LENNOX Furnace/Heater, Gas Manual L0806194

User Manual: LENNOX LENNOX Furnace/Heater, Gas Manual LENNOX Furnace/Heater, Gas Owner's Manual, LENNOX Furnace/Heater, Gas installation guides

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Page Count: 19

LENNOX

Industrio$ Inc.

INSTALLATIONINSTRUCTIONS

500,430M

Supersedes 500,273M

ACCESSORIES

0 • • ••• ••••••••••

INSTALLATION INsTRucTIONS FOR KL-4.5 RELAy CONTROL CENTER

I_:_SHIPPING AND PACKING LIST:

l-RL-45 relay con_ol center

1-Thermostat (if ordered)

l-The_mostat sub-base (if ordercd)

l-Magnetic starter (i._ ordered)

1-20-S Solenoid (if ordered)

Ior 2-Wire kits (if ordered)

1to 3-Au.xillary" limits with mozm_tng brackets (if ordered)

1-Wiring diagram

H-GENERAL:

This relay con_ol center can be used to interlock up to

three heating units with three blowers. System can be piped

and wired to operate in _ one of the following ways:

A-SINGLE STAGE HEATING - SINGLE STAGE COOLING

B-TWO-STAGE HF__TING - SINGLE STAGE COOLING

C-SI_4GLE STAGE HEATING - TWO-STAGE COOLING

D-TWO-STAGE HEATING - TWO-STAGE COOLING

E-S]_4GLE STAGE HEATING -TWO-STAGE COOLING WITH

CYLINDER UNLOADING

F-TWO-STAGE HEATDqG- TWO-STAGE COOLING WITH

CYLINDER UNLOADING

Be sure the correct items have been ordered_ from fl_e BiLls

of Material in the ISL'lce book_ for the system operation you

require.

The blower motor contector in the relay control center is

rated for one 1 hp or two 1/2 hp motors at 120 volts end one

2 hp or three 3/4 hp motors at 230 volts) single phase. If

3phase or larger motors are used) a magnetic starter must

be used.

III-OPERATION__ :

The heat relay is energized from the thermostat and will

energize all three ftamaces simultaneously. If _Z_aaces are

wired for two-stage operation) asecond stage heat relay kit

mu_ be installed and wired in tile relay centrol center.

The time delay blower relay is energized on first stage heat

demand and will start all blower motors _tmultaneously in

approximately 30 seconds. After end of heat dem;md)

blowers will operate for approximately 90 seconds _nd fl_en

shut off. If thermostat blower _vitc_ is placed in the "Cont."

The condensing units are energized directly from the ther-

mostat on acooling dem_d. On two-stage cooling) ugtng

two condensing unitm, the first and second Stage cooling

bulbs will operate conder_h_ units on demand. _ single

condensing unit is v_ed with an eVaporator solenoid for two-

stage cooling (cylinder tmloading)_a second stage cooling

relay must be installed and wired in the relay contcol center.

On COOl.ing demand_ with blower switch On thermostat in

"int. " positio% the blowers will be automatically energized

on first Stage call for cooling. If thermostat blower fwiW.Ya

is placed in the "Cont. " position) blowe_ will operate con-

_no_l_.

This equipment shall be installed and wired according to

local codes. Authorities having jurisdiction should be con-

gvlted before instrUction.

V-_[NSTALL GAS PIPING..

Figure 1shows asuggested method of piping these units,

This figure applies to Landmark traits only. Use same pr_-

ciple for other Lennox tmlts, howeVer, some variatior_ in

fittings may be nece_a_y.

Size pipLng in accordance wt_ local codes.

Page 1

Drene_ coupling to be used ff codes permit.

-This will give adjustment in piping makeup.

Ifcodes do not permit me of d_essercoupling,

piping m_t be cut acc_atdy to tiC.

