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LAARS Heating Systems

Page 8

2.2.2 Category I Vent

When vented as a category I appliance, the vent

system must conform to the National Fuel Gas Code
(American National Standard Z223.1-Latest Edition)
in the U.S., or in Canada, to CSA B149.1 (latest
edition). The vent system must be sized and installed
for a Category I Fan-Assisted Appliance.

If chimney height is greater than 25 feet, or if

multiple units are vented into the same vertical vent, a
barometric damper must be installed on each
appliance, such that the flue draft does not exceed
(negative) 0.1" w.c.

If using a power venter for any type of Category

I venting, the draft should be set between (negative)
0.01 and 0.10" w.c.

2.2.3 Common Venting Systems

Pennant units are Category I fan-assisted when

vented vertically and adhering to all applicable codes.
Pennant units are not allowed to be vented into a
common horizontal vent system, unless a properly-
sized vent fan is used, and the common vent system is
properly designed by the vent fan manufacturer or a
qualified engineer.When common venting Pennant
fan-assisted heaters with other appliances through one
shared vertical duct called a “common vent”, special
care must be taken by the installer to ensure safe
operation. In the event that the common vent is
blocked, it is possible, especially for fan-assisted
devices, to vent backwards through non-operating
appliances sharing the vent, allowing combustion
products to infiltrate occupied spaces. 

If the

appliances are allowed to operate in this condition,
serious injury or death may occur.

WARNING

Operation of appliances with a blocked common
vent may lead to serious injury or death. Safety
devices must be implemented to prevent blocked
common vent operation. If safe operation of all
appliances connected to a common vent cannot be
assured, including prevention of spillage of flue
gasses into living spaces, common venting should
not be applied, and appliances should each be
vented separately.

It is for this reason that, in addition to following

proper vent sizing, construction and safety
requirements from the National Fuel Gas Code, ANSI
Z223.1 or in Canada, from CSA B149.1 as well as all
applicable local codes, it is required that installers
provide some means to prevent operation with a
blocked common vent. It is suggested that a blocked
vent safety system be employed such that if the switch
from one appliance trips due to excessive stack spill or
backpressure indicating a blocked vent condition, that
all appliances attached to the vent be locked out and
prevented from operating. (Note that the Pennant Pool

Heater is equipped with a blocked vent safety
(pressure) switch, as shipped.)  As an additional
precaution, it is recommended that a Carbon
Monoxide (CO) alarm be installed in all enclosed
spaces containing combustion appliances. If assistance
is required in determining how a blocked vent safety
system should be connected to a LAARS product,
please call Applications Engineering at (603) 335-
6300.

Refer to the installation and operating

instructions on all appliances to be common vented for
instructions, warnings, restrictions and safety
requirements. If safe operation of all appliances
connected to a common vent cannot be assured,
including prevention of spillage of flue gasses into
living spaces, common venting should not be applied,
and appliances should each be vented separately.

2.2.4 Category III Vent

When the Pennant is vented with horizontal

discharge, it must be installed per this installation
manual and the venting system manufacturer’s
installation instructions. The vent system must be
sealed stainless steel, per Table 5.

Route the vent pipe to the heater as directly as

possible. Seal all joints and provide adequate hangers
as required in the venting system manufacturer’s
Installation Instructions. Horizontal portions of the
venting system must be supported to prevent sagging
and may not have any low sections that could trap
condensate. The unit must not support the weight of
the vent pipe. Horizontal runs must slope downwards
not less than ¼ inch per foot (2 cm/m) from the unit to
the vent terminal. Reference Table 2 for the size of the
Category III vent system. Up to three elbows can be
used with 50 linear feet (15.2m) of pipe. Subtract 10
allowable linear feet (3.0m) for every additional elbow
used.

TERM

DESCRIPTION

Pipe

Must comply with UL Standard 1738

such as Type 29-4C Stainless Steel

(either insulated or non-insulated).

Joint

Follow vent manufacturer’s instructions

 Sealing

Table 5. Required Horizontal Venting Material.

2.3 Locating Vent & Combustion Air

Terminals

2.3.1 Side Wall Vent Terminal

The Laars side wall vent hood (listed in Table 1)

must be used when the heater is vented through a side
wall. It provides a means of installing vent piping
through the building wall, and must be located in
accordance with ANSI Z223.1/NFPA 54 and
applicable local codes. In Canada the installation must
be in accordance with CAN/CGA B149.1 or .2 and

Содержание Pennant PNCP 500

Страница 1: ...ualified in hot water boiler installation and maintenance Improper installation and or operation could create carbon monoxide gas in flue gases which could cause serious injury property damage or deat...

Страница 2: ...trol Parameters 14 5 3 3 Setpoint LSP 14 5 3 4 Differential dLS 14 5 3 5 Pump Operation 14 5 3 6 Heater Purge Pump Delay PD 14 5 4 Limit Controls 14 SECTION 6 Operating Instructions 6 1 Sequence of Op...

Страница 3: ...oper installation The Pennant appliance is protected against over pressurization A pressure relief valve is fitted to all appliances It is installed on the outlet header at the water outlet of the app...

Страница 4: ...of the structure When such a location is not available it is recommended that a suitable drain pan adequately drained be installed under the appliance The appliance is design certified by CSA Interna...

Страница 5: ...86 101 8 26 30 78 29 75 8 22 8 22 80 203 8 20 12 30 8 20 1500 78 199 39 101 101 8 26 30 78 29 75 8 22 8 22 91 231 8 20 12 30 8 20 1750 89 226 44 113 101 8 26 30 78 29 75 8 22 8 22 101 256 8 20 14 36...

