Custom-made environment friendly heating with standard Mark-equipment In addition to the High Efficiency air heater, the Mark-range also includes a gas-fired, high performance air heater with a centrifugal fan. The GC+ is particularly suited for connection to duct systems, or systems where high pressure is required. This condensing equipment provides efficiency greater than 106% (lower value). Heat is generated via a modulating (5:1) premix burner which results in very low gas consumption. The GC+ is operated using an Optitherm+ clock thermostat or an Interface+ module that allows a connection with the BMS (building management system) via Modbus or a 0-10V contact. The Optitherm+ also makes it possible to control the GC+ units remotely with an app for mobile phone and tablet (available soon). Other operating options are also available. An extensive range of additional sections has been developed for the GC+. This ensures the standard GC+ can be simply and affordably adapted to any project specification. The comprehensive capacity range (15-150 kW) also means the area of application for this type of equipment is virtually limitless. The GC+ can additionally be incorporated into an air handling unit. The GC+ is designed to heat garages, warehouses, workshops, schools and sports halls among other applications, with or without a duct system. Features of the Mark GC+ - Centrifugal fan with forward curved blades - 3-phase electric motor 1400 min-1 - V-belt transmission - Shock absorbers - Low noise level - Variable air volume - Variable delta T - System air pressure up to 300 Pa - Fan outlet position: front side - Low maintenance - Modulation range 5:1 Options - Centrifugal fan with backward curved blades - Insulated fan casing - Outdoor version available

B = Gas connection C = Combustion air inlet D = Flue gas exhaust E = Electrical connection F = Centrifugal fan G = Condensation connection o40 mm

Technical information External pressure = 0-300 Pa, more on request G25 = Natural gas, G20 = Natural gas, G3I = Propane, G30 = Butane Accessories flue gas exhaust Type Nominal load (upper value) kW Minimal load (upper value) kW Flue efficiency at maximum load % (lower value) Flue efficiency at % minimum load (lower value) Burner turndown ratio +/- 1 Extension set 2 90° elbow 3 45° elbow 4 Single flue set horizontal 5 Single flue set vertical 6 Roof flashing for pitched roof 7 Adhesive plate 8 Flexible roof flashing for cladded roof

Assembly/location suggestions Accessories - additional Weather grill > 100-40% fresh air intake Transition piece Damper Mixing box, 3 sides Mixing box, air intake bottom Mixing box, air intake top Empty section Filter casing G4 or F5/F7 Fan casing Horizontal louvres Vertical louvres

Controls Installation with: - Optitherm+ - Room temperature control Installation with: - Interface+ - Capacity control with external 0-10V signal or Modbus. Isolator switch Isolator switch (optional)* Room sensor 0629194 Optitherm+ (Clock thermostat) 0629189 Wifi bridge** (optional) 0629186 Installation with: - Optitherm+ in combination with Interface+ - Room temperature control in combination with Modbus. Allows you to read the status and change the settings of the Optitherm+. Isolator switch (optional)* Room sensor 0629194 Optitherm+ Interface+ (Clock thermostat) (link BMS Modbus) 0629189 0629188...

Installation with: - Optitherm+ - Room temperature control Isolator switch Isolator switch (optional)* Room sensor 0629194 Isolator switch (optional)* Room sensor 0629194 (optional)* Room sensor 0629194 Optitherm+ (Clock thermostat) 0629189 Wifi bridge** (optional) 0629186 Installation with: - Optitherm+ in combination with Interface+ - Room temperature control in combination with Modbus. Allows you to read the status and change the settings of the Optitherm+. Isolator switch (optional)* Room sensor 0629194 Isolator switch Isolator switch (optional)* Room sensor 0629194 (optional)* Room sensor...