Commissioning; Checking Piping Installation And Heating System; Checking Electrical Installation; Filling Hot The Water Tank And Heating System And Bleeding Excessive Air - Danfoss DHP-AT Installation Manual

Installation Guide
9

Commissioning

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Before filling water in the heating system or turning on the power, the installation must be checked for safety and functional capability.
9.1

Checking piping installation and heating system

Pipe connections in accordance with the system solution.
▪ Flexible hoses on the supply and return lines
▪ Pipe insulation
▪ Strainer on return line
▪ All excessive air has been bled from the heating system
▪ All radiator valves fully open
▪ Expansion tank heating system (not included in the delivery)
▪ Safety valve for expansion tank
▪ Filler valve with non-return valve heating system (not included in the delivery)
▪ Safety valve for cold water (not included in the delivery)
▪ If the solution supports both heating and domestic hot water, also check:
▪ 3-way switching valve
▪ Bleed valve (not included in the delivery)
9.2

Checking electrical installation

▪ Circuit-breaker (not included in the delivery)
▪ Fuse protection
▪ Communication cable between heat pump and operator panel
9.3

Filling hot the water tank and heating system and bleeding excessive air

1. Fill the water heater/hot water tank with cold water by opening the filler valve that is on the valve pipe.
2. Bleed all excessive air by opening one of the hot water taps.
3. Fill the water heater coil and the heating system with water through the filling valve to a pressure of approximately 1 bar.
4. Open all radiator valves fully.
5. Bleed all excessive air from the radiators.
6. Refill the heating system to a pressure of approximately 1 bar.
7. Repeat the procedure until all air has been bled.
8. Check the system for leakage.
9. Leave the radiator valves fully open.
9.4

Starting the unit

1. Set the main power switch to ON.
2. Press
on the keypad.
The display shows the current status of the heat system.
After the power has been turned on to the heat pump, the system starts in house heating/DHW AUTO mode with a desired room tem-
perature as set in MENU 02. The default values can be modified as required, this is done by navigating through the menu system.
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DHP-AT
Read the safety instructions!
There is no reset function. If the default factory settings (parameter values) are changed, the only way to re-
turn to the default settings is to manually set the values presented in section Default settings.
VMGFI302 Danfoss Heating Solutions