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Lochinvar 502 - page 1
User Manual Models: 502, 752, 1002, 1302, 1501, 1701, and 2001 Up T o 5:1 T urndown If the information in this manual is not followed exactly , a fire or explosion may r esult causing property damage, personal injury or loss of life. This appliance MUST NO T be installed in any location wher e gasoline or flammable vapors are likely t o be present. ...
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Lochinvar 502 - page 2
User ’s Information Manual 2 Hazar d definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Please read before proceeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Lochinvar 502 - page 3
Please r ead bef ore pr oceeding User ’s Information Manual 3 NOTICE This is a gas appliance and should be installed by a licensed electrician and/or certified gas supplier . Serv ice must be performed by a qualified serv ice installer , ser vice agency or the gas supplier . W ARNING If the infor mation in these instructions is not follow ...
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Lochinvar 502 - page 4
User ’s Information Manual 4 Please r ead bef ore pr oceeding W ARNING T o minimize the possibility of serious personal injur y , fire, or damage t o your appliance, never violate the following safety rules: 1. Boilers and water heaters are heat producing appliances. T o a void damage or injur y , do not stor e materials against the appli ...
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Lochinvar 502 - page 5
1 Maintenance sc hedule User ’s Information Manual 5 W ARNING Follow the maint enance pr ocedures giv en throughout this manual. Failure to perform the service and maintenance or follo w the directions in this manual could r esult in damage to the appliance or system, resulting in severe personal injury , death, or substantial propert y d ...
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Lochinvar 502 - page 6
User ’s Information Manual 6 1 Maintenance sc hedule Maintenance procedur es Appliance must be ser viced and maintained W ARNING The appliance must be inspected and started annually at the beginning of the heating season by a qualified serv ice tec hnician. In addition, the maintenance and care of the pool heater designated on page 5 of t ...
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Lochinvar 502 - page 7
1 Maintenance sc hedule (continued) User ’s Information Manual 7 Inspect condensate system 1. Inspect the condensate drain line, c ondensate PV C fittings, and condensate trap on an annual basis. Figure 1-1_ Condensate T rap Flush condensate trap with water 1. R emove the four (4) screws securing the to p cov er to the condensate trap and remo ve ...
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Lochinvar 502 - page 8
User ’s Information Manual 8 2 Oper a ting instr uctions ...
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Lochinvar 502 - page 9
User ’s Information Manual 9 3 SMART SY STEM contr ol module Access modes User The user can adjust the space heating target temperature and the tank target te mperature (if a tank sensor is used) by using the UP and DO WN buttons (FIG. 3-1) at an y time dur ing normal operation. By entering the USER code (0704), the user can also change te mperat ...
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Lochinvar 502 - page 10
User ’s Information Manual 10 Parameter table M M E E N N U U S S U U B B I I T T E E M M D D E E S S C C R R I I P P T T I I O O N N S S E E E E P P A A G G E E U U S S E E R R A A C C C C E E S S S S I I N N S S T T A A L L L L E E R R A A C C C C E E S S S S D D I I S S P P L L A A Y Y M M O O D D I I F F Y Y D D I I S S P P L L A A Y Y M M O ...
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Lochinvar 502 - page 11
User ’s Information Manual 11 Viewable and changeable contr ol parameter s A: General Heater model The control will displa y “L OCHINV AR ” as the model number because the same contr ol is used on several models. This will be displayed when parameter A1 has been accessed. This par ameter is not changeable. User code The U ser Code allows the ...
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Lochinvar 502 - page 12
User ’s Information Manual 12 3 SMART SY STEM contr ol module E: DHW settings DHW t ank set point W hen a temperature sensor is installed in the DHW tank, the DHW tank set point sets the target temperature of the water in the tank. The user or installer can adjust this set point by accessing paramete r E1 . The temperature range of this parameter ...
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Lochinvar 502 - page 13
User ’s Information Manual 13 Status display screens 3 SMART SY STEM contr ol module (continued) Status Display Screens By using the Pr e vious/Next ( , ) arro w keys on the SMART SY STEM display panel, y ou can navigate through the nine (9) display scr eens. Each screen will contain tw o (2) viewable items. The following is a descr iptio ...
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Lochinvar 502 - page 14
User ’s Information Manual 14 3 SMART SY STEM contr ol module Status Display Screens (cont’ d) By using the Pr e vious/Next ( , ) arro w keys on the SMART SY STEM display panel, y ou can navigate through the nine (9) display scr eens. Each screen will contain tw o (2) viewable items. The following is a descr iption of the indiv idual it ...
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Lochinvar 502 - page 15
User ’s Information Manual 15 3 SMART SY STEM contr ol module (continued) Status Display Screens (cont’ d) By using the Pr e vious/Next ( , ) arro w keys on the SMART SY STEM display panel, y ou can navigate through the nine (9) display scr eens. Each screen will contain tw o (2) viewable items. The following is a descr iption of the in ...
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Lochinvar 502 - page 16
Revision Notes: Revision B (PBX-PFX-USER-Rev B) reflects the addition of Models 502 - 1302 to the manual. PBX-PFX-USER-Rev B CP-2M-8/07 ...
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