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THERMOSTAT

The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer’s instructions enclosed with
thermostat for general installation procedure. Seven color
coded insulated wires (#18 AWG) should be used to connect
thermostat to unit.

POWER AND CONTROL WIRING

Field wiring to the unit must conform to provisions of the
National Electrical Code, ANSI / NFPA No. 70 (in U.S.A.),
current Canadian Electrical Code C22.1 (in Canada) and/or
local ordinances. The unit must be electrically grounded in
accordance with NEC and CEC (as specified above) and/or
local codes. Voltage tolerances which must be maintained at
the compressor terminals during starting and running
conditions are indicated on the unit Rating Plate and Table 1.
The internal wiring harness furnished with this unit is an integral
part of a ETL and CGA design certified unit. Field alteration to
comply with electrical codes should not be required.
A fused disconnect switch should be field provided for the unit.
The switch must be separate from all other circuits. Wire entry
at knockout openings require conduit fittings to comply with
NEC (in U.S.A.), CEC (in Canada) and/or local codes. Refer to
Figure 10 for installation location. If any of the wire supplied
with the unit must be replaced, replacement wire must be of
the type shown on the wiring diagram and the same minimum
gauge as the replaced wire.
Electrical line must be sized properly to carry the load. USE
COPPER CONDUCTORS ONLY. Each unit must be wired with
a separate branch circuit fed directly from the meter panel and
properly fused.
CAUTION: When connecting electrical power and control

wiring to the unit, waterproof type connectors
MUST BE USED so that water or moisture cannot
be drawn into the unit during normal operation. The
above waterproofing conditions will also apply
when installing a field-supplied disconnect switch.

Refer to Figure 5 for typical field wiring and to the appropriate
unit wiring diagram for control circuit and power wiring
information.

OPTIONAL ELECTRIC HEATERS (DCE Models)

The factory installed heaters are wired for single point power
supply. Power supply need only be brought into the single point
terminal block and thermostat wiring to the low voltage terminal
block located in the upper portion of the unit control box.
These ETL and CGA approved heaters are located within the
central compartment of the unit with the heater elements
extending into the supply air chamber. Refer to Figure 10 for
access panel location.
Fuses are supplied, where required, by the factory. Some KW
sizes require fuses and others do not. Refer to Table 1 for
minmum CFM limitations and to Table 6 for electrical data.

COMBUSTION DISCHARGE (DCG Models)

The products of combustion are discharged horizontally
through two screened (hooded) openings on the upper gas
heat access panel.

GAS PIPING (DCG Models)

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 CAN/CGA-B149.1 and .2 (in
Canada) should be followed in all cases unless superseded by
local codes or gas utility requirements. Refer to Table 3.
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 specifying

a minimum diameter for gas piping. All units require a
1 inch pipe connection at the entrance fitting.

GAS CONNECTION (DCG Models)

The gas supply line can be routed through the knockouts
located on the front of the unit or through the opening provided
in the unit’s base. Refer to Figure 10 to locate these access
openings. Typical supply piping arrangements are shown in
Figures 6 and 7. All pipe, fittings, etc. are field-supplied.
Two grommets are shipped in the blower compartment (in parts
bag taped to the blower housing) of every unit with gas heat
and should be used in the knockouts when the gas piping
enters through the front of the unit.
After the gas supply piping has been installed, the bottom
opening in the unit should be sealed to prevent water from
leaking into the building.
Gas piping recommendations:

1. A drip leg and a ground joint union must be installed in the

gas piping.

2. When required by local codes, a manual shut-off valve may

have to be installed outside of the unit.

3. Use wrought iron or steel pipe for all gas lines. Pipe

compound should be applied sparingly to male threads
only.

Input Capacity (Mbh)

Output Capacity (Mbh)

Gas

Rate

2

(Ft.

3

/Hr.)

Temp.

Rise 

°

F

At

Full Input 

3

0 To

2,000 Feet

Above

Sea Level

2,000 To

4,500 Feet

Above

Sea Level

1

0 To

2,000 Feet

Above

Sea Level

2,000 To

4,500 Feet

Above

Sea Level

1

Max.

Min.

Max.

Min.

Max.

Max.

Min.

Max.

300

150

270

135

240

213

279

20

50

400

200

360

180

320

281

372

30

60

NOTE: Heaters are shipped available for natural gas, but can be converted to
               L.P. /  Propane with Kit Model No. 1NP0418.

1

MBH rating should be reduced at the rate of 4 percent for each 1,000 feet above 4,500 feet.

2

Based on maximum input and 1075 Btu/Ft

3

.

3

The air flow must be adjusted to obtain a temperature rise within the range shown.

TABLE 2 - GAS HEAT APPLICATION DATA

FIG. 6  - EXTERNAL SUPPLY CONNECTION

EXTERNAL SHUT-OFF

Length in Feet

Nominal Iron Pipe Size

1 in.

1-1/4 in.

10
20
30
40
50
60
70
80
90

100

520
350
285
245
215
195
180
170
160
150

1,050

730
590
500
440
400
370
350
320
305

Maximum capacity of pipe in cubic feet of gas per hour. (Based upon a pressure drop of 0.3
inch water column and 0.6 specific gravity gas).

