McDonald STEELflow 250 Litre Indirect Unvented High Gain Cylinder (CCS250HP)

Features:

• High grade duplex stainless steel
• 25 Year guarantee
• Corrugated coil for maximum heat transfer
• Post weld treatment for maximum durability
• Low heat losses
• High density foam insulation
• Pressure loss on heat pump coils less than 0.4 bar

All 250 Litre Indirect Cylinders are supplied with:

• 22mm Altecnic Inlet Combination Control Set
• 24 Litre Zimlet Expansion Vessel with Fixing Kit
• 28mm EPH 2 Port Motorised Zone Valve
• Altecnic 1/2″ T&P Valve
• 15 x 22mm Tundish
• ESi High Limit Thermostat
• Installation Manual

All Units to Following Specification:

• 90 Degree Elbow on Hot Water Draw Off (22mm compression)
• Secondary Return (22mm compression)
• T&P Valve (1/2” Female)
• Thermostat Pocket (1/2″ & NTC Pocket)
• Low Level Immersion Heater (1 3/4” Female)
• Heat Pump Coil Flow / Return (1” BSP Female with 28mm Compression Adaptors)
• Cold Feed (22mm compression)

The STEELflow heat pump unvented cylinder is manufactured from duplex stainless steel, and specifically designed for use with either air source or ground source heat pumps. It has a high efficiency corrugated coil heat exchanger, to heat the full volume of water held within the cylinder. The coil’s corrugated design provides high heat transfer and flow rates from the heat pump, with faster recovery times than plain coils due to the increased surface area.