Optional Electric Heat; Optional Gas Heat; Gas Piping; Side Entry Gas Piping - York DL-06 Installation Manual

167791-BIM-B-0606

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.
TABLE 31: MINIMUM SUPPLY AIR CFM
Heater Unit Model Size (Nominal Tons)
-06 (6.5) -07 (7.5) -08 (8.5) -10 (10) -12 (12.5)
kW Voltage
9 1950
18 1950
208/
24 1950
230
36 1950
54 -
9 1950
18 1950
24 480 1950
36 1950
54 -
9 1950
18 1950
24 600 1950
36 1950
54 -

OPTIONAL GAS HEAT

These gas-fired heaters have aluminized-steel or optional
stainless steel, tubular heat exchangers with spark ignition.
TABLE 32: GAS APPLICATION DATA
Unit
Input (MBH) Output (MBH)
Size Opt.
10 120
-06
15 180
10 120
-07
15 180
10 120
-08
15 180
15 180
-10
20 240
15 180
-12
20 240
Unitary Products Group

Minimum Supply Air CFM

2250 2550 -
2250 2550 3000
2250 2550 3000
2250 2550 3000
- - 3000
2250 2550 -
2250 2550 3000
2250 2550 3000
2250 2550 3000
- - 3000
2250 2550 -
2250 2550 3000
2250 2550 3000
2250 2550 3000
- - 3000
Temp Rise
96 20-50
144 35-65
96 15-45
144 30-60
96 15-45
144 30-60
144 20-50
192 30-60
144 10-40
192 20-50

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should be followed in all cases unless superseded by local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.
-
3750
3750
3750
3750
-
3750
3750
3750
3750
-
3750
3750
3750
FIGURE 21 - SIDE ENTRY GAS PIPING
3750
(°F)
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
31