Cointra CPA - Checks During Operation; Maintenance Procedures; Periodic Checks; Opening the Casing

27
EN
CPA
Rev. 00 - 11/2018
connections facing down.
IF THE ABOVE INSTRUCTIONS ARE NOT OBSERVED THE-
RE MAY BE RISK OF SUFFOCATION OR POISONING DUE
TO GAS OR FUMES ESCAPING; DANGER OF FIRE OR EX-
PLOSION. ALSO, THERE MAY BE RISK OF FLOODING THE
ROOM
3.2.2 Checks during operation
• Light the unit.
• Make sure the fuel and water systems are tight.
• Check the efficiency of the air and flue gas ducts while the heater is operating.
• Make sure the gas valve modulates correctly.
• Verify that the heater ignites easily. Turn it on and off several times to make sure.
• Check that the fuel consumption is as indicated.
3.3 MAINTENANCE
3.3.1 Periodic checks
In order for the unit to operate correctly, an authorized technician must perform an annual
inspection, checking that:
• The control and safety devices (gas valve, etc.) operate correctly.
• The exhaust vent is perfectly efficient.
• The air and flue gas ducts and terminal are free of obstacles and leaks.
• The burner and exchanger are free of dirt and deposits. Do not use chemicals or steel
brushes to clean them.
• The electrode is free of deposits and properly positioned.
• The gas and water systems are perfectly tight.
• The gas delivery and operating pressure values are as indicated on the tables.
A soft, damp cloth may be used to clean the casing and exterior parts of the heater, using
soapy water if necessary. Do not use abrasive detergents or solvents.
3.3.2 Opening the casing
To open the casing:
1. Unscrew the A screws.
2. Rotate the casing.
3. Lift the casing.
Before performing any operations inside the heater, close the gas
cock.
fig. 14 - Opening the casing
3.4 REPLACING THE BATTERIES
To change the batteries, proceed as described in fig. 15.
fig. 15 - Opening the battery box
4 TECHNICAL DATA AND CHARACTERISTICS
4.1 Dimensions and connections
Model A (mm) B (mm) C (mm) D (mm) E (mm) a4 (mm)
11 330 170 550 585 570 110
14 400 220 650 685 670 130
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fig. 16 - Dimensions and connections
1 1/2” gas inlet
2 1/2” cold water inlet
3 1/2” domestic hot water outlet