Jandy HI-E2, Инструкция по установке и эксплуатации

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Page 12
ENGLISH
Jandy
®
Pro Series, Hi-E2
®
and Hi-E2R Gas-Fired Heater
|
Installation & Operation Manual
Figure 14. Field wiring connections.
ATTACH GROUND-
ING WIRE TO
GREEN GROUND-
ING SCREW
(115 VAC ONLY)
Table 4. Gas Supply Pressure Requirements.
Supply Pressure Minimum Maximum
Natural Gas 5 inches WC
(125 mm WC)
10.5 inches WC
(265 mm WC)
LP Gas 11 inches WC
(280 mm WC)
14 inches WC
(350 mm WC)
Gas piping must be large enough to provide the required
gas flow rate without excessive pressure drop. Table 5
specifies pipe sizes which will limit pressure drop to 0.5
inches WC (125 Pa), based on the National Fuel Gas
Code, ANSI Z223.1/NFPA-54.
Do not use flexible appliance connectors on any gas
connections unless the connector is CSA approved for
outdoor installation and is marked with the BTUH capacity
(which must be equal to or greater than the heater rated
input) and the type of gas (Natural or LP). Also, any
flexible connectors, such as CSST buried underground
must be certified for underground installation and meet all
applicable codes. Please note, use of flexible connector still
requires the installation of a sediment trap per NFPA 54.
Table 5. Required Gas Pipe Size.
Model
Natural Gas LP Gas
0-50'
(0-15 m)
50-100'
(15-30 m)
100-200'
(30-60 m)
0-80'
(0-15 m)
50-100'
(15-30 m)
100-200'
(30-60 m)
350 1-1/4" 1-1/4" 1-1/2" 1" 1-1/4" 1-1/4"
Support gas piping properly so its weight does not bear on
the heater. Install a drip leg, a non-restrictive shutoff valve
and a union on the gas supply line outside of the heater.
See Figure 13.
Before operating the heater, test the gas supply system,
including all connections, for leaks using a soap solution.
Do not use a flame or any ignition source for leak
detection. Disconnect the heater and its individual gas
shutoff valve during pressure testing if the test pressure is
higher than 1/2 psig (3.34 kPa). If the pressure is 1/2 psig
(3.45 kPa) or lower, close the manual valve on the heater
gas control during testing.
When the heater is started, check the supply pressure
to verify that it is adequate during heater operation.
Undersize piping, a restrictive fitting or an undersize gas
meter can cause low operating pressure.
High Elevation
To assure good combustion and general operation, gas
appliances may require manual de-rating when installed
at high elevation. This is not necessary with the Hi-E
2
because it has a special venturi-type combustion system
which self-compensates for changes in barometric
pressure. Air flow through the venturi pulls the correct
flow of gas into the burner regardless of air density.
Good quality combustion and high efficiency are assured
without special adjustment or changes to the heater.
2.9.1 Special Precautions for LP Gas
LP Gas is heavier than air and can therefore more readily
collect or “pool” in enclosed areas if provision for proper
ventilation is not made. Installation of pool heaters in
enclosed areas such as pits is not recommended. However,
if such an installation is required be sure to pay special
attention to proper ventilation requirements for LP gas.
Locate heaters a safe distance from LP gas cylinders and
filling equipment. Consult the National Fuel Gas Code
(NFPA 54 / ANSI Z223.1, latest edition), the Natural
Gas and Propane Installation Code in Canada (CAN/
CSA B149.1, latest edition), and any other local codes
and fire protection authorities about specific installation
restrictions in your area.
2.10 Electric Wiring
WARNING
ELECTRICAL SHOCK HAZARD.
This heater contains
wiring that carries high voltage. Contact with these
wires may result in severe injury or death.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
2.10.1. Electrical Power
Electrical wiring must be in accordance with the latest
edition of the National Electrical Code® (NEC®), ANSI/
National Fire Protection Association® (NFPA) 70, unless
local code requirements indicate otherwise; and in Canada
with latest edition of CSA C22.1 Canadian Electrical
Code.