Lennox Cb-19-21, Cb19-26, Cb19-31, Cb19-41, Cb19-51 Specification Data

...

ENGINEERING DATA



COILS – BLOWER COIL UNITS

CB19 AND CBH19 SERIES

UP-FLOW, DOWN-FLOW AND HORIZONTAL

BLOWER COIL UNITS

*12,600 to 65,500 Btuh (3.7 to 19.2 kW) Cooling Capacity

11,500 to 60,000 Btuh (3.4 to 17.6 kW) Heat Pump Heating Capacity

6,400 to 102,400 Btuh (1.9 to 30.0 kW) Optional Electric Heat

*ARI Standard 210/240 Ratings With Matching Outdoor Unit

CB19/

CBH19

Bulletin #210056

January 1995

Supersedes

April 1994

Applications —

signed for multi-position installation in a basement, utility room, alcove, closet, crawlspace or attic. Units are applicable to expansion valve systems in cooling applications and check and expansion valve systems in heat pump applications. Units have factory installed check and expansion valve. Several models are available in varying sizes with a wide range of cooling and heating capacities. See Condensing Unit bulletins in section Cooling Units — Condensing Units for cooling capacities. See Heat Pump Outdoor Unit Bulletins in section Heat Pumps — Matched Remote Systems for cooling and heating capacities. Optional field installed electric heaters are available in several sizes for additive heating capacity.

CB19 models are applicable to up-flow or down-flow discharge air applications. Units are shipped for up-flow applications and may easily be field converted to the downflow position by turning the unit upside down and repositioning the coil, drip shields and cabinet access panel. Filters are not furnished and must be provided by the installer. An optional side return air adapter with filter(s) is available for up-flow applications only. An optional additive base is available for models with electric heat installed in the down-flow position on combustible floors.

CBH19 models are designed for horizontal discharge air applications. Units are furnished with left hand air discharge as standard and may be field changed to right hand discharge by turning the unit over (end for end) and repositioning the coil. CBH19-51 and CBH19-65 models are furnished in a two piece cabinet with blower and optional electric heaters in one section and the indoor coil in the other. Hardware is furnished for field connection of cabinets. Filters are not furnished and must be provided by the installer.

The CB19 and CBH19 blower coil units are de-

CB19 MODEL — UP-FLO CB19 MODEL — DOWN-FLO

CBH19 MODEL — HORIZONTAL

Typical Applications

Horizontal Installation

Up-Flow Installation

with optional electronic air cleaner

The maple leaf symbol in this bulletin denotes Canadian only usage where applicable

NOTE — Due to Lennox’ ongoing committment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability.

Down-Flow Installation

1995 Lennox Industries Inc.

FEATURES

Completely Tested —

ing condensing units in the Lennox Research Laboratory environmental test room in accordance with ARI Standard 210/240-89. Optional electric heaters are rated in accordance with U.S. Department of Energy (DOE) test procedures and Federal Trade Commission (FTC) labeling regulations. Blower performance data is according to actual unit tests conducted in Lennox air test chamber. Blower-coil units and components within are bonded for grounding to meet safety standards for servicing required by U.L., C.S.A., CEC and NEC.

Cabinet —

completely insulated with thick fiberglass insulation. The prepainted steel cabinets have a finish of mildly textured enamel with a primer coat on the unpainted side of all panels. Removable panels provide complete service access. Electrical inlets are provided in both sides of cabinet. Return air entry is possible in either side or bottom of cabinet on up-flow units.

Drain Pan —

pipe drains extended outside of cabinet for ease of connection. See dimension drawings.

Constructed of heavy gauge galvanized steel and

Deep, corrosion resistant drain pan has dual

Direct Drive Blower —

built direct drive blower. Each blower is statically and dynamically balanced as an assembly before it is installed in the unit. Multi-speed motor is resiliently mounted. A choice of blower speeds is available. See blower performance tables. Change of blower speeds is easily accomplished by a simple change in wiring.

Refrigerant Line Connections —

lines have sweat connections and extend outside of the cabinet for ease of connection. See dimension drawings for locations.

Check and Expansion Valve Furnished —

sion valve furnished and factory installed on all models.

