LAARS Heating Systems
Page 12
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”
of hot water from the heater when the filter pump
stops running.
See Figure 6 for proper connection of the
Pennant heater to the pool loop.
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
Figure 5. Mixing System.
Mixing Controller
Sensor (120°F)
Pool Loop / Inlet
(2 used)
Figure 6. Pool Heater Piping.
The Pennant Pool Heater is shipped with a field-installed mixing system, and must be piped in primary-
secondary style, as shown. A remote pool temperature sensor and remote pool temperature high limit
are wired to the Pennant, to be mounted in the pool water loop, as shown.
Summary of Contents for PNCP
Page 30: ...LAARS Heating Systems Page 30 Figure 10 Sheet Metal Components...
Page 31: ...Pennant Pool Heater Page 31 Figure 11 Internal Components...
Page 34: ...LAARS Heating Systems Page 34 Figure 14 Pennant 1250 2000 Ladder Diagram...
Page 35: ...Pennant Pool Heater Page 35 Figure 15 Pennant 500 1000 Wiring Schematic...
Page 36: ...LAARS Heating Systems Page 36 Figure 16 Pennant 1250 1500 Wiring Schematic...
Page 37: ...Pennant Pool Heater Page 37 Figure 17 Pennant 1750 2000 Wiring Schematic...
Page 38: ...LAARS Heating Systems Page 38 Figure 18 Field Wiring...
Page 39: ...Pennant Pool Heater Page 39...
