Carrier Z6, ZN030-105, ZW, 48ZT, Z8075-105 Gas Piping Details, 48Z Series Staged Gas Implementation

Page 56

*NPT plug is field supplied. NOTE: Follow all local codes.

Fig. 58 — Gas Piping Details

Installing Flue/Inlet Hoods — The flue and inlet hoods are shipped in a package taped to the basepan in the fan section. The flue (outlet) hoods are pre-assembled. The flue de- flector and inlet hoods require assembly.

The hoods are located on the heating section access panel as shown in Fig. 59 (sizes 030-050) or Fig. 60 (sizes 055-105). See Table 18 for a list of parts used to assemble each hood and quantities of each hood type used with each unit.

1.Remove shipping block-offs and shipping tape from all openings in the access panel.

2.Attach flue outlet hoods (see Fig. 61) to access panel us- ing screws provided. Hoods are placed over each com- bustion outlet.

3.Install flue deflector baffle inside flue deflector hood. See Fig 62 for sizes 030-050 and 075-105 (V-type deflector). See Fig. 63 for sizes 055-105 (curve-type deflector). In- stall flue deflector hood assembly over each flue outlet hood (installed in Step 2). Observe the offset mounting hole locations in the deflector hood flanges when attach- ing hood to panel (see Fig. 64). Holes in the mounting flange must be at the bottom when attached.

4.Inlet hoods are shipped unassembled and must be assem- bled on the access panel (see Fig. 65). Flanges of the hood top and sides should be placed on the inside of the access panel openings. Install hood top and sides with screws provided. Attach speed clips to screen and insert screen into bottom opening of hood. Secure with 3 screws. On large inlet hoods, attach viewport cover over opening in hood (see Fig. 66). Secure with two screws.

Supply-Air Thermistors (Staged Gas Units Only) — Supply-air thermistors are a field-installed, factory- provided component. Three supply-air thermistors are shipped with staged gas units inside the heating section. Thermistor wires must be connected to SGC in the heating section. See Table 19. The supply-air thermistors should be located in the supply duct with the following criteria:

downstream of the heat exchanger cells

equally spaced as far as possible from the heat exchanger cells

a duct location where none of the supply air thermistors are within sight of the heat exchanger cells

a duct location with good mixed supply air portion of the unit.

Table 17 — 48Z Series Staged Gas Implementation

NO. OF

 

MODEL NUMBER POSITION

 

 

POINT

 

HEAT

STAGES

3

5

 

6,7,8

10

HTSTGTYP

CAPMXSTG

 

LIMTHIHT

LIMTLOHT

SIZE

2 stages

Z

H, K, W, Y

 

030

ALL

Default=0

Default=45

 

Default=170 F

Default=160 F

Low

 

 

 

 

035

 

 

 

 

 

 

 

 

 

 

 

040

 

 

 

 

 

 

 

 

 

 

 

050

 

 

 

 

 

 

 

5 stages

Z

J, L, X, Z

 

030

ALL

Default=1

Default=20

 

Default=170 F

Default=160 F

High

 

 

 

 

035

 

 

 

 

 

 

 

 

 

 

 

040

 

 

 

 

 

 

 

 

 

 

 

050

 

 

 

 

 

 

 

 

 

H, K, W, Y

 

055

ALL

Default=1

Default=20

 

Default=135 F

Default=125 F

Low

 

 

 

 

060

 

 

 

 

 

 

 

 

 

 

 

070

 

 

 

 

 

 

 

 

 

H, K

 

075

-,A,B,C,D,E

Default=1

Default=20

 

Default=135 F

Default=125 F

 

 

 

 

 

090

 

 

 

 

 

 

 

 

 

 

 

G,H,J,K,L,M

Default=1

Default=20

 

Default=130 F

Default=120 F

 

 

 

 

 

105

 

 

 

 

 

 

 

 

 

 

 

 

 

9 stages

Z

J, L, X, Z

 

