Bryant 340MAV Concentric Vent/Air Termination Kit, IV. Multiventing and Vent Terminations

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.

Roof terminationsÐLoosely install pipe coupling on prop- erly cut vent pipe. Coupling must be positioned so bracket will mount as shown in Fig. 30.

For applications using combustion-air pipe option, indi- cated by dashed lines in Fig. 30, install 90° street elbow into 90° elbow, making U-fitting. A 180° U-fitting may be used.

Sidewall terminationsÐInstall bracket as shown in Fig. 33 or 34.

For applications using vent pipe option indicated by dashed lines in Fig. 33, rotate vent elbow 90° from position shown in Fig. 33.

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

5.Check required dimensions as shown in Fig. 30, 33, or 34.

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 that may allow recirculation of flue gases, airborne leaves, or light snow.

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.

NOTE: Do not allow insulation or other materials to accumulate inside of pipe assembly when installing it through hole.

Roof terminationsÐLocate assembly through roof to ap- propriate height as shown in Fig. 31.

Sidewall terminationsÐLocate assembly through sidewall with rain shield positioned no more than 1-in. from wall as shown in Fig. 32.

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

6.Check required dimensions as shown in Fig. 31 or 32.

IV. MULTIVENTING AND VENT TERMINATIONS

When 2 or more 340MAV Furnaces are vented near each other, each furnace must be individually vented. NEVER common vent or breach vent 340MAV furnaces. When 2 or more 340MAV furnaces are vented near each other, 2 vent terminations may be installed as shown in Fig. 35, 36, 37, 38, or 39, but next vent

Ð29Ð

termination must be at least 36 in. away from first 2 terminations. It is important that vent terminations be made as shown to avoid recirculation of flue gases. Dimension "A" in Fig. 35, 36, 37, 38, and 39 represents distance between pipes or rain shields, as touching or 2-in. maximum separation.

CONDENSATE DRAIN

I.GENERAL

Condensate trap is shipped installed in the blower shelf and factory connected for UPFLOW applications. Condensate trap must be RELOCATED for use in DOWNFLOW and HORIZONTAL applications.

Condensate trap MUST be used for all applications.

An external trap is not required when connecting the field drain to this condensate trap.

The field drain connection (condensate trap or drain tube coupling) is sized for 1/2-in. CPVC, 1/2-in. PVC, or 5/8-in. ID tube connection.

Drain pipe and fittings must conform to ANSI standards and ASTM D1785 or D2846. CPVC or PVC cement and primer must conform to ASTM D2564 or F493. In Canada, use CSA or ULC certified schedule 40 CPVC or PVC drain pipe, fittings, and cement.

When a condensate pump is required, select a pump which is approved for condensing furnace applications. To avoid conden- sate spillage, select a pump with an overflow switch.

32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

A93058

CAUTION: Unit must not be installed, operated, and then turned off and left in an unoccupied structure during cold weather when temperature drops to 32°F and below unless drain trap and drain line have adequate freeze protection. See Service and Maintenance Instructions for winterizing procedure.

Furnace condensate is mildly acidic, typically in the pH range of

3.2to 4.5. Due to corrosive nature of this condensate, a condensate pH neutralizing filter may be desired. Check with local authorities to determine if a pH neutralizer is required.

II.APPLICATION

The furnace, A/C, and humidifier drains may be combined and drained together. The A/C drain must have an external, field- supplied trap prior to the furnace drain connection. All drain connections (furnace, A/C, or humidifier) must be terminated into an open or vented drain as close to the respective equipment as possible to prevent siphoning of the equipment's drain.