Proheat X45–School Bus - Manual (Page 2)

CONTENTS
A. SAFETY ...................................................................................... A-1
B. INTRODUCTION ......................................................................... B-1
C. MODEL DESCRIPTIONS ............................................................ C-1
1.0 TECHNICAL SPECIFICATIONS ................................................. 1-1
1.1 PHYSICAL – X45 ..................................................................... 1-2
1.2 ELECTRICAL – X45 .................................................................. 1-4
1.3 TORQUE SPECIFICATIONS ........................................................ 1-6
2.0 OPERATING YOUR PROHEAT HEATER ..................................... 2-1
3.0 INSTALLATION .......................................................................... 3-1
3.1 LOCATING THE HEATER ........................................................... 3-2
3.1.1 Select Your Location ...................................................... 3-2
3.1.2 General considerations ................................................... 3-2
3.1.3 Mounting the Proheat Heater in an Enclosure ................... 3-3
3.2 MOUNTING THE HEATER .......................................................... 3-4
3.2.1 Option A – Heater With Enclosure .................................... 3-4
3.2.1 Option B – Heater Without Enclosure ............................... 3-5
3.3 EXHAUST PIPE CONNECTION .................................................... 3-6
3.4 PLUMBING THE SYSTEM.......................................................... 3-7
3.4.1 General Considerations .................................................. 3-7
3.4.2 Option A – Engine Heat or Supplemental Heat .................. 3-8
3.4.3 Option B – Engine and Sleeper Heat ................................ 3-9
3.5 WIRING & ELECTRICAL CONNECTIONS .................................... 3-10
3.5.1 General Considerations ................................................ 3-10
3.5.2 Power Connection to Batteries ...................................... 3-11
3.5.3 Timer Connections (Optional) ........................................ 3-12
3.5.4 On/Off Switch Connections ........................................... 3-13
3.5.5 Sleeper Fan Model Heater Wiring Details ....................... 3-14
3.5.6 Option A – OEM Heater & Proheat Thermostat ................ 3-14
3.5.7 Option B – OEM Heater & Thermostat ............................ 3-15
3.5.8 Option C – Auxiliary Sleeper Heater................................ 3-16
3.5.9 Option D – Auxiliary Sleeper Heater Current Limited ........ 3-17
3.5.10 Auxiliary Input Model Heater Wiring Details................... 3-18
3.5.11 Option A – Preheat Mode Supplemental Mode Operation ... 3-19
3.5.12 Option B – Preheat and Supplemental Mode ................... 3-20
3.5.13 Option C – Standard Mode & Supplemental Mode .........3-20
3.6 FUEL SYSTEM ....................................................................... 3-22
3.6.1 General Considerations ................................................ 3-22
3.6.2 Option A – 1/4" or 1/2" NPT Port ................................. 3-23
3.6.3 Option B – Existing Blank Fuel Sender Cover Plate .......... 3-24
3.6.4 Option C – Hole Drilled into Fuel Tank ............................ 3-24
3.6.5 Installation .................................................................. 3-25
3.7 FIRST TIME STARTUP............................................................. 3-26
4.0 PRINCIPLES OF OPERATION ................................................... 4-1
4-1 GENERAL DESCRIPTION ........................................................... 4-1
4-2 MODES OF OPERATION ............................................................ 4-5
4.2.1 Standard Mode – All Models ........................................... 4-5
4.2.2 Preheat Mode – Aux Input Models Only ............................ 4-6
4.2.3 Supplemental Mode – Aux Input Models Only ................... 4-7
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