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Number One |
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AirConditioniiX) |
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Maker |
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e
Division of Cairier Corporation
Syracuse New York
Combination Heating/Cooling Units
INTRODUCTION
The 48DH, DL and DM combination heating/ cooling units are complete systems designed for outdoor installation on slab or rooftop.
Installation consists of: rigging and mounting the unit; attaching ductwork; making single gas, electrical and condensate connections; and attach ing thermostat leads. A field-furnished filter rack is required in the return air stream.
RECEIVING THE UNIT
Examine the unit carefully for any damage incurred in shipment. If found, file claim with transportation company immediately.
Check unit nameplate to ensure that unit electrical requirements match available power supply, and that unit is designed for use with the proper gas type (natural or liquefied petroleum).
Leave unit on shipping skids until ready for mounting.
INSTALLATION
Check national and local gas and electrical codes and local building codes for any special installation requirements.
Unit Location — Install unit outdoors and as close to building duct openings as possible. Unit may face in any direction since neither the condenser air inlet nor the flue outlet (Fig. 1) are affected by wind. Do not locate unit near sources of con taminated air.
Although the unit is weatherproof, position unit so that water and ice from roofs or eaves cannot fall directly on the unit.
SPACE LIMITATIONS - Provide sufficient space for unimpeded air flow and for wiring and servicing unit (Fig. 1).
,CONO UNIT
2-0 OVERHEAD SPACE SECTION |
.JSSiiSOc |
045 8005 |
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REQ FOR SERVICE AND ACCESS PANEL |
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AIR FLOW |
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002 |
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'O N L Y |
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HEATING
SECTION
i ACCESS PANEL
SERVICE ^ |
^0' |
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OPENINGS |
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n DIAM HOLE |
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BOTH |
S I D E : |
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® FOR LINE |
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ACCESS SIDE |
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POWER WIRING |
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FLUE OUTLET |
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—,—X::... ____WIND CAP ASSEMBLY (CONDENSER AIR OUTLET |
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îLÎÎÎ |
002 UNIT ONLY) |
COMBUSTION AIR
• DIAM*
(SMTG HOLES)
*This dimension is not applicable to 002 units because there are no mounting rails
Space required for service Design certified by A G.A. for installation on combustible type floor with a minimum ciear-
ta-'iiEiEJ ance space of 1 in. on duct connection side, and 12 in on remaining sides
O' |
) Condenser Air |
Indoor (Evaporator) Air |
Fig. 1 — Physical Data
Table 1 — Base Unit Dimensions (ft-in.)
UNIT |
48DL |
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48 DH |
48DL |
48DL |
48 DM |
48 DH |
48DL |
48DL |
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48DH |
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002* |
003 |
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004 |
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Q45 |
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005 |
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A |
3-10 |
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3-10 |
4- 7 |
4- 7 |
3_2 |
5- 2 |
5- 2 |
5- 2 |
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5- 7\ |
В |
— |
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— |
4- 7% |
4- 7% |
5-2У |
5- 2% |
5- 2% |
5- 2У |
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5- 8У |
C |
0-1 0V3 |
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0 - 1 оу |
0-юу |
0 - 1 оу |
1-ЗУ |
1- 5У |
1- ЗУ |
1- ЗУ |
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1 9 |
D |
0-11 Уз |
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0 - 1 1 у |
1- 2 |
1- 8 |
1-8 |
1- 8 |
1-11 |
1-11 |
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1-11 |
E |
1- 0 |
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1- 0 |
1- 0 |
1- 0 |
1-0 |
1- 0 |
1- 0 |
1- 0 |
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1- оу |
F |
2- 2У |
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2- 2% |
2- 2У |
2- 2У |
2-2У |
2- 2У |
2- 2% |
2- 2% |
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2- 2У |
G |
— |
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— |
2- 2У |
2- 2У |
2-4У |
2- 2Ув |
2- 4У |
2- 4У |
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2- 4У |
H |
0-11У |
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0-11У |
0-11У |
0-11У |
1-4У |
1- 4У |
1- 4У |
1- 4У |
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1- 4У |
J |
0- 4 |
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0- 4 |
0- 4 |
0- 4 |
0-7У |
0-11 |
0- 7У |
0- 7У |
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1- 2У |
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*Refer to Table 2 for differences of these series
Form 48DH-6
Table 2 — Physical Data
UNIT |
48DL002 |
48DH002 |
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48DL003 |
48DL004 |
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48 DM004 |
48DH004 |
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48DL045 |
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48DL005 |
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48DH005 |
OPERATING WT (lb) |
331 |
343 |
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385 |
411 |
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430 |
438 |
450 |
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476 |
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512 |
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REFRIG (22) CHG (Ib-oz) |
