Table of Contents
Advertisement
Quick Links
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 3
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . 7
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . 8
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . 8
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 10
Step 7 - Convert to Horizontal and Connect . . . . 11
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 11
Step 9 - Install Flue Hood . . . . . . . . . . . . . . . . . . . . 12
Step 10 - Install Gas Piping . . . . . . . . . . . . . . . . . . 13
Step 12 - Make Electrical Connections . . . . . . . . . 16
Integrated Gas Controller . . . . . . . . . . . . . . . . . . . . . 27
EconoMi$er X (Factory-Installed Option) . . . . . . . . 30
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480371-01
Installation Instructions
Page
Printed in U.S.A.
Form 48FC-16-01SI Rev. A
Single Package Rooftop with
Gas Heat/Electric Cooling
SystemVu™ Controller (Factory Option) . . . . . . . . .41
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Step 13 - Adjust Factory-Installed Options . . . . . .43
Step 14 - Install Accessories . . . . . . . . . . . . . . . . .43
Step 15 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol
. When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Pg 1
WeatherMaker
48FC**16
7-22
Replaces: New
®
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Carrier WeatherMaker 48FC 16 Series
Summary of Contents for Carrier WeatherMaker 48FC 16 Series
-
Page 1: Table Of Contents
WeatherMaker ® 48FC**16 Single Package Rooftop with Gas Heat/Electric Cooling Installation Instructions • SPECIFICATIONS CONTENTS • INPUTS Page • OUTPUTS • ENVIRONMENTAL SAFETY CONSIDERATIONS ....1 •... -
Page 2: Electrical Shock Hazard
Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. WARNING DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards CARBON-MONOXIDE POISONING HAZARD which could result in personal injury or death. CAUTION is used Failure to follow instructions could result in severe personal to identify unsafe practices, which may result in minor personal injury or death due to carbon-monoxide poisoning, if... -
Page 3: General
WARNING AVERTISSEMENT FIRE HAZARD RISQUE D'INCENDIE OU D'EXPLOSION Failure to follow this warning could result in severe personal Si les consignes de sécurité ne sont pas suivies à la lettre, cela injury and/or property damage. peut entraîner la mort, de graves blessures ou des dommages matériels. - Page 4 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Packaging Compliance 48 - Gas Heat Packaged Rooftop 0 = Standard 1 = LTL ® Model Series - WeatherMaker FC - Standard Efficiency (EcoBlue™ Technology) Electrical Options A = None C = Non-Fused Disconnect...
- Page 5 Fig. 2 — 48FC**16 Unit Dimensional Drawing...
- Page 6 Fig. 2 — 48FC**16 Unit Dimensional Drawing (cont)
-
Page 7: Installation
CLEARANCE Service with Service with Operating SURFACE Conductive Barrier Non-conductive Barrier Clearance FRONT 48 in. (1219 mm) 36 in. (914 mm) 18 in. (457 mm) LEFT 48 in. (1219 mm) 42 in. (1067 mm) 18 in. (457 mm) BACK W/O ECONOMIZER 48 in. -
Page 8: Step 2 - Plan For Sequence Of Unit Installation
Step 2 — Plan for Sequence of Unit Installation The support method used for this unit will dictate different se- quences for the steps of unit installation. For example, on curb- mounted units, some accessories must be installed on the unit be- fore the unit is placed on the curb. - Page 9 Fig. 5 — 48FC**16 Roof Curb Details...
-
Page 10: Step 6 - Rig And Place Unit
Place All Gasket in Place Before Placing Unit on Roof Curb. (914-1371) “B” 36”-54” “C” Detail “A” Duct End “A” “A” See Detail “A” DIMENSIONS MAX WEIGHT UNIT 48FC**16 2150 116.0 2945 55.5 1410 59.5 1510 NOTES: 1. Dimensions in () are in millimeters. 2. -
Page 11: Step 7 - Convert To Horizontal And Connect
Step 7 — Convert to Horizontal and Connect Unit is shipped in the vertical duct configuration. Unit without factory-installed economizer or return air smoke detector option may be field-converted to horizontal ducted configuration using accessory CRDUCTCV002A00. To convert to horizontal config- uration, remove screws from side duct opening covers and remove Remove covers. -
Page 12: Economizer And Two-Position Damper Hood
ECONOMIZER AND TWO-POSITION DAMPER HOOD SETUP Panel NOTE: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust Indoor Coil hood assembly. -
Page 13: Step 10 - Install Gas Piping
Step 10 — Install Gas Piping Installation of the gas piping must be accordance with local build- CAUTION ing codes and with applicable national codes. In U.S.A., refer to NFPA 54/ANSI Z223.1 National Fuel Gas Code (NFGC). In Can- EQUIPMENT DAMAGE ada, installation must be in accordance with the CAN/CSA Failure to follow this caution may result in equipment damage. -
Page 14: All Units
ALL UNITS ” ELECTRICAL Other hardware required to complete the installation of the gas BULKHEAD ” ELECTRICAL CONNECTOR supply line will include a manual shutoff valve, a sediment trap BULKHEAD CONNECTOR (drip leg), and a ground-joint union. A pressure regulator valve may also be required (to convert gas pressure from pounds to ”... -
Page 15: Step 11 - Install External Condensate Trap And Line
WARNING Failure to follow this warning could result in personal injury, death and/or property damage. • Connect gas pipe to unit using a backup wrench to avoid damaging gas controls. • Never purge a gas line into a combustion chamber. •... -
