Duct Connection - Sinclair SWH-15/190TL Service Manual

Duct connection

A: Air inlet and outlet without duct
C: Air inlet and outlet with duct. (A+B 5m)
B: Only air outlet with canvas, A 5m
It is recommended to install unit by this way in the winter
where there is other heat source in the room.
D: Only air inlet with canvas A 5m
It is recommended to install unit by this way in summer
that could charge fresh air into room
Sanitary Water Heater Technical Manual