Table of Contents
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Dual Fuel Supplemental Manual
Models: FBD 751 - 6001
Series: 102 & 112
DIR #2000508
DIR #2000508187
This manual must only be used by
⚠WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual along with
the Crest Installation and Operation
Manual, and the Crest Service Manual,
before installing. Perform steps in the
order given. Failure to comply could
result in severe personal injury, death,
or substantial property damage.
Save this manual for future reference.
100268179_2000509263_Rev K
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Table of Contents
Related Manuals for Lochinvar CREST 102 Series
Summary of Contents for Lochinvar CREST 102 Series
- Page 1 100268179_2000509263_Rev K Dual Fuel Supplemental Manual Models: FBD 751 - 6001 Series: 102 & 112 DIR #2000508187 DIR #2000508 This manual must only be used by ⚠WARNING a qualified heating installer / service technician. Read all instructions, including this manual along with the Crest Installation and Operation Manual, and the Crest Service Manual, before installing.
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Page 2: Table Of Contents
CONTENTS HAZARD DEFINITIONS ..........2 2. START-UP PLEASE READ BEFORE PROCEEDING ..... 3 Start the Boiler ..............8 THE CREST -- HOW IT WORKS ........4 Check System and Boiler ............ 8 RATINGS ................5 Operating Instructions ............9 1. GAS CONNECTIONS Check Flame and Combustion ......... -
Page 3: Please Read Before Proceeding
Dual Fuel Supplemental Manual Please read before proceeding When servicing boiler – Installer – Read all instructions, including ⚠WARNING this manual, the Crest Installation and • To avoid electric shock, disconnect electrical supply Operation Manual and the Crest Service Manual, before installing. Perform steps before performing maintenance. -
Page 4: The Crest -- How It Works
Dual Fuel Supplemental Manual The Crest Dual Fuel - How it works... 7. Small propane valve (Valve 1 Propane) 1. Propane gas connection The small propane gas valve senses the negative pressure The propane gas connection pipe is a threaded black iron pipe created by the blowers, allowing gas to flow only if the gas connection. -
Page 5: Ratings
Dual Fuel Supplemental Manual Ratings Crest Other Specifications AHRI Rating Vent Weight AHRI Model Number Input Gross Appliance Size w/Water Pipe Pipe Ratings Output Water Gas Inlet (lbs.) Size Size Size Water, Content Size Outlet Inlet Note: Change “N” to (Notes 4 - 6) Gallons “L”... -
Page 6: Gas Connections
Dual Fuel Supplemental Manual Gas connections Table 1A First Stage Piping at High Pressure_10 PSI Nominal Iron Pipe Length of pipe or tubing, feet Size Inches Maximum Capacities of Pipe in KBTUH/Hr 2442 1885 1580 1382 1240 1133 1048 Pipe 4831 3812 3230... -
Page 7: Gas Pressure
Dual Fuel Supplemental Manual Gas connections Ignition problems are especially noticeable in NEW LP (continued) installations and also in empty tank situations. This can Do not check for gas leaks with an open ⚠WARNING also occur when a utility company shuts off service to an flame -- use the bubble test. -
Page 8: Start-Up
Dual Fuel Supplemental Manual Start-up Final checks before starting the boiler q Check vent piping and air piping 1. Check for gastight seal at every connection, seam of air q Read the Crest Service Manual to familiarize yourself piping, and vent piping. with SMART TOUCH control module operation. -
Page 9: Operating Instructions
Dual Fuel Supplemental Manual Start-up (continued) Figure 2-1 Operating Instructions FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. A. -
Page 10: Check Flame And Combustion
Dual Fuel Supplemental Manual Start-up Once the heater analysis is complete, test the safety shutoff Check flame and combustion device by turning the manual shutoff valve to the OFF position and ensuring the heater shuts down and registers an 1. Turn the main power off to the boiler by placing the alarm. - Page 11 Dual Fuel Supplemental Manual Start-up (continued) 3. Turn off all shutoff valves for the fuel not in use (FIG. 2-3). 5. Turn the main power ON. 4. Turn on the shutoff valve for the one in use. 6. Using the Touch Screen, accept the appropriate personality identification as shown in FIG.
