User`s manual
Table 1--Physical Data--Unit 48GS (Continued)
UNiT SIZE 48GS
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSORS
Quantity
REFRIGERANT {R=22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER COIL
Rows...Fins/im
Face Area {sq ft)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Finsiim
Face Area (sq ft)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Bp (Rpm)
FURNACE SECTION*
Burner Orifice No. {Qty...DrSI Size)
Natural Gas
Burner Orifice No. {Qty...DrSI Size)
Propane Gas
RETURN-AIR FILTERS {in.)?
Throwaway
* Based on altitude of 0 to 2000 ft
048090 048115 060 t 18 060130
4 4 5 5
415 415 450 450
Scroll Reciprocating
1 1
6.0 6.0 8.0 8.0
.032 .032 .030 .030
1._17 1._17 2._17 2._17
12.3 12.3 12.3 12.3
3600 3600 3600 3600
22 22 22 22
'/_ (1100) 1/_(1100) '/_ (1100) '/_ (1100)
3...15 3...15 4._15 4...15
4.7 4.7 4.7 4.7
1600 1600 2000 2000
11X10 11X 10 11X10 11X10
3/4 (1075) 3/4 (1075) 1.0 (1075) 1.0 (1075)
3._38 3...33 3_.33 3_.31
3...46 3...42 3...42 3...41
24 X 30 24 X 30 24 X 30 24 X 30
048130 0$0090
4 5
415 450
6.0 8.0
Acutrol Device
.032 .030
1...17 2...17
12.3 12.3
3600 3600
22 22
1/_(1100) '/_ (1100)
3...15 4._15
4.7 4.7
1600 2000
11 X 10 11 X 10
3/4 (1075) 1.0 (I075)
3...31 3...38
3...41 3...46
24 X 30 24 X 30
1 Reqaired filter sizes shown are based on the larger of the AR[ (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300
ft/minate for throwaway type or 450 if/minute for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in wg
drain robe downward at a slope of at least 1-in. %r every 10 ft of
horizontal run, Be sure to check the drain robe for leaks,
1" min.
TRAP
OUTLET
2" rain.
Fig. 8--Condensate Trap
C00009
Step 7--INSTALL FLUE HOOD
The flue hood assembly is shipped screwed to the coil panel in the
indoor blower compartment Remove the service access panel to
locate the assembly (See Fig. 3i).
NOTE: Dedicated low NO x models MUST be installed in Call=
fomia Air Quality Management Districts where a Low NO× rote
exists,
These models meet the California maximmn oxides of nitrogen
(NOx) emissions requirements of 40 nanogramsdoule or less as
shipped from the fhctory,
NOTE: Low NO x requirements apply only to natural gas instal-
lations,
1
The venting system is designed to ensure proper venting. The
flue hood assembly must be installed as indicated in this
section of the unit installation insm/ctions,
Install the flue hood as fbllows:
1, This installation must confot_n with local building codes and
with the National Fuel Gas (?ode (NFGC), ANSI Z223 1 (in
( anada., CANiCGA B 149,1, and B 149 2) or NFPA (National
Fire Protection Association) latest revision Refer to Provin=
cial and local plumbing or wastewater codes and other
applicable local codes,
2, Remove flue hood from shipping location (inside the blower
compartment) Place vent cap assembly over flue panel, Orient
screw holes in vent cap with holes in the flue panel
3, Secure flue hood to flue panel by inserting a single screw on
the right side and the tet_ side of the hood.
Step 8--INSTALL GAS PIPING
)"he gas supply pipe enters the unit through the access hole
provided, The gas connection to the unit is made to the 1/2=in, FPT
gas inlet on the manual shutoff or gas valve.
Install a gas supply line that runs to the heating section. Refer to
Table 3 and the NFGC for gas pipe sizing. Do _ot zlse cast-iros_
pipe. It is recommended that a black iron pipe is used. Check the
local utility for recommendations concerning existing lines. Size
gas supply piping for 0,5 in, wg maximum pressure drop, _\2_*er
_¢se pipe smaHe/' than the ].lL_:in+ FflY gax m/et up tile zmit ,?aX
ICt]1'C.
For natural gas applications, the gas pressure at unit gas connection
must not be less than 4.0 in. wg or greater than 13 in. wg while the