International comfort products RAH150 Installation Instructions Manual
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International comfort products RAH150 Installation Instructions Manual

International comfort products RAH150 Installation Instructions Manual

R−410a single package air conditioner
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INSTALLATION INSTRUCTIONS
R−410A Single Package Air Conditioner
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The
signal
words
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manuals that may
apply to the product.
DANGER − Immediate hazards which will result in
severe personal injury or death.
WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury and/or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF posi-
tion. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
WARNING
!
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could cause personal
injury or death.
Relieve pressure and recover all refrigerant before
system repair or final unit disposal.
Wear safety glasses and gloves when handling
refrigerants. Keep torches and other ignitions
sources away from refrigerants and oils.
RAH150
Safety Labeling and Signal Words
DANGER,
WARNING,
Specifications subject to change without notice.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
WARNING
WARNING
!
The signal word CAUTION is used throughout this
manual in the following manner:
CAUTION
!
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal in-
jury
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing and
gloves when handling parts.
WARNING
!
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
R−410A refrigerant systems operate at higher
pressures than standard R−22 systems. Do not
use R−22 service equipment or components on
R−410A refrigerant equipment.
513 01 3609 00
1/29/15

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  • Page 1 INSTALLATION INSTRUCTIONS R−410A Single Package Air Conditioner RAH150 These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals The signal word WARNING is used throughout this...

  • Page 2: Table Of Contents

    IMPORTANT − READ BEFORE INSTALLING hazards which will result in serious injury or death. WARNING signifies a hazard which could result in serious injury or death. 1. Read and become familiar with these installation CAUTION is used to identify unsafe practices which may result instructions before installing this unit.
  • Page 3 FIGURE 1 Unit Dimensional Drawing 513 01 3609 00 Specifications subject to change without notice.
  • Page 4 Fig. 1 − Unit Dimensional Drawing (cont.) 513 01 3609 00 Specifications subject to change without notice.

  • Page 5: Jobsite Survey

    1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installation requirements. Table 1—Operating Weights 2. Determine unit location (from project plans) or select unit loca- RAH150 tion. 3. Check for possible overhead obstructions which may interfere COMPONENT UNITS LB (KG) with unit lifting or rigging.

  • Page 6: Step 3 - Inspect Unit

    unit before the unit is placed on the curb. Review the following for Curb should be level. This is necessary for unit drain to function recommended sequences for installation steps. properly. Unit leveling tolerances are show in Fig. 4. Refer to Accessory Roof Curb Installation Instructions for additional Curb−mounted installation —...
  • Page 7 FIGURE 4 Roof Curb Details 513 01 3609 00 Specifications subject to change without notice.

  • Page 8: Step 6 - Rig And Place Unit

    “B” “C” DETAIL “A” DUCT END “A” SEE DETAIL “A” DIMENSIONS MAX WEIGHT UNIT RAH150 2105 116.0 2945 1575 59.5 1510 NOTES: 1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used. 2. Dimensions in ( ) are in millimeters.

  • Page 9: Step 8 - Install Outside Air Hood

    configuration, remove screws from side duct opening covers and 2. To gain access to the hood, remove the filter access panel. remove covers. (See Fig. 8.) 3. Locate the (2) screws holding the metal tray to the basepan Discard supply duct cover.
  • Page 10 FIGURE 10 Damper Assembly Hood Parts Plastic Tie Wrap Qty (2) Screws for Metal Tray Qty (2) Economizer Hood and Two−Position Hood — FIGURE 12 Economizer Hood Construction NOTE:If the power exhaust accessory is to be installed on the unit, PANEL the hood shipped with the unit will not be used and must be discarded.

  • Page 11: Step 9 − Install External Condensate Trap &Piping

    FIGURE 13 Economizer Filter Installation FIGURE 15 Condensate Drain Piping Details MINIMUM PITCH 1” (25mm) PER BASE RAIL 10’ (3m) OF LINE 2˝ (51) MIN OPEN DIVIDER VENT OUTSIDE TO ROOF HOOD SEE NOTE DRAIN CLEANABLE ALUMINUM FILTER ROOF CURB DRAIN PLUG BAROMETRIC FILTER...
  • Page 12 FIGURE 19 Mounting Position for Field Disconnects FIGURE 16 Conduit in Factory Option Disconnect (over 100A) FIGURE 17 Conduit into Control Box FIGURE 20 Mounting Position for Field disconnects (up to 100A) FIGURE 18 Conduit into Single Point Box All units except 208/230-v units are factory wired for the voltage shown on the nameplate.

  • Page 13: Fire Hazard

    FIGURE 22 Power Wiring Connections WARNING Units Without Disconnect Option FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction. Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire. (See Fig. 21.) Disconnect FIGURE 21 Disconnect Switch and Unit...
  • Page 14 FIGURE 24 Weatherproof Cover Installation FIGURE 23 Convenience Outlet Location COVER – WHILE-IN-USE RECEPTACLE WEATHERPROOF NOT INCLUDED Pwd-CO Fuse Switch Pwd-CO Transformer BASE PLATE FOR Convenience GFCI RECEPTACLE Outlet GFCI Factory−Option Thru−Base Connections (Electrical Connections)— Disconnect This service connection kit consists of a −in electrical bulkhead Access Panel connector and a 1...
  • Page 15 Units without Thru−Base Connections — Field Control Wiring Raceway FIGURE 27 1. Install power wiring conduit through side panel openings. Install conduit between disconnect and control box. RACEWAY 2. Install power lines to terminal connections as shown in Fig. 29. Field Control Wiring —...

  • Page 16: Single Point Boxes

    Electric Heaters CAUTION RAH units may be equipped with field−installed accessory electric heaters. The heaters are modular in design, with heater frames UNIT DAMAGE HAZARD holding open coil resistance wires strung through ceramic Failure to follow this caution may result in equipment damage. insulators, line−break limit switches and a control contactor.

  • Page 17: Smoke Detector Locations

    Air and Return Air. Return Air smoke detectors are arranged for FIGURE 32 Smoke Detector Sensor vertical return configurations only. All components necessary for operation are factory−provided and mounted. The unit is factory−configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.
  • Page 18 Completing Installation of Return Air Smoke Sensor: FIGURE 33 Typical Supply Air Smoke Detector Sensor Location 1. Unscrew the two screws holding the Return Air Sensor detect- or plate. See Fig. 35. Save the screws. 2. Remove the Return Air Sensor and its detector plate. 3.
  • Page 19 Hot Gas ReHeat Connections Hot Gas ReHeat – Space RH Controller — The Hot Gas ReHeat dehumidification system requires a field−supplied and −installed space relative humidity control device. This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination thermostat−humidistat control device with isolated contact set for dehumidification control.
  • Page 20 C150021 FIGURE 39 −Typical Hot Gas ReHeat Adaptive Dehumidification System Humidistat Wiring THERMIDISTAT THERMOSTAT O/W2/B SRTN FIOP *Connection not required. C09298 FIGURE 40 −Typical Rooftop Unit with Hot Gas ReHeat Adaptive Dehumidification System 513 01 3609 00 Specifications subject to change without notice.
  • Page 21 Table 2—Unit Wire/Fuse or HACR Breaker Sizing Data ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE CRHEATER DISC. SIZE DISC. SIZE MAX FUSE or MAX FUSE or ***A00 (kW) HACR BRKR HACR BRKR NONE 57/57 70/70...
  • Page 22 Table 2 − Unit Wire/Fuse or HACR Breaker Sizing Data − Single Speed Indoor Fan Motor (cont.) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE CRHEATER DISC. SIZE DISC. SIZE MAX FUSE or MAX FUSE or ***A00 (kW)
  • Page 23 Table 3—Unit Wire/Fuse or HACR Breaker Sizing Data − Two Speed Indoor Fan Motor ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE CRHEATER MAX FUSE DISC. SIZE MAX FUSE DISC. SIZE ***A00 (kW) or HACR or HACR...
  • Page 24 Table 3 − Unit Wire/Fuse or HACR Breaker Sizing Data − Two Speed Indoor Fan Motor (cont.) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE CRHEATER DISC. SIZE DISC. SIZE MAX FUSE or MAX FUSE or ***A00 (kW)
  • Page 25 Legend and Notes for Table 2 LEGEND: Example: Supply voltage is 230‐3‐60 BRKR - Circuit breaker AB = 224 v - Convenience outlet BC = 231 v DISC - Disconnect AC = 226 v - Full load amps - Indoor fan motor - Locked rotor amps (224 + 231 + 226) Average Voltage =...

  • Page 26: Step 11 - Adjust Factory−Installed Options

    Step 11 — Adjust Factory−Installed Options Step 12 — Install Accessories Smoke Detectors — Available accessories include: Smoke detector(s) will be connected at the Central Terminal Board Roof Curb (must be installed before unit) (CTB, at terminals marked “Smoke Shutdown”. Remove jumper JMP Thru−base connection kit (must be installed before unit is set on 3 when ready to energize unit.

  • Page 27: Pre-Start-Up

    START-UP CHECKLIST (Remove and Store in Job File) MODEL NO.: SERIAL NO.: PRE-START-UP j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT j VERIFY INSTALLATION OF OUTDOOR AIR HOOD j VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS j VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT j CHECK THAT INDOOR−AIR FILTERS ARE CLEAN AND IN PLACE...
  • Page 28 COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE−ENERGIZED j 10. RESTORE SETPOINTS FOR THERMOSTAT AND HUMIDISTAT REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS Copyright 2015 International Comfort Products Lewisburg, TN 37091 USA 513 01 3609 00 Specifications subject to change without notice.

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