Honeywell 7800 wiring diagram - A.? all 7800’s are at the very least 10 seconds.? there has been an exception to this.? the authentic rm7890’s had most effective a -2nd initiate duration, however due to the fact october of 1994, the rm7890’s have been revised and still have a ten 2d minimum provoke length, like all of the relaxation of the 7800 collection. A.? in the course of the initiate duration, all the 7800 series of controls study the voltage and frequency of the power provided.? the energy must be inside positive tolerances for the control to remain online.? all the 7800’s are rated 120vac, 60 hz.? the tolerances for voltage are plus 10, minus 15 (102 to 132 volts) and plus zero, minus 10 for frequency (fifty one to 60 hz).? there are 50 hz controls to be had. A.? no.? the initiate period is activated when the relay is “to start with” powered.? the 7800’s have to be powered thru a fused disconnect so they're powered at all times.? the 7800’s may also input provoke at any time if the strength deliver is going out of tolerance. A.? yes, however they are for export and would not be used in this u . S ..? all antique 208 to 240 vac systems ought to be upgraded to one hundred twenty vac.? each insurance agency and approval body within the americaa. Requires that flame safety systems be one hundred twenty vac, one side grounded.
With the 7800’s now in extensive use, questions were requested with the aid of clients that aren't genuinely replied, or not covered in any respect, in honeywell’s literature.? this information-tec will attempt to solution some of those questions. A.? that depends.? if, on electricity-up, the provoke tolerances are not met inside the 10 seconds, a “keep” duration is started out.? if the tolerances are met in the course of this “maintain” duration, the 10-2d length re-begins to make certain all tolerances are met for 10 seconds.? the “maintain” period can last up to 4 mins maximum.? if tolerances aren't met in four minutes, a lockout will arise.