Страница 6: ...se Never obtain combustion air from the pool area Corrosion of and or damage to the pool heater may result 2 1 1 Combustion Air From Room In the United States the most common requirements specify that...

Страница 7: ...e pipe Maximum linear pipe length allowed is 50 feet 15 2m Three elbows have been calculated into the 50 foot 15 2m linear run Subtract 10 allowable linear feet 3 0m for every additional elbow used se...

Страница 8: ...ppliance trips due to excessive stack spill or backpressure indicating a blocked vent condition that all appliances attached to the vent be locked out and prevented from operating Note that the Pennan...

Страница 9: ...metering regulating or relief equipment 7 If the Pennant uses ducted combustion air from an intake terminal located on the same wall locate the vent terminal at least 3 feet 0 9m horizontally from th...

Страница 10: ...e ell facing down to prevent rain infiltration The combustion air inlet opening must still be high enough to prevent blockage by snow see Section 2 3 2 SECTION 3 Gas Supply and Piping 3 1 Gas Supply a...

Страница 11: ...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 rec...

Страница 12: ...pool loop 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...

Страница 13: ...e to the next parameter Figure 7 Pool Heater Controller wiring terminal strip which is located at the right side of the appliance NOTE All internal electrical components have been prewired No attempt...

Страница 14: ...LS is the number of degrees between the temperature at which the heater turns off and the temperature at which the heater restarts It is adjustable from 1 F to 10 F 5 3 5 Pump Operation The pump energ...

Страница 15: ...nant 1250 1500 1750 and 2000 models have two ignition modules that control different burners 6 2 Filling the Heater System 1 Ensure the system is fully connected filled with water and all valves are o...

Страница 16: ...act your heating contractor gas company or factory representative 6 4 Shutting Down the Pennant 1 Switch off the shutdown switch located above the Main Power Switch 2 Wait until the pump light located...

Страница 17: ...y drained before the first frost Drain the heater by removing the plug at the end of the inlet outlet header casting Also remove the small plug at the bottom of the pump housing Do not replace either...

Страница 18: ...the burners in the reverse order 7 2 2 Filter The filter used in the Pennant is washable with an 83 arrestance Since the filter is washable it will 3 Spas are excellent for relaxation body conditioni...

Страница 19: ...nit has water flow before ignition is allowed only need replacement in very rare cases If filter replacement is needed it should only be replaced with a factory part Inspect the air filter If there is...

Страница 20: ...ol 7 2 13 Heat Exchanger Coil Caution Black carbon soot buildup on a dirty heat exchanger can be ignited by a random spark or flame To prevent this from happening dampen the soot deposits with a wet b...

Страница 21: ...is within the proper range No significant flue gas odor should be detected when combustion is proper A strong piercing smell indicates poor combustion and generally a lean mixture low CO2 or high O2 T...

Страница 22: ...e inducer terminals F1 and F2 of the Fenwal ignition module The 24V power to the T STAT terminal of the ignition module s are routed through the safety interlocks The ladder diagram for models 1250 15...

Страница 23: ...eft Side Front 5C2015 5C2015 5C2015 5C2015 5C2015 5C2015 5C2015 18B Chamber Right Side Front 5C2016 5C2016 5C2016 5C2016 5C2016 5C2016 5C2016 Item Description Model Model Model Model Model Model Model...

Страница 24: ...00 T2017900 T2017100 T2017900 T2017100 1 1 1 1 1 1 35B Tile Front Center T2016900 T2016900 T2016900 T2016900 1 1 2 2 36 Tile Rear T2015700 1 37 Tile Rear Left Side T2017500 T2016600 T2016600 T2016600...

Страница 25: ...utlet Bronze 20150301 20150301 20150301 20150301 20150301 20150301 20150303 51 Flow Switch RE0013000 RE0013000 RE0013000 RE0013000 RE0013000 RE0013000 RE0013000 52 Gauge Temperature Pressure RA0079000...

Страница 26: ...imit Auto Reset 135 F E2104800 E2104800 E2104800 E2104800 E2104800 E2104800 E2104800 72 Relay Pump SPST E0098300 E0098300 E0098300 E0098300 E0098300 E0098300 E0098300 72A Relay Fan DPDT E0076600 E0076...

Страница 27: ...000 6 9 12 15 18 21 24 Orifice Gas Propane L2012400 L2012400 L2012400 L2012400 L2012400 L2012400 L2012400 6 9 12 15 18 21 24 81 Burner Manifold 3 Burners Right L2012900 L2012900 L2012900 L2012900 L201...

Страница 28: ...LAARS Heating Systems Page 28 Figure 9 Sheet Metal Components...

Страница 29: ...Pennant Pool Heater Page 29 Figure 10 Internal Components...

Страница 30: ...LAARS Heating Systems Page 30 Figure 11 Heat Exchanger Components A See pump chart below for pump numbers...

Страница 31: ...Pennant Pool Heater Page 31 Figure 12 Pennant 500 1000 Ladder Diagram SECTION 10 Wiring Diagrams...

Страница 32: ...LAARS Heating Systems Page 32 Figure 13 Pennant 1250 2000 Ladder Diagram...

Страница 33: ...Pennant Pool Heater Page 33 Figure 14 Pennant 500 1000 Wiring Schematic...

Страница 34: ...LAARS Heating Systems Page 34 Figure 15 Pennant 1250 2000 Wiring Schematic...

Страница 35: ...Pennant Pool Heater Page 35 Figure 16 Field Wiring PNCP 500 1000...

Страница 36: ...rvice Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 Applications Engineering 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars c...

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