Newmac NS220 - Recommended Bi-Metal and Damper Setting; Caring for Enameled Parts; Loading Door Adjustment; Replacement of Firebox Liners

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RECOMMENDED BI-METAL AND DAMPER SETTING
The thermostat control (bi-metal) was adjusted at the factory at room temperature. Do not tamper with the control or the
damper lift mechanism as this may cause the room heater to overheat.
Bi-metal control
Chain
Draft Adjuster
Combustion
Air damper
Bi-metal control
Chain
Firebox
Combustion
Air damper
Door
Thermostatic
Thermostatic
NC100, NCM120, Classic and Classic II NS220 (Newmac Status)
CARING FOR ENAMELED PARTS
NC100 (Newmac Classic) and NCM120 (Newmac Classic II, Mobile)
This heater has enameled outside jacket. Enamel baked onto the steel or iron is very serviceable, but it will not stand
rough handling or abuse. When setting up your heater use care in handling. Clean with soap and warm water when
heater is not hot. DO NOT use any acids or scouring soap, as these wear and dull the finish.
LOADING DOOR ADJUSTMENT
Should it be necessary to adjust or tighten the loading door ( NS220 - Key 20: NC100 - Key 32: NCM120 - Key 36)
remove bolts in door latch bracket (NS220 – Key 28: NC100 - Key 39: NCM120 - Key 43) place washers inside
(between bracket and front) this will adjust latch bracket closer to front and tighten door seal.
REPLACEMENT OF FIREBOX LINERS – NS220 (Newmac Status)
All firebox liners with the exception of the front liners and economizer (Key 11, 23 and 24) are secured without the use of
screw or bolts. To achieve this they have to be placed any or all liners this sequence must be followed otherwise they
cannot be removed.
Removal Procedure:
1. Remove flue baffle (Key 14) by lifting it up and sliding it forward through the door opening.
2. Lift up and slide top back heat liner (Key 15) forward and through door opening.
3. Slide upper side liner - left or right – (Key 27) toward back of firebox and remove through door opening
4. Remove refractory bricks on each side (5 per side).
5. Take out bottom back heat liner (Key 16).
6. Lift up and remove lower right side brick liner (Key 26).
7. Remove bottom bricks
8. Lift up and remove lower left side brick liner
9. Slide angled side bricks (2 per side) from side brick liner.
NOTE: To remove economizer and/or front liners unscrew fastening bolts and lift out.
To replace the firebox liners follow the removal procedure in reverse, i.e. start with Step 9 to slide side bricks into liner
etc.