LAARS Stor - Installation, Operation and Maintenance Instructions - Manual (Page 15)

15
SECTION IV
PRE-INSTALLATION
UNPACKING
INSPECT SHIPMENT carefully for any signs of damage. If
damage is noted, do not install the product. Contact the shipper or
manufacturer. All equipment is carefully manufactured, inspected,
and packed. Our responsibility ceases upon delivery of the packaged
heater to the carrier in good condition.
NOTE: Any claims for damage or shortage in shipment must be filed
immediately against the carrier by the consignee.
IMPORTANT DECISIONS REQUIRED BEFORE
INSTALLATION
SIZING
1. Boiler DOE Heating Capacity – The indirect-fired water heater will
provide the rated performance only if used in conjunction with a heat
source with a DOE heating capacity (Boiler Output) at least as much
as the minimum noted in Table 3. If the heat source has less capacity,
the output of the tank will be reduced. To determine the approximate
reduction in output from the tank use the following formula:
New Rating = (maximum continuous draw rating) x
Actual Boiler Output Capacity
Minimum Boiler Output Capacity
For example, what would the continuous draw rating be if a 50-gallon
indirect-fired heater were installed with a heat source having a DOE
heating capacity of 125,000 BTU/h?
Answer:
New Rating
= 235 gal/hr x (125,000 BTU/h)/(157,000 BTU/h)
= 235 gal/hr x 0.796 = 187 gal/hr