Page 16: Step 12 - Make Electrical Connections
Units Without Disconnect Option Minimum Pitch 1" (25 mm) Per Base Rail 10' (3m) of Line 3" (76 mm) Open Vent Disconnect See Note To Roof Drain 208/230-3-60 460-3-60 Roof 575-3-60 Curb Drain Plug NOTE: Trap should be deep enough to offset maximum unit static difference. -
Page 17: Units With Factory-Installed Non-Fused Disconnect
Fig. 28 — Conduit into Factory Option Disconnect Fig. 31 — Mounting Position for Field Disconnects (up to 100A) UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT The factory-installed optional non-fused disconnect (NFD) switch is located in a weatherproof enclosure located under the main con- trol box. -
Page 18: Units Without Factory-Installed Non-Fused Disconnect
NFD enclosure. to electrical components. Such operation would invalidate any 12. Re-install the unit front panel. applicable Carrier warranty. max voltage deviation from average voltage % Voltage = 100 x... - Page 19 Non-powered type Requires the field installation of a general-purpose 125-v 15-A circuit powered from a source elsewhere in the building. Observe Pwd-CO Fuse national and local codes when selecting wire size, fuse or breaker Switch requirements and disconnect switch size and location. Route 125-v power supply conductors into the bottom of the utility box containing the duplex receptacle.
-
Page 20: All Units
0.5” Electrical Bulkhead The 48FC**16 requires an external temperature control device. Connector This device can be a thermostat (field-supplied) or a SystemVu™ controller (available as factory-installed option for use on a Carrier Comfort Network or as a stand-alone control). ® Thermostat... -
Page 21: Humidi-Mizer® Control Connections
This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination ther- Humidistat mostat-humidistat control device such as Carrier’s Edge ® Thermidistat™ device with isolated contact set for dehumidifica- tion control. See Fig. 41 and Fig. 42. The humidistat is normally used in applications where a temperature control is already provid- ed (units with SystemVu™... -
Page 22: Typical Unit Wiring Diagrams
UCB. Refer to the installation instructions side of the unit control box. Refer to the wiring diagrams in the included with the Carrier Edge Pro Thermidistat device for unit control box when making field power wiring connections. - Page 23 Fig. 45 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 Controller...
- Page 24 Fig. 46 — Typical Control Wiring Diagram, SystemVu™ Controller...
- Page 25 Fig. 47 — Typical Power Wiring Diagram – 208/230, 460-3-60 Unit Shown...
- Page 26 Fig. 48 — Typical Power Wiring Diagram – 575-3-60 Unit Shown...
-
Page 27: Integrated Gas Controller
When the thermostat calls for heating, power is sent to W on the Integrated Gas Controller Integrated Gas Controller (IGC) board. An LED (light emitting di- This unit contains an Integrated Gas Controller (IGC) board. The ode) on the IGC board turns on and remains on during normal op- IGC control board uses a flue gas pressure switch that senses pres- eration. - Page 28 UNIT CONTROL BOARD Fig. 51 — Typical IGC Control Wiring Diagram Table 8 — IGC Board LED Alarm Codes a, b, c ACTION TAKEN BY FLASH DESCRIPTION RESET METHOD PROBABLE CAUSE CONTROL CODE Normal Operation — — — Hardware Failure No gas heating.
- Page 29 Pre-purge: Induced draft motor Ignition: Gas valve and Call for heat: starts and runs for 30 seconds at igniter energize for 2 W terminal is energized ignition speed, Speed 1 seconds Rectification: Flame sensor activates for 2 seconds after Gas valve and igniter ignition period de-energerized Is flame...
-
Page 30: Economi$Er X (Factory-Installed Option)
User Interface EconoMi$er X (Factory-Installed Option) Provides status for normal operation, setup parameters, checkout PRODUCT DESCRIPTION tests, and alarm and error conditions with a 2-line 16 character The EconoMi$er X system is an expandable economizer control ® LCD display and four button keypad. system, which includes a W7220 economizer module (controller) Electrical with an LCD and keypad (see Fig. -
Page 31: Economizer Module Wiring Details
Storage Temperature: Table 10 — Economizer Module - Right Hand –40°F to 150°F (–40°C to 65°C) Terminal Blocks Shipping Temperature: LABEL TYPE DESCRIPTION –40°F to 150°F (–40°C to 65°C) Top Right Terminal Blocks Relative Humidity: AUX2 I 24 vac IN The first terminal is not used. -
Page 32: Co2 Sensor Wiring
To use the keypad when working with menus: Table 11 — HH57AC081 Sensor Wiring Terminations • Press the ▲ (Up arrow) button to move to the previous menu. TERMINAL TYPE DESCRIPTION • Press the ▼ (Down arrow) button to move to the next NUMBER LABEL menu. -
Page 33: Setup And Configuration
SETUP AND CONFIGURATION IMPORTANT: Table 13 illustrates the complete hierarchy. Before being placed into service, the W7220 economizer module Your menu parameters may be different depending on must be setup and configured for the installed system. your configuration. For example, if you do not have a DCV (CO ) sensor, then IMPORTANT: During setup, the economizer module is none of the DCV parameters appear and only MIN POS will... - Page 34 Table 13 — W7220 Menu Structure PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT FIRST STAGE COOLING DEMAND (Y1–IN) ECONO AVAIL YES/NO YES = economizing available; the system can use outside air for free cooling when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO YES = outside air being used for 1 stage cooling...