TABLE 3 - PIPE SIZING

530.18-N11Y

6

Unitary Products Group

Содержание D1CE

Страница 1: ...6 1V Propane Conversion Accessory 530 18 N6 2V High Altitude Accessory Nat Gas 530 18 N6 3V High Altitude Accessory Propane Renewal Parts Refer to the Renewal Parts Manual for complete listing of repl...

Страница 2: ...trical Data Basic Units 10 6 Electrical Data Units With Elec Heat 10 7 Supply Air Blower Performance 13 8 Static Resistances 14 9 Power Exhaust Performance 14 10 Blower Motor and Drive Data 14 11 Heat...

Страница 3: ...talled on a solid level roof curb or appropriate angle iron frame CAUTION If a unit is to be installed on a roof curb or special frame other than a YORK roof curb gasketing must be applied to all surf...

Страница 4: ...uctwork to accommodate the damper Using the holes in the hood flanges as a template drill 9 64 dia 26 drill holes into the ductwork and secure with the screws provided CAUTION If outdoor air intake wi...

Страница 5: ...FIG 5 TYPICAL FIELD WIRING Wire Size 1 AWG Gauge 22 20 19 18 16 40 120 150 190 305 Maximum Wire Length2 Feet Notes 1 Solid Class II copper wire CONTROL WIRE SIZES 530 18 N11Y Unitary Products Group 5...

Страница 6: ...ons and to Table 6 for electrical data COMBUSTION DISCHARGE DCG Models The products of combustion are discharged horizontally through two screened hooded openings on the upper gas heat access panel GA...

Страница 7: ...ediately upstream of the gas supply connection to the furnace L P UNITS TANKS AND PIPING DCG Models All gas heat units are shipped from the factory equipped for natural gas use only The unit may be co...

Страница 8: ...but do not remove the two panel latches CAUTION Extreme care must be exercised in turning both the setpoint and minimum position adjusting screws to prevent twisting them off 1 The enthalpy set point...

Страница 9: ...FIG 9 ENTHALPY SETPOINT ADJUSTMENT 530 18 N11Y Unitary Products Group 9...

Страница 10: ...breaker 2 Although these sizes are based on 75 C copper conductors aluminum wire can be used Refer to the National Electric Code in U S A or the current Canadian Electrical Code in Canada to determine...

Страница 11: ...be provided between any combustible material and the supply air ductwork for a distance of 3 feet from the unit The products of combustion must not be allowed to accumulate within a confined space an...

Страница 12: ...sheet metal covers except when the unit includes a power exhaust option The covering consists of a heavy black paper composition 3 Replace the side supply and return air compartment panels For side du...

Страница 13: ...12 2 2 0 16 6 13 9 HIGH SPEED DRIVE ACCESSORY 1118 6 0 2 3 8 8 7 4 1 8 10 3 8 6 1 3 11 9 10 0 0 7 13 6 11 4 0 2 15 4 12 9 1170 5 0 2 7 9 4 7 9 2 2 11 0 9 2 1 7 12 7 10 6 1 1 14 5 12 2 0 5 16 4 13 7 12...

Страница 14: ...pulley below 1 turn open MOTOR SPEED STATIC RESISTANCE OF RETURN DUCTWORK IWG 0 2 0 3 0 4 0 5 0 6 CFM KW CFM KW CFM KW CFM KW CFM KW HIGH 5250 0 83 4500 0 85 4200 0 88 3750 0 93 3000 0 99 MEDIUM 4900...

Страница 15: ...operate if the fan switch on the room thermostat is set in the ON position ECONOMIZER WITH DUAL ENTHALPY SENSORS The operation with the dual enthalpy sensors is identical to the single sensor except t...

Страница 16: ...and the main gas valve opened Gas flows into each of the second stage main burners and is ignited from the carryover tube flame If IC2 fails to detect a pilot flame it will continue to try for a maxi...

Страница 17: ...e these limits contact the local gas utility for corrective action MANIFOLD GAS PRESSURE ADJUSTMENT Small adjustments to the high fire gas flow may be made by turning the pressure regulator adjusting...

Страница 18: ...resistances of both the supply and the return air duct systems With this information the RPM for the supply air blower and themotor pulley adjustment turns open can bedeterminedfrom the blower perform...

Страница 19: ...and drive data CHECKING GAS INPUT NATURAL GAS 1 Turn off all other gas appliances connected to the gas meter 2 With the furnace turned on measure the time needed for one revolution of the hand on the...

Страница 20: ...tructed by overhanging structures of shrubs GAS HEATING UNITS BURNER PILOT Periodically at least annually at the beginning of each heating season make a visual check of the pilot and main burner flame...

Страница 21: ...go to Step f If it does not check to see if line voltage is being supplied to the contacts of the contactor 3M and if the contactor is pulled in Check for loose wiring b If contactor 3M is pulled in p...

Страница 22: ...ILOT CHECKOUT b Check all wiring between the ignitor control and the gas valve Check to make sure the ground connections are intact c If the wiring is intact check for 24 volts across terminals PV and...

Страница 23: ...530 18 N11Y Unitary Products Group 23...

Страница 24: ...ary Products Group P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed in U S A Copyright by York International Corporation 1995 All Rights Reserved Code SBY 530 18...

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