Copper Tube/Enhanced Fin Evaporator Coil —

signed twin coils, assembled in a ‘V’ configuration, provides extra large surface and contact area, excellent heat transfer and low air resistance for maximum efficiency. Precise circuiting gives uniform refrigerant distribution. Lennox fabricated coil is constructed of precisely spaced ripple-edged aluminum fins fitted to durable seamless copper tubes. Fins are strengthened to resist bending and are equipped with collars that grip tubing for maximum contact area. Lanced fins provide maximum exposure of fin surface to air stream. Flared shoulder tubing joints and silver soldering provide tight, leakproof joints. Long life copper tubing is easy to field service. Coil is thoroughly factory tested under high pressure to insure leakproof construction.

Transformer and Blower Cooling Relay —

former and blower cooling relay are furnished as standard equipment and are factory installed in the unit control box. A terminal strip is also furnished as standard.

Blower coil units are tested with match-

Equipped with a Lennox designed and

Suction (vapor) and liquid

Check and expan-

Lennox de-

A 24 volt trans-

OPTIONAL ACCESSORIES (Must Be Ordered Extra)

Electric Heat (Optional) —

internal to the unit cabinet and are available in several kw sizes, see Electric Heat table. The helix wound nichrome bare heating elements are exposed directly in the air stream resulting in instant heat transfer, low element temperatures and long service life. Each heating element is equipped with accurately located limit control with fixed temperature off setting and automatic reset. In addition, elements have supplemental thermal cutoff safety fuses providing positive protection in case of excessive temperatures. Cutoff fuses are mounted external to the element face plate for quick and easy replacement. Thermal sequencer relay brings the heating elements on and off line, in sequence and equal increments, with a time delay between each element. Sequencer also initiates and terminates blower operation. Heating control relay(s), is furnished as standard. Control box and access cover are constructed of heavy gauge galvanized steel. Heaters are factory assembled with controls installed and wired and only require plug-in field connection.

Additive electric heaters field install

Circuit Breakers —

(208/240v-1ph) and ECB19-15,-20 and -25 kw (208/240v-3ph) electric heaters are equipped with circuit breakers to provide overload and short circuit protection. Breakers are factory wired and mounted on electric heat unit. Circuit breakers are current sensitive and temperature actuated to shut off heater if current draw is excessive. Must be reset manually. Circuit breakers qualify as the disconnect means at unit in many areas and eliminate the need for a field provided disconnect. Consult local electrical code in your area.

ECB19-12.5,-15,-20,-25 and -30 kw

Single-Point Power Source Control Box (Optional) —

Box (21H39) may be used with optional electric heat when two or three circuits (if required by code) are specified. Field installs external to the unit cabinet on either side or top. Provides single power service connection to the unit. Constructed of heavy gauge steel with baked enamel finish, prepunched mounting holes, electrical inlet knockouts, and terminal strip. Removeable cover provides easy access. Box is 7” x 7” x 4” deep (178mm x 178mm x 102mm), shipping weight is 5 lbs. (2 kg.)

CCB1 EfficiencyPlus Humidity Control (Optional) —

CCB1 Humidity Control (35H00) is an electronic control which installs next to the room thermostat and allows the selection of the desired indoor humidity level in the cooling mode. During the heating season the control is inoperable. The CCB1 controls the indoor humidity by altering the indoor blower speed and the compressor speed. Humidity level desired may be accomplished by adjusting a vertical slide to a set point on a scale of 40% thru 60% with 50% recommended as the initial set point. Five indicator lights (MIN — MAX) in a bar graph configuration indicate the difference in the actual relative humidity and the set point. This indicates the demand imposed on the system equipment, the more lights on, the longer the equipment will operate to obtain the desired humidity level. If no lights are on, the humidity is at or below the set point. Control is not furnished and must be ordered extra. Requires EBR1 Blower Relay Kit

EBR1 Blower Relay Kit (Optional) —

(75H90) allows CCB1 to be used with CB19/CBH19 blower

coil units.

Down-Flow Additive Base (Optional) —

base is required for models with electric heat installed in the down-flow position on combustible floors. Base is not furnished and must be ordered extra for field installation. See Specifications table and dimension drawing.

