BOCK EzFit EZ 75-76N Gebrauchsanweisung - Seite 3

Blättern Sie online oder laden Sie pdf Gebrauchsanweisung für Warmwasserbereiter BOCK EzFit EZ 75-76N herunter. BOCK EzFit EZ 75-76N 11 Seiten.

Seite drucken
FOR MANUAL 23405

SECTION I: SPECIFICATIONS

Hot
Draft Hood
B
E
Drain
Figure 1: All Models
Figure 1: All Models
Table 1: Dimensions
Model
EZ 75-76N
75
73
133 69.19 65.38 26.00 58.25 14.50 11.00 4.00
76,000
EZ 100-76N
100
73
153 69.81 66.00 28.00 57.94 14.50 11.00 4.00
76,000
For LP models change suffix "N" to "LP"
Working Pressure: 150 PSI (1034 kPa)
Test Pressure: 300 PSI (2068kPa)
For natural gas: Manifold pressure = 4" W.C. (1.00 kPa); Inlet pressure range 5-14" W.C. (1.25 - 3.49 kPa)
For propane gas: Manifold pressure = 10" W.C. (2.49 kPa); Inlet pressure range 11-14" W.C. (2.74 - 3.49 kPa)
T&P valve installed
All Bock products meet or exceed current ASHRAE standards.
These products are design certified by UL (Underwriters Laboratories) and meet ANSI Z21.10.3 requirements for operation up to 180°F (82°C).
Approved for use as an automatic circulating tank water heater or automatic storage water heater.
WARNING: Do not install on combustible flooring. Installation shall be in accordance with all national and/or local codes.
In the absense of local codes, refer to NFPA 54 and/or CSA B149.1.
CAUTION: The recommended maximum hot water temperature setting for normal residential use is 120°F (49°C). Bock recommends a
tempering valve or anti-scald valve be installed and used according to the manufacturer's directions to prevent scalding.
Page 4
F
Cold
Anode Rod (2)
OFF
G
T&P Relief
Valve
C
A
Gas/Temp.
D
Control
OFF
WARNING
READ ALL INSTRUCTIONS BEFORE LIGHTING
WARM
CAUTION
HOTTER WATER
INCREASES THE
SCALDING
INJURY
RISK OF
DIMENSIONS (inches)
1.00 1.00
0.50
391
1.00 1.00
0.50
485
Atmospheric Gas

SECTION II: GENERAL INFORMATION

WHEN YOU RECEIVE YOUR NEW WATER HEATER
Check the new equipment to see if all components are in good condition. If damage is
observed or parts appear to be missing, contact your wholesaler.
WATER TREATMENT/FILTRATION
In areas where poor water conditions are suspected (i.e. lime, iron, and other minerals), it is
essential that the water be tested and appropriate action taken to prevent damage to the
water heater and ensure the quality of the water.
TEMPERATURE CONTROL
The water heater is equipped with a gas thermostat to monitor tank temperature and control
operation of the main burner. For domestic hot water, the proper temperature setting is 120°F.
For commercial applications, the maximum approved temperature setting is 180°F.
A built in, non-cycling Energy Cut-Off (ECO) is standard on all gas thermostats. In the event
that the water temperature becomes excessive (200°F), the ECO will shut off all gas to the
water heater. If an ECO has detected an over-temperature condition and has opened, the
control will not function and a replacement will be required.
The thermostat is factory set at 120°F. See Figure 6 for thermostat letter and temperature
relationships. If hotter water is required a tempering device or anti-scald device must be
installed at the domestic hot water outlet of the heater or at the point of use. Table 3 details
the approximate relationship of water temperature and time with regard to scald injury. It
is important for the user to understand the necessity of tempering or anti-scald devices when
using hotter water in domestic water heating systems.
CAUTION: Hot water in excess of 120°F can cause scalding!
Bock recommends a tempering valve or anti-scald valve be installed and used according to
the manufacturer's directions to prevent scalding. Many state and local codes now require
installation of these devices. The tempering valve or anti-scald valve will ensure potable
water temperatures at the desired set point with a higher degree of accuracy.
Table 2: Scald Temperature/Time Relationships
APPROXIMATE
TEMPERATURE/TIME
RELATIONSHIPS TO
SCALDING
1 20 °F
More than 5 minutes
125°F
1
⁄
to 2 minutes
1
2
130°F
About 30 seconds
135 °F
About 10 seconds
140°F
Less than 5 seconds
145°F
Less than 3 seconds
150°F
About 1
⁄
seconds
1
2
155°F
About 1 second
Atmospheric Gas
Page 5