Manual

ManualsBrandsCarrier ManualsAir equipment39B

39B

iupeeseoeo '6'/

Draw-Thru Central Station Weathermaker

SuPcesfi^cC) ay 0/7/

INDEX

PREINSTALLATION

INSTALLATION

Base Unit Assembly

Accessory Assembly

Unit Suspension and Mounting

Piping

Coil Removal and Reversing

Duct Connections

Motor and Drive

Belt Guard

START-UP

SERVICE

Coil Removal

Fan Section Access

Fan Shaft Bearing Replacement

Fan Shaft Removal

Fan Wheel Removal

PREINSTALLATION

PAGE

1. Use spacer bars when rigging to avoid bending

unit flanges per Fig. 1.

2. Check items received against packing list and

Tables 1,2, and 3. Notify Carrier at once of

any discrepancy.

3. Examine for damage incurred during shipment.

Especially check for bent fan wheel or shaft

which may result in future vibration problems.

If any damage is found, immediately file claim

with transit company.

4. Check fan wheel setscrews (sizes 040-060) or

fan wheel clamps (sizes 070-140) for secure

ness. Refer to Table 4 or Fig. 2 respectively.

a. Bolt threads with a dark-green finish require

no lubrication. Carefully lubricate all other

bolt threads with oil. Do not oil fan shaft.

b. Tighten clamps evenly.

5. Exercise care in handling all equipment.

6. If unit is to be stored for more than t, ’o v,eeks

prior to installation, observe the following

precautions:

a. Choose storage site that is kvel and ; +urdy.

to prevent undue stress or permanei t dis

tortion to fan. Do not subject bearings to

direct sunlight or temperatures in excess of

180 F. '

Protect bearings and rotating components

against moisture, abrasives and corrosion.

Cover entire unit with a tarp or plastic

coverall. Extend cover under unit if stored

on ground. Moisture and condensation can

cause loosening of internal insulation.

Periodically rotate fan shaft slowly by hand.

Fig. 1 — Rk , and Suspension DetailiS

Form 39B-1SI

Summary of content (24 pages)

