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All gas installations:
The H-series heater is to be installed with a gas
connection located on the left side. Insert the pipe to
the gas valve through the grommet in the cabinet
side. It is recommended that a ground-joint union be
installed inside (or outside if space does not allow)
the heater cabinet to facilitate servicing the burner
assembly tray. See Figure 26.
A C.S. A. Certified main gas valve shutoff must be
installed outside of cabinet and within 6 feet of the
heater. Gas shutoff valve must have and I.D. large
enough to supply the proper amount of gas volume to
the heater.
NOTE: Apply joint compounds (pipe dope) spar-
ingly and only to the male threads of pipe joints. Do
not apply joint compound to the first two threads. Use
joint compounds resistant to the action of liquefied
petroleum gas. Do not overtighten the gas inlet pipe
or damage may result. See Figure 26.
T
o prevent dirt and moisture from entering gas
valve, a sediment trap should be installed in the gas
line close to the valve. See Figure 26.
Do not use flexible appliance connectors on
any gas connections unless the connector is
C.S.A. approved for outdoor installation, is
marked with BTUH capacity (which must be equal
to or greater than the heater rated input), and the
type of gas (Natural or LP) to be used.
Reduction of gas supply pipe or tubing to the inlet
of the heater gas valve must be made at the valve
only and must match the valve inlet size (
3
⁄4”).
If more than one appliance is installed on the gas line,
consult the local gas company for the proper gas line size.
Any questions concerning the installation of the
proper gas line size can be directed to Hayward
T
echnical Service.
NATURAL GAS
The gas meter must have the capacity to supply
enough gas to the pool heater and any other gas
appliances if they are on the same pipeline (Example:
225 meter = 225,000 BTUH). If doubt exists as to the
meter size, consult local gas utility for assistance.
Hayward will not be responsible for heaters that soot
up due to improper meter and gas line sizing resulting
in improper gas volume.
PROPANE GAS
All Propane gas tanks must be located outdoors
and away from pool/spa structure and in accordance
with the standard for storage and handling of propane
gas, ANSI/NFPA 58 (latest edition) and applicable
local codes. If propane gas tank is installed under-
ground, the discharge of the regulator vent must be
above the highest probable water level.
Propane tanks must have sufficient capacity to
provide adequate vaporization for the full capacity of
the equipment at the lowest expected temperatures.
Consult a propane company expert for correct sizing.
NOTE: Whenever a high-pressure double regula-
tion system is utilized for propane gas, consult a
propane professional for accurate pipe and pressure
sizing. Make sure that 1
st
and 2
nd
stage regulators are
large enough to handle the BTUH input listed for the
heater(s) being used.
Hayward will not be responsible for heaters that
soot up due to improper gas line or propane tank siz
-
ing resulting in improper gas volume.
Water piping:
The H-Series heater is designed for use with pool
and spa/hot tub water only, as furnished by municipal
water distribution systems. The warranty does not
cover heater use with mineral water
, sea, salt, or
other non-potable waters.
Do not install any restriction in the water pipe
between heater outlet and pool/spa with the
13
Gas supply and piping:
R
efer to the charts on Figure 25 for gas pipe sizing for low pressure natural gas, low pressure single state
p
ropane gas, and high pressure two stage propane gas systems
.
12
S
ediment Trap
Figure 26