Ratings - Lochinvar Shield SNR200-100 Installation And Service Manual

Ratings

Model Number
Note: Change "N" to
"L" for L.P. gas models.
SNR150-100
SNR200-100
SNA285-125
SNA400-125
SNA500-125
Maximum allowed working pressure is located on the rating plate.
NOTICE
Notes:
1. Shield water heaters require special gas venting. Use
only the vent materials and methods specified in the
Shield Installation and Service Manual.
2. Standard Shield water heaters are equipped to operate
from sea level to 4,500 feet only with no adjustments.
The water heater will de-rate by 4% for each 1,000 feet
above sea level up to 4,500 feet.
3. High altitude Shield water heaters are equipped to
operate from 3,000 to 12,000 feet only with no field
adjustments. The water heater will de-rate by 2% for
each 1,000 feet above 3,000 feet. High altitude models
are manufactured with a different control module for
altitude operation, but the operation given in this
manual remains the same as the standard models. A
high altitude label (as shown in FIG. A) is also affixed
to the unit.
CSA
Input Modulation Btu/hr
(Note 2)
Min Max
30,000 - 150,000
40,000 - 199,999
57,000 - 285,000
80,000 - 399,999
100,000 - 500,000
TM
Water Content Water
Gallons Connections
92 1-1/2"
93 1-1/2"
124 2"
125 2"
126 2"
Figure A High Altitude Label Location
Installation & Service Manual
Gas
Vent/Air Size
Connections
(Note 1)
1/2"
1/2"
3/4"
1"
1"
UNIT EQUIPPED FOR
HIGH ALTITUDE
3,000 FT. TO 12,000 FT.
3"
3"
4"
4"
4"
7