GSW John Wood Installation And Operating Instructions Manual

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Summary of Contents:

[Page 1] GSW John Wood

COMMERCIAL GAS WATER HEATER INSTALLATION AND OPERATING INSTRUCTIONS for Signature Series models with prefix JWSC and AJWSC Read and understand these instructions thoroughly before starting. WARNING: If the information in these instructions is not fol...

[Page 2] GSW John Wood

TABLE OF CONTENTS I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 User Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II) Safety . . ...

[Page 3] GSW John Wood

Thank you for purchasing a Commercial Water Heater. Properly installed and maintained, it will provide years of trouble free service. This gas-fired water heater has been developed to produce potable hot water for commercial demands and may also be u...

[Page 4] GSW John Wood

This water heater is design-certified by CSA International as a Category I, non-direct vented water heater which takes its combustion air either from the installation area or from air ducted to the unit from the outside. In addition to the installati...

[Page 5] GSW John Wood

Safety Warning (Scalding) Hot water produced by this appliance can cause severe burns due to scalding. The hazard is increased for young children, the aged or the disabled when water temperatures exceed 52°C (125°F). Use tempering valves, also know...

[Page 6] GSW John Wood

Unpacking the Water Heater Important: Do not remove any permanent instructions, labels, or the data label from outside of the water heater or on the inside of panels. • Remove exterior packaging and place installation compo- nents aside. • Inspec...

[Page 7] GSW John Wood

• If the water heater is installed in a restaurant or food serv- ice location where the floor is cleaned frequently, NSF International requires the water heater to maintain 152mm (6 in.) of clearance above the floor. To comply with the NSF Internat...

[Page 8] GSW John Wood

Note: If using a flexible gas connector, make sure its rating tag matches or exceeds the input of the water heater. Tables 1, 2, and 3 provide a sizing reference for commonly used gas pipe materials. Consult the “Natural Gas and Propane Installatio...

[Page 9] GSW John Wood

Gas Leak Testing Important: This water heater and its gas connection must be leak tested before placing the appliance in operation. • If the code requires the gas lines to be tested at a pres- sure exceeding 14 in. w.c. (3.5 kPa), the water heater ...

[Page 10] GSW John Wood

Louvers and Grills Openings for air supply ducts must provide free unobstruct- ed air movement. Louver and grill openings must be sized to ensure that the FREE OPEN AREA is never less than the area of the air duct. LOCATION: The locations for top and...

[Page 11] GSW John Wood

Venting It is the responsibility of the installing contractor to provide a vent adequate in capacity and in good usable condition. Btu/hr capacity limitations are governed by the style and height of the vent/chimney. Vent piping must be installed in ...

[Page 12] GSW John Wood

WATER SUPPLY Piping Installation Piping, fittings, and valves should be installed according to the installation drawing (Figure 7). If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation....

[Page 13] GSW John Wood

For example, a top inlet connection must use a top outlet connection. 2. The installation of unions in both the hot and cold water supply lines is recommended for ease of removing the water heater for service or replacement. 3. Since most commercial ...

[Page 14] GSW John Wood

Important: Only a new temperature and pressure relief valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater. Do not place any valve betwe...

[Page 15] GSW John Wood

Figure 11 Commercial Unit with Auxiliary Booster Heater - Two Temperature (With or Without Building Recirculation) Note: Install a vacuum relief valve if required by local codes. 45mm (1 1/2 in.) Cold water supply – 15 – Shut-off Valve Check Valv...

[Page 16] GSW John Wood

ELECTRICAL SUPPLY If you lack the necessary skills required to properly install the electrical wiring to this water heater, do not proceed but have a qualified service technician perform the installation. When making the electrical connections, alway...

[Page 17] GSW John Wood

INSTALLATION CHECKLIST – 17 – Check Here Water Heater Location 1. Centrally located with the water piping system. Located as close to the gas piping and vent pipe system as possible. 2. Located indoors and in a vertical position. Protected from f...

[Page 18] GSW John Wood

IV) LIGHTING & OPERATING INSTRUCTIONS – 18 – 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. This appliance is equipped with an ignition de...

[Page 19] GSW John Wood

Safety Shut-off This water heater is designed to automatically shut-off in the event of the following: 1. The pilot flame is extinguished for any reason. 2. The water temperature exceeds 96°C (205°F). Read and understand these directions thoroughly...

[Page 20] GSW John Wood

– 20 – Burner Flames Inspect the burner flames through the viewport and com- pare them to the drawings in Figure 15. A properly operat- ing burner should produce a soft blue flame and be about 50mm (2 in.) to 64mm (2 -1/2 in.) in height. Blue tip...

[Page 21] GSW John Wood

– 21 – Display Shows Display Shows no display no display no display Main gas valve disconnected Pilot gas valve disconnected Secondary disconnect Line disconnect Sensor 2 disconnected Sensor 1 disconnected Description Valve control di...

[Page 22] GSW John Wood

– 22 – Error mode When the integrated control detects a failure condition it enters Error mode. In this mode the display alternates between showing “Err” and an error code number, display- ing each for one (1) second. The display characters ...

[Page 23] GSW John Wood

– 23 – CALL FOR HEAT ACTIVE (Temperature low) POWER INTERRUPTION System shuts off OR PILOT FLAME FAILURE Valves close, after recycle delay system recycles. If recycles exceed maximum, timed lockout is entered. 1 PILOT BURNER OPERATION Pilot burne...

[Page 24] GSW John Wood

Draining and Flushing It is recommended that the tank be drained and flushed every 6 months to remove sediment which may buildup dur- ing operation. Note: Warranty is null and void in the event lime & scale deposits are allowed to exceed two inch...

[Page 25] GSW John Wood

8. Replace and sufficiently tighten the two screws holding the Pilot/Burner Assembly in place. 9. Reconnect the gas supply line to the gas valve. 10. Turn on gas at main shutoff valve. 11. Check for gas leaks and proper operation on the unit after se...

[Page 26] GSW John Wood

– 26 – IX) TROUBLESHOOTING GUIDE Detect Conditions Alarm (ERROR) Name Control Action Service Suggestion (After Error Matured) Detection Time Remote Display Flame current lower than threshold. FLAME_CURRENT Normal. Clean flame rod. Fla...

[Page 27] GSW John Wood

– 27 – Detect Conditions Alarm (ERROR) Name Control Action Service Suggestion (After Error Matured) Detection Time Remote Display Valve relays shorted/open, other internal electronic failures SLO_ELECTRONICS Soft lockout. Replace con...

[Page 28] GSW John Wood

– 28 – X) PARTS REFERENCE ILLUSTRATION No. Part Name and Description No. Part Name and Description 1 Drafthood 14 Gas Valve 2 Dip Tube (Top) 15 Main Burner Orifice(s) 3 Dip Tube (Front) (optional, not shown) 16 Control Box Cover 4 Dip Tube (Back...

[Page 29] GSW John Wood

See Rating Label Serial Number prefix for Warranty Code. Reduced warranty period applies to Newfoundland. Warranty Code: P R S T U V W Y Standard Warranty Years: 3 5 6 7 8 9 10 12 Reduced Warranty Years: 23 3555 5 7 ~ Certificate of Warranty ~ For it...