3
PART 1
INSTALLATION
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE, COMBUSTIBLE, CORROSIVE AND
VAPOUR CAUSING LIQUIDS IN THE VICINITY OF
THIS APPLIANCE.
DANGER, WARNING AND CAUTION
The words DANGER, WARNING and CAUTION are
used to identify the levels of seriousness of certain
hazards. It is important that you understand their
meaning. You will find those words in the manual as
follows:
DANGER
Immediate hazards which WILL result in
death or serious injury.
WARNING
Hazards or unsafe practices which CAN result
in death or injury.
CAUTION
Hazards or unsafe pratices which CAN result in
personal injury, product or property damage.
1) HGRC LINE
The “HGRC” series boilers and water heaters are
natural gas or propane gas fired units and are available
with inputs ranging from 68,000 Btu/h to 340,000 Btu/h.
The model designations are as shown in Figure 1.
2) DESCRIPTION OF MAIN COMPONENTS
2.1) Heat exchanger
The heat exchanger consists of 6 finned copper tubes
mounted between 2 steel manifolds. A double pass
system is used. Standard components used in
conjunction with the exchanger include a temperature /
pressure gauge, a safety valve, a temperature limiting
device and a drain valve.
FIGURE 1
HGRC Series
HGRC 000 XX - XX X X X
Option N Standard aquastat
V Motorised vent damper
Y Motorised vent damper and 2 aquastats
Altitude N Normal (0 to 2000 feet)
H High (2000 to 4500 feet)
Gas N Natural
P Propane
Type C Constant pilot
of ignition E Intermittent pilot
EM Intermittent pilot + Modulation
Unit type AC Boiler
designation HW Hot water supply heater
Capacity (Input) in thousands of Btu/h
Series: Boilers or water heaters gas HGRC
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