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520
199,000BTU
10' Length
5' Length
3/4" Pipe Size
A
1-1/4" Pipe Size
10' Length
5' Length
1" Pipe Size
1-1/4" Pipe Size
Gas Meter
FOR YOUR SAFETY, READ BEFORE OPERATING:
Do not use this water heater if any part has been submersed under water. Immediately call a
licensed professional to inspect the water heater and to replace any damaged parts.
1.
All pipes, pipe fittings, valves and other components, including soldering materials, must be
suitable for potable water systems.
2.
A manual shut off valve must be installed on the cold water inlet to the water heater between the
main water supply line and the water heater.
3.
In addition, a manual shut off valve is also recommended on the hot water outlet of the unit. If the
water heater is installed within, or subjected to, a closed loop water system, a thermal expansion
tank must be installed.
4.
Before installing the water heater, flush the water line to remove all debris, and after
installation is complete, purge the air from the line. Failure to do so may cause damage to the
heater.
5.
There is a wire mesh filter within the cold inlet to trap debris from entering your heater. This will
need to be cleaned periodically to maintain optimum flow.
Do not reverse the hot
outlet and cold inlet
connections to the 520
Water Heater. This will not
CAUTION
properly active the water
heater.
Gas Sizing Example
(Natural Gas)
Dryer
35,000BTU
15' Length
B
1" Pipe Size
10' Length
3/4" Pipe Size
Range
Furnace
65,000BTU
120,000BTU
WATER CONNECTIONS
Based on Energy Content of 1,000BTU/Cubic Ft:
Divide each appliance's BTU requirement by 1,000BTU to get
the appliances Cubic Ft. requirement.
Take into account the distance the appliance is from the gas
meter, look in the above gas chart to properly size the line.
For sections of the gas line supplying gas to more than one
appliance (Ex: Point A to Point B), add up the cubic ft.
10' Length
requirements of the appliances that are being supplied by that
1/2" Pipe Size
section, and size to the farthest appliance.
For Example: The section from A to B supplies gas to the
15' Length
furnace, range, and dryer. Adding up the BTU requirements
C
and dividing by 1,000 yields a cubic ft. requirement of 220
1/2" Pipe Size
cubic ft. of gas. The farthest appliance is the range, which is 50
ft. away from the meter. Looking at the above chart, and
under the column of 50ft., Section A to B needs to be 1" in
order to supply 220 cubic ft.
Water outlet
(HOT)
19
│
Page
Condensate drain port
Installation
GAS inlet
Water inlet
(COLD)
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