Westinghouse WBRCNG140F Installation Manual download pdf (Page 51)

WHL-015 REV. 12.17.14

PART 11 – START-UP PREPARATION

Thoroughly clean and flush any system that has used glycol before installing the appliance.

A. CHECK / CONTROL WATER CHEMISTRY

Chemical imbalance of your water can cause severe damage to your appliance and associated equipment, and may also affect

efficiency. You may have to have your water quality professionally analyzed to determine whether you need to install a water softener.

It is important that the water chemistry on both the domestic hot water and central heating sides are checked before installing the

appliance, as water quality will affect the reliability of the system. Outlined below are those water quality parameters which need to be

met in order for the system to operate efficiently for many years. Failure of a heat exchanger due to lime scale build-up on the

heating surface, low pH or other imbalance IS NOT covered by the warranty.

To assure good extended service life, it is recommended that you test your water quality prior to installation. Listed below are some

guidelines.

Do not use petroleum-based cleaning or sealing compounds in the appliance system. Damage to elastomer seals and gaskets in the

system could occur, resulting in substantial property damage.

Water Quality

Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant

levels (40 CFR Part 143.3) as shown in Table 23. It is important to ensure the water quality is within these determined limits. If your

water contains contaminants higher than outlined by EPA, then water treatment is recommended and additional maintenance may be

required. If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized

technician or licensed professional.

Contaminant

Maximum Allowable Level

Contaminant

Maximum Allowable Level

Total Hardness

200 mg/l (12 grains/gallon)

Manganese

0.05 mg/l

Aluminum

0.05 to 0.2 mg/l

6.5-8.5

Chloride

250 mg/l

Sulfate

205 mg/l

Copper

1 mg/l

Total Dissolved Solids (TDS)

500 mg/l

Iron

0.3 mg/l

Zinc

205 mg/l

Table 23 – Water Quality Specifications

Clean system to remove sediment*

1. You must thoroughly flush the system (without the appliance connected) to remove sediment. The high-efficiency heat exchanger

can be damaged by buildup or corrosion due to sediment.

2. For zoned systems, flush each zone separately through a purge valve. (If purge valves and isolation valves are not already installed,

install them to properly clean the system.)

3. Flush system until water runs clean and you are sure piping is free of sediment.

*NOTE: It is recommended you clean heat exchanger at least once a year to prevent lime scale buildup. Follow the maintenance

procedure to clean the heat exchanger in this manual.

NOTE: APPLIANCE FAILURE DUE TO IMPROPER WATER CHEMISTRY IS NOT COVERED BY WARRANTY.

B. CHECK FOR GAS LEAKS

Before starting the appliance, and during initial operation, smell near the floor and around the appliance for gas odorant or any unusual

odor. Remove appliance front door and smell interior of appliance enclosure. Do not proceed with startup if there is any indication of a

gas leak. Repair any leaks at once.

PROPANE APPLIANCES ONLY – Propane suppliers mix an odorant with the gas to make its presence detectable. In some instances,

the odorant can fade, and the gas may no longer have an odor. Before startup and periodically thereafter, have the propane supplier

verify the correct odorant level in the gas.

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Westinghouse WBRCNG140F Installation Manual Page 51

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