Lochinvar F0600187510 service manual CFK3302, CFK3303, CFK3304, Combustion Air Filter

Installation and Service Manual

TABLE - A

COMBUSTIBLE FLOOR KITS

Input Btu/hr	Kit Number
500,000	CFK3302
650,000	CFK3303
750,000	CFK3304

FREEZE PROTECTION

Although this pool heater is CSA design certified for outdoor installations - such installations are not recommended in areas where the pool heater will be operated in the winter months and the danger of freezing exists. Proper freeze protection must be provided for outdoor installations; pool heaters installed in unheated equipment rooms or where temperatures may drop to the freezing point or lower. If freeze protection is not provided for the system, a low ambient temperature alarm is recommended for the equipment room. Damage to the pool heater by freezing is non- warrantable.

1.Pump Operation - MOST IMPORTANT - This pool heater is designed for continuous operation of the filter system pump when the burners are firing. If the system pump does not run continuously, an additional pump must be installed to provide constant circulation through the pool heater. The constant flow of warm pool water can help prevent freezing.

2.Anytime the temperature measured at the sensor drops below 45°F, the temperature control turns on the pump to circulate the water, if the pump option is installed.

3.Location - Indoor pool heaters must be located in a room having a temperature safely above freezing [32°F(0°C)].

4.Outdoor Pool Heater Installation - Use extreme caution to prevent freezing. A snow screen should be installed to prevent snow and ice accumulation around the pool heater or its venting system.

5.Shut-Down and Draining - If for any reason, the pool heater is to be shut off, the following precautionary measures must be taken:

a.Shut off gas supply;

b.Shut off water supply;

c.Shut off electrical supply;

d.Drain the pool heater completely. Remove the threaded drain plugs from the inlet and outlet sides of the front header on the heat exchanger (see Figure 3). Blow all water out of the heat exchanger. Leave drains open until Spring;

e.Drain pump and piping.

Figure 3 – Draining Pool Heater

￿CAUTION: Under no circumstances should the equipment room ever be under a negative pressure. Particular care should be taken where exhaust fans, attic fans, clothes dryers, compressors, air handling units, etc., may take away air from the pool heater.

COMBUSTION AND VENTILATION AIR

Provisions for combustion and ventilation air must be in accordance with Section 5.3, Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CAN/CGA-B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

Provide properly-sized openings to the equipment room to assure adequate combustion air and proper ventilation when the pool heater is installed with conventional venting or sidewall venting.

Combustion Air Filter

This pool heater has a standard air filter located at the combustion air inlet. This filter helps ensure clean air is used for the combustion process. Check this filter every month and replace when it becomes dirty. The filter size on the 500,000 - 750,000 units is 12" x 12" x 1" (30.5cm x 30.5cm x 2.5cm) and 16" x 16" x 1 (40.6cm x 40.6cm x 2.5 cm) on the 990,000 - 2,070,000 units. You can find these commercially available filters at any home center or HVAC supply store.

Use filters rated for a maximum face velocity of 300 ft/min at a maximum pressure drop of 0.5" water column (w.c.) Pleated filters may be used provided they meet these specifications.

￿CAUTION: Some pleated filters are too restrictive and could cause air flow problems.

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