8
Table 1 – Physical Data -- Unit 574B (Continued)
UNIT SIZE 574B
048090
048115
048130
060090
060115
060130
NOMINAL CAPACITY (ton)
4
4
4
5
5
5
OPERATING WEIGHT (lb.)
463
463
463
499
499
499
COMPRESSORS
Quantity
Scroll
1
REFRIGERANT (R---410A) Quantity (lb.)
11.5
11.5
11.5
13.5
13.5
13.5
REFRIGERANT METERING DEVICE
TXV
CONDENSER COIL Rows...Fins/in. Face
Area (sq ft)
2...21
17.4
2...21
17.4
2...21
17.4
2...21
19.3
2...21
19.3
2...21
19.3
CONDENSER FAN Nominal Cfm Diameter
(in.) Motor Hp (Rpm)
3300 22 1/4
(1100)
3300 22 1/4
(1100)
3300 22 1/4
(1100)
3300 22 1/4
(1100)
3300 22 1/4
(1100)
3300 22 1/4
(1100)
EVAPORATOR COIL Rows...Fins/in. Face
Area (sq ft)
4...15
4.7
4...15
4.7
4...15
4.7
4...17
5.7
4...17
5.7
4...17
5.7
EVAPORATOR BLOWER Nominal
Airflow (Cfm) Size (in.) Motor (hp)
1400
11x10
3/4 (1075)
1400
11x10
3/4 (1075)
1400
11x10
3/4 (1075)
1710
11x10
1.0 (1040)
1710
11x10
1.0 (1040)
1710
11x10
1.0 (1040)
FURNACE SECTION*
Burner Orifice No. (Qty...Drill Size) Natural
Gas Burner Orifice No. (Qty...Drill Size)
Propane Gas
3...38
3...46
3...33
3...42
3...31
3...41
3...38
3...46
3...33
3...42
3...31
3...41
HIGH---PRESSURE SWITCH (psig) Cut---out
Reset (Auto)
610 +/---15
420 +/---25
LOSS---OF---CHARGE / LOW---PRESSURE
SWITCH (Liquid Line) (psig) Cut---out Reset
(auto)
20 +/---5
45 +/---10
RETURN---AIR FILTERS (in.)†
Throwaway
24x30x1
24x30x1
24x30x1
24x30x1
24x30x1
24x30x1
*Based on altitude of 0 to 2000 ft.
{
Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of
300 ft/minute for high---capacity type. Air filter pressure drop for non---standard filters must not exceed 0.08 in. wc.
This prevents the pan from overflowing. Prime the trap with
water. Connect a drain tube--using a minimum of 3/4--in. PVC or
3/4--in. copper pipe (all field--supplied) -- at the outlet end of the
2--in. trap. Do not undersize the tube. Pitch the drain tube
downward at a slope of at least 1--in. for every 10 ft of horizontal
run. Be sure to check the drain tube for leaks.
1” MIN.
2” MIN.
TRAP
OUTLET
C99013
Fig. 7 -- Condensate Trap
Step 7 — INSTALL FLUE HOOD
The flue hood assembly is shipped in the return section of the
indoor blower compartment (See Fig. 9). Remove the return duct
cover to locate the assembly.
Dedicated low NOx models MUST be installed in California Air
Quality Management Districts where a Low NOx rule exists.
These models meet the California maximum oxides of nitrogen
(NOx ) emissions requirements of 40 nanograms/joule or less as
shipped from the factory.
NOTE
:
Low NOx requirements apply only to natural gas
installations.
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury
or death and unit component damage.
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 instructions.
!
WARNING
Install the flue hood as follows:
1. This installation must conform with local building codes
and with the National Fuel Gas Code (NFGC), ANSI
Z223.1 (in Canada, CAN/CGA B149.1, and B149.2) or
NFPA (National Fire Protection Association) latest
revision. Refer to Provincial and local plumbing or
wastewater codes and other applicable local codes.
2. Remove flue hood from shipping location (inside the
return section of the blower compartment--See Fig. 9).
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 left side of the hood.
574B
