International comfort products RGH072 Installation Instructions Manual
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International comfort products RGH072 Installation Instructions Manual

R--410a single package gas heating / electric cooling
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INSTALLATION INSTRUCTIONS
R- -410A Single Package Gas Heating /
NOTE: Read the entire instruction manual before starting
the installation

TABLE OF CONTENTS

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(In Lieu of Curb or Slab Mount)
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Electric Cooling
RGH072 - - 120
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  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS R- -410A Single Package Gas Heating / Electric Cooling RGH072 - - 120 NOTE: Read the entire instruction manual before starting the installation TABLE OF CONTENTS SAFETY CONSIDERATIONS ....

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical ELECTRICAL SHOCK HAZARD shock or other conditions which may cause personal Failure to follow this warning could cause personal injury or property damage. Consult a qualified installer, injury or death.

  • Page 3: Rated Indoor Airflow (Cfm)

    Rated Indoor Airflow (cfm) Model Number Full Load Airflow (cfm) RGH072 2400 The table to the right lists the rated indoor airflow used RGH073 2400 for the AHRI efficiency rating for the units covered in this RGH090 3000 document. RGH102...
  • Page 4 Fig. 1 - - RGH 072- - 102 Unit Dimensional Drawing, sheet 1 of 2 509 01 3808 00 Specifications are subject to change without notice.
  • Page 5 Fig. 1 - - RGH 072- - 102 Unit Dimensional Drawing, sheet 2 of 2 509 01 3808 00 Specifications are subject to change without notice.
  • Page 6 Fig. 2 - - RGH 110- - 120 Unit Dimensional Drawing, sheet 1 of 2 509 01 3808 00 Specifications are subject to change without notice.
  • Page 7 Fig. 2 - - RGH 110- - 120 Unit Dimensional Drawing, sheet 2 of 2 509 01 3808 00 Specifications are subject to change without notice.

  • Page 8: Installation

    C08337 LOCATION DIMENSION CONDITION 48--- in (1219 mm) Unit disconnect is mounted on panel 18--- in (457 mm) No disconnect, convenience outlet option 18--- in (457) mm Recommended service clearance 12--- in (305 mm) Minimum clearance 42--- in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36--- in (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)

  • Page 9: Roof Mount

    from any adjacent building (or per local code). Locate the Rig and place unit flue assembly at least 10 ft (3.05 m) from an adjacent Convert unit to side duct connection arrangement unit’s fresh air intake hood if within 3 ft (0.91 m) of same Install field- - fabricated ductwork at unit duct openings elevation (or per local code).
  • Page 10 C13311 Fig. 4 - - Roof Curb Details 509 01 3808 00 Specifications are subject to change without notice.

  • Page 11: Slab Mount (Horizontal Units Only)

    Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes. Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier. If a plenum return is used on a vertical unit, the return MAXIMUM ALLOWABLE should be ducted through the roof deck to comply with DIFFERENCE IN.

  • Page 12: Positioning On Curb

    PLACE ALL SEAL STRIP IN PLACE REQUIRED (914-1371) BEFORE PLACING UNIT ON ROOF CURB. SPREADER BARS DUCT END "C" "A" SEE DETAIL "A" C11292 DIMENSIONS MAX WEIGHT UNIT RGH072/073 1200 88.0 2235 44.0 1120 41.5 1055 RGH090 1420 88.0 2235 44.0 1120 49.5...

  • Page 13: Step 8 - Install Outside Air Hood

    Field- - supplied flanges should be attached to horizontal 6. Caulk the ends of the joint between the unit top panel duct openings and all ductwork should be secured to the and the hood top. flanges. Insulate and weatherproof all external ductwork, 7.

  • Page 14: Step 9 - Install Flue Hood

    (498 Pa) NOTE--- LOW FIRE, 1.7 in. wg (423 Pa), applies to the following units only: RGH072*D/S, RGH073*D/S, RGH090*D/S, and RGH102*D/S Manifold pressure for LP fuel use must be adjusted to specified range. Follow instructions in the accessory kit to make initial readjustment.

  • Page 15: Optional Thru- - Base Connections (Gas Connections)

    CAUTION LOW VOLTAGE CONDUIT EQUIPMENT DAMAGE HAZARD CONNECTOR Failure to follow this caution may result in damage to equipment. When connecting the gas line to the unit gas valve, the installer MUST use a backup wrench to prevent HIGH VOLTAGE damage to the valve.
  • Page 16 When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFPA 54/ANSI Z223.1 NFGC latest edition (in Canada, CAN/CSA 9” (229mm) min B149.1). In the absence of local building codes, adhere to the following pertinent recommendations: Thru-Curb Adapter 1.

  • Page 17: Step 11 - Install External Condensate Trap And Line

    MINIMUM PITCH 1” (25mm) PER BASE RAIL 10’ (3m) OF LINE 3˝ (76mm) OPEN VENT TO ROOF SEE NOTE DRAIN BURNER ROOF ORIFICE CURB DRAIN PLUG NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102mm) trap is recommended. C11291 A93059 Fig.