Air Filters (Not Furnished) —

Specifications tables for sizes. Filter rails are provided in return air opening of unit. See dimension drawings.

Filters must be ordered extra. See

EBR1 Blower Relay Kit

An optional additive

CB19 Up-Flow Side Return Air Filter Adaptor (Optional) —

Field installs on either side return air opening of up-flow cabinet. Constructed of heavy gauge galvanized steel with a bakedon paint finish. Equipped with flanges for ease of duct connection. Access panel allows easy removal an replacement of filter(s). One inch thick (25mm) frame type filter is furnished as standard. Media is washable or vacuum cleanable oil coated polyurethane. CB19-21 thru 41 adaptor requires one filter. CB19-51 and CB19-65 model has two. See Specification table for sizes. CB19-51 and CB19-65 fiberglass insulated adaptor is shipped knocked down and must be field assembled.

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Control

The

SPECIFICATIONS — CB19 UP-FLOW/DOWN-FLOW

{{Number and size of filters

Filter Adaptor

ECB19-2.5

ECB19-5

ECB19-6

ECB19-75

ECB19-8

Heat

ECB19-10

ECB19-12.5

ECB19-15

ECB19-20

ECB19-25

ECB19-30

Evaporator

Coil

Condensate drain connection (pvc) — in. (mm) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19)

Nominal cooling capacity — tons (kW) 1-1/2 (5.3) 2 (7.0) 2-1/2 (8.8) 3 (10.6) 4 (14.1) 5 (17.6)

Refrigerant HCFC-22

Blower wheel nominal diameter x width — in. (mm)

Blower motor output — hp (W) 1/10 (75) 1/5 (149) 1/3 (149) 1/3 (249) 1/3 (249) 1/2 (373)

Electrical characteristics 208/230 volts — 60 hz — 1 ph 208/230/460 volt 60 hz – 1 ph

Shipping weight — lbs. (kg) 1 package 143 (65) 146 (66) 167 (76) 167 (76) 209 (95) 213 (97)

Side Return Air

(Up-Flow Only)

Down-Flow

Combustible Base

Electric

Capacity

{Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and according to FTC labeling regulations {{Filters are not furnished and must be ordered extra.

*Includes additional blower motor heat capacity.

Model Number CB19-21 CB19-26 CB19-31 CB19-41 CB19-51 CB19-65

Net face area — ft.2 (m2) 4.22 (0.39) 4.22 (0.39) 5.27 (0.49) 5.27 (0.49) 7.0 (0.65) 7.0 (0.65)

Tube outside diameter — in. (mm) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)

Number of rows 3 3 3 3 3 3

Fins per inch (fins per m) 12 (472) 12 (472) 13 (512) 13 (512) 14 (551) 14 (551)

Suct. (vapor) line conn. – in. (mm) sweat 5/8 (16) 5/8 (16) 3/4 (19) 3/4 (19) 7/8 (22.2) 1-1/8 (28)

Liquid line conn. — in. (mm) sweat 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)

9 x 7

(229 x 178)

in. (1) 16 x 20 x 1 (1) 20 x 20 x 1 (1) 20 x 25 x 1

mm (1) 406 x 508 x 25 (1) 508 x 508 x 25 (1) 508 x 635 x 25

b Optional Accessories (Must Be Ordered Extra) b

Catalog number 95G73 95G74 95G75

Number and size

of filters

Shipping weight — lbs. (kg) 4 (2) 5 (2) 24 (11)

in. (1) 16 x 20 x 1 (1) 20 x 20 x 1 (2) 16 x 25 x 1

mm (1) 406 x 508 x 25 (1) 508 x 508 x 25 (2) 406 x 635 x 25

Catalog number 85G52 85G53 85G54

Ship. wt. – lbs. (kg) 8 (4) 8 (4) 8 (4)

*Output — Btuh (kW) 9,000 (2.6) 9,500 (2.8) - - - - - - - - - - - - - - - -

{A.F.U.E.

*Output — Btuh (kW) 18,000 (5.3) 18,000 (5.3) 18,000 (5.3) 18,000 (5.3) 19,000 (5.6) - - - -

{A.F.U.E.