- Page 35 Table 13 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT MECH COOL ON Displays stage of mechanical cooling that is active. 0, 1, or 2 HEAT STAGES ON Displays the stage of heat pump heating that is active. STATUS SUPPLY FAN SPEED (cont)
- Page 36 Table 13 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT 0°F to 50°F ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR ERV OAT SP 32°F (–18°C to 10°C); TEMPERATURE SETPOINT increment by 1°F Only displayed when AUX1 O = ERV Exhaust fan set point for single speed units.
- Page 37 Table 13 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT COOLING STAGE 3 DELAY 0 min, 5 min, Delay after stage 2 cool has been active. Turns on second stage of 15 min, then cooling when economizer is first stage and mechanical cooling is STG3 DLY 2.0h...
- Page 38 Table 13 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT DISCHARGE AIR S-BUS SENSOR ERROR DA SYLK T ERR Discharge air sensor has failed or become disconnected - check wiring then replace sensor if the alarm continues. OUTSIDE AIR TEMPERATURE SENSOR ERROR OA SENS T ERR Outdoor air temperature sensor has failed or become disconnected...
-
Page 39: Standard Or Single Speed Fan Operation
STANDARD OR SINGLE SPEED FAN OPERATION The W (heating mode) is not controlled by the W7220 but it re- quires the status to know where to position the OA damper for FAN TYPE = 1 SPEED is not used on 48FC**16 units. minimum position for the fan speed. -
Page 40: 2Sp H/C (2 Speed Heat/Cool) Speed Fan Operation
2SP H/C (2 SPEED HEAT/COOL) SPEED FAN OPERATION Refer to Table 16 for ENTH CURVE set point values. The W7220 calculates the enthalpy and dew point using the OA FAN TYPE = 2SP H/C is not used on 48FC**16 units temperature and humidity input from the OA enthalpy sensor. -
Page 41: Checkout
CHECKOUT TROUBLESHOOTING Inspect all wiring connections at the economizer module’s termi- Alarms nals, and verify compliance with the installation wiring diagrams. The economizer module provides alarm messages that display on For checkout, review the Status of each configured parameter and the 2-line LCD. -
Page 42: Smoke Detectors
ADDITIONAL APPLICATION DATA Smoke Detectors Smoke detectors are available as factory-installed options on Refer to the application data sheet titled “Factory-Installed Smoke 48FC models. Smoke detectors may be specified for supply air Detector, for Small and Medium Rooftop Units 2 to 25 Tons” for only, for return air without or with economizer, or in combination discussions on additional control features of these smoke detectors of supply air and return air. -
Page 43: Step 13 - Adjust Factory-Installed Options
Step 13 — Adjust Factory-Installed Options SMOKE DETECTORS Smoke detector(s) will be connected at the Unit Control Board (UCB), at terminals marked “Smoke Shutdown.” ECONOMI$ER X OCCUPANCY SWITCH If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoc- cupied sequence) at terminals marked OCCUPANCY. -
Page 44: Units With Systemvu™ Controls
ESP in. wg Factory Setting: Calculator 9.0 V 3000 Field Setting: 3250 Record field setting here 3500 3750 4000 Switch Range: 4250 4500 4.1 - 7.5 4750 10.0 6.9 - 8.7 5000 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential. - Page 45 ESP in. wg Calculator 1250 1348 1441 1528 1610 1688 1762 1832 1899 1963 3000 1336 1428 1515 1598 1677 1753 1824 1893 1959 2021 3250 1423 1509 1591 1670 1746 1819 1888 1955 2020 2081 3500 1510 1591 1669 1744 1817 1887...
- Page 46 © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480371-01 Printed in U.S.A. Form 48FC-16-01SI Rev. A Pg 46 7-22 Replaces: New...
-
Page 47: Start-Up Checklist
START-UP CHECKLIST — 48FC PACKAGED ROOFTOP UNITS WITH GAS HEAT AND ELECTRIC COOLING (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation Instruction document. -
Page 48: Humidi-Mizer
9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____ 10. Restore set-points for thermostat and humidistat (Y/N) _____ © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Need help?
Do you have a question about the WeatherMaker 48FC 16 Series and is the answer not in the manual?
Questions and answers