Bryant 355M-40-4, 355M-40-5 Extended Exposed Sidewall Pipes, Two-Pipe Termination Kit

TABLE 7ÐMAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH INSULATION IN WINTER DESIGN

TEMPERATURE AMBIENT*

UNIT	WINTER DESIGN	MAXIMUM PIPE		INSULATION THICKNESS (IN.)²
	TEMPERATURE	DIAMETER
SIZE			0	3/8	1/2	3/4	1
	(°F)	(IN.)
	20	2	21	37	42	50	57
042040
	0	2	10	22	25	30	35
	-20	2	5	14	17	21	25
	20	2	30	55	61	70	70
042060
	0	2	16	33	38	46	53
	-20	2	9	23	26	33	38
042080	20	2	37	65	70	70	70
	0	2	20	39	45	55	63
060080
	-20	2	11	27	31	39	45
	20	2-1/2	41	70	70	70	70
060100	0	2-1/2	21	42	48	59	68
	-20	2-1/2	11	28	33	41	49
	20	3	49	70	70	70	70
060120	0	3	26	51	58	70	70
	-20	3	15	35	40	50	59

*Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length as specified in Table 6.

² Insulation thickness based on R value of 3.5 per in.

contaminants, and has less visible vent vapors. (See Fig. 31 or 32.) Sidewall termination may require sealing or shielding of building surfaces with a corrosive resistance material due to corrosive combustion products of vent system.

A.Extended Exposed Sidewall Pipes

Sidewall combustion-air and vent pipe terminations may be extended beyond area shown in Fig. 34 or 35 in outside ambient by insulating pipes as indicated in Table 7.

1.Determine combustion-air and vent pipe diameters, as stated above, using total pipe length and number of elbows.

2.Using winter design temperature (used in load calculations), find appropriate temperature for your application and fur- nace model.

3.Determine required insulation thickness for exposed pipe lengths.

NOTE: Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces cannot exceed total allowable pipe length as specified in Table 6.

B.Two-Pipe Termination Kit

1.Determine location for termination.

Consideration of the following should be made when determining an appropriate location for termination kit.

a.Comply with all clearance requirements as stated in Table 5.

b.Termination kit should be positioned where vent vapors will not damage plants/shrubs or air conditioning equip- ment.

c.Termination kit should be positioned so it will not be affected by wind eddy (such as inside building corners) or accumulation of airborne leaves or light snow, or allow recirculation of flue gases.

d.Termination kit should be positioned where it will not be damaged by or subjected to foreign objects, such as stones, balls, etc.

e.Termination kit should be positioned where vent vapors are not objectionable.

2.Cut 2 holes, 1 for each pipe, of appropriate size for pipe size being used.

3.Loosely install elbow in bracket and place assembly on combustion-air pipe.

Ð28Ð

Roof terminationsÐLoosely install pipe coupling on prop- erly cut vent pipe. Coupling must be positioned so bracket will mount as shown in Fig. 31.

For applications using combustion-air pipe option indicated by dashed lines in Fig. 31, install 90° street elbow into 90° elbow, making U-fitting. A 180° U-fitting may be used.

Sidewall terminationsÐInstall bracket as shown in Fig. 34 or 35.

For applications using vent pipe option indicated by dashed lines in Fig. 34, rotate vent elbow 90° from position shown in Fig. 34.

4.Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping.

5.Check required dimensions as shown in Fig. 31, 34, or 35.

C.Concentric Vent/Air Termination Kit

1.Determine location for termination.

Consideration of the following should be made when determining an appropriate location for termination kit.

a.Comply with all clearance requirements as stated in Table 5.

b.Termination kit should be positioned where vent vapors will not damage plants/shrubs or air conditioning equip- ment.

c.Termination kit should be positioned so it will not be affected by wind eddy (such as inside building corners) or accumulation of airborne leaves or light snow, or allow recirculation of flue gases.

d.Termination kit should be positioned where it will not be damaged by or subjected to foreign objects, such as stones, balls, etc.

e.Termination kit should be positioned where vent vapors are not objectionable.

2.Cut one 4-in. diameter hole for 2-in. kit, or one 5-in. diameter hole for 3-in. kit.

3.Loosely assemble concentric vent/air termination compo- nents together using instructions in kit.

4.Slide assembled kit with rain shield REMOVED through hole.