530.18-N8Y

TYPICAL CONTROL WIRING

COOLING / HEATING (24 VOLT THERMOSTAT)

COOLING / HEATING (24 VOLT ELECTRONIC THERMOSTAT)

THERMOSTAT1

 

THERMOSTAT

1

 

 

TERMINALS

 

 

 

 

 

TERMINALS

 

UNIT TERMINAL

 

UNIT TERMINAL

 

 

 

 

 

 

STRIP TB1

 

STRIP TB1

 

 

 

24 VOLT

 

 

 

 

 

ADD

 

 

 

TRANSFORMER

ADD

 

 

 

 

JUMPER

 

2

 

JUMPER

 

 

 

 

 

 

24 VOLT

 

 

 

 

 

TRANSFORMER

 

4

 

3

 

 

 

 

 

 

 

 

 

 

 

 

NOT

 

 

 

ADD

USED

4

 

 

 

 

 

 

JUMPER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TO REMOTE SENSOR

 

 

 

 

 

 

 

 

 

 

 

1 24 VOLT THERMOSTAT 2TH07701024. IF THE UNIT HAS AN ECONOMIZER,

 

 

 

 

 

 

 

 

2TH04702224 IF USED

 

 

 

 

 

 

 

 

 

REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD

1

ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE)

TO PREVENT SIMULTANEOUS OPERATION OF THE SCROLL COMPRESSOR

 

 

TO CONTROL ECONOMIZER ON SECOND STAGE OF COOLING, REMOVE JUMPER

AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE ECONOMIZER ON A

 

 

J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD.

SECOND STAGE OF COOLING OR HAVE AN ELECTRIC HEAT ACCESSORY

 

 

 

 

 

 

 

 

 

 

WITH TWO STAGES OF HEAT, USE THERMOSTAT 2TH04701024.

2

SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.

 

 

 

 

COOLING / HEATING (24 VOLT ELECTRONIC THERMOSTAT)

3

SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE

 

 

 

 

ELECTRIC HEATER.

THERMOSTAT1

4 REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR

TERMINALS

ADD

JUMPER

UNIT TERMINAL

STRIP TB1

P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY

OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE

THERMOSTAT SWITCHES TO THE SET-BACK POSITION.

1 ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).

IF THIS UNIT HAS AN ECONOMIZER, REMOVE JUMPER J1 FROM TERMINALS 8 AND

10 ON THE RELAY BOARD TO PREVENT SIMULTANEOUS OPERATION OF THE

SCROLL COMPRESSOR AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE

ECONOMIZER ON A SECOND STAGE OF COOLING, USE THERMOSTAT 2ET04700224.

24VOLT

TRANSFORMER

CAUTION: Label all wires prior to disconnection when servic- ing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

TYPICAL POWER WIRING

REFER TO ELECTRICAL DATA TABLES TO SIZE THE DISCONNECT SWITCH, WIRING & OVERCURRENT PROTECTION.

REFER TO ELECTRICAL DATA TABLES TO SIZE THE DISCONNECT SWITCH, WIRING & OVERCURRENT PROTECTION.

FIG. 2 - TYPICAL FIELD WIRING

DISCONNECT SWITCH BRACKET FOR UNITS

the current Gas Installation Codes CAN/CGA-B149.1 and .2 (in

WITH OPTIONAL BELT-DRIVE BLOWER

Canada) should be followed in all cases unless superseded by

A special bracket for mounting a field-supplied disconnect

local codes or gas company requirements. Refer to Table 3.

TABLE 3 - PIPE SIZING

 

 

 

switch is provided in each unit ordered with an optional

 

 

 

belt-drive supply air blower. The bracket is shipped inside the

 

 

 

 

 

 

 

 

 

Nominal Iron Pipe Size

 

blower compartment taped to the top of the blower housing.

Length in Feet

 

 

 

Install the bracket on the left hand side of the unit as shown in

 

1/2 in.

 

3/4 in.

1 in.

1-1/4 in.

10

132

 

278

520

1,050

Figure 9. Several existing screws at the top of the unit and one

 

screw approximately midway down from the top will be used

20

92

 

190

350

730

for mounting the bracket. Screws should be loosened only -

30

73

 

152

285

590

NOT REMOVED.

Matching holes in the bracket have

40

63

 

130

245

500

elongated keyways

allowing easy installation. Re-tighten

50

56

 

115

215

440

screws after bracket is in place to ensure panels will remain

60

50

 

105

195

400

70

46

 

96

180

370

leak tight.

 

 

 

80

43

 

90

170

350

GAS PIPING

 

 

 

90

40

 

84

160

320

Proper sizing of gas piping depends on the cubic feet per hour

100

38

 

79

150

305

of gas flow required, specific gravity of the gas and the length

Maximum capacity of pipe in cubic feet of gas per hour. (Based upon a pressure drop of 0.3

of run. “National Fuel Gas Code” Z223-1992 (in the U.S.A.), or

inch water column and 0.6 specific gravity gas).

 

 

Unitary Products Group

5

Page 5
Image 5
York D7CG 048 Disconnect Switch Bracket for Units, With Optional BELT-DRIVE Blower, Pipe Sizing, GAS Piping, Not Removed

D2CG 072, D7CG 060, D7CG 048, D7CG 036 specifications

The York D7CG 060, D7CG 048, D7CG 036, and D2CG 072 are advanced rooftop unit models designed for enhanced energy efficiency, reliability, and ease of use in commercial HVAC applications. These models are known for their robust features and technologies aimed at providing optimal indoor climate control.

The D7CG series, including the 060, 048, and 036 models, is built around a highly efficient design. They incorporate scroll compressors that operate quietly, contributing to a comfortable environment. The units are designed for high-ambient performance, enabling them to function efficiently even in extreme temperature conditions. The D7CG series also features an intelligent control system that allows for seamless integration with building management systems, optimizing energy usage and enhancing overall system performance.

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All four models are equipped with user-friendly digital controls that offer precise adjustments and monitoring capabilities. This feature allows building operators to quickly respond to changing conditions, ensuring optimal comfort for occupants while maintaining energy efficiency. Furthermore, they adhere to stringent environmental standards, incorporating low-GWP refrigerants that minimize their ecological footprint.

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