3.2 |
3 2 |
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3.6 |
5 1 |
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5 1 |
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5 2 |
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5 1 |
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5 1 |
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COMPRESSOR |
M27 (1-ph) |
M27 (1-ph) |
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M34 |
M40 |
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M40 |
M40 |
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P46 |
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P53 |
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P53 |
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AHbbz^/h(J-ph) |
AH5527h(3-ph) |
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2 |
2 |
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Cyl inders |
2 |
2 |
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2 |
2 |
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2 |
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2 |
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2 |
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Rpm (60-Hz) |
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3500 |
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CONDENSER FAN |
1700 |
1700 |
Propel ler-Type — Direct Drive; Vertical Disc |
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large |
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2700 |
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2700 |
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Air Quantity (Cfm) |
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2000 |
2500 |
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2500 |
2500 |
2700 |
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Motor Hp |
Vs |
Vs |
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Vs |
Vs |
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Vs |
Vs |
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Vs |
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V, |
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Vs |
EVAPORATOR FAN |
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Centrifugal — |
Direct Drive; Horizontal Discharge |
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Г |
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CAPACITY (1000 Btuh) |
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48 |
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24 |
24 |
30 |
36 |
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36 |
36 |
42 |
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48 |
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Cool in g |
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Input Heotlng/Bonnet* |
56/42 |
80/60 |
80/60 |
80/60 |
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110/82 5 |
125/93 75 |
100/75 |
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110/82 5 |
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150/112 5 |
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MAX EXTERNAL |
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STATIC PRESSURE |
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40 |
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Heating (in. W.C.) |
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FILTERSt (1-in. thick) |
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1 15x20 |
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1 20x25 |
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1 20x25 |
Disposable — No. .. |
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1 15x20 |
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1 15x20 |
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Size (in.) |
1 .20x25 |
1 20x25 |
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2 15x20 |
1 20x20 |
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1 20x20 |
1 .20x20 |
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2 20x20 |
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1 25x25 |
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1 .25x25 |
Permanenti — No. .. |
1 15x20 |
1 15x20 |
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1 20x20 |
1 20x20 |
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1 20x20 |
1 .20x20 |
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1 20x25 |
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2 15x20 |
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2 15x20 |
Size (in.) |
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HEAT TEMP RISE (F) |
35-65 |
45-75 |
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35-65 |
35-65 |
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35-65 |
45-75 |
35-65 |
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35 65 |
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45-75 |
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* Ratings shown for elevations up to 2000 ft above sea level. For ele |
i Recommended field-supplied filter |
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vations above 2000 ft deduct 4% capacity for each 1000 ft above |
ifBased on 0.082 in. wg pressure drop or less thru filter at 520 ft/min |
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sea level |
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face velocity. |
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OUTSIDE AIR LIMITATIONS - Although there are no restrictions on either the percentage or the temperature of the outside air circulated thru the unit, the rate of moisture condensation from the combustion process increases significantly when return air temperature drops below 50 F. Protect the drain holes in the bottom pan against ice buildup if outside air of below freezing tempera ture is used
VIBRATION ISOLATION -- The unit compressor, evaporator fan and condenser fan are mounted on isolators to minimize vibration. Additional isola tion is not required for slab mounting. With some types of roof construction, however, the use of field-furnished mbber pad type isolators may be advisable.
