John-wood Commercial - AJWSC User Manual

COMMERCIAL GAS WATER HEATERINSTALLATION AND OPERATING INSTRUCTIONSfor Signature Series models with prefix JWSC and AJWSCRead and understand these inst

Louvers and GrillsOpenings for air supply ducts must provide free unobstruct-ed air movement. Louver and grill openings must be sizedto ensure that th

VentingIt is the responsibility of the installing contractor to provide avent adequate in capacity and in good usable condition.Btu/hr capacity limita

WATER SUPPLYPiping InstallationPiping, fittings, and valves should be installed according tothe installation drawing (Figure 7). If the indoor install

For example, a top inlet connection must use a top outletconnection.2. The installation of unions in both the hot and cold watersupply lines is recomm

Important: Only a new temperature and pressure reliefvalve should be used with your water heater. Do not use anold or existing valve as it may be dama

Figure 11 Commercial Unit with Auxiliary Booster Heater - Two Temperature (With or Without Building Recirculation)Note: Install a vacuumrelief valve i

ELECTRICAL SUPPLYIf you lack the necessary skills required to properly installthe electrical wiring to this water heater, do not proceed buthave a qua

INSTALLATION CHECKLIST– 17 –Check HereWater Heater Location1. Centrally located with the water piping system.Located as close to the gas piping and ve

IV) LIGHTING & OPERATING INSTRUCTIONS– 18 –WARNING: If you do not follow these instructionsexactly, a fire or explosion may result causing propert

Safety Shut-offThis water heater is designed to automatically shut-off in theevent of the following:1. The pilot flame is extinguished for any reason.

TABLE OF CONTENTSI) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3User Responsibilities

– 20 –Burner FlamesInspect the burner flames through the viewport and com-pare them to the drawings in Figure 15. A properly operat-ing burner should

– 21 –Display Shows Display Showsno displayno displayno displayMain gas valve disconnectedPilot gas valve disconnectedSecondary disconnectLine disconn

– 22 –Error modeWhen the integrated control detects a failure condition itenters Error mode. In this mode the display alternatesbetween showing “Err”

– 23 –CALL FORHEAT ACTIVE(Temperature low)POWER INTERRUPTION Systemshuts offORPILOT FLAME FAILURE Valves close,after recycle delay system recycles. If

Draining and FlushingIt is recommended that the tank be drained and flushedevery 6 months to remove sediment which may buildup dur-ing operation.Note:

8. Replace and sufficiently tighten the two screws holdingthe Pilot/Burner Assembly in place.9. Reconnect the gas supply line to the gas valve.10. Tur

– 26 –IX) TROUBLESHOOTING GUIDEDetect Conditions Alarm (ERROR) Name Control ActionService Suggestion (After Error Matured)Detection TimeRemote Display

– 27 –Detect Conditions Alarm (ERROR) Name Control ActionService Suggestion (After Error Matured)Detection TimeRemote DisplayValve relays shorted/open

– 28 –X) PARTS REFERENCE ILLUSTRATIONNo. Part Name and Description No. Part Name and Description1 Drafthood 14 Gas Valve2 Dip Tube (Top) 15 Main Burne

See Rating Label Serial Number prefix forWarranty Code. Reduced warranty periodapplies to Newfoundland.Warranty Code: P R S T U V W YStandard Warranty

Thank you for purchasing a Commercial Water Heater.Properly installed and maintained, it will provide years oftrouble free service.This gas-fired wate

This water heater is design-certified by CSA International asa Category I, non-direct vented water heater which takes itscombustion air either from th

Safety Warning (Scalding)Hot water produced by this appliance can cause severeburns due to scalding. The hazard is increased for youngchildren, the ag

Unpacking the Water HeaterImportant: Do not remove any permanent instructions,labels, or the data label from outside of the water heater oron the insi

• If the water heater is installed in a restaurant or food serv-ice location where the floor is cleaned frequently, NSFInternational requires the wate

Note: If using a flexible gas connector, make sure its ratingtag matches or exceeds the input of the water heater.Tables 1, 2, and 3 provide a sizing

Gas Leak TestingImportant: This water heater and its gas connection mustbe leak tested before placing the appliance in operation.• If the code require