3040531_0711
5
Motors
LH-three-phase motors (except explosion proof motors) may either operate on low spped
Y or on high speed ∆. The motor windings are designed accordingly.
Motors for single-phase alternating current may only oberate on high or low speed
depending on delivery.
LH-single-phase and three-phase motors (except explosion proof motors) are protected
with thermal cutours, which interrupt the control circuit of switch or step switch in case
of overheating of the fan motor.
When temperature decreases, the motor switches on automatically.
The winding protection wirks only in case of switching the therminal cutouts to the control
circuit of a switch of step switch.
Using switches or speed controllers not delivered by Wolf, we can´t take any
warranty!
Attention :
Heat exchanger
When connecting the heat exchanger counterhold with pipe-wrench.
The flow of the heating system has to be connected on the air discharge side of the
heat exchanger.
For steam:
Steam connection on top
Condensate return on bottom of discharge side
Connections on left hand side only, in direction of air flow
Evacuation of air and fluid has to be provided on site!
Operation limits for LPHW/MPHW:
Heat exchanger Co./Al., type 1, 2, 3, 4, NP 16, up to 140°C (threaded sleeves)
Heat exchanger steel-galvanized, NP 10, up to 140°C (threaded sleeves)
Heat exchanger steel-galvanized, NP 10, up to 180°C (welded flanges)
Operation limits for steam:
Heat exchanger Co./Al., type D, up to 9 bar saturated steam
Heat exchanger Co./Al., upt to 9 bar saturated steam
Attention :
In ceiling-mounted units there may occur damages by overheating when motor is swiched
off. For this reason the water inlet temperature has to be limited on:
Motor for higher surrounding temp. (on
request)
115°C when additional sections are
mounted (1)
140°C when additional sections are
mounted (2)
140°C without additional selections (2)
180°C without additional sections (2)
When fan stops all control valves have to be closed automatically.
Attention :
Ceiling-mounted unit
(1)
(2)
Installation and Operation Instructions
Electric heater
To avoid overheating, pay atenteion to the following minimum air volumes:
LH
25
40
63
100
Luftrichtung horizontal
V
min [m³/h]
800
1600
2500
4000
Luftrichtung vertikal
V
min [m³/h]
1000
2200
3200
5000
Protective measures: In any case it has to be secured that the electric heater is swit-
ched off when the air volume is falling below the indicated minimum. Additionally, the
electric heater may only be set into oberation by one or several magnetic swiches
whose control circuit leads over the automatic overheating controllers wired in line. Pay
attention to the fact that at least one automatic controller has to be mounted on top of
the electric heater.
In any case, protect against water
Attention :