Unit Rigging
1. Sling the unit perpendicularly to shipping skid mnners. Use spreader bars to prevent damage from sling or cable.
2.Raise unit to desired location and remove shipping skid.
3.Mount and level the unit as indicated in Unit Support and Mounting section.
Unit Support and Mounting
LEVELING THE UNIT — Level the unit from end to end but pitch the unit slightly (3/8 to 1/2 in ) towards the condensate drain on the service access face of the unit (Fig. 1). Use the unit frame as a leveling reference.
SLAB MOUNTING — Mount the unit on a concrete pad, cement blocks, bricks or creosoted wood of sufficient area and strength to support the unit weight (Table 2) without distortion or damage and maintain the drainage pitch recommended above.
A gravel apron will prevent grass and foliage from obstructing the condenser air inlet (Fig. 1).
FLAT OR RECESSED ROOF MOUNTING should be as close as possible to the roof duct opening Place the unit on at least 2 wooden 2x4 in. or 2x6 in. sleepers.
Sleepers may be perpendicular to or parallel to the unit mounting rails, but must span at least 2 roof joists or purlins to distribute unit weight. Set the sleepers in roof cement or mastic. Do not plug drain holes in the compressor or furnace compartment.
Do not support the unit by the ends of the base rails, nor use vibration isolators at these points. Unit will not be properly supported and could sag in the middle.
PITCHED |
ROOF |
MOUNTING -- |
Constmct a |
s t u r d y |
w e l d e d |
o r b o l t e d |
f r a m e o f |
1-1/2 X 1-1/2 X 1/4 in. or larger angle iron, with |
% |
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frame members at right angles to unit rails. Make |
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provisions for securing unit to frame. Use roof |
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cement or mastic where frame is in contact with |
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roof. |
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Ductwork Installation — For |
air duct system design |
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information, |
refer to Carrier |
System Design |
Man |
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ual, Part 2. System air flow must be within the |
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range of |
temperature rise and external |
static |
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pressure shown on the unit A.G.A. rating plate. |
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Bolt or screw ductwork to unit supply and return air duct flanges and seal joints with sheet metal flashing. Flange location and dimensions are given in Fig. 1 and Table 1. Use flexible connectors between ductwork and unit to dampen vibration. If a single split duct is connected to the unit, use a gasket to prevent air bypass between supply and return sides.
Insulate and weatherproof all external duct work. Secure ducts to building structure and weatherproof all duct openings in wall or roof. Ducts passing thru unconditioned spaces must be insulated and provided with a vapor barrier.
Filter Installation (Field-Supplied)
1. Locate filter in return air system. Convenient location for filter is inside building behind return air grille. Size and number of required filters is given in Table 2.
2. Attach filter manufacturer’s instructions to filter rack.
ASSEMBLE WIND CAP AND
COMBUSTION-AIR INLET BOX
Locate — The wind cap assembly, heat-shield collar and combustion-air inlet box (items 1, 2 and 3 of Fig. 2) are shipped within the condenser section of all size 003 thru 005 units except 460 volt unit.
On 460 volt, size 003 thru 005 units, only the combustion-air inlet box is shipped within the condenser section. The heat-shield collar and wind cap assembly are shipped in a separate package.
On size 002 units of any voltage, the combustion-air inlet box is inside the unit behind the heating section access panel (Fig. 1). The heat-shield collar and wind cap assembly are shipped in a separate package.
Remove — On size 002 units, remove the heating section access panel (Fig. 1) and obtain the combustion-air inlet box.
On size 003 thru 005 units, remove 6 sheet metal screws and lift condenser fan, grille and orifice from the top of the condenser section (Fig. 3). Remove and discard metal banding securing the wind cap and/or inlet box and remove the item(s) from the condenser section.
