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7. GAS SUPPLY PIPING
All piping must be installed according to applicable local and national codes
•
A listed flexible connector (field supplied) must be installed between the heater and gas
•
supply piping. For outdoor installation the connector must be in compliance with ANSI
Z21.75 / CSA 6.27. An optional 3/8" x 24" black finish flexible gas connector (part number
903000012 - approved Indoor/Outdoor) is available from Rinnai.
A drip-pocket must be provided in the gas piping at the inlet connection
•
Provide a 1/8" NPT plugged tapping, accessible for test gage connection, immediately up-
•
stream of the gas supply connection to the heater.
On propane-fired units, a main line filter is recommended (field supplied)
•
Piping joint compounds must be resistant to the action of liquefied petroleum gases
•
All piping joints must be tested for leaks with a soap and water solution.
•
CAUTION:
DO NOT INSTALL ANY GAS PIPING IN HEAT ZONES
7.1 GAS PRESSURE
The maximum supply pressure must be limited to 14"w.c. (0.5 psi). If the line pressure is
above 14"w.c., then a separate pressure reducing regulator must be installed. The minimum
pressure at the inlet to the heater regulator must be equal to or greater than 6.0"w.c. for natu-
ral gas and 11.0"w.c. for propane gas.
Proper manifold pressure must be established during commissioning, and will be maintained
when the main burner is operating under the following supply pressure:
Table 5
MODELS
RSEP1S25X, RSEP1S35X
RSEP2S50N (2-Stage)
Natural Gas: Orifice sized for 1000 BTU/CU.FT.
Propane Gas: Orifice sized for 2500 BTU/CU.FT.
8. BASIC ELECTRICAL REQUIREMENTS - see also Section 16 page 25
All electrical installations must meet local codes and the latest edition ANSI/NFPA N0 70 in the
U.S.A.
TRANSFORMER SPECIFICATIONS (field supplied)
Single heater requires 24 Volt, 60 Hz electrical transformer sized at 40 VA.
Multiple heaters in a zone are powered by a single transformer (field supplied). The proper
transformer is 24 Volt AC, 60 Hz, sized at 40VA for the first heater plus 20VA for each addition-
al heater in the zone - round up the calculated value to the next higher available sized trans-
former. For example, four heaters in a zone require a transformer of : 1 x 40VA + 3 x 20 VA =
100 VA . It is not recommended to install more than 12 heaters per zone.
SE+ Series Infrared Gas Heater Installation and Operation Manual
GAS TYPE
NATURAL GAS
PROPANE GAS
NATURAL GAS (ONLY)
"w.c.
LINE PRESSURE
MINIMUM
MAXIMUM
6.0
14.0
11.0
14.0
6.0
14.0
14
"w.c.
MANIFOLD PRESSURE
AT GAS VALVE TEST PORT
5.0
10.0
5.0 High; 3.0 Low
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