Specification Sheet

Specifications for
Serengeti-IR™ UNITARY RESIDENTAL SYSTEMS
REVISED – 3 November 2015 SPEC-SERENGETI.docx
PART 2 - PRODUCT
2.1 - BURNER
2.1.1 Burner shall be capable of firing at 40,000 BTU/hr (11.72 kW) up to and including 60,000 BTU/hr
(17.56 kW) at 5,000 BTU/hr (1.46 kW) increments with natural gas or LP gas.
2.1.2 Burner power requirements 115 Volt, 60 Hz AC, 1.8 A.
2.1.3 Burner shall include the following features:
a) Fitted with a 4" (102 mm) diameter combustion air inlet with a fixed combustion air-metering
orifice.
b) Burner shall be fitted a differential air pressure switch so as to prove adequate combustion air is
present before burner fires.
a) Burner shall be fitted with solid state electronic controls with spark ignition & 100% lockout in
event of flame failure.
b) Regulator to be factory set at 3.5" W.C. (6.54 mm/Hg) for natural gas and 10.0" W.C. (18.68
mm/Hg) for propane gas.
c) Gas valve, ignition controls, and differential pressure switch shall be enclosed within the burner
compartment and SEGREGATED from the combustion air supply.
d) Heavy-duty nozzle pre-mix combustion system - minimum 0.125" (3.17 mm) metal thickness.
e) Electrode and flame rod to be made of NiChrome.
f) Burner shall have a minimum 15-second pre-purge before ignition.
g) Burner shall casing to be constructed of 16 Ga. (1.587mm) aluminized steel, powder coated.
h) Burner shall be fitted with inspection window for visual inspection of spark and flame.
i) ½" NPT gas inlet on the back, side, bottom or top of burner assembly - GAS INLET IS NOT TO
BE ON THE COMBUSTION TUBE SIDE OF BURNER.
2.1.4 Burners venting into common stack shall be operated with one thermostat.
2.2 - SYSTEM CONTROLS
2.2.1 Shall be supplied with:
a) Supplied with pre-wired controls. 115V, 16 amp, 60 Hz.
b) Solid state spark ignition and flame rectification (separate probe) with 100% flame lockout and
30 second pre-purge (24 VAC, 22 VA).
c) Optional thermostat, 115V, 8 amp minimum rating.
2.3 - RADIANT TUBE HEAT EXCHANGING NETWORK
2.3.1 All radiant tubing (including combustion tube) shall be factory "heat treated" for high emissivity (0.83
to 0.90) finish inside and outside. Painted and non-treated radiant tubes shall not be allowed.
2.3.2 Combustion tube shall be 10' (3048mm) long 16 gauge aluminized steel 3.5" (89 mm) OD swaged
one end.
2.3.3 Balance of radiant tubing shall be constructed of patented, high strength, long life, spiral wound 22
gauge aluminized steel, 3.5" (89 mm) OD.
2.3.4 Assembly: Assemble and install the heating system in accordance with the installation manual and
shop drawings.
a) Combustion tube to be supported with tube and reflector hangers on maximum centers of:
- Straight tube systems - 54" (1372 mm)
- "U" tube systems - 66" (1376 mm)