Before replacing the condenser fan, grille and orifice, remove any shipping tape from the con denser fan.
Assemble (Fig. 2)
1. Mount the combustion-air inlet box (item 3) by sliding the horizontal box flange under the
retaining clip on the unit top cover. Fasten the inlet box with sheet metal screws provided.
2.Place end of heat-shield collar (item 2) over top cover extrusion.
3.Slide flue pipe into heat-shield collar and secure wind cap assembly (item 1) with 3 sheet metal screws thru wire cage eyelets.
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WIND CAP |
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ASSEMBLY |
FLUE PIPE |
£Y£LETS(3) |
(PART OF WIND CAP |
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ASSEMSLY) |
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■JXHEAT-SHIELC |
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^COLLAR |
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COMBUSTION |
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AIR INLET BOX |
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RETAINJNO |
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CLIP |
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TOP COVER |
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OF UNIT |
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TOP COVER |
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EXTRUSION |
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FLUE BOX |
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EXTRUSION |
HEATING SECTION
ACCESS PANEL
Fig. 2 — Wind Cap and Air Inlet Box Assembly
Fig. 3 — Removing Condenser Fan
and Orifice Assembly
PIPING AND WIRING
Gas Piping — Install piping per national and local codes and ANSI Z223.1 entitled “Installation of Gas Appliances and Gas Piping,” (published by American Gas Association, 1515 Wilson Blvd., Arlington (Rosslyn), Va. 22209).
1. Furnish the gas line from the main gas supply to the unit gas valve (Fig. 4).
2.Size the supply pipe for 0.3-in. wg maximum pressure drop and for the volume of gas required (Tables 3, 5 and 6). Pipe size must equal or exceed size of gas connection at unit.
3.Use pipe dope approved for use with liquefied petroleum (LP) gases.
4.Pitch all horizontal pipe runs towards the unit 1/4 in. per 15 ft to prevent trapping condensed
moisture.
5.Support piping to maintain proper pitch, prevent strain on unit controls, and prevent accidental movement of piping.
6.Install a tee for attachment of a dirt and moisture drip pocket (Fig. 4). Tee should be at same level or below gas valve connection. Drip pocket must be protected against freeze-up.
7.Install manual shutoff valve on gas piping per local codes.
8.Provide a ground joint union in the gas supply line near the unit gas valve.
9.Protect gas piping from freezing temperatures.
Gas stoppage can result from failure to insulate pipe against wide or sudden temperature changes.
10. When piping is completed, check entire gas assembly and field piping with soap and water solution.
Never use an open ñame for leak testing.
Fig. 4 — Gas Piping Details
Table 3 — Maximum Pipe Cap. (cfh)^
PIPE |
V. |
NOMINAL PIPE SIZE |
1V4 |
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LENGTH (ft) |
V |
1 |
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/ 4 |
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10 |
132 |
278 |
520 |
1050 |
20 |
92 |
190 |
350 |
730 |
30 |
73 |
152 |
285 |
590 |
40 |
63 |
130 |
245 |
500 |
50 |
56 |
115 |
215 |
440 |
60 |
— |
105 |
195 |
400 |
70 |
|
96 |
180 |
370 |
80 |
_ |
90 |
170 |
350 |
90 |
— |
84 |
160 |
320 |
100 |
- |
79 |
150 |
305 |
*Cfh — Cu ft/hr based on 0.3 in. wg pressure drop and 0.6 gas specific gravity.
NOTE;
Correction is not necessary for normal number of fittings nor for 0.7 gas specific gravity unless specified.
