Checklist Dm Series Startup

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DM Millivolt Ignition Flue Damper Commercial Installation
Checklist
Important - Read the Installation and Operation Manual before installing and operating this
water heater.


Product Handling - Carefully uncrate the water heater. Move the water heater in place with a hand truck. If
combustible flooring is used, a thermal break leg kit must be used before setting the water heater into place. The
appropriate thermal break leg kit has been included with this water heater. See the Installation and Operation Manual
for specific details.



Electrical Requirements - No electrical requirements for the DM-Millivolt Series.



Gas Requirements - The minimum permissible gas supply pressure for the purpose of input adjustment is (1.0
inch WC) (0.25kPa) above the operating manifold pressure. The maximum permissible gas supply pressure is (14.0
inch WC) (3.5 kPa) for natural gas and liquefied petroleum gases/propane gas. See the rating plate and gas valve for
the manifold pressure and gas type. The gas supply lines must meet all requirements of the National Fuel Gas Code
(NFPA-54/ANSI Z223.1-latest edition). In Canada comply with the Natural Gas and Propane Installation Code
(CAN/CGA B149.1-00 - latest edition).
o

Record the Rating Plate Manifold Pressure:______________________

o

Record the Rating Plate Gas Type: _____________________________

o

Record the Measured Gas Pressure: _____________________________



Venting Requirements -



Service / Mechanical Room - Provide adequate space for servicing the water heater. See the Installation and

This is an atmospheric vent unit. The venting system must be installed properly
following all local codes. In the absence of local codes the ventilation system must be installed in compliance with the
National Fuel Gas Code (NFPA-54/ANSI Z223.1 - latest edition). In Canada comply with the Natural Gas and
Propane Installation Code (CAN/CGA (B149.1-00 - latest edition). Failure to properly install the venting system
could result in property damage, personal injury, or death.

Operation Manual for specific details. A minimum of (18.0 inch) (45.7 cm) overhead room is required to remove the
anode rods for servicing.


Combustion Air Supply -

Provide an adequate air supply for combustion and ventilation. An insufficient
supply of air will cause recirculation of combustion products resulting in contamination that may be hazardous to life.
The flow of combustion and ventilating air must not be obstructed. See the Installation and Operation Manual for
specific details.

For more detailed information, read the Installation and Operation Manual provided with
this water heater. Also consult local, NFGC and NEC codes.
Questions? Contact Bradford White Technical Service at (800) 334-3393.



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