TO THE INSTALLER:
Please attach these in -
struc tions next to the
water heater.
TO THE CONSUMER:
Read these and all com -
po nent in struc tions.
Please keep for fu ture
reference. Please re -
mem ber to return the
registration card.
Waranty, registration
card & parts list in clud ed.
WARNING:
Improper installation, adjustment, alteration, ser vice
or maintenance can cause serious in ju ry or prop -
erty damage. Refer to this man u al. For as sis tance
or additional in for ma tion, con sult a qual i fied in stall er
or service agency.
WARNING:
If the information in these instructions is not fol -
lowed exactly, fire or explosion may result and can
cause property damage, personal in ju ry or death.
WARNING:
Follow minimum combustible clearance as noted
on wa ter heater label. Do not in stall on com bus ti -
ble flooring (see Figure 2, Page 3). In stall in ac cor -
dance with all lo cal codes. In the ab sence of local
codes, re fer to NFPA 31.
CAUTION:
The recommended temperature for normal residen -
tial use is 120°F. The dial on the aquastat does not
always reflect the outcoming water tem per a ture,
which could occasionally exceed 120°F. The vari a -
tion in outcoming tem per a ture could be based on
factors including but not limited to us age pat terns
and type of installation. Test your water at the tap
nearest to the water heater. (See page 5 for mea -
sur ing the outcoming water tem per a ture).
23420
Phone: 608/257-2225 • Fax: 608/257-5304 • www.bockwaterheaters.com
BOCK RESIDENTIAL OIL-FIRED
Model numbers: 32E, 32PPC, 33E, 50ES,
51EC, 51PPC, 120E
Bock Water Heaters, Inc.
110 South Dickinson Street • Madison, WI 53703
INSTALLATION, OPERATION &
MAINTENANCE IN STRUC TIONS
WATER HEATERS
WARNING:
Hotter water increases the risk of scald injury. Be -
fore changing the temperature setting, read the
in struc tion manual. Tem per a tures at which injury oc -
curs vary with the in di vid u al's age and length of
ex po sure.
The slower reaction times of children, elderly and
physically or mentally impaired persons in creas es
the scald ing hazard to them. It is rec om mend ed low er
wa ter temperatures be used where these sit u a tions
exist.
Households with small children or invalids may re -
quire a tem per a ture setting less than 120°F to pre vent
accidental contact with hot water.
To lower water temperature use point-of-use tem -
per a ture limiting devices.
WARNING:
Flammable vapors may be drawn to this wa ter heat -
er from other areas of the struc ture by air currents.
Do not store or use any flam ma ble liquids in the
vicinity of this heater.
WARNING:
Water heater blankets may not be used on the
heater and may cause fire, asphyxiation, per son al
injury or death.
Rev 11 (1/2024)