Hatco POWERMITE PMG-100 Installation, Operating, Service And Parts Manual page 19

WARNING/CAUTION
The gas used with this unit must be the type
specified on the spec plate on this unit. To
avoid personal injury or damage to the unit,
never use any other than the specified gas.
The heater and its gas connection must be leak
tested before placing the booster heater in
operation.
The booster heater and its individual shut-off
valve must be disconnected and isolated from
the gas supply piping system during any
pressure testing of the system at test
pressures in excess of 1/2 PSI (3.5 kPa.).
This appliance must be isolated from the gas
supply piping system by closing its individual
manual shutoff valve during any pressure
testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig
(3.5 kPa).
Dissipate test pressure from the gas supply
line before re-connecting the heater and its
manual shut-off cock to the gas supply line.
FAILURE TO FOLLOW THIS PROCEDURE MAY
DAMAGE THE GAS
PRESSURED GAS
COVERED BY THE WARRANTY.
The heater and its gas connections shall be
leak tested before placing the appliance in
operation. Use soapy water or commercially
available fluid for leak test. DO NOT use open
flame to test for leaks.
VALVE. OVER
VALVES ARE NOT
Incoming Gas Pressure Specifications
Gas Type
Natural
Propane/LP
The maximum inlet gas pressure must not exceed
the values shown above. The minimum gas
pressure listed is for the purposes of input
adjustment.
The manifold inside the heater is provided with a
pressure tap to measure the gas pressure. The
chart below lists the proper pressure amounts at the
manifold pressure tap when testing.
Operating Pressure Specifications at Manifold
Inches Water Column At Pressure Tap
Gas Type
Natural
Propane/LP
See Figure 6 for hook-up location and pressure tap
location.
17
INSTALLATION
Inches Water Column
Minimum Maximum
5.0 10.5
11.0 13.0
High Burn
3.5
10.0
Form No. PMG-100/200M-0805