HHP PBNU-LD12P100 Інструкція з монтажу Посібник з монтажу - Сторінка 8

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Once the pip' i ng size is deter mined, the combustion air intak e

collar must be connected to that size piping. Units rated from

40 MBH input

MBH output) to 80 MBH input (76 MBH

(38

output) are equipped with intake collars which accommodate

diameter piping. The 100 MBH input

2·

through 144 MBH in put (133 MBH output) units have collar s for

3·

diam eter piping. When the pipe size listed in the table is

different than the size of the intake collar provided with the unit,

transition should be made as illustrated in Figure 3.

UNITS WITH

80 MEJH INPUT (76 OUT)

FlGURE 3 -COMBUSTION AI R PIPING ADAP TATION

VENT PIPE CONNECTIONS

All models are provided with a combustion blower elbow which

accommodates 2" diameter vent pipe. This elbow may be

positioned for right or left exit from the unit as required for the

installation conditions.

With reference to the p1p1ng s1z1ng table, where units are

installed with a vent pipe of a different diameter than the

exhaust elbow, reduction or expansion fittings must be incor

porated by the installer at the time of installation. Examples of

such adaptation are shown in Figure 4.

UNITS WITH

80- 160 MBH INPVT

(76-152 OUTPUD

(E•cep! 100 lnput/ilS OvtpvQ 3·X2· dia.

REDUCING

BUSH IN

T PIPING ADAPTATION

VEN

FlGURE 4-

PIPING ASSEMBLY

The final assembly procedure for the vent/combustion air pip

ing is as follows:

1. Cut piping to the · p roper length, beginning at the furnace.

2. Deburr the piping inside and outside.

3. Chamfer the outer edges of th€ piping.

4. Dry-fit the entire vent/combustion air piping assembly.

5. Disassemble the pipi

cement per the cement manuf?-cturer's instructions.

Unitary Products Group

MBH ou tput)

(95

U'IITS WITH

100 MSH INPUT {95 Oun

and apply cement primer and

Primer and cement must conform to ASTM

PVC, or AS TM

02235

WARNING: Solvent cements are flammable and mus t be usee.

in wel!-ventilq,ted areas only. Keep them away from hear

sparks and opea flames (including pilots}. Do not breatht

vapors and avoid contact with skin and eyes.

6. All joints must be made to provide a permanent, air-tight

water-tight seal. The only exception to this means o

joining is where the street elbow is joined to the vente

assembly. This joint should be ma· d e with RTV sealant. 1

slainless steel screw should be used in the hole in th,

venter housing to keep the street elbo· w in proper align

ment. If the street elbow is changed for a left side exit, th

stainless steel screw mu.st be reused in the new locatior

If the elbow/drain is used for right side exit. carefull

remove the plastic cap which is factory installed on th

lower left drain connection (see Figure

tubing and clamp from the lower right drain connection t

the lower left drain connection. Place the plastic cap ont

the lower right drain connection.

NOT£: The upper drain connections are not used in upflo

installations and are internally sealed.

FACTORY

CAPPED

SIDE

FIGURE 5- DRAIN CAP LOCATION

Drain tubing from the drain fitting must be routed to prevE

kinks and low spots. This tubing may have to be cut a

shortened when the flue piping is routed out of the left side

the furnace.

7. Support the combustion air and vent piping such that it

angled 1/4" per linear foot upward from the furnace. Pi pi

should be supported with pipe hangers to prevent saggir

Maximum spacing betWeen hangers is five

SDR-PVC piping, where maximum spacing is three

feet.

8. The vent piping must be installed so as to prevent acr

mulation of condensate and where necessary, ha

means provided for drainage of condensate.

Seal around the openings where the combustion air

vent piping pass through the roof of side wall.

CAUTION: Vent piping must be insulated with 112' Armat

insulation if it will be subjected to freezing temperatu

such as routing through unheated areas or through

unused chimney.

The combustion air piping must be insulated with

Armaflex insulation if it is installed above a suspe nded ceil

or in a warm, humid space such as a laundry room to prev

possible condensation from forming on the outside of the pi

o::;o.65-l'-;2

02564

for ABS piping.

5).

Move the drai

(5)

feet, excf

1/2"

fo: