International comfort products R-410A Installation Instructions Manual
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International comfort products R-410A Installation Instructions Manual

International comfort products R-410A Installation Instructions Manual

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.
RAS036 − 072
Safety Labeling and Signal Words
DANGER,
WARNING,
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 3202 00
1/21/15

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  • Page 1 INSTALLATION INSTRUCTIONS R−410A Single Package Air Conditioner RAS036 − 072 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 signal words DANGER,...
  • Page 2 FIGURE 1 Base Unit Dimensions: RAS036−72 513 01 3202 00...

  • Page 3: Table Of Contents

    IMPORTANT − READ BEFORE INSTALLING safety−alert symbol. DANGER identifies the most serious hazards which will result in serious injury or death. 1. Read and become familiar with these installation WARNING signifies a hazard which could result in serious instructions before installing this unit. injury or death.

  • Page 4: Step 2 - Plan For Sequence Of Unit Installation

    around and above unit as specified in unit drawings. See Unit may be installed directly on wood flooring or on Class Fig. 2. A, B, or C roof−covering material when roof curb is used. Do not install unit in an indoor location. Do not locate air Service Clearance Dimensional Drawing FIGURE 2 inlets near exhaust vents or other sources of contaminated...

  • Page 5: Step 4 - Provide Unit Support

    Step 4 — Provide Unit Support NOTE:The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof Roof Curb Mount — curb as shown in Fig. 3. Improperly applied gasket can also result in air leaks and poor unit performance.
  • Page 6 Roof Curb Details FIGURE 3 D ALT ROOF CURB CONNECTOR CONTROL ACCESSORY UNIT SIZE DRAIN POWER ACCESSORY PKG. ACCY. POWER HOLE 1 -2 CRRFCURB001A01 [356] 580J [19] NPT RAS036-072 CRBTMPWR001A01 [19] NPT 04-07 2 -0 CRRFCURB002A01 [610] 1 -9 1 -4 [12.7] [12.7] [551]...

  • Page 7: Step 5 - Field Fabricate Ductwork

    If a plenum return is used on a vertical unit, the return Unit Leveling Tolerances FIGURE 4 should be ducted through the roof deck to comply with applicable fire codes. A minimum clearance is not required around ductwork. Step 6 — Rig and Place Unit Keep unit upright and do not drop.

  • Page 8: Step 7 − Convert To Horizontal And Connect Ductwork

    Positioning on Curb — Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork. Position unit on roof curb so that the following clearances Step 8 — Install Optional Outside Air Hood are maintained: 1/4 in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear, 0.0 in.
  • Page 9 4. Insert the hood divider between the hood sides. See Outdoor Air Hood Details FIGURE 9 Fig. 11 and 12. Secure hood divider with 2 screws on each hood side. The hood divider is also used as the SCREEN SEAL STRIP bottom filter rack for the aluminum filter.

  • Page 10: Step 9 − Install External Condensate Trap & Piping

    Step 9 — Install External Condensate Trap and Step 10 — Make Electrical Connections Line WARNING The unit has one -in. condensate drain connection on the end of the condensate pan and an alternate connection on ELECTRICAL SHOCK HAZARD the bottom. Unit airflow configuration does not determine Failure to follow this warning could result in personal which drain connection to use.
  • Page 11 All units − Units without Thru−Base Connections — 1. Install power wiring conduit through side panel All field wiring must comply with NEC and all local codes. openings. Install conduit between disconnect and Size wire based on MCA (Minimum Circuit Amps) on the control box.
  • Page 12 different colors with minimum of seven leads. If the Field Control Wiring Raceway FIGURE 18 thermostat does not require a 24−v source (no “C” connection required), use a thermostat cable or equivalent RACEWAY with minimum of six leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.
  • Page 13 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 DISC. SIZE DISC. SIZE CRHEATER***A00 Nom (kW) MAX FUSE MAX FUSE or HACR or HACR BRKR BRKR NONE...
  • Page 14 Table 2 − Unit Wire/Fuse or HACR Breaker Sizing Data (cont) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE MAX FUSE DISC. SIZE MAX FUSE DISC. SIZE CRHEATER***A00 (kW) or HACR or HACR BRKR BRKR NONE...
  • Page 15 Table 2 − Unit Wire/Fuse or HACR Breaker Sizing Data (cont) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE MAX FUSE DISC. SIZE MAX FUSE DISC. SIZE CRHEATER***A00 (kW) or HACR or HACR BRKR BRKR NONE...
  • Page 16 Table 2 − Unit Wire/Fuse or HACR Breaker Sizing Data (cont) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE MAX FUSE DISC. SIZE MAX FUSE DISC. SIZE CRHEATER***A00 (kW) or HACR or HACR BRKR BRKR NONE...
  • Page 17 Table 2 − Unit Wire/Fuse or HACR Breaker Sizing Data (cont) ELEC. HTR NO C.O. or UNPWR C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE MAX FUSE DISC. SIZE MAX FUSE DISC. SIZE CRHEATER***A00 (kW) or HACR or HACR BRKR BRKR NONE...

  • Page 18: Step 11 - Adjust Factory−Installed Options

    Wiring for Optional Economizer FIGURE 19 Economizer Board Step 11 — Adjust Factory−Installed Options Step 12 — Install Accessories as required Smoke Detector — Available accessories include: Roof Curb Smoke detector will be connected at the Controls Thru−base connection kit (must be installed before unit is Connections Board, terminals...
  • Page 19 UNIT 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 20 8. OPEN W1 RESTORE UNIT TO DEHUMID MODE j 9. OPEN HUMIDISTAT INPUT COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE−ENERGIZED j 10. RESTORE SETPOINTS FOR THERMOSTAT AND HUMIDISTAT Copyright 2015 International Comfort Products Lewisburg, TN 37091 USA 513 01 3202 00...

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