1. INTRODUCTION
1.1 IMPORTANT SAFETY INSTRUCTIONS
WARNING
SAVE THESE INSTRUCTIONS
Technical data
WARNING
Hot water outlet 1/2 NPT male
3/4 NPT female tapping for
relief valve
FIG. 1/1
Temperature & pressure relief valve,
3/4 NPT male
Cold water inlet 1/2 NPT male
Temperature & pressure relief
valve discharge line to drain
NTI COMPACT 2.5 - NTI COMPACT 4
Tank capacity 2.7 gal 4.0 gal 7.0 gal *
Dimensions
13¾ ” W x 13¾ ” H x 10¾ ” D 13¾ ” W x 13¾ ” H x 13½ ”D 17⅗ ” W x 17⅗ ” H x 14½ ” D
Weight (empty) 15.5 lbs 17.3 lbs 29.5 lbs
Maximum Water pressure 150 psi 150 psi 150 psi
Recovery rate at 90°F rise 6.8 gal/h 6.8 gal/h 6.8 gal/h
Temperature range 65 – 145 °F 65 – 145 °F 65 – 145 °F
Water connections ½
” NPT ½ ” NPT ¾ ” NPT
Relief valve Installed Installed Included
Nominal Voltage (1 phase) 110/120 Vac 110/120 Vac 110/120 Vac
Nominal current 12 A 12 A 12 A
Power at 120 Vac 1,440 W 1,440 W 1,440 W
Electrical connection Plug-in Plug-in Hard wired
MODEL NTI COMPACT 2.5 NTI COMPACT 4 NTI COMPACT 6
* 5.1 gal if installed vertical
When using electrical appliances, safety precautions to reduce the risk of fire, electric shock or injury to persons should be followed,
including:
1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.
2. This water heater must be grounded. Connect only to properly grounded outlet. See “GROUNDING INSTRUCTIONS” found on
“INSTALLATION INSTRUCTIONS”.
3 .Install or locate this water heater only in accordance with the provided installation instructions.
4. Use this water heater only for its intended use as described in this manual.
5. The models NTI COMPACT 2.5 and NTI COMPACT 4 come equipped with a power cord. Do not use an extension cord. If no
outlet is available adjacent to the water heater, contact a qualified electrician to have one properly installed near the heater. The
model NTI COMPACT 6 must be hard-wired. See installation instructions.
6. As with any appliance, close supervision is necessary when used by children.
7. Do not operate this water heater if it is has a damaged cord or plug, if it is not working properly, or if it has been damaged or
dropped.
8. This water heater should be serviced only by qualified service personnel. Contact a service person for examination, repair or
adjustment.
9. Failure to inspect the anode rod at least once a year could cause the tank to fail and leak. This condition is not covered under the
manufacturer's warranty.
10.Any water heater should be installed in such a manner that if it should leak, the resulting flow of water will not cause damage to
the area in which it is installed.National Plumbing codes require a drain pan for any water heater installation. Failure to install one
is the sole responsibility of owner and/or installer. Reference UPC 2000 (Uniform Plumbing Code) Section 510 - Protection from
Damage or IPC 200 (International Plumbing Code) Section 504- Safety Devices.
The installer should review the contents of this manual with the owner upon completion of installation, and the manual should be
left with the owner and placed in a location close to the installation.
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