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Lochinvar WH 55 - 399 - page 1
User’s Information Manual Models: WH 55 - 399 If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present. WHAT TO DO IF YOU SMELL GAS • Do not t ...
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Lochinvar WH 55 - 399 - page 2
2 Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk level s or to important information concerning the life of the product. DANGER WARNING CAUTION CAUTION NOTICE DANGER indicates an imminently hazardous situation which, if not avoided, will result ...
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Lochinvar WH 55 - 399 - page 3
User’s Information Manual Please read before proceeding The Knight Wall Mount Installation and Operation Manual along with the Knight Wall Mount Service Manual are for use only by a qualified heating installer/service technician. Refer only to this User’s Information Manual for your reference. Improper installation, adjustment, alteration, serv ...
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Lochinvar WH 55 - 399 - page 4
User’s Information Manual 1 Prevent combustion air contamination 4 If the boiler combustion air inlet is located in a laundry room or pool facility, for example, these areas will always contain hazardous contaminants. To prevent the potential of severe personal injury or death, check for areas and products listed in Table 1A before installing the ...
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Lochinvar WH 55 - 399 - page 5
User’s Information Manual 2 Maintenance schedule 5 Service technician (see the Knight Wall Mount Service Manual) General: • Reported problems • Inspect interior; clean and vacuum if necessary • Clean condensate trap and fill with fresh water • Check for leaks (water, gas, flue, condensate) • Verify flue and air lines in good condition a ...
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Lochinvar WH 55 - 399 - page 6
User’s Information Manual 2 Maintenance schedule 6 Maintenance procedures Boiler must be serviced and maintained WARNING The boiler must be inspected and started annually at the beginning of the heating season by a qualified service technician. In addition, the maintenance and care of the boiler designated on page 5 of this manual and explain ...
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Lochinvar WH 55 - 399 - page 7
User’s Information Manual 2 Maintenance schedule (continued) 7 Clean/Inspect Trap Assembly 1. Remove the clean out cap on the bottom of the trap. Let the condensate and any debris drain out. 2. Refill the trap according to the instructions on page 6. WARNING Figure 2-1 Condensate Trap Condensate disposal 1. This boiler is a high efficiency ap ...
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Lochinvar WH 55 - 399 - page 8
User’s Information Manual 2 Maintenance schedule 8 WARNING Have leaks fixed at once by a qualified service technician. Failure to comply could result in severe personal injury, death, or substantial property damage. Operate relief valve 1. Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoi ...
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Lochinvar WH 55 - 399 - page 9
User’s Information Manual 9 3 Operating instructions o Figure 3-1 Operating Instructions - Models 55 - 285 ...
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Lochinvar WH 55 - 399 - page 10
User’s Information Manual 10 3 Operating instructions Figure 3-2 Operating Instructions - Model 399 ...
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Lochinvar WH 55 - 399 - page 11
User’s Information Manual 11 4 SMART SYSTEM control module Access modes User The user can adjust space heating and tank target temperatures by pressing the NAVIGATION dial when “ SETPOINTS” is flashing at the bottom of the display. The user can adjust the date and time, night setback override,temperature units, and night setback override ...
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Lochinvar WH 55 - 399 - page 12
User’s Information Manual 12 4 SMART SYSTEM control module Night Setback Override Any Night Setback On trigger currently active or scheduled within the next seven (7) days can be skipped. To skip a trigger, press the MENU key for 5 seconds. Once password “0000” appears, press the SAVE key. Rotate the NAVIGATION dial to NSB OVERRIDE, and press ...
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Lochinvar WH 55 - 399 - page 13
User’s Information Manual 13 4 SMART SYSTEM control module (continued) Status Display Screens Section Display Description A (Boiler Status Bar) STANDBY The unit has not received a call for heat from a remote thermostat nor has it received a call for heat from a DHW thermostat. START The unit has begun a burn cycle and is checking all safety circu ...
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Lochinvar WH 55 - 399 - page 14
User’s Information Manual 14 4 SMART SYSTEM control module Status Display Screens (cont’d) Section Display Description C (Operational Information) SYSTEM: The temperature read by the system supply sensor (if connected). TANK: The temperature read by the tank sensor (if connected). OUTDOOR: The temperature read by the outdoor sensor (if connecte ...
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Lochinvar WH 55 - 399 - page 15
User’s Information Manual 15 4 SMART SYSTEM control module (continued) Status Display Screens (cont’d) Section Display Description E (NAVIGATION Dial Function) Turning the NAVIGATION dial will select the next or previous Status Screen. Pressing the NAVIGATION dial will show the next fault, NSB (Night Setback) trigger, or ramp delay setting. Pre ...
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Lochinvar WH 55 - 399 - page 16
Revision Notes: Revision A (ECO C06854) initial release. Revision B (ECO C07072) reflects the update of the User information in the SMART SYSTEM control module “Access modes” section on page 11 and user information in the “Night Setback Override” section on page 12. WH-USER Rev B 01/11 ...
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