RBI Gas boilers - General Piping Requirements; Freeze Protection Measures; Condensate Piping Installation; Pressure Relief Valve Installation

Finned copper tube gas boilers & water heaters – Boiler Manual
Fi
nne
d
co
pp
er tu
b
e gas
b
o
il
ers
&
water
h
eaters –
B
o
il
er
M
anua
l
11
F
Figure 7 Outdoor Venting
Figure 8 Multiple Outdoor Units
RIOM-60 REV.
A
2 FT
(0.62 M)
3 FT
(1 M)
GENERAL PIPING REQUIREMENTS
Improper piping of this boiler/water heater will void
the manufacturer’s warranty and can cause boiler
failure resulting in  ooding and extensive property
damage! Excessive water hardness causing scaling
in the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty, see Table 8.
Excessive pi ing and erosion of the internal surface of
the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty if the result of high
water  ow rates.
Shut o valves and unions should be installed at the
inlet and outlet connections of the boiler/hot water
heater to provide for isolation of the unit should
servicing be necessary.
Freeze Protection
Installations in areas where the danger of freezing exists are not
recommended unless proper freeze protection is provided.  e
following precautions MUST be observed:
1.
A continuous  ow of water through the unit MUST be maintained!
 e pump responsible for  ow through the boiler/water heater
must run continuously!
2. An ethylene glycol/water mixture suitable for the minimum
temperature that the unit will be exposed to must be used.
 e pump must be capable of producing a minimum of 15%
more  ow and overcoming a 20% increase in head loss.
Domestic water systems must be isolated from the water heater
by the use of a heat exchanger or other approved method.
3. If the unit must be shut o for any reason the electric, gas and
water supplies MUST be shut o and the unit and its pump
completely drained.
Improper outdoor installation of this unit can cause
boiler failure voiding the manufacturer’s warranty!
Condensate Piping
 e condensate trap provided with the boiler must be a ached to
the bo om pan and piped to a suitable  oor drain or condensate
pump. If a condensate neutralization device is installed, it must be
positioned prior to boiler room drain. Condensate  ll trap must
be maintained with  uid.
Relief Valve
Pipe the discharge of the pressure relief valve as shown in Figure 9.
Never install any type of valve between the boiler/
water heater and the relief valve or an explosion causing
extensive property damage, severe personal injury or
death may occur!