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Page 12: Diagrams
Dual Fuel Supplemental Manual Diagrams Figure 3-1 Ladder Diagram_751 - 2001 Models... - Page 13 Dual Fuel Supplemental Manual Diagrams (continued) Figure 3-2 Wiring Diagram_751 - 2001 Models WARNING BOX DEPICTS OPTIONAL ITEMS DISCONNECT POWER BOX DEPICTS BEFORE SERVICING DUAL SENSOR SINGLE HOUSING BOARD LARGE CONNECTION BOARD LOW VOLTAGE 120 VAC SHIELD INTEGRATED CONTROL MODBUS HIGH VOLTAGE OPTION SHIELD...
- Page 14 Dual Fuel Supplemental Manual Diagrams Figure 3-3 Ladder Diagram_2501 - 3501 Models NEUTRAL JUNCTION BOX BOX DEPICTS L1 L2 L3 TERMINAL STRIP TERMINAL STRIP OPTIONAL ITEMS 208V 3 SUPPLY 208V SUPPLY "N" SERVICE OUTLET BOX DEPICTS DUAL SENSOR SINGLE HOUSING INTEGRATED CONTROL X1-3 BOARD...
- Page 15 Dual Fuel Supplemental Manual Diagrams (continued) Figure 3-4 Wiring Diagram_2501 - 3501 Models BOX DEPICTS OPTIONAL ITEMS BOX DEPICTS DUAL SENSOR SINGLE HOUSING BOARD (AS APPLICABLE) X1-1 LARGE CONNECTION BOARD X1-2 LOW VOLTAGE X1-3 120 VAC CN6-3 X6-3 SHIELD INTEGRATED CONTROL CN6-2 X6-1 HIGH VOLTAGE...
- Page 16 Dual Fuel Supplemental Manual Diagrams Figure 3-5 Ladder Diagram_4001 - 5001 Models JUNCTION BOX BOX DEPICTS L1 L2 L3 TERMINAL STRIP OPTIONAL ITEMS 480V 3 SUPPLY BOX DEPICTS DUAL SENSOR SINGLE HOUSING INTEGRATED CONTROL X1-3 BOARD 1.5A EACH MAX ON/OFF (AS APPLICABLE) SWITCH LOW VOLTAGE...
- Page 17 Dual Fuel Supplemental Manual Diagrams (continued) Figure 3-6 Wiring Diagram_4001 - 5001 Models BOX DEPICTS OPTIONAL ITEMS BOX DEPICTS DUAL SENSOR BOARD SINGLE HOUSING (AS APPLICABLE) X1-1 LARGE CONNECTION BOARD X1-2 LOW VOLTAGE X1-3 120 VAC CN6-3 X6-3 SHIELD INTEGRATED CONTROL CN6-2 X6-1 HIGH VOLTAGE...
- Page 18 Dual Fuel Supplemental Manual Diagrams Figure 3-7 Ladder Diagram_6001 Model JUNCTION BOX BOX DEPICTS L1 L2 L3 TERMINAL STRIP OPTIONAL ITEMS 480V 3 SUPPLY BOX DEPICTS DUAL SENSOR SINGLE HOUSING INTEGRATED CONTROL X1-3 BOARD ON/OFF 1.5A EACH MAX (AS APPLICABLE) SWITCH LOW VOLTAGE X1-12...
- Page 19 Dual Fuel Supplemental Manual Diagrams (continued) Figure 3-8 Wiring Diagram_6001 Model BOX DEPICTS OPTIONAL ITEMS BOX DEPICTS DUAL SENSOR SINGLE HOUSING BOARD (AS APPLICABLE) X1-1 LARGE CONNECTION BOARD X1-2 LOW VOLTAGE X1-3 120 VAC CN6-3 X6-3 SHIELD INTEGRATED CONTROL CN6-2 X6-1 HIGH VOLTAGE OPTION...
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Page 20: Revision Notes
Revision Notes: Revision A (Change #500001029) initial release. Revision B (PCP# 3000007468 / CN# 500007726) reflects the addition of the Energy Star logo. Revision C (PCP# 3000027158 / CN# 500016862) reflects the addition of Models 2501 - 6001 as well as gas valve changes to series 112 that were originally on TLA #27116.