
R O B E R T S
-
G O R D O N
S E C T I O N
1 4 :
E N G I N E E R I N G S P E C I F I C AT I O N S
pg 41
The total heating system supplied shall be design
cer tified by the American Gas Association and the
Canadian Gas Association and shall be approved for both
indoor and outdoor installation.
A. Burner and Burner Controls
1. Burners shall be capable of firing with one of the fuel
options as specified on the purchase documents:
Natural Gas or LP.
2. Burners shall be supplied to fire at any one of the input
firing rates as specified:
HE- 40
40,000 BTU/Hr.
HE- 60
60,000 BTU/Hr.
HE- 80
80,000 BTU/Hr.
HE-100
100,000 BTU/Hr.
HE-125
125,000 BTU/Hr.
HE-150
150,000 BTU/Hr.
HE-175
175,000 BTU/Hr.
3. Burners shall be equipped with a system control that
combines gas flow control and electronic burner
ignition sequencing functions into a single unit. This
control shall provide all gas ignition safety functions
by controlling gas flow, ignition source and the
combustion air blower. The control shall also monitor
the pressure switch to assure proper burner operation.
Such control shall provide prepurge and timed trial for
ignition with multiple ignition trials and auto reset from
lockout. This control shall contain an LED indicator to
provide system status.
4. Power supplied to each burner shall be 120V, 60HZ,
single phase. Burners shall be rated for 1.0 Amp (run)
5.0 Amp (start).
5. Burner shall be equipped with thermal overload motor
protection, balanced air rotor, combustion air proving
safety pressure switch, and viewing window for flame
observation.
6. When specified, in contaminated environments, the
burner shall be capable of supplying outside air to
each burner for the support of combustion.
7. At customer's choice, burners may be controlled with
either an optional line voltage thermostat or by
optional low voltage thermostats.
8. Burners shall be equipped with vinyl coated stainless
steel flex gas connectors and the pipe connection shall
be 3/4" NPT.
9. Gas inlet pressure shall be as follows:
Natural Gas: 4.6" W.C. MIN, 14.0" W.C. MAX
5.0" W.C. MIN for HE-175,
LP Gas:
11" W.C. MIN, 14.0" W.C. MAX
B. Heat Exchanger
1. Radiant tubing shall be 4" diameter, 16 gauge, Alumi-
Therm
®
Steel for the first 10', aluminized for the
remainder of the unit. Sections shall be joined with
stainless steel wrap-around couplings.
2. Reflector to be of .024 stainless steel, type 304
material and designed to direct all radiant output below
horizontal centerline of radiant tube. Reflectors shall be
certified for 0° or 45° mounting.
3. Reflectors shall have stainless steel end caps to
prevent heat loss due to convection.
4. Steel turbulators to be used as specified for even heat
distribution.
5. Heater to be vented according to manufacturer's
instructions.
Section 14. Engineering Specifications