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Aiko CTH3-115, CTH3-150, CTH3-200, CTH3-80 54 of 71, 10.7 Line Voltage Power Wiring, 10.8 Electrical Connection to the Burner

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CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

54 of 71

10.7 Line Voltage Power Wiring

10.8 Electrical Connection to the Burner

Gnd.

120 V-60 Hz

Supply Circuit HNHN

Gnd.

Burner 2 Burner 3

Gnd.

Burner 1

NOTE: The burners must have an uninterrupted 120 V, 60 Hz, 1 Ø power supply.

BX or Romex Connector

Junction Box

Electrical Cord or

Flexible Conduit

Burner

Connect wires together

with suitable approved

wire connectors.

Green to Ground

White to L2

Black to L1

Ground

Black

White

Green

Contents

Main Gas-Fired, Low Intensity Unitary Heater Installation, Operation & Service Manual CTH3-80 CTH3-115 CTH3-150 CTH3-200 Page 2012 Roberts-Gordon LLC TABLE OF CONTENTS Page TABLE OF FIGURES LIST OF TABLES Page Page Page 3 of 71 FIGURE 2: Side and Back Panel Label Placement CAUTION Page Page Page Page Page Page 11 of 71 5.1 Standard Parts List See Page 37, Section 9 *Canadian Models: Rubber (Type 1) Gas Hoses available as an accessory. . WARNING 13 of 71 FIGURE 14: Critical Hanger Placement Typical Suspension Details 14 of 71 FIGURE 15: Linear Heater Assembly Overview 15 of 71 FIGURE 16: Linear Heater Layout Overview LEGEND 16 of 71 Step 6.1 Burner Tube Installation Nut A C 2" (5 cm) 18 of 71 Step 6.3.2 Coupling and Tube Assembly (Continued) Step 6.4 Turbulator Installation i Page 20 of 71 21 of 71 Step 6.6 Burner Installation Page Page 24 of 71 FIGURE 18: U-Tube Heater Layout Overview LEGEND Page Page 27 of 71 7.3 Reflector Side Extension Step 7.3.1 Bracket Installation Step 7.3.2 Side Reflector Installation Page Page AB CD WARNING Page Page Page Page 36 of 71 8.11.4 Vertical Outside Air Supply for Double Heater Installation TOP VIEW Requirements: Heaters must be controlled by a common thermostat. SIDE VIEW Page 38 of 71 FIGURE 21: Gas Connection with Flexible Gas Hose CORRECT POSITIONS CAUTION INCORRECT POSITIONS (WRONG INSTALLATION) Page Page Page Page Page T Page Page Page CTH3-S 48 of 71 A BA B W J10 W Page Page Page Page SECTION 1 0: W 53 of 71 10.6 Ladder Diagram L1 L2 120V 54 of 71 10.7 Line Voltage Power Wiring 10.8 Electrical Connection to the Burner Page Page Page Page Page Page Page Page Page Page Page Page Page 68 of 71 Description Part Number Page Page 71 of 71 SECTION 15: THE ROBERTS GORDON VANTAGE MODULATING WARRANTY ROBERTS-GORDON WILL PAY FOR: ROBERTS-GORDON WILL NOT PAY FOR: WARRANTY IS VOID IF: READ YOUR INSTALLATION, OPERATION AND SERVICE MANUAL