Raypak 850 Instructions d'exploitation télécharger pdf (Page 28)

Venting Installation Tips

Support piping:

• horizontal runs—at least every 5 ft (1.5m)

• vertical runs—use braces

• under or near elbows

Venting Configurations

For heaters connected to gas vents or chimneys, vent

installations shall be in accordance with the NFGC

(U.S.), or B149 (Canada), or applicable provisions of

local building codes.

Vertical Venting (Category IV)

Installation

The maximum and minimum venting length for this

Category IV appliance shall be determined per the

NFGC (U.S.) or B149 (Canada).

Table N: Category IV Vertical Vent & Vertical Direct Vent

Vent lengths are based on a lateral length of 2 ft. Refer to the latest edition of the NFGC for further details.

* Subtract 10 ft per elbow. Max. 4 elbows.

** Only Centrotherm polypropylene is approved for the XFyre product.

’ OR LESS

Fig. 22: Vertical Venting

Model No.

Certified Vent

Material

ent and

Intake Air

Vent Size

(in.)

Vertical Vent Height

(ft)

ombustion

Air Intake

Pipe

Material

Vertical Air

Inlet Max.

Length* (ft)

Min. Max.

300A

(Canada Only:

ULC-S636 PVC

and CPVC)

Stainless Steel,

AL29-4C,

ANSI/ASTM D1785

Sch 40 PVC,

ANSI/ASTM F441

Sch 40 CPVC

Polypropylene**

0 100

Galvanized

Steel,

PVC, ABS,

CPVC

100

400A

500A

700A

850A

CAUTION: This venting system requires the

installation of a condensate drain in the vent piping

per the vent manufacturer’s instructions. Failure to

install a condensate drain in the venting system will

void all warranties on this boiler. Condensate is

acidic and highly corrosive

NOTE: Ensure adequate clearances to allow annual

inspection of the venting system.

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Raypak 850 Instructions d'exploitation Page 28

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