Manual Carrier 48 50PM C16-28 (page 8 of 188) (English)

583652

Zoom out

Zoom in

1/188

Condenser Fans and Motors

Condenser fans and motors are factory set. Refer to Condenser-Fan

Adjustment section as required.

Return−Air Filters

Check that correct filters are installed in filter tracks (see Physical

Data table in Installation Instructions). Do not operate unit without

return-air filters.

NOTE: For units with 4-in. filter option, units are shipped with

standard 2-in. filters. To install 4-in. filters, the filter spacers must

be removed.

Outdoor−Air Inlet Screens

Outdoor-air inlet screens must be in place before operating unit.

Air Baffles

Units with Humidi-MiZer option are equipped with

Motormaster control to maintain adequate discharge pressure for

proper unit operation during low ambient operation.

Field-fabricated and installed wind baffles may be required. See

Optional Humidi-MiZer Dehumidification System section.

Accessory Installation

Check to make sure that all accessories including space thermostats

and sensors have been installed and wired as required by the

instructions and unit wiring diagrams.

Orifice Change (48PG and 48PM)

This unit is factory assembled for heating operation using natural

gas at an elevation from sea level to 2000 ft.

Use accessory high altitude kit when installing this unit at an

elevation of 2000 to 7000 ft. For elevations above 7000 ft, refer to

High Altitude section to identify the correct orifice size for the

elevation. Purchase these orifices from your local Carrier dealer.

Follow instructions in accessory Installation Instructions to install

the correct orifices.

Use accessory LP (liquid propane) gas conversion kit when

converting this unit for use with LP fuel usage for elevations up to

7000 ft. For elevations above 7000 ft, refer to High Altitude

section to identify the correct orifice size for the elevation.

Purchase these orifices from your local Carrier dealer. Follow

instructions in accessory Installation Instructions to install the

correct orifices.

Gas Heat (48PG and 48PM)

Inspect the gas heat section of the unit. Verify the number of

burners match the number of heat exchanger openings and the

burner assembly is properly aligned. If the orifices were changed

out for elevation or Liquid Propane purposes, verify proper

installation. Visually inspect other components in heat section.

Verify gas pressures before turning on heat as follows:

1. Turn off field-supplied manual gas stop, located external to

unit.

2. Connect pressure gauge to supply gas tap, located on

field-supplied manual shutoff valve. (See Fig. 6.)

3. Connect pressure gauge to manifold pressure tap.

4. Turn on field-supplied manual gas stop. Enter Service Test

mode by setting Service Test→TEST to “ON” using the

Scrolling Marquee display. Temporarily install the jumper

wire between “R” and “W1” on TB1. Use the Service Test

feature to set Service Test→HEAT→HT.1 to ON (first stage

of heat) using the Scrolling Marquee.

MANUAL SHUT OFF

(FIELD SUPPLIED)

PRESSURE TAP

(1/8˝ NPT PLUG)

GAS

SUPPLY

SEDIMENT TRAP

UNION

UNIT

C09242

Fig. 6 − Field Gas Piping

5. After the unit has run for several minutes, verify the supply

gas pressure is between 5.5−in. wg to 13.0−in. wg, and the

manifold pressure is 3.50−in. wg on sizes 03−14,

3.00−in.wg on sizes 16−28 with a vertical supply or

2.95−in.wg on sizes 16−28 with a horizontal supply. If

manifold pressure must be adjusted, refer to Gas Valve

Adjustment section.

NOTE: Supply gas pressure must not exceed 13.0−in. wg.

6. Set Service Test→HEAT→HT.1 to OFF using Scrolling

Marquee.

7. Remove jumper wire if the unit will be operating under

thermostat mode. The jumper must remain if a space

temperature sensor (T-55, T-56, T-58, or System Pilot

device) will control the unit.

8. Exit Service Test mode by setting Service Test→TEST to

“OFF” using the Scrolling Marquee.

EnergyX

For units equipped with the EnergyX factory installed option, there

is an EnergyXv2 Supplement Installation Instructions in the unit’s

information packet. Follow the start up sequence and complete the

start up checklist contained in the EnergyXv2 manual to complete

unit startup.

CONTROLS QUICK SET−UP

The following information will provide a quick guide to setting up

and configuring the 48/50PG and 48/50PM series units with

ComfortLink controls. Unit controls are pre-configured at the

factory for factory-installed options. Field-installed accessories will

require configuration at start-up. Service Test is recommended for

initial start−up. Additionally, specific job requirements may require

changes to default configuration values. See the CCN and Display

parameter tables and other sections of these instructions for more

details. Refer to the Major System Components or accessory

installation instructions for specific wiring detail.

Control Set Point and Configuration Log

During start up, accessory installation, and equipment service set

points and/or configuration changes might have to be made. When

setting set points or changing configuration settings,

documentation is recommended. The Control Log starting on page

192 should be filled out and left with the unit at all times, a copy

should also be provided to the equipment owner.

Thermostat Control

Wire accessory thermostat to the corresponding R, Y1, Y2, W1,

W2, and G terminals on the field connection terminal board located

at the unit control box.

The Unit Control Type configuration, Configuration

→UNIT→U.CTL, default value is for Thermostat (2) so there is

no need to configure this item.

The Thermostat Control Type, Configuration →UNIT→T.CTL,

selects the unit response to the thermostat inputs above.

48/50PG and PM

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of Carrier 48 50PM C16-28 in the language / languages: English as an attachment in your email.

The manual is 9,71 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

Carrier 48 50PM C16-28 Manual

Product: