operating water temperature exceeds the reduced
setting. If module burners do not shut off, check high
limit electrical wiring. If O.K., replace high limit.
c. Check that low water cutoff(s) actually shut down
heating plant as intended.
16. Before leaving the job, make sure heating plant
installation has been inspected and approved by local
authorities having jurisdiction over the installation.
STEP 3: HOW TO CHANGE ORIFICES (IF NECESSARY)
STEP 2: START-UP & ADJUSTMENTS (CONTINUED)
21
MANIFOLD
PRESSURE
NAT. GAS
1000 BTU/CU FT.
0.60 SG
L.P. GAS
2500 BTU CU. FT.
1.5 SG
TYPE OF GAS
3.5
10.0
R-180
MOD.
37
52
R-210
MOD.
33
51
R-250
MOD.
33
51
R-300
MOD.
31
49
FIGURE 8.3 ORIFICE DRILL SIZE
1. Shut off power supply and gas supply to module.
2. Remove burner access panel. To remove burners,
lift up and to the rear until burners are disengaged from
the orifices.
3. Check orifices for proper drill size which is stamped
onto the body of the brass orifice. Size can also be
checked by using a pin gauge (see Figure 8.3).
4. All orifices are screwed into the manifold and may
be removed by using a 5/8” wrench or socket.
5. Reverse above procedures to install orifices and
burners. BE SURE TO REINSTALL BURNER WITH
BURNER PORTS ON TOP SURFACE (UPRIGHT).
Содержание MultiTemp MR Series
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