Carrier 48EZ(N)-A Especificações descarregar pdf (Página 11)

Table 5 - Single-Stage Kit Contents

ITEM

Installation Instructions

Propane Gas Orifice#50*

Propane Gas Orifice#51 *

Propane Gas Orifice#52*

Propane Gas Orifice#53*

Propane Gas Orifice#54*

Propane Gas Orifice#56*

Regulator Spring (92-0659)

Pressure Switch

90° Elbow, 1/8 in. NPT

Nipple, 1/8 in. NPT x 2 in. (51 mm)

Close Pipe Nipple, 1/8 in. NPT x 3/4 in. (19 mm)

Wire Harness

Propane Conversion Label (Rating Plate)

Propane Conversion Label (Installer Responsibility)

Propane Conversion Warning Label (Gas Valve)

• Referto Table 4to determine the correct orifice to use.

PART NO. QUANTITY

IIK-CPLPCONV-15 1

LH32RF070 3

LH32RF067 3

LH32RF065 3

LH32RF060 3

LH32RF055 3

LH32RF047 3

EF39ZW023 1

HK02LB008 1

CA05RA001 2

CA01CA010 1

CA01CA001 2

48DU400080 1

48VL500285 1

48VL500286 1

48DU500076 1

SINGLE-STAGE KIT INTRODUCTION

These instructions cover the installation of a propane gas

conversion kit on models 48ES "1" series or later (Examples:

48ES-060130311, 48ES060130511, 48ES-060130611),

48ES-A, 48ESNA, 48EZ "1" series or later (Examples:

48EZ-060130311, 48EZ-060130511, 48EZ-060130611),

48EZ-A, 48EZNA, 48VG (460 VAC models), 48VL, 48VT,

574D "B" series or later (Examples 574DNW060130NB,

574DPW060130NB, 574DEW060130NB), 574D*WA, 577C,

577E (460 VAC models), 674D "B' series or later (Examples:

674DNW060130NB, 674DPW060130NB, 674DEW060130NB),

674D*WA, 677C and all PY3G except "B" series (Example:

PY3GNA060115AB).

DESCRIPTION AND USAGE

This single-stage kit is applicable to units with heating inputs from

40,000 to 130,000 Btu/hr installed at high altitudes from 2001 fl

(610m) to 6000 ft. (1829 m). They cannot be used for standard

altitude installation. Standard altitude conversion (0-2001 fl)

(0-610 m) must use kit CPLPCONV013B00.

SINGLE-STAGE KIT INSTALLATION

FIRE, EXPLOSION, ELECTRICAL HAZARD

Failure to follow this warning could result in personal

injury, death or property damage.

Gas supply MUST be shut off before disconnecting

electrical power and proceeding with conversion.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before installing or servicing system, always turn off main

power to system and install lockout tag. There may be

more than one disconnect switch. Lock out and tag switch

with a suitable warning label.

1. Turn off gas supply first, then power to unit.

2. Remove the control access panel from unit.

3. Disconnect the gas pipe from the gas valve.

4. Remove the screw attaching the gas manifold to the

basepan, and partially slide out the entire burner rack

assembly from unit. Save screw. The fan partition mounting

bracket may be removed for easier access to the burner

assembly. The bracket may be removed for easier access to

the burner assembly. The bracket may be removed by

removing 2 screws (located on the left side of the control

compartment on the fan partition panel) and sliding the

bracket forward, bottom first. See Fig. 2.)

5. Disconnect the gray and brown wires from the gas valve

and remove blue wires from the rollout switch.

NOTE: To locate rollout switch, see Fig. 18.

6. Disconnect orange sparker cable from the sparker.

7. Disconnect yellow flame sensor wire from the flame sensor.

8. Remove the screw securing the brown wire from the burner

assembly. Ground screw is attached to the fan partition pan-

el. Save screw.

9. Completely slide out the entire burner rack assembly from

unit.

10. Inspect the inlet of the heat exchanger tubes for presence of

V-shaped NOx baffles (see Fig. 1). If baffles are present,

they must be removed prior to converting unit for propane

gas. Using needle-nose pliers, remove NOx baffles, squeeze

sides of the baffle, if necessary, to remove from the heat

exchanger tubes.

IMPORTANT: If it is expected that this unit will be converted

back to natural gas at a later time, these baffles should be retained

for reuse. Otherwise the baffles may be discarded.

11. Using a 5/16 in. nut driver, remove the four screws securing

the manifold/gas valve assembly to the burner assembly.

Save these screws.

12. Remove the natural gas orifices from the manifold using a

9/16 in. wrench and install the correct propane gas orifices

in the manifold (See Table 4 to select correct orifice size

based on rated input. See Fig. 13 and 16 for orifice

installation).

13. Replace the manifold/gas valve assembly into the burner

assembly using the four screws saved from item 11.

14. Remove the plug on the inlet end of the gas valve using a

3/16 in. hex wrench.

15. Install the 1/8 in. NPT x 3/4 in. (19 mm) close pipe nipple

where the plug was removed (see Fig. 19). Use pipe thread

dope (field-supplied, must be certified for use with propane

gas) for all joints, making sure not to get any excess in the

pipe or valve. Next, install a 1/8 in. elbow, a 1/8 in. NPT x

3/4 in. (19 mm) close pipe nipple, 1/8 in. elbow, 1/8 in. x

NPT 2 in. (51 mm) nipple, and a low gas pressure switch as

shown in Fig. 19.

16. Remove regulator cover screw from the gas regulator (see

Fig. 12) Save regulator cover screw.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16

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