Table 4 — Electrical Data (60-Hz)
UNIT |
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VOLTAGE |
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UNIT |
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COMPR |
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OFM |
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Model |
Serie |
Norn V/Ph |
WSA |
FLA |
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ICF |
FU |
FLA |
LRA |
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FLA |
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48DL,DH |
200 |
|
23 5 |
19 5 |
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83 4 |
35 |
16 1 |
80 0 |
2 0 |
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1 4 |
300 |
230/1 |
21 6 |
17 9 |
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75 4 |
30 |
14 5 |
72 0 |
2 0 |
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1 4 |
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002 |
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400 |
208/3 |
16 8 |
14 0 |
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58 4 |
20 |
10 6 |
55 0 |
2 0 |
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1.4 |
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200 |
208/1 |
29 8 |
24 3 |
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102.8 |
40 |
20.8 |
99 0 |
2 4 |
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1 4 |
48DL |
300 |
230/1 |
27 3 |
22.3 |
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91 8 |
35 |
18.8 |
88.0 |
2 4 |
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1 4 |
400 |
208/3 |
18.8 |
15 5 |
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73 8 |
25 |
12 0 |
70 0 |
2 4 |
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1 4 |
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003 |
500 |
230/3 |
17 4 |
14 4 |
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63.8 |
25 |
10 9 |
60.0 |
2 4 |
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1.4 |
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^00 |
___ 460A3__ |
8.8 |
7 4 |
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31 9 |
15 |
5 5 |
30 0 |
2.4 |
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1 4 |
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300 |
'^208/l~ |
39 0 |
32 4 |
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117 9 |
50 |
26 5 |
112,0 |
3 1 1 |
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2.8 |
48DL,DH, |
230/1 |
35 9 |
29 9 |
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105 9 |
45 |
24 0 |
100 0 |
3 1 |
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2.8 |
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400 |
208/3 |
25 0 |
21 2 |
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85 9 |
30 |
15 3 |
80 0 |
3 1 |
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2 8 |
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DM004 |
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500 |
230/3 |
23 3 |
19 8 |
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75 9 |
20 |
13 9 |
70 0 |
3.1 |
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2 8 |
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600 |
460/3 |
11.3 |
10.0 |
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39.0 |
15 |
7 0 |
35 0 |
3 1 |
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2.8 |
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200 |
208/1 |
41 0 |
34 1 |
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115 6 |
60 |
27 5 |
109 0 |
3 8 |
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2.8 |
48DL |
300 |
230/1 |
36 5 |
30 5 |
|
100 6 |
50 |
23 9 |
94 0 |
3 8 |
|
2 8 |
400 |
208/3 |
27.4 |
23 2 |
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85.6 |
35 |
16 6 |
79 0 |
3 8 |
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2 8 |
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045 |
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500 |
230/3 |
24 5 |
20 9 |
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73 6 |
30 |
14 3 |
67 0 |
3 8 |
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2.8 |
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600^ |
460/3 |
12 4 |
10 6 |
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38 3 |
15 |
7 3 |
35 0 |
3 8 |
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2 8 |
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200 |
'208/1^ |
46 5 |
38 5 |
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132.6 |
60 |
31 9 |
126 0 |
3 8 |
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2.8 |
48DL,DH |
300 |
230/1 |
41 5 |
34 5 |
|
112 6 |
50 |
27 9 |
106 0 |
3 8 |
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2.8 |
400 |
208/3 |
29 5 |
24.9 |
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93.6 |
40 |
18 3 |
87 0 |
3 8 |
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2 8 |
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005 |
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500 |
230/3 |
25 2 |
21.5 |
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76 6 |
35 |
14 9 |
70 0 |
3 8 |
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2 8 |
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600 |
460/3 |
13 3 |
11.3 |
|
38 3 |
20 |
8 0 |
35 0 |
3 8 |
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2.8 |
FLA — Full Load Amps
FU — Dual Element Fuse or Circuit Breaker having high inrush capability (max allowable amps)
ICF — Max Instantaneous Current Flow during start-up is the sum of compressor LRA plus the FLA of all other motors in the unit.
IFM Indoor (Evaporator) Fan Motor
LRA Locked Rotor Amps
OFM Outdoor (Condenser) Fan Motor
WSA Wire Sizing Amps per NEC equals 1.25 x FLA of the largest motor plus the sum of all other motors in the unit.
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