York DM120 Installation Manual Page 31
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- TROUBLESHOOTING
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264973-YIM-A-0806
Unitary Products Group 31
OPTIONAL ELECTRIC HEAT
The factory-installed heaters are wired for single point power
supply. Power supply need only be brought into the single
point terminal block.
These CSA approved heaters are located within the central
compartment of the unit with the heater elements extending
in to the supply air chamber.
Fuses are supplied, where required, by the factory. Some kW
sizes require fuses and others do not. refer to Table 31 for
minimum CFM limitations and to Tables 9 through 28 for elec-
trical data.
OPTIONAL GAS HEAT
These gas-fired heaters have aluminized-steel or optional
stainless steel, tubular heat exchangers with spark ignition.
GAS PIPING
Proper sizing of gas piping depends on the cubic feet per
hour of gas flow required, specific gravity of the gas and the
length of run. "National Fuel Gas Code" Z223.1 (in U.S.A.) or
the current Gas Installation Codes CSA-B149.1 (in Canada)
should be followed in all cases unless superseded by local
codes or gas utility requirements. Refer to the Pipe Sizing
Table 33. The heating value of the gas may differ with locality.
The value should be checked with the local gas utility.
NOTE: There may be a local gas utility requirement specify-
ing a minimum diameter for gas piping. All units
require a one-inch pipe connection at the entrance
fitting.
TABLE 31: MINIMUM SUPPLY AIR CFM
Heater Unit Model Size (Nominal Tons)
kW Voltage
078 (6.5) 090 (7.5) 102 (8.5) 120 (10) 150 (12.5)
Minimum Supply Air CFM
9
208/
230
1950 2250 2550 - -
18 1950 2250 2550 3000 3750
24 1950 2250 2550 3000 3750
36 1950 2250 2550 3000 3750
54 - - - 3000 3750
9
480
1950 2250 2550 - -
18 1950 2250 2550 3000 3750
24 1950 2250 2550 3000 3750
36 1950 2250 2550 3000 3750
54 - - - 3000 3750
9
600
1950 2250 2550 - -
18 1950 2250 2550 3000 3750
24 1950 2250 2550 3000 3750
36 1950 2250 2550 3000 3750
54 - - - 3000 3750
TABLE 32: GAS APPLICATION DATA
Unit
Input (MBH) Output (MBH)
Temp Rise
(°F)
Size Opt.
078
10 120 96 20-50
15 180 144 35-65
090
10 120 96 15-45
15 180 144 30-60
102
10 120 96 15-45
15 180 144 30-60
120
15 180 144 20-50
20 240 192 30-60
150
15 180 144 10-40
20 240 192 20-50
FIGURE 21 - SIDE ENTRY GAS PIPING
FIGURE 22 - BOTTOM ENTRY GAS PIPING
O P T I O N A L
C O I L
G U A R D
S H O W N
OPTIONAL
COIL
GUARD
SHOWN
- INSTALLATION 1
- TABLE OF CONTENTS 2
- LIST OF FIGURES 3
- LIST OF TABLES 3
- LIST OF TABLES (CONT’D) 4
- SAFETY CONSIDERATIONS 5
- INSPECTION 5
- REFERENCE 6
- RENEWAL PARTS 6
- APPROVALS 6
- 6.5-12.5 Ton York 7
- Model Number Nomenclature 7
- LIMITATIONS 9
- LOCATION 10
- FIGURE 4 - PREDATOR 10
- RIGGING AND HANDLING 11
- FIGURE 5 - UNIT 4 POINT LOAD 11
- TABLE 3: UNIT WEIGHTS 11
- TABLE 4: 4 POINT LOAD WEIGHT 11
- FIGURE 6 - UNIT 6 POINT LOAD 12
- CLEARANCES 12
- TABLE 5: 6 POINT LOAD WEIGHT 12
- See Detail 13
- CABINET SIZE 14
- DIMENSION 14
- “A” “B” “C” 14
- 50 3/4” 28 1/4 18 1/16 28 1/4 14
- 42” 27 3/4 12 1/16 27 1/2 14
- F R O N T 15
- R I G H T 15
- O P T I O N A L C O I L 16
- G U A R D 16
- 3 " M i n i m u m 16
- THERMOSTAT WIRING 17
- POWER AND CONTROL WIRING 17
- POWER WIRING DETAIL 17
- TABLE 8: CONTROL WIRE SIZES 17
- U N I T C O N T R O L 18
- B O A R D 18
- 264973-YIM-A-0806 19
- Unitary Products Group 19 19
- 20 Unitary Products Group 20
- Unitary Products Group 21 21
- 22 Unitary Products Group 22
- Unitary Products Group 23 23
- 24 Unitary Products Group 24
- Unitary Products Group 25 25
- 26 Unitary Products Group 26
- Unitary Products Group 27 27
- 28 Unitary Products Group 28
- Unitary Products Group 29 29
- TABLE 29: DM PHYSICAL DATA 30
- TABLE 30: DH PHYSICAL DATA 30
- O P T I O N A L 31
- S H O W N 31
- OPTIONS/ACCESSORIES 33
- FIRE OR EXPLOSION HAZARD 33
- ADJUSTMENTS AND INFORMATION 34
- Unitary Products Group 35 35
- BLOWER ROTATION 36
- BELT TENSION 36
- FIGURE 25 - BELT ADJUSTMENT 36
- Unitary Products Group 37 37
- 38 Unitary Products Group 38
- Unitary Products Group 39 39
- 40 Unitary Products Group 40
- Unitary Products Group 41 41
- 42 Unitary Products Group 42
- Unitary Products Group 43 43
- 44 Unitary Products Group 44
- Unitary Products Group 45 45
- 46 Unitary Products Group 46
- Unitary Products Group 47 47
- 48 Unitary Products Group 48
- Unitary Products Group 49 49
- 50 Unitary Products Group 50
- Unitary Products Group 51 51
- 52 Unitary Products Group 52
- Unitary Products Group 53 53
- 54 Unitary Products Group 54
- AIR BALANCE 56
- $LUIORZ&)0 57
- SUPPLY AIR DRIVE ADJUSTMENT 58
- OPERATION 60
- SAFETY CONTROLS 61
- COMPRESSOR PROTECTION 62
- 50” CABINET 62
- GAS HEATING OPERATION ERRORS 64
- START-UP (COOLING) 65
- START-UP (GAS HEAT) 66
- CHECKING GAS INPUT 67
- TABLE 69: GAS HEAT STAGES 67
- CHARGING THE UNIT 69
- 70 Unitary Products Group 70
- Unitary Products Group 71 71
- 72 Unitary Products Group 72
- TROUBLESHOOTING 73
- 74 Unitary Products Group 74
- Power to 75
- 76 Unitary Products Group 76
- COOLING TROUBLESHOOTING GUIDE 77
- 82 Unitary Products Group 82
- Unitary Products Group 83 83
- Unitary 5005 Norman 84
- Products York OK 84
- Group Drive 73069 84
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