Carrier AirStream 42WKN36 Installation, Operation And Maintenance Instructions
Carrier AirStream 42WKN36 Installation, Operation And Maintenance Instructions

Carrier AirStream 42WKN36 Installation, Operation And Maintenance Instructions

Hydronic ceiling cassettes

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Installation, Operation and Maintenance
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
SPECIAL PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 2
Special Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Précautions Particulières . . . . . . . . . . . . . . . . . . . . . . 2
Hazard Intensity Levels . . . . . . . . . . . . . . . . . . . . . . . 2
Hiérarchie Des Niveaux De Risques . . . . . . . . . . . . . 2
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONTROLS DESCRIPTION . . . . . . . . . . . . . . . . . . . 10
Microprocessor Control Board . . . . . . . . . . . . . . . . 10
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
External Connections . . . . . . . . . . . . . . . . . . . . . . . . 10
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Infrared Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Self Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Receiver Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 42
Unpack Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Blank Off Pieces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Ceiling Opening Sizes . . . . . . . . . . . . . . . . . . . . . . . 42
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Step 1 - Hanger Bolts . . . . . . . . . . . . . . . . . . . . . . . 42
Step 2 - Installation Guide . . . . . . . . . . . . . . . . . . . 43
Step 3 - Condensate Piping . . . . . . . . . . . . . . . . . . 43
Step 4 - Duct Collars . . . . . . . . . . . . . . . . . . . . . . . . 43
Step 5 - Piping Installation . . . . . . . . . . . . . . . . . . . 44
Step 6 - Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Disconnect Switch . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Step 7 - Fascia Assembly . . . . . . . . . . . . . . . . . . . . 53
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420033-01
Instructions
Printed in U.S.A.
Form No. 42WKN-12SI
Hydronic Ceiling Cassettes
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Pre-Start Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Page
Control Circuit Checks . . . . . . . . . . . . . . . . . . . . . . .53
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . .55
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Fan Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Temperature Setpoint . . . . . . . . . . . . . . . . . . . . . . . .55
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . .55
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Setting Jumper Links . . . . . . . . . . . . . . . . . . . . . . . .56
Main Control Functions . . . . . . . . . . . . . . . . . . . . . . .56
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . .57
Filter Removal and Cleaning . . . . . . . . . . . . . . . . . . .57
Recommended Spares . . . . . . . . . . . . . . . . . . . . . . .57
DISASSEMBLY PROCEDURE . . . . . . . . . . . . . . . . . .57
Fan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Condensate Tray Removal . . . . . . . . . . . . . . . . . . . .58
Condensate Pump Removal . . . . . . . . . . . . . . . . . . .58
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .58
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . .61

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be hazard-
ous due to system pressure and electrical components. Only
trained and qualified service personnel should install and service
air-conditioning equipment. See Fig. 1 for Proposition 65 warning
label. To assist in installation see Table 1 for conversion factors.
Untrained personnel can perform basic maintenance such as
cleaning and replacing filters. All other operations should be per-
formed by trained service personnel. When working on air-
conditioning equipment, observe safety precautions in literature
and on tags and labels attached to the unit.
AirStream
42WKN08-36
Pg 1
8-24
Replaces: 42WKN-11SI

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Summarization of Contents

Safety Considerations
Special Precautions
Essential guidelines for safe and efficient operation, emphasizing critical areas to prevent hazards.
Hazard Intensity Levels
Defines DANGER, WARNING, CAUTION, and IMPORTANT levels for identifying potential hazards.
Controls Description
Microprocessor Control Board
Details the PCB's role in controlling unit operations and its input/output facilities.
Inputs and Outputs
Lists sensors for return air and indoor coil temperature, and outputs for fan motor, pump, and heat.
External Connections
Specifies power input and network connection details for the unit.
Infrared Receiver and Diagnostics
Describes the IR receiver, indicator lights, and the unit's self-diagnostic feature.
Pre-Installation
Unpack and Position Unit
Instructions for removing the unit from packaging, handling fascia, and selecting an installation location.
Ceiling Opening and Thermostat Positioning
Specifies ceiling cutout dimensions and recommendations for optimal thermostat placement.
Installation
Hanger Bolts and Installation Guide
Instructions for installing hanger bolts and using the installation guide for unit placement.
Condensate Piping and Duct Collars
Guidelines for connecting condensate piping and attaching duct collars to the unit.
Piping Installation and Insulation
Procedures for connecting chilled water/condensate piping and insulating them.
Wiring
Comprehensive instructions and warnings regarding electrical wiring installation and safety.
Pre-Start-Up
Pre-Start Checks
A checklist of essential checks before unit startup, covering piping, electrical, and components.
Control Circuit Checks
Procedures for verifying control circuit functionality, including fan operation and sensor checks.
Sequence of Operation
Electro-Mechanical Controls
Explains the sequence of operation for units with electro-mechanical controls.
Microprocessor Controls
Describes how the microprocessor controls unit operation based on sensor inputs.
Operation
On/Off and Fan Speeds
How to turn the unit on/off and cycle through fan speed options using the transmitter.
Modes and Temperature Setpoint
How to select operating modes and adjust the desired temperature using the transmitter.
Clock and Timer Settings
Guide for setting the clock time and start/stop times for the timer function.
Battery Replacement
Procedure for replacing batteries in the remote control, with important notes on timing.
Controls
Setting Jumper Links
Explains the purpose and location of jumper links for configuring control features.
Main Control Functions
Details indoor fan operation, temperature control, power failure recovery, and alarm conditions.
Maintenance
Maintenance Schedule
Outlines recommended maintenance tasks at 3, 6, and 12-month intervals.
Filter Removal and Cleaning
Step-by-step instructions for removing, cleaning, and reinstalling air filters.
Recommended Spares
Suggestion to keep a set of air filters on hand for necessary replacement.
Disassembly Procedure
Fan Removal
Detailed steps for removing the fan assembly from different unit sizes.
Condensate Tray Removal
Instructions for safely removing the condensate tray and its related components.
Condensate Pump Removal
Steps for disconnecting and removing the condensate pump and its mounting bracket.

Table of Contents