DT Series - Installation manual (V4_2022)
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installation and/or Nature of failure along with the description of the parts required. Be
advised that some parts may not be stocked items, that these parts must be made or ordered;
variable delays can be expected depending on the nature of the equipment damage or
defective part.
DANGER!
Always disconnect power before working on or near this equipment. Lock and tag the
disconnect switch or breaker to prevent accidental power up. Turn off gas supply whenever
power is disconnected.
When servicing the unit, the internal components may be hot enough to cause pain or
injury. Allow time for cooling before servicing.
2.7.
NORMAL USAGE
This indirect gas-fired heater is intended for indoor or outdoor installation, in air ducts, or in
air handling unit made by original equipment manufacturers (OEM) of listed heating
equipment in cabinet. It must be mounted on the positive side of the circulating air blower
and may be downstream of refrigeration system. This product is designed to serve as a heating
for make-up air or/and recirculated air. The unit must be installed on non-combustible
surfaces, duct, or wall, and located in a neutral pressure environment. It can operate with a
minimum thermal efficiency of 80 % and use natural or propane gas. The heating output
capacities available range from 550 to 5,000 MBH (160 to 1,471 kW) and from 4,244 to 92,593
SCFM (2,003 to 43,690 L/s) of air at temperature differential of 50°F to 120°F (28°C to 67°C).
The maximum discharge temperature is limited to 130°F (55°C) at 3.00 in.w.c. (747 Pa)
maximum external static pressure.
The discharge temperature high limit protection is
factory set at 160°F (71°C).