FIGURE

/

VI-INSTALL OIL PIPING

Instructionsfor connecting the oil supply are provided In

the Oil Btumer Installation and Service Manual Bring oil

lines in either side of unitL

V_-INSTALL AUXILIARY LIMIT CONTR_

For complete protection on up-flow installations, with

multiple Luterlock, it i_ necessary 0o i1_*tall auxiliary limit

controls oa the blower of each 11nlt. T_ese limit controls

will provide protection from over hea_ag of filters or o_her

compone_ats in case of a blower failure such as brokers bel_

frozen bearings or blower mot_.

Locate and i_t_all the limit mounting bracket on the blower

housing as shown in Figure 2and 3. Locate these bracketl

Opp_t@ the mot_ and drives, Secure IL-nit conta'ols to

screws provide&

install limit on side opposite of mot0r and ]

!d#ives. Limit control should face front Of unit. J

If e_a relay kits _e ule_ install in relay control center

and wire according to wiring diagram provide&

Installrelay control center panel on aide panel of unit

shown in Figure 1 or any co_'eulent location.

_COMPLETE WIRING;

A-/a_tall thermostat (provided) in desired location and com-

phte wiring to thermostat accor_ag to wiring diagram pro-

vlded for this particular in_allatica_. Set tint stage thermo-

Stat heat anticipation at .40 amps. If second stage heating

is medt act sec_d stage heat entldpation at. 20 amp_

B-Disconnect blower motor hack from furnaces and wire to

relay control center according to l_oper diagram.

C-Complete low voltage wiring according to wiring diagram.

D-Run power supply wiring to relay control center according

_0 proper diagram. Power supply should be run lhrough a

fused disconnect switch located clo_e to relay control center.

F-Complete wiring to condensing uni_ as shown in p_per

_am.

F-RemoVe ,_qr_e nut a.udt'ape any unused w_es on the

_urnaces.

G-Remove backing from Khen-Stik wiring diagram and ap-

ply to adean smooth |udace near the unR:,

Page 2

FRONT OF UNIT

• 1-1/2" Dimension is fxom inside opening o_ blower houcl_g to center of limit c_trol.

FIGURE 2

FRONT OF UNIT

_enM0_ _ from _.___o]_ o_blow_.hOu _ to center of limit con_ol.

FIGURE 3

Page 3

RL-45 CONTROL SYSTEM

SINGL[ STJI_E H[ATING

(DUCT H£AI_RW

SINGLE STAGE COOLING

521.382 W

Uam U_S_

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JLF.AT _ATION _U'._D

' BE SKT AT O, 4 AMP.

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1cs-6521

RL-4S

CONTROL SYSTEM

SINGLE STAG[ HEATING

SINGLE STAGE COOLING

521,383 W

VOLTAGE IN_TALLH_ AT FACTO_f

LO_ VOLTAGE _'TALLE_ AT FACTORY

L_E VOLTAGE TO BI_ DUTALLKD

-- -- --_ LO_k _LTAGE TO BE _q_t'ALLI_N_ C_JdIB

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RL-4S CONTROL SYSTEM

TWO STAGE HEATING

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SINGLE STAGE COOLING

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521.384 W

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CONTROL SYSTEM

TWO STAGE HEATING i

SINGLE STAG[ COOLING

57.1.385 W

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LINE VOLTAGE TO BE INSTALLED

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SINGLE STAGE HEATING

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TWO STAGE COOLING

521,386 W

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SINGLE STAGE HEATING

TWO STAG[ COOLING

521.387 W

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521.386 W

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CONTROl. SYSTEM

TWO STAGE HEATING

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521.389 W

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TWO STAGE COOLING

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521,390 W

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RL-4S

CONTROL SYSTEM

SINGLE STAGE HEATING

TWO STAGE COOLING (CYLINDER UNLOADING)

521.391W

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TWO STAGE HEATING

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SINGLE STAGE HEATING

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TWO STAGE HEATIN G

TWO STAGE COOLING

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521,397 W

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