Ferguson JWSH100150, JWSH100250 warranty Table of Contents, Features

TABLE OF CONTENTS

PAGE
ROUGH-IN DIMENSIONS	2
FOREWORD	2
FEATURES	3,4
Water Temperature Control	3
High Limit Switch (E.C.O.)	4
Dishwashing Machine Requirement	4
Circulating Pump	5
INSTALLATION INSTRUCTIONS	4
Required Ability	4
Insulation Blankets	4
Locating The Heater	5
Clearances	5
Hard Water	6
Air Requirements	6
Mechanical Exhausting of Room Air	6
Unconfined Space	6
Confined Space	6
Chemical Vapor Corrosion	6
Venting	6
Vent Pipe Termination	6
Installation Requirements for the
Direct Venting	8
Direct Vent Terminal Installation (Sidewall)	8
Vertical Vent Terminal Installation	9
Installation Sequence	9
Installation of Vent System	10
Vent Pipe Preparation	10
Control and Switches	11
Blower Prover Switch	11
Blocked Outlet Prover Switch	11
Blocked Inlet Prover Switch	11
Low Gas Pressure Switch	11
On/Off Switch	11
Hot Surface Igniter	11
GAS PIPING	11
Connection of Gas Pipe	12
Purging	13
Gas Meter Size - City Gases Only	13
Gas Pressure Regulation	13
Gas Valves	13
SYSTEM CONNECTIONS	13

PAGE
Thermometers	13
Relief Valve	13
Water Line Connections	13
Heater Wiring	14
USING THE ELECTRONIC CONTROLLER	15
Overview	15
Operating States	15
Adjusting the Operating Set Point	16
Changing the Display Units	17
Fault and Warning Conditions	17
Access to the Current Fault or Warning	17
Viewing the Fault History	18
PRIOR TO START-UP	18
Required Ability	18
OPERATING INSTRUCTIONS	19
Adjustment Procedure (Initial Start-Up) 120 and 150 Models	19
Adjustment Procedure (Initial Start-Up) 199 and 250 Models	19
Cathodic Protection	20
Precautions	20
GENERAL INFORMATION	20
Power Burner	20
High Limit	20
High Altitude Installations	20
MAINTENANCE	20
General	20
Maintenance Schedule	20
Flushing	23
Draining	23
Sediment Removal	23
Lime Scale Removal	23
Anode Inspection and Replacement	23,24
Drain Valve and Access Panels	24
Relief Valve	24
Circulating Pump	24
Vent System	24
INSTALLATION DIAGRAMS	25-29
Manifold Kits	30
CHECKLIST AND SERVICE INFORMATION	31
TROUBLE-SHOOTING	31
LIMITED WARRANTY	33

FEATURES

IMPORTANT

IT IS REQUIRED THAT A QUALIFIED SERVICE TECHNICIAN PERFORM THE INITIAL FIRING OF THE HEATER. AT THIS TIME THE USER SHOULD NOT HESITATE TO ASK THE TECHNICIAN ANY QUESTIONS WHICH HE MAY HAVE IN REGARD TO THE OPERATION AND MAINTENANCE OF THE UNIT.

A CHECKLIST AND SERVICE INFORMATION section are included at the rear of this manual. By using this checklist the user may be able to make minor operational adjustments and save himself unnecessary service calls. However, the user should not attempt repairs which are not listed in this section.

WATER TEMPERATURE CONTROL

DANGER

THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT WATER TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE SCALD BURNS RESULTING IN SERIOUS PERSONAL INJURY AND/OR DEATH. THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON’S AGE AND THE TIME OF THE EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN, AGED OR DISABLED PERSONS INCREASES THE HAZARDS TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A BATHTUB OR SHOWER.

THE WATER HEATER SHOULD BE LOCATED IN AN AREA WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS TO SET TEMPERATURES.

The water temperature is controlled using the Temperature Control Button on the Display at the front of the unit (See Figure 1). This control utilizes two temperature probes to determine the tank temperature. The primary temperature probe is located at the top of the tank and the other is near the water inlet.

The temperature may be adjusted from 90°F/32°C to 180°F/82°C. The thermostat was adjusted to 120°F/49°C before the heater was shipped from the factory. It is recommended that lower water temperature be used to avoid the risk of scalding. It is further recommended, in all cases, that the water

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