Optional Electric Heat; Optional Gas Heat; Gas Piping - York Predator MagnaDRY DR090 Series Installation Manual

264276-XIM-B-1208

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
into the supply air chamber.
Fuses are supplied, where required, by the factory. Some kW
sizes require fuses and other do not. Refer to Table 12 for
minimum CFM limitations and to Table 10 for electrical data.
TABLE 12: ELECTRIC HEAT MINIMUM SUPPLY AIR
IMPERIAL
HEATER UNIT MODEL SIZE, NOMINAL TONS
VOLTAGE
kW
9
18
380/415
24
36
METRIC
HEATER UNIT MODEL SIZE, NOMINAL TONS
VOLTAGE
kW
9
18
380/415
24
36

OPTIONAL GAS HEAT

These gas-fired heaters have aluminized-steel or optional
stainless steel, tubular heat exchangers with spark ignition.
TABLE 13: GAS APPLICATION DATA
Unit
Input (MBH)
Size Opt.
10 120
090
15 175
22
7.5
MINIMUM SUPPLY AIR CFM
2250
2250
2250
2250
7.5
3
MINIMUM SUPPLY AIR m /s
1.06
1.06
1.06
1.06
Output (MBH) Temp Rise (°F)
96 15-45
140 25-55

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 should be
followed in all cases unless superseded by local codes or gas
utility requirements. Refer to the Pipe Sizing Table 14. The
heating value of the gas may differ with locality. The value
should be checked with the local gas utility.
FIGURE 20 -SIDE ENTRY GAS PIPING
FIGURE 21 -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
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