Technibel PMHRV 2044 - System Options; Auxiliary Electric Heating

7
5 - OPTIONS
5.1 - AUXILLIARY ELECTRIC HEATING OPTION
5.1.1 - PRESENTATION
• The heater consists of immersion heaters each rated of 16 kW (400 V, 3-phase), secured to the hydraulic module's
buffer tank.
• Backup is authorized with the 2
nd
stage, although is triggered only if the generator is out of service.
• Securities:
- One of the immersion heaters is equipped with a 2-threshold safety thermostat: one automatic reset threshold which is
factory set at 70°C and a manual reset set at 87°C.
- All malfunctions detected by this thermostat results in the shut-down of the electric heating.
- After having turned off (and locked out) the power to the unit and corrected the malfunction, the safety device is reset by
pressing the button located on the body of the thermostat. This thermostat is accessible under the immersion heater’s
head cover.
- This heater is also slaved to the operation of the water circulating pump.
- These immersion heaters are controlled from a specific heating control box (see location in paragraph 4.2.3),
equipped with:
- either a 2-stage electronic controller in standard version (see paragraph 5.1.2),
- or a command module which is controlled directly by the control box (see paragraph 5.1.3).
5.1.2 - OPERATION WITH
STANDARD REGULATION
UNIT
A - PRESENTATION
• The following are located inside the
heating control box:
- the power switch to which the electric
heating power supply is connected,
-lthe power outgoing feeders,
protected by circuit breakers,
supplying electrical power to the
immersion heaters,
- the 2-stage electronic controller
handling the operation of the electric
heater and controlling the generator
(with its water circulation pump)
according to:
- the On/Off and Heating/Cooling
selection made on the remote
control,
- the system’s water temperature
(installation return) measured by
a probe.
30 31
UN
32 33
12
10 13
34
S1
56
11
R1 R2 GR
Chaud
Heat
Froid
Cool
Mode indicator
(by remote control)
Generator ON
indicator
Electric heater
2nd stage ON
indicator
Electric heater
1st stage ON
indicator
1st stage
command
Generator
command
Remote
control
Water temperature probe
(installation return)
2nd stage
command
Pump
command
Regulation
power supply
(230V)
On/Off
HEAT/
COOL
PMHRV 2044 to 2072
Back-up - 16 kW
2
nd
stage - 16 kW
1
st
stage - 16 kW
Water
outlet
Tank
Water inlet
Security
Code K 60 C 480 M : Standard
Heating power: 24 kW
Current : 35 A