MCA
Pro
45/65/90/115
MCA-Pro ISM Rv.4.1 2/2017
40
Exhaust Vent Material-Canada
Use CPVC or Polypropylene (PP) vent component systems approved under ULC-S636 Standard for Type BH Gas
Venting Systems, or stainless steel Type BH venting systems*. Permitted PP materials comprise single wall rigid pipe
and fittings and flexible. Ensure compliance with exhaust temperature limitations for the respective materials, which
typically are:
- ULC-S636 CPVC: 194°F / 90°C
- ULC-S636 PP: 230°F / 110°C
In the standard configuration, MCA Pro series boilers can supply water temperatures up to 170°F.
Exhaust Vent Materials-USA
De Dietrich requires that only certified CPVC, PP and PVC vent component systems approved under ULC-S636 and/
or UL17838 Standard for type BH Gas Venting System, or stainless steel type BH venting systems* are to be used
Many local jurisdictions in the USA allow the use of PVC (Sch.40 ASTM D 1785 or D2665 and fittings). If PVC vent
pipe is to be used, it must be ULC-S636 and/or 1738 certified material.
Standard configration for the MCA Pro boiler with PVC venting will allow a maximum of 170°F.
Do not use ABS or any cellular core pipe for exhaust venting.
The boiler offers venting connections (3" for MCA Pro 30/45, and 4" for MCA Pro 65/90/115). Fittings are to be used
to adapt to the appropriate diameter-see Vent Travel below. Exhaust venting is to be inserted directly into the 4”.
For PP material, use either a 3" transition/adapter (MCA 35/45) or a 4” transition/adaptor fitting (Sch 40 to PP)
(MCA Pro 65/90/115) offered by the PP manufacturer M&G Dura Vent/PolyProTM (#4PP-AD). For PP material
exposed to outdoor weather, follow the venting supplier’s recommendations on UV protection.
Venting shall be supported in accordance with national and local codes having jurisdiction.
* Manfacturers of stainless steel Type BH venting systems must submit their approved transition fitting to DDR
Americas Inc. for evaluation and written approval.
4. Installation
DANGER
Only ULC-S636 and/or UL1738 certified venting materials are allowed for MCA Pro boiler
This boiler is factory set for the use of UL1738 or ULC-S636 approved CPVC and PVC venting material. To protect
the venting system for too high flue temperatures this boiler is equipped with a flue temperature sensor. This
sensor will limit the boiler to the maximum allowed flue temperature of 65°C. If the boiler will be installed with
other (higher qualified) venting material the flue temperature limit parameter should be changed to the maximum
allowed flue temperature of the venting material, see table:
Material Max. allowed flue temp. Flue temp. Limit parameter
PVC 65°C / 149°F 65°C / 149°F
CPVC 90°C / 194°F 90°C / 230°F
PP 120°C / 248°F 110°C / 230°F
SS 315°C / 600°F 110°C / 230°F
Содержание MCA Pro 115
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