Round seamless copper tubes are mechanically expanded into the fin collars of the secondary surface. The mechanical expansion provides a permanent metal-to-metal bond for efficient heat transfer. Tubes are staggered in the direction of airflow and only RETURN BENDS are used – NO reduced tube wall in the bend radius by hairpin bends.
Tube Size Options:
5/8” o.d. options ( tube wall thickness / return bend thickness ) ( .025” / .035” ) ( .035” / .049” ) ( .049” / .049” ). Tubes are centered on 1.50” in the tube face and 1.299” between rows.
Rows available are 1 or 2.
Corrugated plate type fin that is die-formed. Fin collars are full-drawn to provide accurate control of fin spacing and maximum contact with tubes.
Fin Material Options:
Aluminum fin .008” thick with optional (.010). Optional copper fin thicknesses are (.006) (.008) (.010). Fins per inch available are 6 through 14.
Seamless copper with die-formed holes that provide a parallel surface to the coil tube for strong brazing joints.
Red brass Schedule 40 male pipe thread (MPT) is standard with optional copper female pipe thread (FPT) available. Maximum fin length of 108” with same end connections. Steam pressure above 50 PSIG will have opposite end connections. Any fin height over 48” will have two supplies and two returns.
Using 16 ga. minimum thickness material, 1 ½” flanges are die-formed to permit easy stacking and mounting. Intermediate tube supports are supplied on coils over 44” fin length with an additional support every 42”.
Casing Material Options:
Full G-90 galvanized steel standard with optional 304 & 316 stainless steel.
Testing & Performance
All coil assemblies are leak tested under water at 315 PSIG nitrogen. Standard construction is suitable for 25 PSIG steam pressure. Heavier wall construction is available up to 100 PSIG.
PERFORMANCE is CERTIFIED under ARI Standard 410. All coil performance ratings are according to Temtrol’s ARI certified selection software.