Laars Pennant PNCP 1000, Инструкция по установке и эксплуатации

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Pennant Pool Heater
Page 11
13" W.C (3.2kPa). The minimum inlet gas
pressure is 5" W.C. (1.2kPa).
3. Refer to Table 7, size supply.
4. Run gas supply line in accordance with all
applicable codes.
5. Locate and install manual shutoff valves in
accordance with state and local requirements.
6. A sediment trap must be provided upstream of
the gas controls.
7. All threaded joints should be coated with piping
compound resistant to action of liquefied
petroleum gas.
8. The appliance and its individual shutoff valve
must be disconnected from the gas supply piping
during any pressure testing of that system at test
pressures in excess of 1/2 PSIG (3.45kpa).
9. The unit must be isolated from the gas supply
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 (3.45kpa).
10. The appliance and its gas connection must be
leak tested before placing it in operation.
11. Purge all air from gas lines.
Caution
Do not use open flame to check for leaks.
NOTE : The Pennant appliance and all other gas
appliances sharing the gas supply line must be firing
at maximum capacity to properly measure the inlet
supply pressure. The pressure can be measured at
the supply pressure port on the gas valve. Low gas
pressure could be an indication of an undersized gas
meter, undersized gas supply lines and/or an
obstructed gas supply line. The Pennant may not fire if
the gas pressure lower than 5" w.c.
SECTION 4.
Water Connections
4.1 Piping
Hot water piping should be supported by suitable
hangers or floor stands. Do not support piping with
this appliance. Due to expansion and contraction of
copper pipe, consideration should be given to the type
of hangers used. Rigid hangers may transmit noise
through the system resulting from the piping sliding in
the hangers. It is recommended that padding be used
when rigid hangers are installed. Maintain 1"
clearance to combustibles for hot water pipes.
Pipe the discharge of the relief valve (full size) to
a drain or in a manner to prevent injury in the event of
pressure relief. Install shutoff valves where required
by code.
Pennant Pool Heaters are equipped with mounted
pumps, which serve the heater plus 30 feet of full-
sized piping with a normal number of fittings. If the
pool’s loop is more than 15 feet away from the heater,
please contact the factory.
A mixing system is mounted on the heater. The
system consists of a three-way valve, temperature
control and piping. The temperature sensor for the
control is in the heater inlet. When the control detects
water temperature that is below 120°F (49°C), it will
direct the three-way valve to actuate, which sends
water from the outlet of the heater back to the inlet.
The outlet water that is diverted to the inlet mixes with
the return water from the pool, and keeps the inlet
temperature at or above 120°F (49°C) (see Figure 5).
This keeps cold return water from causing condensing
on the outside of the Pennant heat exchanger.
IMPORTANT NOTE: Since heater outlet
temperatures can reach 150°F (66°C) in some cases,
copper or CPVC are recommended materials for
heater connection piping. PVC material may be used
for the inlet valve and the piping upstream of it.
When pipe, fittings, grids or any other element of
the filter system are made of plastic materials, they
may be damaged by the momentary “back siphoning”
Figure 5. Mixing System. Figure 4. Typical Gas Train Configuration.
Mixing Controller
Sensor (120°F)
Pool Loop / Inlet
(2 used)