Bradford White UCG100H399, Service Manual

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W at er H e at er I nsta ll at i o n Check li st
P roduct H and li ng - C are f u ll y uncrate the heater . Move in p l ace w ith a hand truck ( Do not use the venting pipes f or
hand l es ) .
E l ectr i ca l Requ i rements - Make sure there is 1 2 0 vo l ts l ine vo l tage . Line vo l tage must be proper l y po l arized . A dequate
ground supp l ied to the heater .
V ent i ng Requ i rements - A ll venting must stay w ithin the required l engths and diameter ( see tab l e be l o w) . P roper support
o f the venting pipe is a MU S T ( every 5 f t vertica l and 3f t horizonta l ) . Termination must be l ocated to prevent re - circu l ation
o f f l ue gases .
Gas Requ i rements - Gas piping sized adequate l y, ¾" . I nsta ll a proper l y sized regu l ator ( i f unkno w n, assure an adequate
vo l ume o f gas is avai l ab l e ) . 7" W . C . is required w hen the unit is running . Gas pressure must stay be l o w 1 4 " W . C . static
pressure . P ressure drops bet w een static pressure and operating f l o w shou l d be l ess than 3 " W . C .
Ser vi ce/Mechan i ca l Room - P rovide adequate space f or servicing heater . Leave enough overhead room to remove the
anode rods f or servicing ( 18" min . ) .
V ent T ab l es
(I ntake On l y )
Model Number Max Intake Vent Length (feet) 3" Max Intake Vent Length (feet) 4"
U C G1 00 H 3 99 2 5 5 0
W ARN I NG ! The U C G1 00 H 3 99 mode l is not approved f or 2 inch diameter intake vent pipe . V enting w ith 2 inch pipe may
resu l t in damage to the w ater heater or cause an unsa f e condition . DO NO T use 2 inch V ent or A ir I ntake P ipe !
Determ i n i ng requ i red i ntake v ent l ength
1 . Determine the tota l l ength o f straight vent pipe ( in f eet ) required f or the intake .
2. A dd 5 f eet o f venting f or every 9 0 ° e l bo w .
3 . A dd 2 ½ f eet o f venting f or every 4 5 ° e l bo w .
4. T ota l i ntake v ent l ength cannot exceed “ Max I ntake V ent L ength ” on the v ent i ng tab l e shown
abo v e .
Examp l e of T ota l I ntake V ent L ength for UCG100 H 3 99 i nsta ll at i on :
A 3 ” venting system has a tota l o f t w o 9 0 - degree e l bo w s and a tota l straight pipe l ength o f 1 0 f eet .
E quiva l ent vent l ength f or e l bo w s: 2 x 5 f eet = 1 0 f eet .
T ota l equ iv a l ent i ntake v ent d i stance = 10 feet + 10 feet = 20 feet tota l equ iv a l ent v ent l ength . T h i s i s
be l ow the max i mum a ll owed d i stance of 25 feet for th i s mode l us i ng 3 ” v ent .
The “ meta l/ atmospheric ” e x haust system o f this unit must f o ll o w the N ationa l F ue l Gas code .
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