Truma clamp ZRS Ø 80 mm for fixing the ZR 80 combustion air intake duct of Combi heaters
- Truma clamp ZRS Ø 80 mm (39590-00) for fixing the ZR 80 combustion air intake duct to the wall or floor. For Truma Combi installations; ducts over 60 cm need at least one clamp.
Truma clamp ZRS Ø 80 mm (no. 39590-00) fixes a duct with a diameter of 80 mm to the wall or floor of the vehicle. In a Truma Combi installation it holds the ZR 80 combustion air intake duct of the wall cowl - according to the Truma instructions, ducts longer than 60 cm need at least one ZRS clamp. Truma shows the ZRS clamp in the Combi (E) and Combi D (E) installation drawing next to the ZR 80 cowl parts. You will find the matching cowl parts in the related products.

What it does
- fixes an Ø 80 mm duct to the wall or floor of the vehicle
- in a Combi installation - the ZR 80 combustion air intake duct between heater and wall cowl
- stops the duct from moving or sagging while driving
- the clamp is screwed to the surface
How many clamps
- for a ZR 80 duct longer than 60 cm - at least one ZRS clamp
- on longer runs use several clamps so that the duct is neither crushed nor kinked
- the clamp is sold individually
Installing the wall cowl according to Truma instructions
- the cowl is installed with the arrow pointing up, on an even wall surface around which wind can flow from all sides
- drill a Ø 83 mm hole in the wall; line any cavities around the hole with wood
- the cowl is sealed with a rubber seal; on textured surfaces also use flexible body sealant - not silicone
- the inner part is fixed with 6 screws, the outer part is fitted onto it and fixed with 2 screws B 3.5 x 25
- the AA 3 exhaust duct (Ø 55 mm) must be 10% longer than the ZR 80 combustion air intake duct (Ø 80 mm)
- a ZR 80 duct of 60-100 cm may rise or fall by max. 20 cm, a duct of 100-200 cm may only rise
- ducts longer than 60 cm are fixed to the wall with at least one ZRS clamp
- keep at least 10 mm between the exhaust system and heat-sensitive parts
For the Combi exhaust system Truma only permits original parts: AA 3 exhaust duct (39320-00), ZR 80 combustion air intake duct (39580-00) and clamps - the appliance is tested and approved only with these. Installation and inspection of the gas system should be carried out by an authorised specialist.
Related products
- Cowl outer part ZR 80, cream white (36151-01)
- Cowl outer part ZR 80, bianco (36151-05)
- Cowl outer part ZR 80, light grey (36151-08)
- Cowl outer part ZR 80, black (36151-09)
- Cowl outer part ZR 80, anthracite (36151-10)
- Wall cowl set ZR 80 (36240-01) - inner part, ducts and clamps
- Cowl inner part ZR 80 (36140-01) with clamps
Technical data
| Parameter | Value |
|---|---|
| Brand | Truma |
| Model | Clamp ZRS |
| Manufacturer number | 39590-00 |
| Duct diameter | Ø 80 mm |
| Use | fixing the ZR 80 combustion air intake duct to wall or floor |
| Heaters | Truma Combi (E), Combi D (E) |
| Contents | 1 clamp |
Questions and answers
Does the clamp fit the ZR 80 duct?
Yes. The ZRS clamp has a diameter of 80 mm and Truma specifies it for fixing the ZR 80 intake duct of the Combi wall cowl.
How many clamps do I need?
According to the Truma instructions a ZR 80 duct longer than 60 cm is fixed to the wall with at least one ZRS clamp.
Is a screw included?
The pack contains 1 clamp. Choose a screw suitable for the surface you fix the duct to.
Is this a clamp for the exhaust duct?
No. The AA 3 exhaust duct is secured on its connections with the clamps supplied with the cowl and heater. The ZRS clamp holds the whole ZR 80 duct against the wall or floor.
Manufacturer
Truma Gerätetechnik GmbH & Co. KG, Wernher-von-Braun-Straße 12, 85640 Putzbrunn, Germany.