  • Page 18: Units With Factory- - Installed Non- - Fused Disconnect

    Units Without Disconnect Option Equip GR Lug ELECTRIC DISCONNECT SWITCH COPPER WIRE ONLY Disconnect ALUMINUM WIRE Ground A93033 (GR) Fig. 24 - - Disconnect Switch and Unit 208/230-3-60 460-3-60 575-3-60 Units With Factory- - Installed Non- - Fused Disconnect — The factory- - installed option non- - fused disconnect (NFD) Units With Disconnect Option switch is located in a weatherproof enclosure located...

  • Page 19: Units Without Factory- - Installed

    9. Install the handle on to the painted cover horizontally Voltage to compressor terminals during operation must be with the red arrow pointing to the left. within voltage range indicated on unit nameplate. See Tables 6 and 7. On 3- - phase units, voltages between 10.

  • Page 20: Optional Thru- - Base Connections

    DISCONNECT POWER UNIT CONVENIENCE OUTLET. LOCK- - OUT AND TAG- - OUT ALL POWER. Remove the blank cover plate at the convenience outlet; discard the blank cover. Loosen the two screws at the GFCI duplex outlet, until approximately -in (13 mm) under screw heads are exposed.

  • Page 21: Units Without Thru- - Base Connections

    condenser section. The - - in bulkhead connector enables For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated the low- - voltage control wires to pass through the basepan. wire (35_C minimum). For over 75 ft. (23 m), use no. 14 - - in electrical bulkhead connector allows the AWG insulated wire (35_C minimum).

  • Page 22: Heat Anticipator Settings

    NOTE: If thru- - the- - bottom connections accessory is used, To connect a field- - supplied humidistat: refer to the accessory installation instructions for 1. Route the humidistat 2- - conductor cable (field- - supplied) information on routing power and control wiring. through the hole provided in the unit corner post.
  • Page 23 C160109 Fig. 33 - - Typical Humidistat Wiring for Hot Gas Re- - Heat Dehumidification System THERMIDISTAT Unit CTB THERMOSTAT O/W2/B SRTN Hot Gas Re-Heat FIOP *Connection not required. C09298I Fig. 34 - - Thermostat Device Connections for RGH Unit with Hot Gas Re- - Heat Dehumidification System 509 01 3808 00 Specifications are subject to change without notice.

  • Page 24: Smoke Detectors

    Smoke Detectors Return Air Smoke Detector (as shipped) Smoke detectors are available as factory- - installed options on RGH models. Smoke detectors may be specified for Supply Air only without or with economizer. All components necessary for operation are factory- - provided and mounted. The unit is factory- - configured for immediate smoke detector shutdown operation;...

  • Page 25: Step 13 - Adjust Factory- -Installed Options

    Step 13 — Adjust Factory- -Installed Options Step 14 — Install Accessories Smoke Detectors — Available accessories include: Roof Curb Smoke detector(s) will be connected at the Controls Thru- - base connection kit (must be installed before unit Connections Board, terminals marked “Smoke is set on curb)
  • Page 26 HACR BRKR 36/36 50/50 36/36 40/40 50/50 40/40 208/230--- 3--- 60 HIGH 42/41 60/50 42/41 45/44 60/60 46/45 RGH072 460--- 3--- 60 (1---stage cool) HIGH 575--- 3--- 60 HIGH 34/34 50/50 33/33 38/37 50/50 38/37 208/230--- 3--- 60 HIGH 39/38...
  • Page 27 HACR BRKR 41/41 60/60 41/41 45/45 60/60 46/45 208/230--- 3--- 60 HIGH 46/45 60/60 47/46 50/49 60/60 52/50 RGH072 460--- 3--- 60 (1---stage cool) HIGH 575--- 3--- 60 HIGH 39/38 50/50 39/39 42/42 50/50 43/43 208/230--- 3--- 60 HIGH 44/43...
  • Page 28 Table 7 – Unit Wire/Fuse or HACR Breaker Sizing Data with Two Speed Indoor Fan Motor NO C.O. or UNPWR C.O. NO P.E. w/ P.E. (pwrd fr/ unit) UNIT NOM.V---Ph---Hz TYPE DISC. SIZE DISC. SIZE MAX FUSE or MAX FUSE or HACR BRKR HACR BRKR 31/31...
  • Page 29 Table 7 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Two Speed Indoor Fan Motor (cont) w/ PWRD C.O. NO P.E. w/ P.E. (pwrd fr/ unit) UNIT NOM.V---Ph---Hz TYPE DISC. SIZE DISC. SIZE MAX FUSE or MAX FUSE or HACR BRKR HACR BRKR 36/36...
  • Page 30 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately. Copyright 2016 International Comfort Products Replaces: 509 01 3807 00 Lewisburg, TN 37091 USA 509 01 3808 00...

  • Page 31: Start- - Up Checklist

    UNIT START-UP CHECKLIST (Remove and Store in 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 judgement, follow safe practices, and adhere to the safety considerations/information as outlined in the preceding sections of this Installation Instructions document.
  • Page 32 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 2016 International Comfort Products Replaces: 509 01 3807 00 Lewisburg, TN 37091 USA 509 01 3808 00 Specifications are subject to change without notice.

This manual is also suitable for:

Rgh102Rgh120Rgh110Rgh090Rgh073

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