Installation manual
175231-YIM-A-0706
Unitary Products Group 3
LIST OF FIGURES
Fig. # Pg. #
1 TYPICAL RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 FIXED OUTDOOR AIR DAMPER . . . . . . . . . . . . . . . . . . . 11
4 RECOMMENDED DRAIN PIPING . . . . . . . . . . . . . . . . . . 11
5 TYPICAL FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 EXTERNAL SUPPLY CONNECTION EXTERNAL
SHUT-OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7 BOTTOM SUPPLY CONNECTION EXTERNAL
SHUT-OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 VENT AND COMBUSTION AIR HOOD . . . . . . . . . . . . . . 16
9 ENTHALPY SETPOINT ADJUSTMENT . . . . . . . . . . . . . . 18
10 HONEYWELL ECONOMIZER CONTROL W7212 . . . . . . 19
11 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . . . . 19
12 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 FRONT VIEW DIMENSIONS 15, 17.5, 20 & 25 TON . . . . 26
14 REAR VIEW DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . 27
15 UNIT CLEARANCES AND RAIN HOOD DIMENSIONS . . 28
16 ALTITUDE/TEMPERATURE CONVERSION FACTOR . . 30
17 CHARGING CHART - 15 TON . . . . . . . . . . . . . . . . . . . . . 39
18 CHARGING CHART - 17.5 TON . . . . . . . . . . . . . . . . . . . . 39
19 CHARGING CHART - 20 TON . . . . . . . . . . . . . . . . . . . . . 40
20 CHARGING CHART - 25 TON . . . . . . . . . . . . . . . . . . . . . 40
21 BELT ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
22 PRESSURE DROP ACROSS A DRY INDOOR COIL VS
SUPPLY AIR CFM FOR ALL UNIT TONNAGES . . . . . . . 42
23 GAS VALVE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
24 GAS VALVE AND CONTROLS . . . . . . . . . . . . . . . . . . . . . 49
25 TYPICAL GAS VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . 50
26 PROPER FLAME ADJUSTMENT . . . . . . . . . . . . . . . . . . . 51
27 TYPICAL FLAME APPEARANCE . . . . . . . . . . . . . . . . . . . 51
28 UNIT CONTROL BOARD . . . . . . . . . . . . . . . . . . . . . . . . . 61
LIST OF TABLES
Tbl. # Pg. #
1 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . 8
2 CONTROL WIRE SIZES. . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 ELECTRIC HEAT APPLICATION DATA . . . . . . . . . . . . . 13
4 GAS HEAT APPLICATION DATA. . . . . . . . . . . . . . . . . . . 14
5 PIPE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . . . . 20
7 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8 DJ ELECTRICAL DATA WITHOUT POWERED
CONVENIENCE OUTLET. . . . . . . . . . . . . . . . . . . . . . . . . 22
9 DJ ELECTRICAL DATA WITH POWERED CONVENIENCE
OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10 ALTITUDE CORRECTION FACTORS . . . . . . . . . . . . . . . 29
11 SUPPLY AIR BLOWER PERFORMANCE (15 TON) -
COOLING ONLY 180 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
12 SUPPLY AIR BLOWER PERFORMANCE (17.5 TON) -
COOLING ONLY 210 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
13 SUPPLY AIR BLOWER PERFORMANCE (20 TON) -
COOLING ONLY 240 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
14 SUPPLY AIR BLOWER PERFORMANCE (15 TON) - GAS
HEAT 180 MBH - BOTTOM DUCT CONNECTIONS . . . . 34
15 SUPPLY AIR BLOWER PERFORMANCE (17.5 TON) - GAS
HEAT 210 MBH - BOTTOM DUCT CONNECTIONS . . . . 35
16 SUPPLY AIR BLOWER PERFORMANCE (20 TON) - GAS
HEAT 240 MBH - BOTTOM DUCT CONNECTIONS . . . . 36
17 SUPPLY AIR BLOWER PERFORMANCE (25 TON) - GAS
HEAT 300 MBH - BOTTOM DUCT CONNECTIONS . . . . 37
18 STATIC RESISTANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 38
19 POWER EXHAUST PERFORMANCE . . . . . . . . . . . . . . . 38
20 BLOWER MOTOR AND DRIVE DATA. . . . . . . . . . . . . . . 38
21 LIMIT CONTROL SETTING . . . . . . . . . . . . . . . . . . . . . . . 46
22 ELECTRIC HEAT ANTICIPATOR SETPOINTS . . . . . . . . 46
23 LIMIT CONTROL SETTING . . . . . . . . . . . . . . . . . . . . . . . 48
24 GAS HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . 49
25 GAS RATE - CUBIC FEET PER HOUR . . . . . . . . . . . . . . 52
26 UNIT CONTROL BOARD FLASH CODES. . . . . . . . . . . . 61