055

ALL

Default=3

Default=15

 

Default=135 F

Default=125 F

High

 

 

 

 

060

 

 

 

 

 

 

 

 

 

 

 

070

 

 

 

 

 

 

 

 

 

J, L

 

075

-,A,B,C,D,E

Default=3

Default=15

 

Default=135 F

Default=125 F

 

 

 

 

 

090

 

 

 

 

 

 

 

 

 

 

 

G,H,J,K,L,M

Default=3

Default=15

 

Default=130 F

Default=120 F

 

 

 

 

 

105

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

CAPMXSTG

Maximum Capacity per Changes

 

 

 

 

 

 

HTSTGTYP

Heat Stage Type

 

 

 

 

 

 

 

 

LIMTHIHT

Limit Switch Thermistor High Temperature

 

 

 

 

 

 

LIMTLOHT

Limit Switch Thermistor Low Temperature

 

 

 

 

 

 

56

Image 56
Contents Installation Instructions Installation Physical Data 48ZG,ZN030-050 Base UnitAlternate High-Capacity Evaporator Coil Physical Data 48ZG,ZN055-070 Base UnitPhysical Data 48ZG,ZN075-105 Base UnitOutside AIR Screens Physical Data 48Z6,Z8075-105 RETURN/EXHAUST FAN Physical Data 48ZT,ZW075-105 Operating Weights of Options and Accessories lb Power ExhaustPower Exhaust Fan Drive Data High-Capacity Power Exhaust Fan Drive Data 48ZT,ZW UnitsSupply Fan Drive Data Return/Exhaust Fan Drive Data 48Z6,Z8 UnitsRoof Curb Sizes 055-105 Roof Curb Sizes 075-105 with High-Capacity Power Exhaust Condenser Section Roof Curb Size 055 and 060 Only Condenser Section Roof Curb Size 070-105 Only Condenser END Support Gasket Location on Roof Curb 48ZT,ZW075-105 Units Rigging Label Size 055-105 Units Standard Chassis Rigging Label Size 055,060 Units Extended Chassis Weight Distribution and Center of Gravity Page 24 → Page Page A48-8451 Page Page A48-8452 A48-8453 A48-8454 Install Outdoor Hoods 48ZG,ZN,Z6,Z8 Units Outdoor Air Hood Installation Sizes Install Economizer Hoods 48ZT,ZW Units Field Wire Routing Disconnect Location Size 030-050 Units Disconnect Location 48ZG,ZN055-105 and 48Z6,Z8075-105 Units Field Power Wiring Connections Electrical Data, 48ZG,ZN030 Units MCA Mocp FLAElectrical Data, 48ZG,ZN035 Units Electrical Data, 48ZG,ZN040 Units Electrical Data, 48ZG,ZN050 Units Electrical Data, 48ZG,ZN055 Units MCA Mocp FLAElectrical Data, 48ZG,ZN060 Units Electrical Data, 48ZG,ZN070 Units 460Electrical Data 48ZG,ZN075-105 Units Electrical Data 48Z6,Z8075-105 Units Electrical Data 48ZT,ZW075-105 Units Indoor Evaporator Fan Motor Auxiliary Control Box Location Sizes Auxiliary Control Box Details Sizes Sizes 055-105 without Return FanReturn/Exhaust-Fan Shipping Brackets 48Z6 Shipping Brackets Sizes Compressor Mounting Gas Piping Details 48Z Series Staged Gas ImplementationFlue/Inlet Hood Locations, 030-060 Units Inlet Hood View Port Cover Installation Units Only SGC Thermistor Designations PointCCN Connection Approved Shielded Cables Field Control Thermostat Wiring Smoke Control ModesSpace Temperature Averaging Wiring Heat Interlock Relay Wiring Fan Status Switch Wiring Return Air Smoke Detector Wiring CCN Connections Page Copyright 2009 Carrier Corporation
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