User Guide
Table Of Contents
- Product Data
- Features/Benefits
- Model Number Nomenclature
- AHRI Capacities
- Unit Dimensions
- Unit Dimensions
- 36-60
- Accessory Dimensions
- 1. Roof curb must be set up for unit being installed.
- 2. Seal strip must be applied, as required, to unit being installed.
- 3. Roof curb is made of 16-gauge steel.
- 4. Attach ductwork to curb (flanges of duct rest on curb).
- 5. Insulated panels: 1-in. (25.4 mm) thick fiberglass 1 lb. density.
- Performance Data
- Application Data
- Electrical Data
- Connection Wiring Schematic 208/230-1-60
- Controls
- Operating Sequence
- 2. The normally open contacts of energized contactor (C) close and complete the circuit through compressor motor (COMP) to condenser (outdoor) fan motor (OFM). Both motors start instantly.
- 3. The set of normally open contacts on the interface fan board (IFB) are closed which energizes a circuit to the indoor fan motor (IFM).
- Guide Specifications
- Packaged Gas Heating/Electric Cooling Units Constant Volume Application
- HVAC Guide Specifications
- General
- Products
- Guide Specifications (Continued)
- 2. Compressor Start Kit (single phase units only):
- 3. Thermostat:
- 4. Crankcase Heater:
- 5. Economizer:
- 6. Filter Rack Kit:
- 7. Flat Roof Curb:
- 8. Flue Discharge Deflector
- 9. Low Ambient Package:
- 10. Manual Outdoor Air Damper:
- 11. Square-To-Round Duct Transitions (24-48 models):
- 12. Time Guard II
- 13. Low Pressure Switch Kit
577C--K Ultra Low NOx: Product Data
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
21
36060
25 - 55
(14 - 31)
Low† Blue
Alternate Cooling,
Alternate Gas Heating
CFM 1096 1044 994 945 892 837 780 717 664 612
BHP 0.14 0.15 0.16 0.18 0.19 0.19 0.20 0.21 0.22 0.23
Gas Heat Rise (
o
F)
41 43 45 47 50 53 NA NA NA NA
Gas Heat Rise (
o
C)
23 24 25 26 28 30 NA NA NA NA
Med-Low‡ Pink
Gas Heating,
Alternate Cooling
CFM 1151 1103 1056 1002 953 897 845 788 729 678
BHP 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25
Gas Heat Rise (
o
F)
39 40 42 45 47 50 53 NA NA NA
Gas Heat Rise (
o
C)
22 22 23 25 26 28 29 NA NA NA
Medium Red
Alternate Cooling,
Alternate Gas Heating
CFM 1299 1252 1204 1155 1106 1059 1007 959 905 844
BHP 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31
Gas Heat Rise (
o
F)
34 36 37 39 40 42 44 47 49 53
Gas Heat Rise (
o
C)
19 20 21 21 22 23 25 26 27 29
Med-High** Orange
Cooling,
Alternate Gas Heating
CFM 1382 1335 1292 1246 1202 1152 1106 1058 1007 957
BHP 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35
Gas Heat Rise (
o
F)
32 33 35 36 37 39 40 42 44 47
Gas Heat Rise (
o
C)
18 19 19 20 21 22 22 23 25 26
High Black High Static Cooling Only
CFM 1530 1485 1442 1398 1354 1309 1263 1217 1169 1120
BHP 0.33 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43
42060
25 - 55
(14 - 31)
Low† Blue
Alternate Heating
CFM 956 899 843 786 729 676 621 558 504 435
BHP 0.13 0.13 0.14 0.15 0.16 0.16 0.17 0.18 0.18 0.19
Gas Heat Rise (
o
F)
47 50 53 NA NA NA NA NA NA NA
Gas Heat Rise (
o
C)
26 28 29 NA NA NA NA NA NA NA
Med-Low‡ Pink
Heating
Alternate Cooling
CFM 1201 1153 1107 1060 1012 965 917 871 828 782
BHP 0.21 0.22 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29
Gas Heat Rise (
o
F)
37 39 40 42 44 46 49 51 54 NA
Gas Heat Rise (
o
C)
21 22 22 23 25 26 27 28 30 NA
Medium Red
Alternate Cooling
Alternate Heating
CFM 1443 1402 1361 1322 1284 1243 1204 1164 1124 1084
BHP 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.42
Gas Heat Rise (
o
F)
31 32 33 34 35 36 37 38 40 41
Gas Heat Rise (
o
C)
17 18 18 19 19 20 21 21 22 23
Med-High** Orange
Cooling
Alternate Heating
CFM 1529 1491 1451 1411 1376 1338 1300 1261 1223 1185
BHP 0.37 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47
Gas Heat Rise (
o
F)
29 30 31 32 32 33 34 35 36 38
Gas Heat Rise (
o
C)
16 17 17 18 18 19 19 20 20 21
High Black
High Static Cooling Only
CFM 1604 1565 1529 1490 1455 1421 1385 1348 1310 1274
BHP 0.42 0.44 0.45 0.46 0.47 0.48 0.49 0.50 0.51 0.52
Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 24-60
Unit
Size
Heating
Rise
o
F (
o
C)
Motor Speed Tap
Allowable
Functions
ESP (in. W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1