Trane Official Blower Coil Manual for BCHC, BCVC, and Related Models

General Information

Blower Coil General Information

Blower coil units are draw-thru air handlers for cooling load conditions of 400–3000 cfm. Units are available in either horizontal (model BCHC) or vertical (model BCVC) configurations. Horizontal units are typically ceiling suspended via threaded rods. Knockouts are provided in all four corners to pass the rods through the unit. Horizontal units can also be floor mounted. Vertical units are typically floor mounted. They have a side inlet for easy duct connection, and do not require a field fabricated inlet plenum. Vertical units ship in two pieces and can be set up in either a pre-swirl or counter-swirl configuration.

Basic unit components consist of a water coil, condensate drain pan, filter, duct collars, one fan wheel, and motor with drive. See Figure 1. Drive components consist of sheaves, belt, and motor. The coil, drain pan, and motor/drive assembly can easily be field-converted from right hand to left hand configurations or vice versa.

Figure 1. Blower coil air handler unit components (model BCHC, horizontal unit)

	Main coil with copper
	tubes and enhanced
	aluminum fins in 2-, 4-,
Unit sizes 12, 18, 24, 36,	or 6-row hydronic or 3-,
54, 72, and 90 MBh	4-, or 6-row DX

Knockouts in all four	Galvanized steel
	cabinet in 14-, 18-, 22-,
corners for hanger rods
	and 28-inch heights

Internal filter frame accommodates 1- or 2-inch filters

Forward curved fan

Control options include control interface, Tracer™ ZN010, ZN510, or ZN520

1/3 to 3 hp motor with drive selections from 390 to 1611 rpm

Internal 1- or

2-row auxiliary coil in preheat or reheat position

Angle filter option and/or mixing box accommodates 2-inch filters

Main and auxiliary drain connections on same side of unit

Two, four, or six-row main coils are available for either hydronic cooling or heating. Three, four, or six-row direct expansion (DX) coils are also available for cooling. An optional one, two, four, or six- row heating coil is available factory-installed in either the preheat or reheat position. Also, a one- row preheat steam is available.

All units have an internal flat filter frame for one or two-inch filters. An optional angle filter box (two inch only), mixing box, bottom/top filter access box, or combination angle filter mixing box is available.

In addition, all units are available with either a basic or deluxe piping package option that includes a variety of control valve sizes in two or three-way configurations. The basic package consists of

BCXC-SVX01B-EN 9