Service manual

VANTAGE
®
EV INSTALLATION MANUAL ROBERTS-GORDONpg 44
The total heating system supplied shall be design
certified by the American Gas Association and the
Canadian Gas Association. The heating system shall be
of negative pressure, dry, non-condensing design and
shall utilize one or more burners on a single vacuum
pump.
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:
EV-80 80,000 BTU/Hr.
EV-110 110,000 BTU/Hr.
EV-140 140,000 BTU/Hr.
EV-170 170,000 BTU/Hr.
EV-200 200,000 BTU/Hr.
3. Burner(s) shall be equipped with fully automatic direct-
spark 100% shut-off ignition device. Power supplied to
each heater shall be 120V, 60 HZ, single phase.
Burners shall be rated for 1.0 Amp
4. Burner shall be equipped with combustion air proving
safety pressure switch, and viewing window for flame
observation.
5. When specified, in contaminated environments, the
burner shall be capable of supplying outside air to
each burner for the support of combustion.
6. All burners shall be pre-wired with an electrical supply
junction box.
7. At customer’s choice (or depending on system
requirements) burner system may either be controlled
by pre-wired electronic control panel or by means of
transformer relays. Low voltage thermostats are to be
used.
8. Gas supply to the burners shall be as follows:
1/2" NPT gas connector size (EV-80 and -110)
3/4” NPT gas connector size (EV-140, -170 and -200)
Natural Gas: 4.6" W.C. MIN, 14.0" W.C. MAX
5.0" W.C. MIN. (EV-200)
LP Gas: 11" W.C. MIN, 14.0" W.C. MAX
B. Heat Exchanger
1. Radiant tubing shall be 4" diameter, 16 gauge,
aluminized steel first 10 feet, hot rolled steel remainder
of unit (or when specified, all aluminized for entire
radiant tube length). Sections shall be joined by
stainless steel wrap-around couplings.
2. Reflector to be of 0.024” thick aluminum 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 end caps to prevent heat loss
due to convection.
4. Steel turbulators to be used as specified for even heat
distribution.
5. Manifold tubing connecting heaters to vacuum pump
shall be 4" diameter, 16 gauge corrosion resistant
tubing (either porcelain lined or aluminized steel shall
be acceptable).
C. Vacuum Pump
1. Systems having a total heater input greater than
560,000 BTU/Hr shall be equipped with a vacuum
pump constructed of heavy duty cast iron. Pump shall
be acoustically isolated from system with flexible
boots. Pump motor shall be 115/230V, 60Hz, single
phase, 3450 RPM, reversible rotation, 3/4 HP, TENV
capacitor start, sealed ball bearings and thermally
protected and shall be secured with flexible mounts for
acoustical isolation.
2. Systems having a total heater input less than or equal to
560,000 BTU/Hr shall be equipped with a vacuum
pump constructed of 16 ga. stamped steel. Pump shall
be acoustically isolated from system with flexible boots.
Pump motor shall be 115/230V, 60Hz, single phase,
3450 RPM, reversible rotation, 1/3 HP, TENV capacitor
start, sealed ball bearings and thermally protected and
shall be secured with flexible mounts for acoustical
isolation.
Section 16. Engineering Specifications