC schedule 40

ANSI/ASTM D1784/

F441

SDR-21 & SDR-26 PVC

ANSI/ASTM D2241

ABS-DWV

ANSI/ASTM D2661

Schedule 40ABS

ANSI/ASTM F628

PP (Polypropylene)

Pipe and  Components

UL 1738

ULC S636-08

Pipe 

Cement/

Primer

PVC 

ANSI/ASTM D2564

CPVC

ANSI/ASTM F493

Schedule 40 ABS

ANSI/ASTM D2235

• IPEX is approved vent manufacturer in Canada listed 

to  ULC-S636.

• IPEX System 636 Cements and Primers are approved 

in Canada listed to ULC-S636.

Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel

® 

,

(Polyphenolsulfone) in venting systems shall be prohibited.

Use of cellular core PVC for venting flue gas could 

result in death, or serious injury.