PAGE 1
39B iupeeseoeo '6'/ Draw-Thru Central Station Weathermaker SuPcesfi^cC) ay 0/7/ INDEX PREINSTALLATION INSTALLATION Base Unit Assembly Accessory Assembly Unit Suspension and Mounting Piping Coil Removal and Reversing Duct Connections Motor and Drive Belt Guard START-UP SERVICE Coil Removal Fan Section Access Fan Shaft Bearing Replacement Fan Shaft Removal Fan Wheel Removal PAGE 1 6 6 9 14 15 19 19 19 22 22 23 23 23 23 23 24 b.
PAGE 2
Table 1 — 39B Type "A" Unit Arrangements (Horizontal With Reheat) Base unit and accessories on 39BA, sizes 040 thru 060 are shipped completely assembled.
PAGE 3
Table 1 — 39B Type "A" Unît Arrangements (Horizontal With Reheat) (cont) Base unit and accessories on 39BA, sizes 040 thru 060 are shipped completely assembled. r LEGEND HF — High-Velocity Filter Section BD — Bypass Duct LF — Low-Velocity Filter Section CC — Cooling Coil and Reheat P — Base Pan Coil Section PD — Preheat Duct Extension F — Fan Section PH — Preheat Coil Section FB — Face & Bypass Damper Section NOTE: Combination mixing box and filter assembly (MB), not shown, is shipped separately.
PAGE 4
Table 2 ~ 39B Type "B" Unit Arrangements (Horizontal Without Reheat) Base unit and accessories on 39BA, sizes 040 thru 060 are shipped completely assembled.
PAGE 5
Table 3 — 39B Type "D" Unit Arrangements (Vertical) Base unit and accessories on 39BA, sizes 040 thru 060 are shipped completely assembled. LEGEND BH CC F FB HF - Bypass Heat Section — Cooiing Coil Section — Fan Section — Face & Bypass Damper Section — High-Velocity Filter Section LF P PH PS RH — — — — — Low-Velocity Filter Section Base Pan Preheat Coil Section Plenum Section Reheat Coil Section NOTE: Combination mixing box and filter assembly (MB), not shown, is shipped separately.
PAGE 6
Table 4 — Setscrew Torques SETSCREW SIZE TORQUE 10 1/4 5/16 3/8 7/16 1/2 5/8 3/4 22 5- 30.5 in.-lb 52.7- 71 3 in.-lb 103.7-140.3 in.-lb 168.3-227.7 in.-lb 22.1- 29 9 ft-lb 32 3- 43 7 ft-lb 78.2-105.8 ft-lb 107.9-146.1 ft-lb INSTALLATION General DO NOT 1. Remove protective caps from coil piping con nections until ready to connect piping. 2. Bend or mutilate coil fins. 3. Remove protective cover or grease from fan shaft until ready to install sheave. 4. Lift by fan shaft extension or coil connections.
PAGE 7
r UNITS 39BA,BB SIZES 070 THRU 120 (Arrange ment A) - Refer to Fig. 3 and Table 1. 1. Remove shipping skid(s) and apply sealing compound to flanges on air intake side of fan section. 2. Face air intake side of fan section toward air discharge side of cooling coil section. 3. Fasten flange 1 to 2 with five 3/8-16 x 3/4-in. hex head cap screws, lockwashers and flange 2 weld nuts. 4. Fasten flanges 3 to 4 with one 3/8-16 x 3/4-in. hex head cap screw, lockwasher, and hex nut per two flanges. 5.
PAGE 8
UNITS 39BA,BB SIZES 130 THRU 140 AND 39BC SIZES 135 AND 140 (Arrangement D, ex cept D-18) — Refer to Fig. 5 and Table 3. NOTE: On arrangements D-31and35, sizes 135 and 140 — first fasten bypass heat section to cooling coil section per Accessory Assembly, then proceed with following steps; 1. Remove shipping skid(s) and apply sealing compound to flanges on air discharge side of cooling coil section. 2.
PAGE 9
Fig. 5 - Base Unit Assembly for 39BA,BB130-140 and 39BC135,140 (Arrangement D) Arrangement D-18 NOTE: Duct extension is shipped assembled to fan section. 1. Remove filler panel from cooling coil section and discard. 2. Fasten spray humidifier or preheat coil section with bypass when specified or plenum and face and bypass damper section to cooling coil section per Accessory Assembly. 3. Remove shipping skid and apply sealing compound to flanges on air discharge side of cooling coil section. 4.
PAGE 10
Fig. 7 — Assembly of Accessory Bypass Duct — (Arrangement A Only) d. Fasten flange 2 to matching surface of cooling coil section with seven 1/4-20 X 1/2-in. self-tapping screws and matching surface engagement holes. e. Fasten top panel to each flange 3 and 4 with two and three 1/4-20 x 1/2-in. self-tapping screws respectively per end and each flange 3 and 4 engagement holes. f. Fasten one angle 5 to each flange 6 with three 1/4-20 X 1/2-in. self-tapping screws and flange 6 engagement holes. g.
PAGE 11
г- Fig. 8 — Assembly of Accessory Face and Bypass Damper Section; Preheat Coil Section and/or Spray Humidifier Section with and without Bypass — (Sizes 070-120) 3. Fasten flanges 2 thru 5 of preheat coil or spray humidifier section without bypass to matching flanges of cooling coil section with the following: a. Fasten flanges 2 and 3 with three 3/8-16 X 3/4-in. hex head cap screws per two flanges and matching flange weld nuts. b. Fasten flanges 4 and 5 with three 3/8-16 x 3/4-in.
PAGE 12
5. PREHEAT COIL SECTION, AND/OR SPRAY HUMIDIFIER SECTION WITH AND WITHOUT BYPASS (Sizes 130 thru 140) - Refer to Fig. 9. 1. Remove shipping crate and apply sealing tape to flanges on air discharge side of spray humidifier section only. 2. Remove coil from preheat section to provide access to internal flanges 5, 6, and 8. 3. Face air discharge side of accessory(ies) toward air intake side of cooling coil section.
PAGE 13