*Output — Btuh (kW) 21,000 (6.2) 22,000 (6.4) 22,000 (6.4) 22,000 (6.4) 23,000 (6.7) - - - -

{A.F.U.E.

*Output — Btuh (kW) 25,000 (7.3) 25,000 (7.3) 25,000 (7.3) 25,000 (7.3) 26,000 (7.6) - - - -

{A.F.U.E.

*Output — Btuh (kW) 28,000 (8.2) 28,000 (8.2) 29,000 (8.5) 29,000 (8.5) 29,000 (8.5) 30,000 (8.8)

{A.F.U.E.

*Output — Btuh (kW) 35,000 (10.3) 35,000 (10.3) 35,000 (10.3) 35,000 (10.3) 36,000 (10.5) 37,000 (10.8)

{A.F.U.E.

*Output — Btuh (kW) - - - - 44,000 (12.9) 44,000 (12.9) 44,000 (12.9) 45,000 (13.2) 46,000 (13.5)

{A.F.U.E.

*Output — Btuh (kW) - - - - 52,000 (15.2) 52,000 (15.2) 53,000 (15.5) 53,000 (15.5) 54,000 (15.8)

{A.F.U.E.

*Output — Btuh (kW) - - - - - - - - - - - - 70,000 (20.5) 70,000 (20.5) 71,000 (20.8)

{A.F.U.E.

*Output — Btuh (kW) - - - - - - - - - - - - - - - - 87,000 (25.5) 88,000 (25.8)

{A.F.U.E.

*Output — Btuh (kW) - - - - - - - - - - - - - - - - - - - - 105,000 (30.8)

{A.F.U.E.

100% 100% - - - - - - - - - - - - - - - -

100% 100% 100% 100% 100% - - - -

100% 100% 100% 100% 100% 100%

- - - - 100% 100% 100% 100% 100%

- - - - - - - - - - - - 100% 100% 100%

- - - - - - - - - - - - - - - - 100% 100%

- - - - - - - - - - - - - - - - - - - - 100%

9 x 8

(229 x 203)

10 x 7

(254 x 178)

10 x 9

(254 x 229)

11 x 8

(279 x 203)

12 x 9

(317 x 229)

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SPECIFICATIONS — CBH19 HORIZONTAL

{{Numb

fil

Shippi

lbs. (kg)

ECB19-5

ECB19-6

ECB19-7

ECB19-8

Heat

ECB19-10

Capacity

ECB19-12.5

ECB19-15

ECB19-20

ECB19-25

ECB19-30

Model Number CBH19-21 CBH19-26 CBH19-31 CBH19-41 CBH19-51 CBH19-65

Blower section - - - - - - - - - - - - - - - - B19-51 B19-65 Indoor coil section - - - - - - - - - - - - - - - - CH19-51 CH19-65

Net face area — ft.2 (m2) 4.22 (0.39) 4.22 (0.39) 5.27 (0.49) 5.27 (0.49) 7.22 (0.67) 7.22 (0.67) Tube outside diameter — in. (mm) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)

Evaporator

Coil

Condensate drain connection (mpt) — in. (mm) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) (2) 3/4 (19) Nominal cooling capacity — tons (kW) 1-1/2 (5.3) 2 (7.0) 2-1/2 (8.8) 3 (10.6) 4 (14.1) 5 (17.6) Refrigerant HCFC-22

Blower wheel nominal diameter x width — in. (mm)

Blower motor output — hp (W) 1/10 (75) 1/5 (149) 1/3 (149) 1/3 (249) 1/3 (249) 1/2 (373)

Electrical characteristics 208/230v — 60 hz — 1 ph 208/230/460v 60 hz – 1 ph

Number of packages in shipment

Electric

Capacit

{Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and according to FTC labeling regulations {{Filters are not furnished and must be ordered extra.

*Includes additional blower motor heat capacity.

