Nordair Niche DH2 150 Installation, Commissioning & Service Manual Download Page 14

This sheet must be completed by the commissioning engineer after the heater has been started for the

first time.
TO BE RETAINED IN MANUAL

CUSTOMER
HEATER TYPE
SERIAL No
BMS CONTROLLER TYPE
HEATER ADDRESS
MOTOR
MOTOR PULLEY
FAN PULLEY
BELTS
BELT CENTRES

ALIGNMENT

TENSION
PROFILE OPENING
VELOCITY
BURNER SIZE 
CURRENT

L

1

L

2

L

3

OVERLOAD SIZE
GAS LINE SUCTION
LOW FIRE
HIGH FIRE (DIFF) 
GOVERNOR INLET PRESS
GOVERNOR OUTLET PRESS
PILOT PRESSURE

AIR PRESS DIF
AIR PRESS SWITCH SET @

OVERHEAT SET@

CHECKS
FULL SYSTEM CHECK

LOCKOUT FLAME FAILURE

LOCKOUT AIR FAILURE

GAS TRAIN SOUNDNESS

GAS VALVE POSITION

OVERHEAT STAT

GAS VALVE MODULATION

Engineer.......................................................................

Date....................................

Commissioning setting fresh air heaters

Summary of Contents for DH2 150

Page 1: ...DIRECT FIRED DV DH DIRECT GAS FIRED MAKE UP AIR UNITS Installation Commissioning Service Manual Ambi Tec Ambi Stat...

Page 2: ...d be required on the access side of the heater and a minimum 500mm clearance required on the non access side and top of the heater For heaters mounted in the roof steel work the units can be supported...

Page 3: ...Internal wiring The amount of interconnecting wiring will depend on the control system being used this will be indicated on the schematic wiring diagram with the minimum connections Ambitec controlle...

Page 4: ...Louvre 4 OFF 20mm electrical connection points H BSP gas inlet connection B B C Discharge opening C Discharge 50 50 50 500 50 50 50 500 DH2 75 1 2 BSP Weather proofed hood fitted to external units on...

Page 5: ...SP 1400 856 DH2 75 1 2 BSP Weather proofed hood fitted to external units only ACCESS SIDE VIEW VIEW ON DISCHARGE OUTLET VIEW ON FRESH AIR INLET A Electrical control panel B N Optional extra discharge...

Page 6: ...set point say 19 C adjustable the heater discharge air temperature is controlled at a constant 40 C by means of a active duct sensor modulating the gas throughput control valve At 1 C above room set...

Page 7: ...and main electrical supply Gas installation pipework has been tested for soundness Gas installation has been purged Note and record fan motor data badge details Note and record fan and motor pulley si...

Page 8: ...le and with a pair of grips on the valve spindle minutely close to the valve in small stages until the 5 C temperature rise is obtained With great care tighten the U clamp onto the valve spindle ensur...

Page 9: ...on pipework has been tested for soundness Gas installation has been purged Note and record fan motor data badge details Note and record fan and motor pulley sizes belt reference and pulley centres Fan...

Page 10: ...t increase the burner pressure at high fire then the gas control valve requires resetting Connect a separate manometer to pressure tapping point P5 and P9 measure the pressure The differential gas pre...

Page 11: ...out condition Remove the air sensing tube from the bottom connection of the air pressure switch The heater will lockout Replace and reset Adjust overheat controller set point down until heater shuts o...

Page 12: ...LATE DRIVE FREE PROFILE DAMPER SLIDE RAILS GREASE PROFILE DAMPER LIMIT SWITCH OPERATION PROFILE DAMPER DRIVE LINKAGE PROFILE DAMPER DRIVE MOTOR DRIVE BELT CONDITION BURNER GAS PORTS RE DRILL BURNER MI...

Page 13: ...PLATE DRIVE FREE PROFILE DAMPER SLIDE RAILS GREASE PROFILE DAMPER LIMIT SWITCH OPERATION PROFILE DAMPER DRIVE LINKAGE PROFILE DAMPER DRIVE MOTOR DRIVE BELT CONDITION BURNER GAS PORTS RE DRILL BURNER M...

Page 14: ...ELT CENTRES ALIGNMENT TENSION PROFILE OPENING VELOCITY BURNER SIZE CURRENT L1 L2 L3 OVERLOAD SIZE GAS LINE SUCTION LOW FIRE HIGH FIRE DIFF GOVERNOR INLET PRESS GOVERNOR OUTLET PRESS PILOT PRESSURE AIR...

Page 15: ...TS BELT CENTRES ALIGNMENT TENSION PROFILE OPENING VELOCITY BURNER SIZE CURRENT L1 L2 L3 OVERLOAD SIZE GAS LINE SUCTION LOW FIRE HIGH FIRE DIFF GOVERNOR INLET PRESS GOVERNOR OUTLET PRESS PILOT PRESSURE...

Page 16: ...Layout of electrical equipment DV heater Layout of electrical equipment DH heater...

Page 17: ...rmer V5 Motorised Ball Valve M1 Modulating Control Valve Motor V6 Burner Isolating Valve P4 Air Pressure Switch V7 Pilot Gas Isolating valve T1 Room Sensor V8 Pilot Governor T2 Duct Sensor V9 V10 Pilo...

Page 18: ...ssure test point P1 and P3 to pressurise the assembly between the two safety shut off valves Connect pressure gauge to pressure test point P4 10 Open V1 any rise in pressure indicates the downstream s...

Page 19: ...10 x 50 LG HEX Head Set Screw 5 M5 x 12 HEX Head Set Screw 6 M10 Nut and Washer 7 Support Bracket Gasket N0010 8 M5 x 40 HEX Head Set Screw 9 M5 nut and Washer 10 Stainless Steel Mixing Plate N0006 11...

Page 20: ...he black section normally takes 1 min 28 seconds for the MMI 810 1 Note References to terminal numbers in this section relate to those in the Satronic burner controller sub base and do not correspond...

Page 21: ...rminal 5 or terminal C If solenoid coils fitted with rectifier the negative side must be connected to terminal 5 or C Flame sensing probe earthing Reposition or replace flame sensing probe Lockout dur...

Page 22: ...me failure due to loss of gas supply Investigate the cause of gas supply failure Flame failure due to an unstable flame Check the flame signal during the switching from high to low to hire fire Adjust...

Page 23: ...d Hazel Grove STOCKPORT Cheshire SK7 4LD Tel 0161 482 7900 Fax 0161 482 7901 Description Part No Spark Probe N1014 Flame Probe IEG 18 6 N1007 Satronic MMI810 N1018 4 Pole Miniature Relays N1244 N1260...

Page 24: ...programming and this should be carried out by a Nordair Niche Engineer Modulating gas valve control unit Isolate electric supply unbolt motor clamp from valve spindle and remove motor from motor mount...

Page 25: ......

Page 26: ...n Nortek Global HVAC reserves the right to change product speci cation without due notice NORTEK GLOBAL HVAC UK LTD Fens Pool Avenue Brierley Hill West Midlands DY5 1QA United Kingdom Tel 01384 489 25...

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