Lennox International Inc. Heating System Zone Control Panel Uživatelský manuál stáhnout pdf

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Dallas, Texas, USA

Litho U.S.A.

504,926M

5/2004

LZP-2

ZONE CONTROL PANEL

INSTALLATION INSTRUCTIONS FOR ZONE CONTROL PANELS

USED WITH LENNOX HEATING AND COOLING EQUIPMENT

Shipping & Packing List

Package 1 of 1 contains the following:

(1) Model LZP-2 Zone Control Panel

(1) Model 88K38 Temperature Sensor

(1) Installation Instructions

(1) Owners Manual

(1) Warranty Card

Required Components (ordered separately):

24 VAC Transformer – The size of the transformer

needed is determined by the total power requirements

for the control panel, thermostats and dampers. The

control panel and thermostats together require 10VA.

The dampers require 10VA each. The size of the

transformer will depend on the greatest number of

dampers that could be energized at any given time.

NOTE – When power closed/spring open dampers

are used, at least one zone’s dampers will not be

energized during a call for heating or cooling.

Thermostats – single-stage, electronic, 24-volt

heat/cool thermostats which include a “C”

(24VAC common) terminal. Do not use mechanical

or power robbing thermostats.

Dampers – 2 or 3-wire, 24-volt dampers required.

2-wire, power closed/spring open preferred.

ZONING SYSTEM

TABLE 1 – TRANSFORMERS

Part Number Size Voltage Description

10P17 40VA 120/208/240V-24V

10P87 50VA 120/208/240V-24V

12P61 75VA 120/208/240V-24V

83P74 4" Square Electrical Box

FIGURE 1 – LENNOX

MODEL LZP-2 CONTROL PANEL LAYOUT

1 2 3 4 5 6 ... 11 12

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Strany 1 - ZONE CONTROL PANEL

Strany 2 - Features

TroubleshootingDETECTING HVAC SYSTEM PROBLEMSSymptom Possible SolutionPressure switch open.Consult condensing unit manual for possible cause.Compresso

Strany 3 - Installation (continued)

Page 11No power to control panel. Green “Normal Flashing”LED should be blinking, if not apply power to 24VAC inputs of control panel. Check fuse.Singl

Strany 4

Page 12B220345810006259Troubleshooting (continued)CHECKING THERMOSTAT VOLTAGESDISCHARGE AIR SENSOR CHECKOUTUsing a digital voltmeter (DVM) measure the

Strany 5 - Bypass Damper Sizing

Page 2Application• Two zones• Single-stage electric or gas furnace• Single-stage air conditioner• Multi-stage equipment can be used provided that itst

Strany 6 - Field Wiring

Page 3Installation (continued)FIGURE 3 – DISCHARGE AIR SENSOR LOCATION15"D/3WDFRONTIMPORTANT: The discharge air sensor is required.If a short or

Strany 7

Page 46. Install the thermostats. Refer to the instructionsprovided with the thermostat.Any 24-volt electronic thermostat with a “C” (24 VACcommon) te

Strany 8 - Sequence of Operation

Page 5Bypass Damper SizingWhen fewer than the maximum number of zones arecalling for heating or cooling, an excess volume of air isdelivered, and beca

Strany 9

Page 6Field WiringDIAGRAM 1 – FIELD WIRINGDIAGRAM 2 – DAMPER WIRING WITH SEPARATE TRANSFORMER

Strany 10 - Troubleshooting

Page 7Pin Jumper Settings (see Figure 5)LEDsELECTRIC/GAS: If electric heat is to be used, move thejumper to the “ELECT” position. This will turn on th

Strany 11 - Troubleshooting (continued)

Page 8A Time Delay Override (TDO) button is available on thecontrol panel to speed up the internal timer by a factorof 60 for system checkout. One sec

Strany 12

Page 9CONTINUOUS FAN OPERATIONA call for Fan from any zone will initiate the Gequipment output terminal. The normally open (NO)damper terminal at all

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