Number of rows 3 3 3 3 3 3 Fins per inch (fins per m) 12 (472) 12 (472) 13 (512) 13 (512) 14 (551) 14 (551) Suct. (vapor) line conn. — in. (mm) sweat 5/8 (16) 5/8 (16) 3/4 (19) 3/4 (19) 7/8 (22.2) 1-1/8 (28) Liquid line connection — in. (mm) flare 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5) 3/8 (9.5)

er and size of

ng weig

9 x 7

(229 x 178)

in. (1) 16 x 20 x 1 (1) 20 x 20 x 1 (1) 20 x 25 x 1

ters

mm (1) 406 x 508 x 25 (1) 508 x 508 x 25 (1) 508 x 635 x 25

Complete unit 149 (68) 149 (68) 176 (80) 178 (81) 240 (109) 242 (109) Blower section - - - - - - - - - - - - - - - - 118 (54) 120 (54)

9 x 8

(229 x 203)

10 x 7

(254 x 178)

10 x 9

(254 x 229)

11 x 8

(279 x 203)

Coil section - - - - - - - - - - - - - - - - 122 (55) 122 (55)

1 1 1 1 2 2

b Optional Accessories (Must Be Ordered Extra) b

ECB19-2.5

*Output — Btuh (kW) 9,000 (2.6) 9,500 (2.8) - - - - - - - - - - - - - - - -

{A.F.U.E. 99.8% 99.8% - - - - - - - - - - - - - - - -

*Output — Btuh (kW) 18,000 (5.3) 18,000 (5.3) 18,000 (5.3) 18,000 (5.3) 19,000 (5.6) - - - -

{A.F.U.E. 99.7% 99.7% 99.9% 100% 100% - - - -

*Output — Btuh (kW) 21,000 (6.2) 22,000 (6.4) 22,000 (6.4) 22,000 (6.4) 23,000 (6.7) - - - -

{A.F.U.E. 99.7% 99.7% 99.9% 100% 100% - - - -

*Output — Btuh (kW) 25,000 (7.3) 25,000 (7.3) 25,000 (7.3) 25,000 (7.3) 26,000 (7.6) - - - -

{A.F.U.E. 99.7% 99.7% 99.9% 100% 100% - - - -

*Output — Btuh (kW) 28,000 (8.2) 28,000 (8.2) 29,000 (8.5) 29,000 (8.5) 29,000 (8.5) 30,000 (8.8)

{A.F.U.E. 99.7% 99.7% 99.8% 100% 100% 100%

*Output — Btuh (kW) 35,000 (10.3) 35,000 (10.3) 35,000 (10.3) 35,000 (10.3) 36,000 (10.5) 37,000 (10.8)

{A.F.U.E. 99.7% 99.7% 99.8% 99.9% 100% 100%

*Output — Btuh (kW) - - - - 44,000 (12.9) 44,000 (12.9) 44,000 (12.9) 45,000 (13.2) 46,000 (13.5)

{A.F.U.E. - - - - 99.5% 99.7% 99.9% 100% 100%

*Output — Btuh (kW) - - - - 52,000 (15.2) 52,000 (15.2) 53,000 (15.5) 53,000 (15.5) 54,000 (15.8)

{A.F.U.E. - - - - 99.5% 99.7% 99.9% 100% 100%

*Output — Btuh (kW) - - - - - - - - - - - - 70,000 (20.5) 70,000 (20.5) 71,000 (20.8)

{A.F.U.E. - - - - - - - - - - - - 99.8% 99.8% 100%

*Output — Btuh (kW) - - - - - - - - - - - - - - - - 87,000 (25.5) 88,000 (25.8)

{A.F.U.E. - - - - - - - - - - - - - - - - 99.8% 99.9%

*Output — Btuh (kW) - - - - - - - - - - - - - - - - - - - - 105,000 (30.8)

{A.F.U.E. - - - - - - - - - - - - - - - - - - - - 99.9%

12 x 9

(317 x 229)

BLOWER DATA

UP-FLOW SIDE RETURN AIR FILTER ADAPTOR RESISTANCE

Air Volume Filter Resistance

cfm L/s in. wg. Pa

400 190 .01 2 600 285 .02 5

800 380 .03 7 1000 470 .05 12 1200 565 .08 20 1400 660 .08 20 1600 755 .08 20 1800 850 .09 22 2000 945 .09 22 2200 1040 .10 25 2400 1135 .10 25

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