Lennox International Inc LZP-2, Zone Control Panel Application, Features, Installation

Application

•Two zones

•Single-stage electric or gas furnace

•Single-stage air conditioner

•Multi-stage equipment can be used provided that it stages on it’s own internal controls

•Not applicable to heat pump systems

Features

•Adjustable high and low discharge air temperature limits

•ON/OFF duct air purge control

•LED indicators for outputs

•Time Delay Override

•2 or 3-wire damper compatibility

Installation

The above illustration shows a typical two zone control system.

•Install the control panel indoors only.

•Do not install the control panel where the tempera- ture will exceed 140°F or will drop below 32°F.

•Do not install the control panel on foundation walls, HVAC equipment or duct system where moisture may condense on the enclosure.

•Do not install the control panel in a room where it will be exposed to elevated humidity levels such as a laundry room.

1.Remove the cover. Replace the cover when installation is complete.

2.There are eight slots on the base of the enclosure (see Figure 2).

3.Use #8 screws (field supplied) to install the base.

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer, service agency or the gas supplier.

CAUTION

Electrostatic discharge can damage the control. Touch a grounded metal object before touching the circuit board, and then only touch the circuit board on the edges when handling.

D2

R3

R4

R5

R6

EQUIP.

D1

W

R2

ZONE 1

+

C2

G

24VDC

GND

5VDC

J2

Y

W

D3

R1

C1

NORMAL

D4

+

C4

G

D5

Y

FLASHING

D8

R7

G

+

D7

R8

D6

R9

(8) Mounting

Y

K1

C3

D9

D10

R

RV1

U1

RC

R12

C6

+

NO

Slots

+

R10

C5

D13

D14

C7

NC

RH

D12

R13

R14

R15

R16

R17

+

R11

RV2

J1

K4

Q1

C

D11

C9

U3

C8

K2

W

R18

RV3

D15

U4

R19

DamperZ1

R20

D16

D17

TP4

D19

ZONE 2

D18

R23

K3

SW1

U5

+C11

C10

U2

J5

Y

RV4

RV5

R21

TDO

D20

R22

+

R24

R25

R26

R27

24VAC

Y1

G

R28

C14

J3

F1

C13

R

D21

R29

R

R30

D22

D23

SPARE FUSE

C

C12

U6

R36

+

NO

C17

F2

C16

C15

K5

R31

R32

R33

R34

NC

MAIN FUSE

R35

R41

RV6

GAS

ELECT.

R37

R38

R39

R40

RV7

C

DAS

J4

R43

R44

C18

R47 R42

R45

LENNOX

PURGE

NoPURGE

W

LZP-2

HT-160

140

RV8

D24

X3785 REV. 1

CL-45

40

R46

DamperZ2

C19

C20

C21

C22

FIGURE 2 – CONTROL PANEL AND ENCLOSURE BASE

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