5. Fasten flange 4 to matching flange of applicable accessory (except bypass heat section arranged for bypass cooling only) with seven 1/4-20 X 1/2-in. self-tapping screws and locknuts. 6. Fasten flange 4 to matching flange of bypass heat section arranged for bypass coohng only as follows: a. Line up flange 4 with matching flange of accessory. b. Drill seven engagement holes in matching flange with a no. 3 drill. c. Fasten flange 4 to matching flange with seven 1/4-20 x 1/2-in. self-tapping screws. 7.
PAGE 14
FILTER SECTION OR COMBINATION MIXING BOX AND FILTER SECTION (All sizes and arrangements, high and low velocity) — Refer to Fig. 11. d. Fasten flange 5 to matching flange of cool ing coil section (sizes 135 and 140) with seven 4/4-20 X 1/2-in. self-tapping screws and matching flange engagement holes. 7.
PAGE 15
OUTDOOR UNITS — Not recommended for standard units unless following precautions are taken into consideration. Consult your local Carrier representative for units specially factory equipped for outdoor use. 1. Externally insulate all accessories that are not factory insulated (combination mixing box and filter section, filter section, and face and bypass damper section). 2.
PAGE 16
Partial Load Operation — System controls must be designed with consideration of following: 1. No coil or coil split served by a single refrig erant distributor and expansion valve can be expected to operate satisfactorily at less than 50% of design load. 2. As load reduces, a portion of coil surface must be deactivated so that remaining active coil or coil splits operate between 50 and 100% of design load. 3. Face-split coils may be used when air quantity is constant.
PAGE 17
a Fig. 14 — Suction Line Piping — Single Unsplit Coil Fig.
PAGE 18
Fig. 16 — Suction Line Piping — Row-Split Coil HUMIDIFIERS — Humidifier water and steam supply must be odor-free and uncontaminated. Consideration shall be taken by installer as to corrosive and odor effect from hard or contami nated water. Carrier assumes no responsibility for problems caused by inadequate water treatment. General — It is recommended that a strainer be installed in supply line. Steam grid humidifiers require a drain line trap with a water seal to offset unit negative static pressure.
PAGE 19
Motor and Drive GENERAL 1. Excessive tipping will cause oil loss in sleeve bearing motors. Follow motor manufacturer’s recommendations. 2. Check job prints to determine correct motor mounting position. 3. Drive package numbers are marked on drive package and label on drive end of fan section. 4. Required center-to-center distance (C/D) be tween fan and motor shafts is marked on fan drive package. 5. Refer to Table 7 for motor base used on unit sizes 070 thru 140.
PAGE 20
Table 8 — Fan Belt Deflection Force I lb) 4. Remove protective cover and clean grease from fan shaft with solvent. 5. Apply a light coat of grease or white lead to fan shaft. 6. Install fan and motor sheaves with correct angular and parallel alignment per Fig. 22. Refer to drive package carton for additional instructions. BELT CROSS SECTION SMALL PD RANGE A 3.0 -3.6 3.8 -4.8 5.0 -7.0 B 3.4 -4.3; 4.4 -5.6 5.8 -8.6 7.0 -9.4 9.6-16.0 4L 2.1 -2.8 3.0 -3.5 3.7 -5.
PAGE 21
sizes 040 thru 060). A pry bar may be used to support weight of motor. 10. Secure two support angle bolts and loosen jackscrews. 11. Adjust motor base after mounting motor as follows: NOTE: If center-to-center distance was not properly set before mounting motor, adjust base height as follows for proper belt tension: a. Turn jackscrews until they contact motor base cradle. b. Block up motor under mounting angle nearest pivot points to support weight of motor.
PAGE 22
Belt Guard UNIT SIZES 040 THRU 120 1. Position belt guard and drill three engagement holes (sizes 040 thru 060) with a no. 5 drill or four engagement holes (sizes 070 thru 120) with a no. 3 drill in side of fan section using mounting bracket clearance holes as templates. 2. Secure guard to fan section with three 1/4-20 X 1/2-in. self-tapping screws. UNIT SIZES 130 THRU 140 1. Position belt guard and drill eight engagement holes with a no.
PAGE 23
5. Install new bearing and tighten bearing locking collar setscrews per Table 1 and Fig. 26. 6. Make certain fan wheel does not rub sides of fan housing after installing new bearings. 7. Recoat fan shaft with a rust inhibitor. 8. Replace sheave, belts, and belt guard. SERVICE Coil Removal 1. Disconnect piping. 2. Remove coil cover panel. 3. Remove air baffle from both ends of coil on leaving air side. 4. Remove and discard coil shipping hold-down bolts from both ends of coil. 5. SUde coil out of unit.
PAGE 24
Fan Wheel Removal 1. Remove fan shaft bearings per Fan Bearing Replacement. 2. Remove fan shaft per Fan Shaft Removal. 3. Remove fan discharge ductwork. 4. Remove cutoff plate per Fig. 29 and remove fan wheel thru housing discharge. 5. Replace any damaged internal insulation. 6. Replace fan wheel in reverse order and note following; a. When replacing fan wheels on unit sizes 070 thru 140, ensure balancing reference marks on wheel (normally a red line) and clamps line up. Adjust fan clamp torque per Fig.