Heat-Flo 115-D, Installation, Operating And Servicing Instructions, Page: 7 / 32

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Pre-­‐installation Considerations
Inspect shipment carefully for signs of damage. All equipment is carefully inspected and packed.
Heat-­‐Flo’s responsibility ceases upon delivery of the water heater to the carrier in good
condition. Any claims for damage or shortage must be filed immediately against the carrier by
the consignee. No claims for variances or shortages will be allowed by the Manufacturer, unless
they are presented within sixty days after receipt of the equipment.
Installation must conform to the requirements of the authority having jurisdiction. In the
absence of such requirements, installation must conform to the National Plumbing Code and
the National Electrical Code ANSI/NFPA No. 70 (current edition).
IMPORTANT CONSIDERATIONS BEFORE INSTALLATION
1. Water heater sizing:
Choose the water heater model based on the expected water usage for the given site.
The average residence with one shower or more will require a Model 40 or larger. The
Model 30 should only be considered for residences with minimal water demand, or for
commercial applications without showers.
Factors that increase water demand dramatically include high flow shower heads, hot
tubs, and the use of more than one shower at a time. Increase the tank size if these
factors are present. Consult ASHRAE sizing guides and other references.
Dimensions, weights, ratings, and capacities are outlined in Tables 1, and 2 (Pg. 4).
2. Boiler sizing:
The water heater will provide the rated performance only if it is used with a boiler with
a heating capacity of at least as much as the capacity ratings in Table 2. If the boiler has
less capacity, the water heating output will be reduced. To determine performance with
other boiler outputs, refer to the expanded capacity tables at www.heat-­‐flo.com .
The maximum heat transfers through the coil (heat input) of the water heaters at 240 deg. F boiler supply
temperature and 210 deg. F potable water temperature are as follows:
•
Models 30 – 115 single coil units and models 60-­‐D, 80-­‐D, and 115-­‐D dual coil units are less than
96,000 BTU/HR.
•
Models 80-­‐HO, 115-­‐HO, 80-­‐HO-­‐C, and 115-­‐HO-­‐C high output units are less than 84,000
BTU/HR.
•
Models 85-­‐XHO and 115-­‐XHO, the extra high output series, are less than 175,000 BTU/HR.
Potable water temperature is limited to below 210 deg. F and nominal water containing capacity is below
120 gallons for all indirect models.
Accordingly, per Part HLW-­‐101.2, Section IV of the ASME Boiler and Pressure Vessel Code, all Heat-­‐Flo
indirect water heater products are exempt from compliance with the code.
Check with local codes for applicability.