Uno - Installation Manual

TWIN PIPE SYSTEMS In

TWIN PIPE SYSTEMS In calculating the lengths of the pipes, the maximum length “L” must also take into consideration the values for the exhaust/air intake end terminals, as well as 90° elbows for coaxial systems. The C52 types must comply with the following requirements: 1 - The exhaust/ air intake pipes must have the same diameter of ø 80 mm. 2 - If elbows are to be inserted into the air intake and/or exhaust system, the calculation of the overall length must take into consideration the values for each elbow, see the FLUE PIPE ACCESSORIES MANUAL. 3 - The exhaust pipe must protrude by at least 0.5 m above the top of the roof in the event that it is located on the opposite side of the building to the air intake (this condition is not obligatory when the air intake and exhaust are located on the same side of the building). 4 - It is not possible to install the C52 type flues on opposite sides of the building FIG. 2.12 2.10 ROOM THERMOSTAT CONNECTION 1 To connect a room thermostat, it is necessary to: 1. - Remove the front panel as indicated in section 3.3. 2.- Rotate the control panel (see fig. 1). 3. - Rotate the two plastic screws (see fig. 2). 4. - Pull foward the P.C.B. (see fig. 3). 3. - Insert the thermostat cable through the cable grommet and fasten it by means of the cable-clamp provided. 4. - Then connect the thermostat wires to the terminal block. 5.- If a remote time clock is to be fitted, disconnect the integral time clock from the P.C.B. 6. - Using a volt-free switching time clock, connect the switching wires from the time clock following points 1-4 above. 7. - If using an external time clock and room thermostat, these must be connected in series as points 1-6 above. Note: Only a two-wire type room thermostat can be used. An anti-frost device is built-in to the appliances electronic regulation system. 2 3 12

2.11 ELECTRICAL DIAGRAM LEGEND: A = Central Heating Selection (Winter) and Temperature Adjustment B = Domestic Hot Water Temperature Adjustment C = On/Off/Reset Switch D = Ignition Failure (Lockout) L.E.D. E = Fume Sensor L.E.D. F = Ignition L.E.D. (Burner On) G = Time Clock Connector H = Circulation Pump Relay I = Motorised Diverter Valve Relay J = Fan Relay K = Gas Valve Relay L = Remote Control Connection M = Jumper (Self Test Pressure Adjustment - see table 3.0) N = Jumper Ignition Delay (Anti-cycling) Adjustment O = Jumper Low Temperaure installation (under floor) P = Jumper (Soft-light Adjustment/Maximum Heating Adjustment) Q = Transformer R = Room Thermostat Connector A01 = Fan A02 = Gas Valve Supply A03 = Motorised Diverter Valve A04 = Circulation Pump A05 = Spark Generator A06 = Main Circuit Temperature Probe (Flow Sensor) A07 = Main Circuit Temperature Probe (Return Sensor) A08 = Air Pressure Switch A09 = Domestic Hot Water Flow Switch A10 = Modulator A11 = Flame Detection Circuit Colours: Gry = Grey Wh = White Rd = Red Bl = Azzurro Vi = Violet Blk = Black 1 FUSE L N FUSE CN 301 H I J K 4 CN 100 CN 104 CN 101 CN 102 B A 3 2 P O N M 1 CN 200 1 3 G L R CN 204 CN 202 CN 205 A CN 100 CN 201 rosso D LC 100 1 giallo E Q verde F C M N O P 1 2 3 A B CN 102 CN 101 CN 104 4 CN 100 CN 301 1 Blk Gry 2 Gry 3 4 5 6 7 8 9 10 11 12 Blk Gry Gry Gry Gry Gry Gry Gry CN 201 1 2 Az Rd B 3 4 5 6 7 8 9 10 11 12 Blk Vi Vi Gry Blk Wh A11 FIG. 2.14 A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 13